WorldWideScience

Sample records for proposed western gulf

  1. Gulf of Mexico Sales 142 and 143: Central and western planning areas

    International Nuclear Information System (INIS)

    1992-11-01

    This environmental impact statement (EIS) addresses two proposed Federal actions, lease Sales 142 and 143, that will offer for lease Gulf of Mexico Outer Continental Shelf (OCS) areas that may contain economically recoverable oil and gas resources. The lease sales are proposed for 1993 and include lease blocks in the Central Gulf of Mexico Planning Area (CPA) and Western Gulf of Mexico Planning Area (WPA). Up to 10,099 blocks will be available for lease under the two proposed actions; only a small percentage is expected to be actually leased. On average, 401 blocks in the Central Gulf and 264 blocks in the Western Gulf have been leased in individual Gulf of Mexico OCS lease sales since 1984. Of the blocks that will be leased as a result of the two proposed actions, only a portion will be drilled and result in subsequent production. The scoping process was used to obtain information and comments on the proposed actions and the potential environmental effects from diverse interests, including the affected States, Federal agencies, the petroleum industry, environmental and public interest groups, and concerned individuals. This volume, Volume 2, reports on impacts from Sales 142 and 143

  2. Gulf of Mexico Sales 142 and 143: Central and western planning areas

    International Nuclear Information System (INIS)

    1992-11-01

    This environmental impact statement (EIS) addresses two proposed Federal actions, lease Sales 142 and 143, that will offer for lease Gulf of Mexico Outer Continental Shelf (OCS) areas that may contain economically recoverable oil and gas resources. The lease sales are proposed for 1993 and include lease blocks in the Central Gulf of Mexico Planning Area (CPA) and Western Gulf of Mexico Planning Area (WPA). Up to 10,099 blocks will be available for lease under the two proposed actions; only a small percentage is expected to be actually leased. On average, 401 blocks in the Central Gulf and 264 blocks in the Western Gulf have been leased in individual Gulf of Mexico OCS lease sales since 1984. Of the blocks that will be leased as a result of the two proposed actions, only a portion will be drilled and result in subsequent production. The scoping process was used to obtain information and comments on the proposed actions and the potential environmental effects from diverse interests, including the affected States, Federal agencies, the petroleum industry, environmental and public interest groups, and concerned individuals. The input from these sources aided in the identification of significant issues, possible alternatives to the proposed actions, and potential mitigating measures

  3. Western Gulf of Mexico lease sale draws weak response

    International Nuclear Information System (INIS)

    Koen, A.D.

    1992-01-01

    This paper reports that puny participation in the federal lease sale for the western Gulf of Mexico reflected a lack of open acreage on attractive prospects and the crisis sweeping the U.S. offshore oil and gas industry. Thirty-eight companies participating in the Minerals Management Service's Outer Continental Shelf Sale 141 offered 81 bids for 61 tracts in the western gulf planning area. That was the fewest bids offered in a western gulf sale since operators offered 52 bids for 41 tracts at Sale 105 in August 1986. The only Gulf of Mexico minerals sale to attract less bonus money was the MMS sulfur and salt sale in the central gulf in February 1988 in which $20.8 million was exposed

  4. Gulf of Mexico OCS oil and gas lease sales 171, 174, 177, and 180 - Western Planning Area. Final environmental impact statement

    International Nuclear Information System (INIS)

    1998-05-01

    The Minerals Management Service proposes to hold annual oil and gas lease sales in the Western Planning Area (WPA) of the Gulf of Mexico Outer Continental Shelf (OCS). The proposed actions are the Western Gulf sales scheduled in the Outer Continental Shelf Oil and Gas Leasing Program: 1997-2002 (Sale 171 in 1998, Sale 174 in 1999, Sale 177 in 2000, and Sale 180 in 2001). This environmental impact statement (EIS) serves as a decision document for proposed Sale 171. This document includes the purpose and background of the proposed actions, identification of the alternatives, description of the affected environment, and an analysis of the potential environmental impacts of the proposed actions, alternatives, and associated activities, including proposed mitigating measures and their potential effects. Potential contributions to cumulative impacts resulting from activities associated with the proposed actions are also analyzed. Each of the proposed actions will offer for lease all unleased blocks in the Western Planning Area of the Gulf of Mexico OCS, with the exclusion of the East and West Flower Garden Banks (Blocks A-375 and A-398 in the High Island Area, East Addition, South Extension) and three blocks used for Naval mine warfare testing and training (Blocks 793, 799, and 816 in the Mustang Island Area). Additionally, discussions between the United States and Mexico regarding tracts beyond the U.S. Exclusive Economic Zone are ongoing and may result in the deferral of those tracts for Sale 171 (approximately 277 tracts) in the open-quotes Northern Portion of the Western Gapclose quotes (Figure 1-1). Additional copies of this EIS and the referenced visuals may be obtained from the MMS, Gulf of Mexico OCS Region, Public Information Office (MS 5034), 1201 Elmwood Park Boulevard, New Orleans, Louisiana 70123-2394, or by telephone at I-800-200-GULF

  5. Gulf of Mexico sales 147 and 150: Central and western planning areas. Draft environmental impact statement. Volume 2. Sections IV.D through IX. Draft report

    International Nuclear Information System (INIS)

    1993-04-01

    Contents: environmental impacts of the proposed actions and alternatives; proposed central gulf sale 147; proposed western gulf sale 150; analysis of a large oil spill; consultation and coordination; bibliography and special references; glossary; appendices

  6. Gulf of Mexico Sales 147 and 150: Central and Western planning areas. Final environmental impact statement, Volume 1: Sections 1 through 4.C

    Energy Technology Data Exchange (ETDEWEB)

    1993-11-01

    This Final Environmental Impact Statement (EIS) covers the proposed 1994 Gulf of Mexico OCS oil and gas lease sales [Central Gulf of Mexico Sale 147 (March 1994) and Western Gulf of Mexico Sale 150 (August 1994)]. This document includes the purpose and background of the proposed actions, the alternatives, the descriptions of the affected environment, and the potential environmental impacts of the proposed actions and alternatives. Proposed mitigating measures and their effects are analyzed, in addition to potential cumulative impacts resulting from proposed activities.

  7. Gulf of Mexico Sales 157 and 161: Central and western planning areas final environmental impact statement, Volume I: Sections I through IV.C

    International Nuclear Information System (INIS)

    1995-11-01

    This Final Environmental Impact Statement (EIS) covers the proposed 1996 Gulf of Mexico OCS oil and gas lease sales [Central Gulf of Mexico Sale 157 (March 1996) and Western Gulf of Mexico Sale 161 (August 1996)]. This document includes the purpose and background of the proposed actions, the alternatives, the descriptions of the affected environment, and the potential environmental impacts of the proposed actions and alternatives. Proposed mitigating measures and their potential effects are analyzed, in addition to potential cumulative impacts resulting from proposed activities

  8. 75 FR 17156 - Gulf of Mexico, Outer Continental Shelf, Western Planning Area, Oil and Gas Lease Sale 215 (2010...

    Science.gov (United States)

    2010-04-05

    ... environmental assessment (EA) for proposed Gulf of Mexico Outer Continental Shelf (OCS) oil and gas Lease Sale... Environmental Impact Statement; Volumes I and II (Multisale EIS, OCS EIS/EA MMS 2007-018) and in the Gulf of...; Western Planning Area Sales 210, 215, and 218--Final Supplemental Environmental Impact Statement...

  9. Gulf of Mexico sales 147 and 150: Central and western planning areas. Draft environmental impact statement. Volume 1. Sections I through IV.C. Draft report

    International Nuclear Information System (INIS)

    1993-04-01

    The Draft Environmental Impact Statement (EIS) covers the proposed 1994 Gulf of Mexico OCS oil and gas lease sales (Central Gulf of Mexico Sale 147 (March 1994) and Western Gulf of Mexico Sale 150 (August 1994)). The document includes the purpose and background of the proposed actions, the alternatives, the description of the affected environment, and the potential environmental impacts of the proposed actions and alternatives. Proposed mitigating measures and their effects are analyzed, in addition to potential cumulative impacts resulting from proposed activities

  10. Western gulf culture-density study-early results

    Science.gov (United States)

    Mohd S. Rahman; Michael G. Messina; Richard F. Fisher; Alan B. Wilson; Nick Chappell; Conner Fristoe; Larry Anderson

    2006-01-01

    The Western Gulf Culture-Density Study is a collaborative research effort between Texas A&M University and five forest products companies to examine the effects of early silvicultural treatment intensity and a wide range of both densities and soil types on performance of loblolly pine. The study tests 2 silvicultural intensities, 5 planting densities (200 to 1,200...

  11. Strontium-90 in the western Gulf of Mexico

    International Nuclear Information System (INIS)

    Payton, P.H.; Hild, S.B.; Oertti, C.U.; Suttle, A.D. Jr.

    1977-01-01

    The results of measurements of 90 Sr in water, coral, hermit crabs and molluscs from the western Gulf of Mexico and in fresh water molluscs from Canyon Lake, Texas are reported. Preparation of samples for measurement in the anticoincidence mode in a lead shielded flow proportional counter is described. The measured value of 0.095 +- 0.003 pCi/litre for Gulf water is in accord with literature values. Concentration factors for 90 Sr are apparently 1 for coral. The activity incorporated into shells normalized to calcium content, decreases from Galveston to Campeche Bay. (U.K.)

  12. Radium variability produced by shelf-water transport and mixing in the western Gulf of Mexico

    International Nuclear Information System (INIS)

    Reid, D.F.

    1984-01-01

    226 Ra and 228 Ra exhibit significant temporal and spatial variability in the near-surface western Gulf of Mexico. Concentrations of both isotopes during March 1976 were approx. 22 to 26% greater than those observed during February 1973. It is shown that analytical differences cannot account for this increase. Consideration of radium levels in the western Caribbean Sea indicates that there must be an internal source of radium that has a significant but temporally variable influence on near-surface radium concentrations in the western Gulf. Comparisons of radium, salinity, and temperature data from 1973 and 1976 provide evidence that advective transport and mixing of radium-rich shelf water with the interior water column of the western basin is responsible for the variability. By plotting 228 Ra vs 226 Ra from this region, estimates of the apparent shelf-water component in the upper water column can be made. The results indicate 36% over the northern slope, 10 to 18% in the central western Gulf, and 3 to 7% over Campeche Bank. In addition to explaining observed short-term variations of radium in this region, this information should be useful for environmental impact assessments concerned with industrial discharges on the northern shelf. (author)

  13. Coral reef connectivity within the Western Gulf of Mexico

    Science.gov (United States)

    Salas-Monreal, David; Marin-Hernandez, Mark; Salas-Perez, Jose de Jesus; Salas-de-Leon, David Alberto; Monreal-Gomez, Maria Adela; Perez-España, Horacio

    2018-03-01

    The yearlong monthly mean satellite data of the geostrophic velocities, the sea surface temperature and the chlorophyll-a values were used to elucidate any possible pathway among the different coral reef systems of the Western Gulf of Mexico (WGM). The geostrophic current velocities suggested different pathways connecting the coral reef areas. The typical coastal alongshore pathway constricted to the continental shelf, and two open ocean pathway, the first connecting the Campeche Reef System (CRS) with the Veracruz (VRS) and Tuxpan-Lobos Reef Systems (TLRS), and the second pathway connecting the Tuxpan-Lobos Reef System with the Flower Garden Reef System (FGRS). According to the pathways there should be more larvae transport from the southern Gulf of Mexico reef systems toward the FGRS than the other way. The connection from the southern Gulf of Mexico toward the FGRS took place during January, May, July, August and September (2015), while the connection from the FGRS toward the southern Gulf of Mexico reef system took place during January and February (2015), this was also suggested via model outputs. The density radio (R) was used as a first approximation to elucidate the influence of the freshwater continental discharges within the continental shelf. All coral reef areas were located where the Chlorophyll-a monthly mean values had values bellow 1 mg m- 2 with a density radio between 0 and 1, i.e. under the influence of continental discharges.

  14. ECONOMICS AND APPRAISAL OF CONVENTIONAL OIL AND GAS IN THE WESTERN GULF OF MEXICO.

    Science.gov (United States)

    Attanasi, E.D.; Haynes, John L.

    1984-01-01

    The oil and gas industry frequently appraises undiscovered oil and gas resources on a regional basis to decide whether to start or continue exploration programs. The appraisals are of little value unless conditioned by estimates of the costs of finding and producing the resources. This paper presents an economic appraisal of undiscovered oil and gas resources in the western Gulf of Mexico. Also presented are a description of the model used to make the assessment, results of a sensitivity analysis, and a discussion of the implications of the results to the industry. The appraisal is shown to be relatively robust to changes in physical and engineering assumptions. Because the number of commercial discoveries was found to be quite sensitive to economic conditions, the analysis has important implications in terms of forecasting future industry drilling and other associated activities in the western Gulf of Mexico.

  15. Herbicide site preparation and release options for eucalyptus plantation establishment in the western gulf

    Science.gov (United States)

    Michael A. Blazier; John Johnson; Eric L. Taylor; Brad Osbon

    2012-01-01

    Cold-tolerant species of eucalyptus (Eucalyptus spp.) are increasingly grown in the Western Gulf region as short-rotation pulpwood feedstock. Operational chemical suppression of competing vegetation has been relatively costly and inefficient because it requires frequent applications of glyphosate applied via backpack sprayers. A series of studies...

  16. 77 FR 28569 - Foreign-Trade Zone 92-Gulfport, MS Notification of Proposed Production Activity; Gulf Ship, LLC...

    Science.gov (United States)

    2012-05-15

    ... DEPARTMENT OF COMMERCE Foreign-Trade Zones Board [B-36-2012] Foreign-Trade Zone 92--Gulfport, MS Notification of Proposed Production Activity; Gulf Ship, LLC, (Shipbuilding), Gulfport, MS The Mississippi Coast Foreign-Trade Zone, Inc., grantee of FTZ 92, submitted a notification of proposed production activity on behalf of Gulf Ship, LLC (Gulf...

  17. AFSC/ABL: Deep-Water Longline Survey for Giant Grenadier and Sablefish in the Western Gulf of Alaska

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — An experimental bottom longline survey was conducted at depths >1,000 m in the western Gulf of Alaska in August 2008. The objective was to investigate the...

  18. 77 FR 40081 - Gulf of Mexico, Outer Continental Shelf (OCS), Western Planning Area (WPA) and Central Planning...

    Science.gov (United States)

    2012-07-06

    ... DEPARTMENT OF THE INTERIOR Bureau of Ocean Energy Management Gulf of Mexico, Outer Continental Shelf (OCS), Western Planning Area (WPA) and Central Planning Area (CPA), Oil and Gas Lease Sales for 2012-2017 AGENCY: Bureau of Ocean Energy Management (BOEM), Interior. ACTION: Notice of availability...

  19. 76 FR 38673 - Environmental Documents Prepared for Proposed Oil, Gas, and Mineral Operations by the Gulf of...

    Science.gov (United States)

    2011-07-01

    ... the Survey, SEA M10-008. Gulf of Mexico. Coastal Technology Corporation, Located on the Atlantic 2/1.... Planning Areas of the Gulf of Mexico. Energy Resource Technology GOM, Matagorda Island, Block 2/3/2011 Inc... Environmental Documents Prepared for Proposed Oil, Gas, and Mineral Operations by the Gulf of Mexico Outer...

  20. Gravitational collapse and Neogene sediment transfer across the western margin of the Gulf of Mexico: Insights from numerical models

    NARCIS (Netherlands)

    Alzaga-Ruiz, H.; Granjeon, D.; Lopez, M.; Séranne, M.; Roure, F.

    2009-01-01

    The western margin of the Gulf of Mexico (Veracruz State, Mexico) displays an extensive Neogene gravitational system, whereby the Neogene siliciclastic sediments are detached from underlying Mesozoic carbonates along decollement surface in Oligocene underpressured clays. Rapidly subsiding

  1. Isotopic characterization and genetic origin of crude oils from Gulf of Suez and western desert fields in Egypt

    International Nuclear Information System (INIS)

    Abd El Samie, S.G.

    2006-01-01

    Stable carbon isotopes were used to asses the general characteristics of the western desert and Gulf of Suez crude oils in accordance with hydrocarbon generation, source rocks, thermal gradient and maturation level. The carbon isotopic results of all the analyzed oil samples in both areas lie in the range from -29.62 to -24.11 %. The av. σ 13 C values in the Gulf of Suez reaches about -28.6% and -26.4% in western desert. It was accounted a marginal difference between the two areas by about 2.5 : 3% in carbon-13 isotope of the whole oil indicated two distinct oil types of different organic input and varies in the depositional environment. It was found that Gulf of Suez oils are dominated by marine organic matter (plankton algae) deposited in saline environment. The derived oils from the northern and central provinces of the Gulf are isotopically light, higher in sulfur content, lower in API gravity degree and have Pristane/Phytane (Pr/Ph) ratio less than or equal one (Pr/Ph = 1). In the southern province, about 0.5% isotopic enrichment was recorded in the produced oils from shallower depths, associated with gradual increment in API and maturity level as thermal gradient increase. However, low API gravity degree and less maturity of the Gulf of Suez oils could be related to the rifting temperature that forced and accelerated the expulsion rate and hydrocarbon generation prior reaching higher maturation levels. On the other hand, the produced oils from the western desert fields belong mostly to terrestrial organic debris (with minor marine fragment in some basins) deposited at deeper geological formations. It is characterized by isotopic enrichment, paraffinic waxy oils, low in sulphur content, have Pr/Ph = 1, high in API gravity and maturity level. Hydrocarbon generated from the western desert fields has been controlled by time-temperature effect in the source rocks and reservoirs where the humic organic matter are affected by high temperature over longer period of

  2. Near-coastal ocean variability off southern Tamaulipas - northern Veracruz, western Gulf of Mexico, during spring-summer 2013

    Science.gov (United States)

    Rivas, David

    2016-04-01

    Six months of observations from a near-coastal mooring deployed off southern Tamaulipas-northern Veracruz coast (western Gulf of Mexico) during spring-summer 2013 provides velocity, temperature, salinity, sea level, and dissolved oxygen series in a region which ocean dynamics is still poorly understood. As shown in a preceding analysis of this region's winter circulation for winter 2012-2013, coastal trapped motions associated with the regional invasion of synoptic cold fronts modulate the local variability; this pattern remains in the spring 2013, when even more intense events of alongshore flow (>50 cm/s) are observed. This intensified flow is associated with a significant decrease in the dissolved oxygen, most probably related to an influence of hypoxic waters coming from the northern Gulf. In late spring-mid summer, the wind pattern corresponds to persistent southeasterly winds that favor the occurrence of a local upwelling, which maintains a local thermal reduction (>3 degrees Celsius) and is associated with a persistent northward flow (>30 cm/s). The late summer was characterized by a significant tropical-cyclone activity, when a depression, a storm, and a hurricane affected the western Gulf. These tropical systems caused an intense precipitation and hence an important intensification of the local riverine discharge, and the winds enhanced the mixing of such riverine waters, via mostly kinetic stirring and Ekman pumping.

  3. Seismic Structural Setting of Western Farallon Basin, Southern Gulf of California, Mexico.

    Science.gov (United States)

    Pinero-Lajas, D.; Gonzalez-Fernandez, A.; Lopez-Martinez, M.; Lonsdale, P.

    2007-05-01

    Data from a number of high resolution 2D multichannel seismic (MCS) lines were used to investigate the structure and stratigraphy of the western Farallon basin in the southern Gulf of California. A Generator-Injector air gun provided a clean seismic source shooting each 12 s at a velocity of 6 kts. Each signal was recorded during 6- 8 s, at a sampling interval of 1 ms, by a 600 m long digital streamer with 48 channels and a spacing of 12.5 m. The MCS system was installed aboard CICESE's (Centro de Investigacion Cientifica y de Educacion Superior de Ensenada) 28 m research vessel Francisco de Ulloa. MCS data were conventionally processed, to obtain post- stack time-migrated seismic sections. The MCS seismic sections show a very detailed image of the sub-bottom structure up to 2-3 s two-way travel time (aprox. 2 km). We present detailed images of faulting based on the high resolution and quality of these data. Our results show distributed faulting with many active and inactive faults. Our study also constrains the depth to basement near the southern Baja California eastern coast. The acoustic basement appears as a continuous feature in the western part of the study area and can be correlated with some granite outcrops located in the southern Gulf of California islands. To the East, near the center of the Farallon basin, the acoustic basement changes, it is more discontinuous, and the seismic sections show a number of diffracted waves.

  4. 78 FR 66945 - Proposed Collection; 60-Day Comment request: Gulf Long-Term Follow-Up Study (GuLF STUDY)

    Science.gov (United States)

    2013-11-07

    ... GuLF STUDY is to investigate potential short- and long-term health effects associated with oil spill... non-Cleanup Workers Supplemental Mental Health 4,600 4 15/60 4,600 1,533 Telephone Questionnaire... DEPARTMENT OF HEALTH AND HUMAN SERVICES National Institutes of Health Proposed Collection; 60-Day...

  5. AFSC/NMML: Killer whale surveys in the Aleutian Islands, Bering Sea, and western and central Gulf of Alaska, 2001 - 2010

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This dataset is a compilation of line-transect data collected on surveys in the Aleutian Islands, Bering Sea, and western and central Gulf of Alaska, 2001 - 2010....

  6. Yield and financial performance estimates of four elite loblolly pine seed sources planted in the Western Gulf Region

    Science.gov (United States)

    Michael A. Blazier; A. Gordon Holley

    2015-01-01

    Eastern seed sources of loblolly pine (Pinus taeda L.) have been planted in the Western Gulf region for nearly three decades because they often have higher growth rates than local seed sources. However, productivity gains for eastern families are sometimes offset by poorer survival rates relative to local families.

  7. Clinical Evaluation of a Proposed New Gulf War Syndrome

    National Research Council Canada - National Science Library

    Levine, Paul

    2001-01-01

    Thus far, studies on Gulf War veterans have not defined any syndrome specific to deployed Gulf War veterans, but have only suggested that Persian Gulf War veterans have a higher frequency of a number...

  8. Modelling for anchovy recruitment studies in the Gulf of Lions (Western Mediterranean Sea)

    Science.gov (United States)

    Nicolle, Amandine; Garreau, Pierre; Liorzou, Bernard

    2009-12-01

    Anchovy ( Engraulis encrasicolus) is an important commercial species and one of the most abundant pelagic fish in the Gulf of Lions and the Catalan Sea. The factors influencing its recruitment are crucial to fisheries and ecological research. Among those factors transport of larvae by hydrodynamics (currents) is important because it determines whether the organisms can reach areas favourable to recruitment or are dispersed. Therefore, the first step in anchovy recruitment modelling is to simulate North-western Mediterranean Sea circulation. Several years (2001-2008) of hydrodynamics were simulated with the MARS-3D code. The resulting simulated currents and salinity are used by Lagrangian tool, Ichthyop, to transport anchovy eggs and larvae to the Western Mediterranean Sea. The aim of this study is to understand the main hydrodynamic processes that control anchovy transport and the effects of diel vertical migration on the transport and final distribution of anchovy.

  9. Characteristics and frequency of large submarine landslides at the western tip of the Gulf of Corinth

    Science.gov (United States)

    Beckers, Arnaud; Hubert-Ferrari, Aurelia; Beck, Christian; Papatheodorou, George; de Batist, Marc; Sakellariou, Dimitris; Tripsanas, Efthymios; Demoulin, Alain

    2018-05-01

    Coastal and submarine landslides are frequent at the western tip of the Gulf of Corinth, where small to medium failure events (106-107 m3) occur on average every 30-50 years. These landslides trigger tsunamis and consequently represent a significant hazard. We use here a dense grid of high-resolution seismic profiles to realize an inventory of the large mass transport deposits (MTDs) that result from these submarine landslides. Six large mass wasting events are identified, and their associated deposits locally represent 30 % of the sedimentation since 130 ka in the main western basin. In the case of a large MTD of ˜ 1 km3 volume, the simultaneous occurrence of different slope failures is inferred and suggests an earthquake triggering. However, the overall temporal distribution of MTDs would result from the time-dependent evolution of pre-conditioning factors rather than from the recurrence of external triggers. Two likely main pre-conditioning factors are (1) the reloading time of slopes, which varied with the sedimentation rate, and (2) dramatic changes in water depth and water circulation that occurred 10-12 ka ago during the last post-glacial transgression. Such sliding events likely generated large tsunami waves in the whole Gulf of Corinth, possibly larger than those reported in historical sources considering the observed volume of the MTDs.

  10. 75 FR 54445 - Proposed Information Collection (Follow-Up Study of a National Cohort of Gulf War and Gulf Era...

    Science.gov (United States)

    2010-09-07

    ... Collection (Follow-Up Study of a National Cohort of Gulf War and Gulf Era Veterans) Activity: Comment Request... assist in VA's efforts to address the health concerns and problems of Gulf War Veterans. DATES: Written... of Gulf War and Gulf Era Veterans, VA Form 10-0488, and Consent Form for Release of Medical Records...

  11. Paleoceanographic history of the Guaymas Basin, Gulf of California, during the past 15,000 years based on diatoms, silicoflagellates, and biogenic sediments

    Science.gov (United States)

    Barron, J.A.; Bukry, D.; Dean, W.E.

    2005-01-01

    High-resolution records of calcium carbonate, biogenic opal, diatoms, and silicoflagellates from western Guaymas Basin gravity core GGC55 and piston core JPC56 and eastern Guaymas Basin DSDP Site 480 reveal a complex paleoceanographic history of the central Gulf of California during the past 15,000 years. Prior to ??? 6.2 ka, the eastern and western Guaymas Basin proxy records were remarkably similar. After conditions similar to those of today during the B??lling-Allerod, the Younger Dryas (YD) saw a major drop in diatom production, coincident with increased calcium carbonate and tropical microfossils suggestive of El Nin??o-like conditions. Biosiliceous productivity began increasing during the latter part of the YD, but it was only during the earliest Holocene (11.6 to 11.0 ka) that conditions similar to those of the B??lling-Allerod returned to the central Gulf. Between around 11.0 and 6.2 ka, tropical diatoms and silicoflagellates were virtually absent from the central Gulf, as relatively cooler and fresher surface waters resembling those of the modern northern Gulf were present in the central Gulf. Beginning at about 6.2 ka, tropical diatoms and silicoflagellates began increasing in the central Gulf, and coccoliths returned to western Gulf sediments. The onset of modern-day monsoon conditions in the American Southwest required the presence of warm SSTs in the northern Gulf, which probably did not occur until after about 5.4 ka, when tropical diatoms and silicoflagellates became relatively common in the central Gulf. Modern east-west contrasts, which arise from late winter-early spring coastal upwelling on the mainland side and lower diatom productivity on the western side of the Gulf, commenced between 6.2 and 5.4 ka, possibly due to a shift in the direction of late winter-early spring winds more towards the southeast, or down the axis of the Gulf. This proposed wind shift might have ultimately been due to a late Holocene strengthening of ENSO-like conditions

  12. 77 FR 50388 - Coastal Migratory Pelagic Resources of the Gulf of Mexico and South Atlantic; 2012-2013...

    Science.gov (United States)

    2012-08-21

    ... Brownsville, Texas) and continues to the boundary between the eastern and western zones at 87[deg]31.1[min] W... Atlantic; 2012-2013 Accountability Measure and Closure for Gulf King Mackerel in Western Zone AGENCY... king mackerel in the western zone of the Gulf of Mexico (Gulf) exclusive economic zone (EEZ) through...

  13. 78 FR 58248 - Coastal Migratory Pelagic Resources of the Gulf of Mexico and South Atlantic; 2013-2014...

    Science.gov (United States)

    2013-09-23

    ... between the eastern and western zones at 87[deg]31.1' W. long., which is a line directly south from the... Atlantic; 2013-2014 Accountability Measure and Closure for Gulf King Mackerel in Western Zone AGENCY... king mackerel in the western zone of the Gulf of Mexico (Gulf) exclusive economic zone (EEZ) through...

  14. The Gulf Security Dialogue and Related Arms Sale Proposals

    National Research Council Canada - National Science Library

    Blanchard, Christopher M; Grimmett, Richard F

    2008-01-01

    ...) security cooperation under the auspices of a new Gulf Security Dialogue (GSD). The Dialogue now serves as the principal security coordination mechanism between the United States and the six countries of the Gulf Cooperation Council (GCC...

  15. Oil-spill risk analysis: Central and western Gulf of Mexico Outer Continental Shelf, Lease Sales 139 and 141. Final report

    International Nuclear Information System (INIS)

    Johnson, W.R.; Lear, E.M.

    1992-02-01

    The Federal Government has proposed to offer Outer Continental Shelf lands in the Gulf of Mexico for oil and gas leasing. Because oil spills may occur from activities associated with offshore oil production, the Minerals Management Service conducts a formal risk assessment. The effects of oil spills that could occur during oil and gas production must be considered. The report summarizes results of an oil spill risk analysis conducted for the proposed Gulf of Mexico Outer Continental Shelf Lease Sales 139 and 141

  16. 78 FR 64888 - Coastal Migratory Pelagic Resources of the Gulf of Mexico and South Atlantic; Reopening of the...

    Science.gov (United States)

    2013-10-30

    ... the boundary between the eastern and western zones at 87[deg]31.1' W. long., which is a line directly... Atlantic; Reopening of the Commercial Harvest of Gulf King Mackerel in Western Zone AGENCY: National Marine... western zone of the Gulf of Mexico (Gulf) exclusive economic zone (EEZ). NMFS previously projected that...

  17. Characteristics and frequency of large submarine landslides at the western tip of the Gulf of Corinth

    Directory of Open Access Journals (Sweden)

    A. Beckers

    2018-05-01

    Full Text Available Coastal and submarine landslides are frequent at the western tip of the Gulf of Corinth, where small to medium failure events (106–107 m3 occur on average every 30–50 years. These landslides trigger tsunamis and consequently represent a significant hazard. We use here a dense grid of high-resolution seismic profiles to realize an inventory of the large mass transport deposits (MTDs that result from these submarine landslides. Six large mass wasting events are identified, and their associated deposits locally represent 30 % of the sedimentation since 130 ka in the main western basin. In the case of a large MTD of  ∼  1 km3 volume, the simultaneous occurrence of different slope failures is inferred and suggests an earthquake triggering. However, the overall temporal distribution of MTDs would result from the time-dependent evolution of pre-conditioning factors rather than from the recurrence of external triggers. Two likely main pre-conditioning factors are (1 the reloading time of slopes, which varied with the sedimentation rate, and (2 dramatic changes in water depth and water circulation that occurred 10–12 ka ago during the last post-glacial transgression. Such sliding events likely generated large tsunami waves in the whole Gulf of Corinth, possibly larger than those reported in historical sources considering the observed volume of the MTDs.

  18. 75 FR 54965 - Proposed Information Collection (Follow-Up Study of a National Cohort of Gulf War and Gulf Era...

    Science.gov (United States)

    2010-09-09

    ... Collection (Follow-Up Study of a National Cohort of Gulf War and Gulf Era Veterans) Activity: Comment Request... needed to assist in VA's efforts to address the health concerns and problems of Gulf War Veterans. DATES... use of other forms of information technology. Titles: Follow-Up Study of a National Cohort of Gulf War...

  19. A recent perspective of the Circulation in the Gulf of Mexico

    Science.gov (United States)

    Candela, J.; Ochoa-de-La-Torre, J. L.; Sheinbaum, J.; Perez-Brunius, P.; Pallas-Sanz, E.; Kolodziejczyk, N.

    2013-05-01

    The flow through the Gulf of Mexico is an integral part of the North Atlantic Ocean Subtropical Gyre Circulation, known to be forced by the wind over the North Atlantic and by an equivalent contribution from the inter-hemispheric Meridional Overturning Cell. To the North Atlantic Circulation, the Gulf represents an important energy and vorticity sink through the particular behavior of the Loop Current within. Comprehending the structure and dynamics of the Loop Current System (which includes the Yucatan Current (YC), Loop Current (LC), the shedding of anticyclonic Loop Current Eddies (LCE) and peripheral cyclonic gyres) is fundamental for understanding the circulation in the entire Gulf. Within the Gulf, the eastern Loop Current and the western Campeche Bay (CB) regions are characterized by persistent eddy structures, with less structured eddy fields in between. Of these later ones, the northwestern Gulf is a geostrophic turbulence area, constantly perturbed by LCE, which represents, at the same time, an important dissipation and circulation forcing region for the Western Gulf. Important processes recently investigated that will be discussed: 1) The generation and maintenance of the Geostrophic Turbulence field in the north western Gulf. 2) The circulation in deep water induced by the surface geostrophic turbulence field. 3) The generation of intensive jets at depth by interaction of +/- gyres. 4) The generation of coastal trap waves by the interaction of LCEs with the western shelf. 5) The generation of deep topographic Roosby waves by topographic interactions of the LCEs with topography. 5) The characteristics of the Bay of Campeche Circulation, The Campeche Gyre and its interaction with LCEs. 6) The Gulf's response to the passage of hurricanes. 7) The trapping of inertial waves by the LCEs and the related enhanced mixing.

  20. 75 FR 67996 - Environmental Documents Prepared for Proposed Oil, Gas, and Mineral Operations by the Gulf of...

    Science.gov (United States)

    2010-11-04

    ... Environmental Documents Prepared for Proposed Oil, Gas, and Mineral Operations by the Gulf of Mexico Outer... regarding whether those effects have significant impacts. Environmental Assessments are used to evaluate.... ACTION: Notice of the Availability of Environmental Documents Prepared for OCS Mineral Proposals by the...

  1. Oil-spill risk analysis: Gulf of Mexico (Proposed Lease Sales 131/135/137) Outer Continental Shelf. Final report

    International Nuclear Information System (INIS)

    Hannon, L.J.; LaBelle, R.P.; Lear, E.M.

    1991-09-01

    The Federal Government has proposed to offer Outer Continental Shelf lands in the Gulf of Mexico for oil and gas leasing. Because oil spills may occur from activities associated with offshore oil production, the Minerals Management Service conducts a formal risk assessment. In evaluating the significance of accidental oil spills, it is important to remember that the occurrence of such spills is fundamentally probabilistic. The effects of oil spills that could occur during oil and gas production must be considered. The report summarizes results of an oil spill risk analysis conducted for the proposed Gulf of Mexico Outer Continental Shelf Lease Sales 131/135/137. The objective of this analysis was to estimate relative risks associated with oil and gas production for the proposed lease sales

  2. CDOM Optical Properties and Connectivity in the Western Gulf of Alaska, the Unimak Pass and the Southeastern Bering Sea in the Spring During a Cold Year

    Science.gov (United States)

    D'Sa, E. J.; Goes, J. I.; Mouw, C. B.

    2016-02-01

    Flow through the Aleutian Passes connects the North Pacific to the Bering Sea with the Unimak Pass forming an important conduit for the flow of Gulf of Alaska water to the southeastern Bering shelf. While the biophysical properties have been studied for this region, little is known about the dissolved organic matter (DOM) and its optically active chromophoric component (CDOM) which play key roles in ocean color and several biogeochemical and photochemical processes. Dissolved organic carbon (DOC), and CDOM absorption and fluorescence properties were measured at locations in the western Gulf of Alaska, Unimak Pass and the southeastern Bering Sea in spring 2012, a relatively cold year as indicated by hydrographic field and satellite sea surface temperature data. DOC concentrations were on average higher in the western Gulf of Alaska (112.21 ± 20.05 µM) and Unimak Pass (106.14 ± 16.10 µM), than the southeastern Bering Sea shelf (73.28 ± 11.71 µM) suggesting Gulf of Alaska shelf water to be an important source of DOM to the eastern Bering Sea. Overall, CDOM absorption was relatively low while parallel factor (PARAFAC) analysis of DOM fluorescence identified two humic-like (terrestrial and marine) and one protein-like (tryptophan-like) component in the DOM pool. Relationships between the DOM optical properties and the physical regime will be further examined in this study.

  3. Long-Term Trends In Loblolly Pine Productivity And Stand Characteristics In Response To Stand Density And Fertilization In The Western Gulf Region

    Science.gov (United States)

    M.A. Sword; J. L. Chambers; Z. Tang; T. J. Dean; J. C. Goelz

    2002-01-01

    Two levels each of fertilization and stand density were established to create four environments in a 7-year-old loblolly pine plantation on a N and P deficient western Gulf Coastal Plain site in Louisiana. Levels of fertilization were no fertilization and application of 120 lb N and 134 lb P/ac. Levels of stand density were the original stocking (1,210 trees/ac), and...

  4. Young rift kinematics in the Tadjoura rift, western Gulf of Aden, Republic of Djibouti

    Science.gov (United States)

    Daoud, Mohamed A.; Le Gall, Bernard; Maury, René C.; Rolet, JoëL.; Huchon, Philippe; Guillou, Hervé

    2011-02-01

    The Tadjoura rift forms the westernmost edge of the westerly propagating Sheba ridge, between Arabia and Somalia, as it enters into the Afar depression. From structural and remote sensing data sets, the Tadjoura rift is interpreted as an asymmetrical south facing half-graben, about 40 km wide, dominated by a large boundary fault zone to the north. It is partially filled up by the 1-3 Myr old Gulf Basalts which onlapped the older Somali Basalts along its shallower southern flexural margin. The major and trace element analysis of 78 young onshore lavas allows us to distinguish and map four distinct basaltic types, namely the Gulf, Somali, Goumarre, and Hayyabley Basalts. These results, together with radiometric age data, lead us to propose a revised volcano-stratigraphic sketch of the two exposed Tadjoura rift margins and to discriminate and date several distinct fault networks of this oblique rift. Morphological and statistical analyses of onshore extensional fault populations show marked changes in structural styles along-strike, in a direction parallel to the rift axis. These major fault disturbances are assigned to the arrest of axial fault tip propagation against preexisting discontinuities in the NS-oriented Arta transverse zone. According to our model, the sinistral jump of rifting into the Asal-Ghoubbet rift segment results from structural inheritance, in contrast with the en échelon or transform mechanism of propagation that prevailed along the entire length of the Gulf of Aden extensional system.

  5. Seismic evidence for the preservation of several stacked Pleistocene coastal barrier/lagoon systems on the Gulf of Valencia continental shelf (western Mediterranean)

    Science.gov (United States)

    Albarracín, Silvia; Alcántara-Carrió, Javier; Barranco, Andrés; Sánchez García, María José; Fontán Bouzas, Ángela; Rey Salgado, Jorge

    2013-04-01

    The focus of this study is the analysis of coastal sand barriers and associated coastal lagoons on the inner continental shelf of the Gulf of Valencia (western Mediterranean), based on two W-E seismic profiles recorded seaward of the Albufera de Valencia coastal lagoon. Seismic facies identified include a number of coastal sand barriers with landward lagoons draped by contemporary continental shelf deposits. The barrier systems have been grouped into two sedimentary systems tracts, the older one corresponding to a prograding/aggrading highstand systems tract involving at least four paleo-coastal sand barrier/lagoon systems, followed landward by a transgressive systems tract comprising three such systems. All the systems have been allocated a Tyrrhenian age, the formation of individual barrier systems having been associated with successive sea-level stillstands, and their present-day position being explained by the very high regional subsidence rate. In summary, this study demonstrates that the Quaternary stratigraphic record of the Gulf of Valencia inner continental shelf is composed of littoral sand facies, in particular coastal sand barrier and lagoon deposits. These findings are in agreement with corresponding observations on other continental shelves of the western Mediterranean, showing that the formation of coastal sand barriers was a characteristic feature of this region during the Quaternary.

  6. 77 FR 64597 - Proposed Information Collection (Survey of Chronic Gastrointestinal Illness in Persian Gulf...

    Science.gov (United States)

    2012-10-22

    ... of Chronic Gastrointestinal Illness in Persian Gulf Veterans (Irritable Bowel Syndrome--Diarrhea... information needed to evaluate chronic gastrointestinal disorders in Persian Gulf War Veterans. DATES: Written... Gastrointestinal Illness in Persian Gulf Veterans, VA Form 10-21092c. OMB Control Number: 2900-0742. Type of Review...

  7. Coastal circulation and hydrography in the Gulf of Tehuantepec, Mexico, during winter

    Science.gov (United States)

    Barton, E. D.; Lavín, M. F.; Trasviña, A.

    2009-02-01

    Winter observations of shelf and slope hydrography and currents in the inner Gulf of Tehuantepec are analysed from two field studies in 1989 and 1996 to specify the variability of near-shore conditions under varying wind stress. During the winter period frequent outbursts of 'Norte' winds over the central Gulf result in persistent alongshore inflows along both its eastern and western coasts. Wind-induced variability on time scales of several days strongly influences the shelf currents, but has greater effect on its western coast because of the generation and separation of anticyclonic eddies there. The steadier inflow (˜0.2 m s -1) on the eastern shelf is evident in a strong down-bowing of shallow isosurfaces towards the coast within 100 km of shore, below a wedge of warmer, fresher and lighter water. This persistent entry of less saline (33.4-34.0), warmer water from the southeast clearly originates in buoyancy input by rivers along the Central American coast, but is augmented by a general shoreward tendency (0.2 m s -1) in the southeastern Gulf. The resultant shallow tongue of anomalous water is generally swept offshore in the head of the Gulf and mixed away by the strong outflow and vertical overturning of the frequent 'Norte' events but during wind relaxations the warm, low-salinity coastal flow may briefly extend further west. In the head of the Gulf, flow is predominantly offshore (depression, respectively, of the pycnocline against the shore. More saline, open ocean water is introduced from the north-western side of the Gulf by the inflow along the west coast. During extended wind relaxations, the flow becomes predominantly eastward beyond the shelf while nearshore the coastally trapped buoyant inflow from the southeast penetrates across the entire head of the gulf at least as far as its western limit. On the basis of these and other recent observations, it seems that the accepted view of a broad, persistent Costa Rica Coastal Current (CRCC) is the result

  8. Characterization of sea floor in Gulf of Mexico

    Energy Technology Data Exchange (ETDEWEB)

    McGregor, B.A.; Kenyon, N.H.; Schlee, J.S.; Mattick, R.e.; Twichell, D.C.

    1986-05-01

    In 1985, the US Geological Survey (USGS) conducted a mapping program in the Gulf of Mexico. Using the GLORIA (Geologic Long-Range Inclined Asdic) side-scan sonar system of the Institute of Oceanographic Sciences, USGS mapped approximately 90,000 nmi/sup 2/ of sea floor in the central and western Gulf of Mexico, seaward of the shelf edge. The Sigsbee Escarpment, the seaward edge of a salt front that extends from the western gulf to just west of the Mississippi Canyon, is marked by piles of debris along its base, and is breached by several submarine channels. One such meandering channel can be traced from the shelf edge, through the maze of diapirs on the slope, and out across the Sigsbee Abyssal Plain. This continuous transport pathway indicates the interaction of salt tectonics on sediment pathways and distribution. Numerous bed forms seaward of the Sigsbee Escarpment suggest that strong bottom currents are present. The northern gulf has three major submarine fans, each with different surface morphologies. The Rio Grande Fan has a braided channel system. The Mississippi Fan has a main channel that can be traced for approximately 100 km across the midfan, but most of the surface of the upper and midfan as well as the channel are buried by submarine slides or debris flows. Desoto Canyon Fan also has a continuous channel that has been filled or overrun in places by massive debris flows. Based on the sonographs, mass wasting appears to be an important process in distributing sediments in the deep water of the central gulf.

  9. 75 FR 63786 - Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic; Reef Fish Fishery of the Gulf of...

    Science.gov (United States)

    2010-10-18

    ... interim measures to reduce overfishing of gag in the Gulf of Mexico (Gulf). This proposed rule would... Fishery Management Council (Council). The intended effect of this proposed rule is to reduce overfishing... Act requires NMFS and regional fishery management councils to prevent overfishing and achieve, on a...

  10. Gulf of Maine Cooperative Bottom Longline Survey Database

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This database is for a bottom longline (fixed gear) survey executed in the western and central Gulf of Maine targeting complex rocky habitats. The survey is operated...

  11. 75 FR 2469 - Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic; Reef Fish Fishery of the Gulf of...

    Science.gov (United States)

    2010-01-15

    .... SUMMARY: NMFS issues this proposed rule to implement Amendment 31 to the Fishery Management Plan for the Reef Fish Resources of the Gulf of Mexico (FMP) prepared by the Gulf of Mexico Fishery Management... proposed rule is to balance the continued operation of the bottom longline component of the reef fish...

  12. Atlas of ecologically and commercially important areas in the southern Gulf of St. Lawrence

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-10-01

    This atlas provides useful baseline information for the environmental assessment of petroleum project proposals relative to sensitive areas and critical periods of fisheries resources in the southern Gulf of St. Lawrence. The southern boundary of the Gulf of St. Lawrence is bounded by the shores of western Cape Breton, southeastern New Brunswick and northern Nova Scotia. It is characterized as a coastal marine ecosystem because of the predominating effects of the rivers, but deeper areas have more in common with the Scotian Shelf and Slope and many common species move seasonally between the Gulf and the open Atlantic Ocean. This report is intended mostly for use by the Canada-Nova Scotia Offshore Petroleum Board (C-NSOPB), and to a lesser degree the Canada-Newfoundland Offshore Petroleum Board. The maps illustrate the known distribution of certain ecosystem components and known harvesting areas. The first part of the report describes the environmental setting of the southern Gulf of St. Lawrence. The report describes commercially important resources such as benthic, pelagic and shellfish species and other minor species, as well as aquaculture leases. It also discuses seals, whales, raptors, shorebirds and coastal waterfowl. The report identifies tourist areas, recreational parks and protected areas. Seasonality and sensitive timing of the resources are also summarized. refs., tabs., figs.

  13. Invasion of Asian tiger shrimp, Penaeus monodon Fabricius, 1798, in the western north Atlantic and Gulf of Mexico

    Science.gov (United States)

    Fuller, Pam L.; Knott, David M.; Kingsley-Smith, Peter R.; Morris, James A.; Buckel, Christine A.; Hunter, Margaret E.; Hartman, Leslie D.

    2014-01-01

    After going unreported in the northwestern Atlantic Ocean for 18 years (1988 to 2006), the Asian tiger shrimp, Penaeus monodon, has recently reappeared in the South Atlantic Bight and, for the first time ever, in the Gulf of Mexico. Potential vectors and sources of this recent invader include: 1) discharged ballast water from its native range in Asia or other areas where it has become established; 2) transport of larvae from established non-native populations in the Caribbean or South America via ocean currents; or 3) escape and subsequent migration from active aquaculture facilities in the western Atlantic. This paper documents recent collections of P. monodon from the South Atlantic Bight and the Gulf of Mexico, reporting demographic and preliminary phylogenetic information for specimens collected between North Carolina and Texas from 2006 through 2012. The increased number of reports in 2011 and 2012, ranging from 102 mm to 298 mm total length, indicates that an adult population is present in densities sufficient for breeding, which is indicative of incipient establishment. Based on these reports of P. monodon, its successful invasion elsewhere, and its life history, we believe that this species will become common in the South Atlantic Bight and Gulf of Mexico in less than 10 years. Penaeus monodon is an aggressive predator in its native range and, if established, may prey on native shrimps, crabs, and bivalves. The impacts of an established P. monodon population are potentially widespread (e.g., alterations in local commercial fisheries, direct and indirect pressures on native shrimp, crab and bivalve populations, and subsequent impacts on the populations of other predators of those organisms) and should be considered by resource managers. The impacts of P. monodon on native fauna and the source(s) or vector(s) of the invasion, however, remain unknown at this time.

  14. Trends in marine debris in the U.S. Caribbean and the Gulf of Mexico, 1996-2003

    Science.gov (United States)

    Ribic, Christine; Seba B. Sheavly,; Rugg, David J.

    2011-01-01

    Marine debris is a widespread and globally recognized problem. Sound information is necessary to understand the extent of the problem and to inform resource managers and policy makers about potential mitigation strategies. Although there are many short-term studies on marine debris, a longer-term perspective and the ability to compare among regions has heretofore been missing in the U.S. Caribbean and the Gulf of Mexico. We used data from a national beach monitoring program to evaluate and compare amounts, composition, and trends of indicator marine debris in the U.S. Caribbean (Puerto Rico and the U.S. Virgin Islands) and the Gulf of Mexico from 1996 to 2003. Indicator items provided a standardized set that all surveys collected; each was assigned a probable source: ocean-based, land-based, or general-source. Probable ocean-based debris was related to activities such as recreational boating/fishing, commercial fishing and activities on oil/gas platforms. Probable land-based debris was related to land-based recreation and sewer systems. General-source debris represented plastic items that can come from either ocean- or land-based sources; these items were plastic bags, strapping bands, and plastic bottles (excluding motor oil containers). Debris loads were similar between the U.S. Caribbean and the western Gulf of Mexico; however, debris composition on U.S. Caribbean beaches was dominated by land-based indicators while the western Gulf of Mexico was dominated by ocean-based indicators. Beaches along the eastern Gulf of Mexico had the lowest counts of debris; composition was dominated by land-based indicators, similar to that found for the U.S. Caribbean. Debris loads on beaches in the Gulf of Mexico are likely affected by Gulf circulation patterns, reducing loads in the eastern Gulf and increasing loads in the western Gulf. Over the seven years of monitoring, we found a large linear decrease in total indicator debris, as well as all source categories, for the U

  15. The United States and the Arab Gulf Monarchies

    International Nuclear Information System (INIS)

    Kechichian, J.A.

    1999-01-01

    The United States has enduring strategic interests in the Persian Gulf region. To understand these interests and the Usa policy towards the Arab Gulf Monarchies, the french institute of international relations (IFRI) proposes this document. The following chapters are detailed: the United States and the Arab Gulf Monarchies, overview, Chief Unites States Objective: Access to oil, re-evaluating United States Foreign Policy in the Gulf, the second term (Usa strategy). (A.L.B.)

  16. Seasonal phytoplankton blooms in the Gulf of Aden revealed by remote sensing

    KAUST Repository

    Gittings, John

    2016-11-25

    The Gulf of Aden, situated in the northwest Arabian Sea and linked to the Red Sea, is a relatively unexplored ecosystem. Understanding of large-scale biological dynamics is limited by the lack of adequate datasets. In this study, we analyse 15 years of remotely-sensed chlorophyll-a data (Chl-a, an index of phytoplankton biomass) acquired from the Ocean Colour Climate Change Initiative (OC-CCI) of the European Space Agency (ESA). The improved spatial coverage of OC-CCI data in the Gulf of Aden allows, for the first time, an investigation into the full seasonal succession of phytoplankton biomass. Analysis of indices of phytoplankton phenology (bloom timing) reveals distinct phytoplankton growth periods in different parts of the gulf: a large peak during August (mid-summer) in the western part of the gulf, and a smaller peak during November (mid-autumn) in the lower central gulf and along the southern coastline. The summer bloom develops rapidly at the beginning of July, and its peak is approximately three times higher than that of the autumnal bloom. Remotely-sensed sea-surface temperature (SST), wind-stress curl, vertical nutrient profiles and geostrophic currents inferred from the sea-level anomaly, were analysed to examine the underlying physical mechanisms that control phytoplankton growth. During summer, the prevailing southwesterlies cause upwelling along the northern coastline of the gulf (Yemen), leading to an increase in nutrient availability and enhancing phytoplankton growth along the coastline and in the western part of the gulf. In contrast, in the central region of the gulf, lowest concentrations of Chl-a are observed during summer, due to strong downwelling caused by a mesoscale anticyclonic eddy. During autumn, the prevailing northeasterlies enable upwelling along the southern coastline (Somalia) causing local nutrient enrichment in the euphotic zone, leading to higher levels of phytoplankton biomass along the coastline and in the lower central gulf

  17. Estuarine circulation reversals and related rapid changes in winter near-bottom oxygen conditions in the Gulf of Finland, Baltic Sea

    Directory of Open Access Journals (Sweden)

    T. Liblik

    2013-10-01

    Full Text Available The reversal of estuarine circulation caused by southwesterly wind forcing may lead to vanishing of stratification and subsequently to oxygenation of deep layers during the winter in the Gulf of Finland. Six conductivity, temperature, depth (CTD+oxygen transects (130 km long, 10 stations were conducted along the thalweg from the western boundary to the central gulf (21 December 2011–8 May 2012. Two bottom-mounted ADCP were installed, one near the western border and the second in the central gulf. A CTD with a dissolved oxygen sensor was deployed close to the western ADCP. Periods of typical estuarine circulation were characterized by strong stratification, high salinity, hypoxic conditions and inflow to the gulf in the near-bottom layer. Two circulation reversals were observed: one in December–January and one in February. The first reversal event was well developed; it caused the disappearance of the stratification and an increase in the oxygen concentration from hypoxic values to 270 μmol L−1 (to 6 mL L−1 throughout the water column along the thalweg and lasted approximately 1.5 months. Shifts from estuarine circulation to reversed circulation and vice versa were both associated with strong longitudinal (east–west gulf currents (up to 40 cm s−1 in the deep layer. The change from oxygenated to hypoxic conditions in the western near-entrance area of the gulf occurred very rapidly, within less than a day, due to the intrusion of the hypoxic salt wedge from the NE Baltic Proper. In the eastern part of the gulf, good oxygen conditions caused by reversals remained for a few months.

  18. Sea surface temperature variability in the North Western Mediterranean Sea (Gulf of Lion) during the Common Era

    Science.gov (United States)

    Sicre, Marie-Alexandrine; Jalali, Bassem; Martrat, Belen; Schmidt, Sabine; Bassetti, Maria-Angela; Kallel, Nejib

    2016-12-01

    This study investigates the multidecadal-scale variability of sea surface temperatures (SSTs) in the convection region of the Gulf of Lion (NW Mediterranean Sea) over the full past 2000 yr (Common Era) using alkenone biomarkers. Our data show colder SSTs by 1.7 °C over most of the first millennium (200-800 AD) and by 1.3 °C during the Little Ice Age (LIA; 1400-1850 AD) than the 20th century mean (17.9 °C). Although on average warmer, those of the Medieval Climate Anomaly (MCA) (1000-1200 AD) were lower by 1 °C. We found a mean SST warming of 2 °C/100 yr over the last century in close agreement with the 0.22 and 0.26 °C/decade values calculated for the western Mediterranean Sea from in situ and satellite data, respectively. Our results also reveal strongly fluctuating SSTs characterized by cold extremes followed by abrupt warming during the LIA. We suggest that the coldest decades of the LIA were likely caused by prevailing negative EA states and associated anticyclone blocking over the North Atlantic resulting in cold continental northeasterly winds to blow over Western Europe and the Mediterranean region.

  19. Drifter Observations of the Gulf of Maine Coastal Current.

    Science.gov (United States)

    Manning, J P; McGillicuddy, D J; Pettigrew, N R; Churchill, J H; Incze, L S

    2009-04-15

    Two-hundred and twenty seven satellite-tracked drifters were deployed in the Gulf of Maine (GoM) from 1988 to 2007, primarily during spring and summer. The archive of tracks includes over 100,000 kilometers logged thus far. Statistics such as transit times, mean velocities, response to wind events, and preferred pathways are compiled for various areas of the coastal GoM. We compare Lagrangian flow with Eulerian estimates from near-by moorings and evaluate drifter trajectories using Ekman theory and 3-D ocean circulation models. Results indicate that the Gulf of Maine Coastal Current is a strong and persistent feature centered on the 94 ± 23 meter isobath, but that particles: a) deviate from the seasonal-mean core fairly regularly, and are often re-entrained; b) follow a slower (9 cm/s), less-constrained path in the western portion off the coast of Maine relative to the eastern (16 cm/s) section; and c) can be affected by wind events and small scale baroclinic structures. Residence times calculated for each ½ degree grid cell throughout the GoM depict some regions (Eastern Maine and Western Nova Scotia) as being relatively steady, flow-through systems, while others (Penobscot, Great South Channel) have more variable, branching pathways. Travel times for drifters that are retained within the coastal current along the entire western side of the Gulf of Maine are typically less than two months (55 days).

  20. Succession Issues among Family Entrepreneursin Countries of the Gulf

    OpenAIRE

    Ralph Palliam; Hanas A. Cader; Charles Chiemeke

    2011-01-01

    Small family business succession is gaining increased prominence in Western societies. In Arab societies, literature on family business succession is virtually nonexistent. As Arab societies are embracing Western values, the issues of family business succession that are considered in the West will become major issues in Arab societies. This empirical study explores the transferability of theoretical constructs developed in the West to the countries of the Gulf Cooperation Council. The finding...

  1. Gulf Canada Resources Limited 1998 annual report

    International Nuclear Information System (INIS)

    1999-01-01

    A review of operations in 1998 and financial information from Gulf Canada Resources Limited is provided to keep shareholders abreast of company performance. Gulf Canada Resources Limited explores for, develops, produces and markets conventional and synthetic crude oil, natural gas and natural gas liquids. In 1998, the company's main operating centres were in western Canada (where it owns a nine per cent interest in the Syncrude Joint Venture), Indonesia, the North Sea and Australia. The report summarizes the company's energy resource activities, presents a detailed review of operations, and provides consolidated financial statements, and common share information. Although Gulf Canada Resources sold $ 1.2 billion worth of non-producing assets during the year, year end proved reserves of 838 million barrels of oil equivalent were less than ten per cent lower than a year earlier, reflecting reserve additions of 100 million barrels of oil equivalent. tabs., figs

  2. Influence of a big oil spill during the Gulf War on intertidal invertebrates

    International Nuclear Information System (INIS)

    Kado, Ryusuke; Tokuda, Hiroshi; Satoh, Hiroo; Hanawa, Shinichi; Murata, Yukiwo

    1993-01-01

    It is well known that a massive oil spill washed ashore from Al Khafji to the west side of the Abu Ali Peninsula in the western Arabian Gulf during the Gulf War. In these areas enormous amounts of oil are still left along most beaches at the high tide level. Surveys were carried out to clarify the effects of the massive oil spill

  3. 78 FR 40435 - Proposed Information Collection; Comment Request; Gulf of Alaska Trawl Fishery, Rationalization...

    Science.gov (United States)

    2013-07-05

    ... Collection; Comment Request; Gulf of Alaska Trawl Fishery, Rationalization Sociocultural Study AGENCY... management actions requiring equivalent information. Fisheries rationalization programs have an impact on... the implementation of a new, yet to be defined, rationalization program for the Gulf of Alaska trawl...

  4. Killer whale surveys conducted in the Aleutian Islands, Bering Sea, and western and central Gulf of Alaska by Alaska Fisheries Science Center, National Marine Mammal Laboratory from 2001-07-01 to 2010-07-12 (NCEI Accession 0137766)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This dataset is a compilation of line-transect data collected on surveys in the Aleutian Islands, Bering Sea, and western and central Gulf of Alaska, 2001 - 2010....

  5. Hydro- and morphodynamic tsunami simulations for the Ambrakian Gulf (Greece) and comparison with geoscientific field traces

    Science.gov (United States)

    Röbke, B. R.; Schüttrumpf, H.; Vött, A.

    2018-04-01

    In order to derive local tsunami risks for a particular coast, hydro- and morphodynamic numerical models that are calibrated and compared with sedimentary field data of past tsunami impacts have proven very effective. While this approach has widely been used with regard to recent tsunami events, comparable investigations into pre-/historical tsunami impacts hardly exist, which is the objective of this study focusing on the Ambrakian Gulf in northwestern Greece. The Ambrakian Gulf is located in the most active seismotectonic and by this most tsunamigenic area of the Mediterranean. Accordingly, palaeotsunami field studies have revealed repeated tsunami impacts on the gulf during the past 8000 yr. The current study analyses 151 vibracores of the Ambrakian Gulf coast in order to evaluate tsunami signals in the sedimentary record. Based on a hydro- and morphodynamic numerical model of the study area, various tsunami waves are simulated with the aim of finding scenarios that compare favourably with tsunami deposits detected in the field. Both, field data and simulation results suggest a decreasing tsunami influence from the western to the eastern Ambrakian Gulf. Various scenarios are needed to explain tsunami deposits in different parts of the gulf. Whereas shorter period tsunami waves (T = 30 min) from the south and west compare favourably with field data in the western gulf, longer period waves (T = 80 min) from a western direction show the best agreement with tsunami sediments detected in southwestern Aktio Headland and in the more central parts of the Ambrakian Gulf including Lake Voulkaria. Tsunamis from the southwest generally do not accord with field traces. Besides the spatial sediment distribution, the numerical model accurately reflects the sedimentary composition of the detected event deposits and reproduces a number of essential features typical of tsunamites, which were also observed in the field. Such include fining- and thinning-landward and the marine

  6. Impact of Intraseasonal Oscillations on the Tropical Cyclone Activity Over the Gulf of Mexico and Western Caribbean Sea in GFDL HiRAM

    Science.gov (United States)

    Gao, Kun; Chen, Jan-Huey; Harris, Lucas M.; Lin, Shian-Jiann; Xiang, Baoqiang; Zhao, Ming

    2017-12-01

    The tropical cyclones (TCs) that form over the warm waters in the Gulf of Mexico region pose a major threat to the surrounding coastal communities. Skillful subseasonal prediction of TC activity is important for early preparedness and reducing the TC damage in this region. In this study, we evaluate the performance of a 25 km resolution Geophysical Fluid Dynamics Laboratory (GFDL) High Resolution Atmospheric Model (HiRAM) in simulating the modulation of the TC activity in the Gulf of Mexico and western Caribbean Sea by the intraseasonal oscillation (ISO) based on multiyear retrospective seasonal predictions. We demonstrate that the HiRAM faithfully captures the observed influence of ISO on TC activity over the region of interest, including the formation of tropical storms and (major) hurricanes, as well as the landfalling storms. This is likely because of the realistic representation of the large-scale anomalies associated with boreal summer ISO over Northeast Pacific in HiRAM, especially the enhanced (reduced) moisture throughout the troposphere during the convectively enhanced (suppressed) phase of ISO. The reasonable performance of HiRAM suggests its potential for the subseasonal prediction of regional TC risk.

  7. Novel Autoantibody Serum and Cerebrospinal Fluid Biomarkers in Veterans with Gulf War Illness

    Science.gov (United States)

    2017-10-01

    using Western blot and ELISA assays. PURPOSE: Development of peripheral biomarkers for GWI. Scope of the Research: Serum and plasma from 250 Gulf War...basic protein (MBP), Myelin Associated Glycoprotein (MAG), CaMKII, alpha-synuclein, GFAP, S100B, Western Blot, ELISA , chronic fatigue syndrome (CFS...Milestone(s) Achieved: Site 1, 4 and 5 serum and CSF data collected and set up for laboratory assays ( ELISA , western blot). Autoantibody data shipped

  8. 77 FR 25116 - Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic; Spiny Lobster Fishery of the Gulf...

    Science.gov (United States)

    2012-04-27

    ...-BB44 Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic; Spiny Lobster Fishery of the Gulf... (Councils) have submitted Amendment 11 to the Fishery Management Plan for the Spiny Lobster Fishery of the... proposes to limit spiny lobster fishing using trap gear in certain areas in the exclusive economic zone off...

  9. Saudis map $450 million gulf spill cleanup

    International Nuclear Information System (INIS)

    Anon.

    1991-01-01

    This paper reports on Saudi Arabia which has earmarked about $450 million to clean up Persian Gulf beaches polluted by history's worst oil spills, created during the Persian Gulf crisis. Details of the proposed cleanup measures were outlined by Saudi environmental officials at a seminar on the environment in Dubai, OPEC News Agency reported. The seminar was sponsored by the Gulf Area Oil Companies Mutual Aid Organization, an environmental cooperative agency set up by Persian Gulf governments. Meantime, a Saudi government report has outlined early efforts designed to contain the massive oil spills that hit the Saudi coast before oil could contaminate water intakes at the huge desalination plants serving Riyadh and cooling water facilities at Al Jubail

  10. A red tide of Alexandrium fundyense in the Gulf of Maine

    Science.gov (United States)

    McGillicuddy, D. J.; Brosnahan, M. L.; Couture, D. A.; He, R.; Keafer, B. A.; Manning, J. P.; Martin, J. L.; Pilskaln, C. H.; Townsend, D. W.; Anderson, D. M.

    2014-05-01

    In early July 2009, an unusually high concentration of the toxic dinoflagellate Alexandrium fundyense occurred in the western Gulf of Maine, causing surface waters to appear reddish brown to the human eye. The discolored water appeared to be the southern terminus of a large-scale event that caused shellfish toxicity along the entire coast of Maine to the Canadian border. Rapid-response shipboard sampling efforts together with satellite data suggest the water discoloration in the western Gulf of Maine was a highly ephemeral feature of less than two weeks in duration. Flow cytometric analysis of surface samples from the red water indicated the population was undergoing sexual reproduction. Cyst fluxes downstream of the discolored water were the highest ever measured in the Gulf of Maine, and a large deposit of new cysts was observed that fall. Although the mechanisms causing this event remain unknown, its timing coincided with an anomalous period of downwelling-favorable winds that could have played a role in aggregating upward-swimming cells. Regardless of the underlying causes, this event highlights the importance of short-term episodic phenomena on regional population dynamics of A. fundyense.

  11. 76 FR 22345 - Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic; Reef Fish Fishery of the Gulf of...

    Science.gov (United States)

    2011-04-21

    ... effective January 1, 2011, and implement interim measures to reduce overfishing of gag in the Gulf of Mexico... effect of this proposed rule is to reduce overfishing of the gag resource in the Gulf. DATES: Written... to prevent overfishing and achieve, on a continuing basis, the optimum yield (OY) from federally...

  12. Investigating the chlorophyll-a variability in the Gulf of Taranto (North-western Ionian Sea) by a multi-temporal analysis of MODIS-Aqua Level 3/Level 2 data

    Science.gov (United States)

    Ciancia, Emanuele; Coviello, Irina; Di Polito, Carmine; Lacava, Teodosio; Pergola, Nicola; Satriano, Valeria; Tramutoli, Valerio

    2018-03-01

    The analysis of chlorophyll-a (chl-a) variability on a long-term basis could allow detecting possible issues in the whole marine ecosystem functioning. The Gulf of Taranto (Southern Italy), in the North-western Ionian Sea (Mediterranean Sea), has been affected by several environmental threats in the last decade, thus deserving the implementation of an adequate monitoring system able to provide accurate indications about the variability of the most relevant bio-optical parameters. In this context, the main objectives of this study are to investigate the long-term chl-a variability in the Gulf of Taranto and identify the occurrence of any past spatiotemporal anomalies by implementing the multi-temporal Robust Satellite Technique (RST) on a 12-year (2003-2015) period of MODIS/AQUA Level 3/Level 2 chlorophyll-a data. The achieved results show well-clustered near-surface positive chl-a anomalies during the January-February 2011 period. This detected offshore phytoplankton bloom may be related to sub-basin processes, such as the inflow of the Western Adriatic Coastal Current (WACC), probably fostered by the cyclonic reversal of the Bimodal Oscillating System (BiOS) mechanism. Therefore, the RST approach proved successful in detecting chl-a anomalous variations with a high level of confidence regardless of the absolute value measured, thus suggesting its exportability in other areas with different site-setting conditions.

  13. Horizontal distribution of near-inertial waves in the western Gulf of Mexico: Eulerian vs Lagrangian.

    Science.gov (United States)

    Pallas Sanz, E.; García-Carrillo, P.; Garcia Gomez, B. I.; Lilly, J. M.; Perez-Brunius, P.

    2016-02-01

    The time-average horizontal distribution of the near-inertial waves (NIWs) on the western Gulf of Mexico (GoM) is investigated using horizontal velocity data obtained from Lagrangian trajectories of 200 surface drifters drogued at 50m and deployed between September 2008 and September 2012. Preliminary results suggest maximum time-averaged near-inertial circle radius of 2.6km located in the southern Campeche bay near [22N,95W]; implying an inertial velocity of about 0.14m/s. Similar conclusions are delineated using horizontal velocity data obtained from 21 moorings deployed in the western GoM during the same time period. Maximum near-inertial kinetic energy and clockwise spectral energy is found in the mooring LNK3500 located at 21.850N and 94.028W. Maximum inertial circles measured with mooring data, however, are of about 1.6km leading to inertial currents of 0.087m/s, approximately a 40% smaller. This discrepancy seems to be due to the different depth level of the measurements and the bandwidth used to extract the near-inertial oscillations from the total flow. The time-average horizontal distributions of wind work computed from Lagrangian and Eulerian data are compared and they are not consistent with the time-averaged NIW field. The differences are not well understood but we speculate they may be due to the different time scales of wind fluctuations in the northwestern GoM compared to those observed in the Bay of Campeche, together with the change of sign of the background vorticity in the region; being negative (anticyclonic) in the northern GoM and positive (cyclonic) in the Bay of Campeche.

  14. Last millennium sedimentation in the Gulf of Cariaco (NE Venezuela): Evidence for morphological changes of gulf entrance and possible relations with large earthquakes

    Science.gov (United States)

    Aguilar, Iliana; Beck, Christian; Audemard, Franck; Develle, Anne-Lise; Boussafir, Mohammed; Campos, Corina; Crouzet, Christian

    2016-01-01

    The Cariaco Basin and the Gulf of Cariaco in Venezuela are two major basins along the seismogenic El Pilar right lateral fault, among which the Cariaco Basin is a pull-apart. Both basins are sites of anoxia and organic-rich deposits. To examine whether the sediments in the Gulf of Cariaco have recorded traces of historical or prehistorical earthquakes, we extracted and analyzed twelve 1 m-long gravity cores, sampling the last millennium sedimentation. We focused on analyzing the sediment sources with different techniques (particle size analysis, XRF, loss on ignition tests, magnetic properties, Rock-Eval pyrolysis, 14C dating). The results confirm that major upwelling occurs at the western gulf entrance and makes deep water flowing from the Cariaco Basin into the Gulf of Cariaco. These flows carry an organic-rich suspended load. Furthermore, we found evidence of a particular, widespread fine-grained siliciclastic deposit (named SiCL3) within the gulf, whose age suggests that it likely formed during the large 1853 AD earthquake that stroke the Cumaná city. We suggest that the earthquake-induced large submarine landslides that modified the topography of the gulf's entrance, which in turn promoted upwelling and open marine water flows from the Cariaco Basin. The layer SiCL3 would be the sediment load remobilized during this chain of events.

  15. CEER 2014 Dedicated Session Proposal: Restoring Water Quality along with Restoring the Gulf of Mexico

    Science.gov (United States)

    This session focuses on the importance of restoring water quality as part of the larger Gulf of Mexico restoration efforts. Water quality has been identified as a significant indicator of water body condition, and Gulf waters have been impacted by increased urban development, agr...

  16. Arsenic and arsenic species in shellfish and finfish from the western Arabian Gulf and consumer health risk assessment

    International Nuclear Information System (INIS)

    Krishnakumar, Periyadan K.; Qurban, Mohammad A.; Stiboller, Michael; Nachman, Keeve E.; Joydas, Thadickal V.; Manikandan, Karuppasamy P.; Mushir, Shemsi Ahsan; Francesconi, Kevin A.

    2016-01-01

    This study reports the levels of total arsenic and arsenic species in marine biota such as clams (Meretrix meretrix; N = 21) and pearl oyster (Pinctada radiata; N = 5) collected from nine costal sites in Jan 2014, and cuttlefish (Sepia pharaonis; N = 8), shrimp (Penaeus semisulcatus; N = 1), and seven commercially important finfish species (N = 23) collected during Apr–May 2013 from seven offshore sites in the western Arabian Gulf. Total As and As species such as dimethylarsinic acid (DMA), arsenobetaine (AB), trimethylarsine oxide (TMAO), arsenocholine (AC), tetramethylarsonium ion (Tetra), arsenosugar-glycerol (As-Gly) and inorganic As (iAs) were determined by using ICPMS and HPLC/ICPMS. In bivalves, the total As concentrations ranged from 16 to 118 mg/kg dry mass; the toxic iAs fraction contributed on average less than 0.8% of the total As, while the nontoxic AB fraction formed around 58%. Total As concentrations for the remaining seafood (cuttlefish, shrimp and finfish) ranged from 11 to 134 mg/kg dry mass and the iAs and AB fractions contributed on average 0.03% and 81% respectively of the total As. There was no significant relationship between the tissue concentrations of total As and iAs in the samples. There was also no significant relationship between As levels in seafood and geographical location or salinity of the waters from which samples were collected. Based on our results, we recommend introducing a maximum permissible level of arsenic in seafood from the Gulf based on iAs content rather than based on total As. Our analyses of cancer risks and non-cancer hazards identified non-negligible risks and the potential for hazards; the greatest risks were identified for expatriate consumers of bivalves and high-end consumers of seafood. Despite this, many uncertainties remain that would be best addressed by further analyses. - Highlights: • Arabian Gulf seafood contains relatively high concentrations of total arsenic. • Non-toxic arsenobetaine forms

  17. Arsenic and arsenic species in shellfish and finfish from the western Arabian Gulf and consumer health risk assessment

    Energy Technology Data Exchange (ETDEWEB)

    Krishnakumar, Periyadan K., E-mail: kkumarpk@kfupm.edu.sa [Center for Environment and Water, Research Institute, King Fahd University of Petroleum and Minerals, Dhahran 31261 (Saudi Arabia); Qurban, Mohammad A. [Center for Environment and Water, Research Institute, King Fahd University of Petroleum and Minerals, Dhahran 31261 (Saudi Arabia); Stiboller, Michael [Institute of Chemistry-Analytical Chemistry, NAWI Graz, University of Graz, A-8010 Graz (Austria); Nachman, Keeve E. [Johns Hopkins Bloomberg School of Public Health, Department of Environmental Health Sciences, Baltimore, MD (United States); Joydas, Thadickal V.; Manikandan, Karuppasamy P.; Mushir, Shemsi Ahsan [Center for Environment and Water, Research Institute, King Fahd University of Petroleum and Minerals, Dhahran 31261 (Saudi Arabia); Francesconi, Kevin A. [Institute of Chemistry-Analytical Chemistry, NAWI Graz, University of Graz, A-8010 Graz (Austria)

    2016-10-01

    This study reports the levels of total arsenic and arsenic species in marine biota such as clams (Meretrix meretrix; N = 21) and pearl oyster (Pinctada radiata; N = 5) collected from nine costal sites in Jan 2014, and cuttlefish (Sepia pharaonis; N = 8), shrimp (Penaeus semisulcatus; N = 1), and seven commercially important finfish species (N = 23) collected during Apr–May 2013 from seven offshore sites in the western Arabian Gulf. Total As and As species such as dimethylarsinic acid (DMA), arsenobetaine (AB), trimethylarsine oxide (TMAO), arsenocholine (AC), tetramethylarsonium ion (Tetra), arsenosugar-glycerol (As-Gly) and inorganic As (iAs) were determined by using ICPMS and HPLC/ICPMS. In bivalves, the total As concentrations ranged from 16 to 118 mg/kg dry mass; the toxic iAs fraction contributed on average less than 0.8% of the total As, while the nontoxic AB fraction formed around 58%. Total As concentrations for the remaining seafood (cuttlefish, shrimp and finfish) ranged from 11 to 134 mg/kg dry mass and the iAs and AB fractions contributed on average 0.03% and 81% respectively of the total As. There was no significant relationship between the tissue concentrations of total As and iAs in the samples. There was also no significant relationship between As levels in seafood and geographical location or salinity of the waters from which samples were collected. Based on our results, we recommend introducing a maximum permissible level of arsenic in seafood from the Gulf based on iAs content rather than based on total As. Our analyses of cancer risks and non-cancer hazards identified non-negligible risks and the potential for hazards; the greatest risks were identified for expatriate consumers of bivalves and high-end consumers of seafood. Despite this, many uncertainties remain that would be best addressed by further analyses. - Highlights: • Arabian Gulf seafood contains relatively high concentrations of total arsenic. • Non-toxic arsenobetaine forms

  18. Human Capital Formation in the Gulf and MENA Region.

    Science.gov (United States)

    Shaw, Ken E.

    2001-01-01

    Recent developments in human capital formation theories are particularly relevant to the Gulf and Middle Eastern and North African regions. Discusses recent western reconfigurations of the theory, noting how much local work must be done to reshape theory appropriately in the Middle East and explaining how issues relating to employment, education,…

  19. 76 FR 41766 - Gulf of Mexico Fishery Management Council; Public Meeting

    Science.gov (United States)

    2011-07-15

    ... group Spanish mackerel, and Gulf group cobia. It also contains measures to remove cero, little tunny... separate cobia into Atlantic and Gulf migratory groups. Similar measures are being proposed for the...

  20. Analysis of Potential Energy Corridors Proposed by the Western Electricity Coordinating Council

    Energy Technology Data Exchange (ETDEWEB)

    Kuiper, James A.; Cantwell, Brian J.; Hlava, Kevin J.; Moore, H Robert; Orr, Andrew B.; Zvolanek, Emily A.

    2014-02-24

    This report, Analysis of Potential Energy Corridors Proposed by the Western Electricity Coordinating Council (WECC), was prepared by the Environmental Science Division of Argonne National Laboratory (Argonne). The intent of WECC’s work was to identify planning-level energy corridors that the Department of Energy (DOE) and its affiliates could study in greater detail. Argonne was tasked by DOE to analyze the WECC Proposed Energy Corridors in five topic areas for use in reviewing and revising existing corridors, as well as designating additional energy corridors in the 11 western states. In compliance with Section 368 of the Energy Policy Act of 2005 (EPAct), the Secretaries of Energy, Agriculture, and the Interior (Secretaries) published a Programmatic Environmental Impact Statement in 2008 to address the proposed designation of energy transport corridors on federal lands in the 11 western states. Subsequently, Records of Decision designating the corridors were issued in 2009 by the Bureau of Land Management (BLM) and the U.S. Forest Service (USFS). The 2012 settlement of a lawsuit, brought by The Wilderness Society and others against the United States, which identified environmental concerns for many of the corridors requires, among other things, periodic reviews of the corridors to assess the need for revisions, deletions, or additions. A 2013 Presidential Memorandum requires the Secretaries to undertake a continuing effort to identify and designate energy corridors. The WECC Proposed Energy Corridors and their analyses in this report provide key information for reviewing and revising existing corridors, as well as designating additional energy corridors in the 11 western states. Load centers and generation hubs identified in the WECC analysis, particularly as they reflect renewable energy development, would be useful in reviewing and potentially updating the designated Section 368 corridor network. Argonne used Geographic Information System (GIS) technology to

  1. Vascular and Skeletal Muscle Function in Gulf War Veterans Illness

    Science.gov (United States)

    2017-07-01

    DNA, RNA, and protein from muscle tissue samples. Prepare cDNA from RNA samples. 4-28 Pending Complete qPCR and Western Blot to assess genes and...Lab from cDNA samples 24-30 Pending Interpret results and identify candidate genes related to Gulf War Illness 24-30 Pending Milestone: Complete

  2. Opisthobranchs from the western Indian Ocean, with descriptions of two new species and ten new records (Mollusca, Gastropoda

    Directory of Open Access Journals (Sweden)

    Nathalie Yonow

    2012-05-01

    Full Text Available Seventy species of opisthobranchs are described in this work based on collections from the Persian Gulf, Socotra, Kenya, Zanzibar, Madagascar, La Réunion, Mauritius, the Seychelles, the Maldives, and Sri Lanka. Ten species are newly recorded from the western Indian Ocean and four species are recorded in the scientific literature for the first time since their original descriptions. Two species are described as new: Cyerce bourbonica sp. n. from La Réand Doriopsilla nigrocera sp. n. from the Persian Gulf coast of Saudi Arabia. Chromodoris cavae is removed from its synonymy with C. tennentana and redescribed from specimens from La Réunion, while several new synonyms are proposed for some commonly occurring species. Risbecia bullockii is recorded for the second time from the Indian Ocean and assigned to its correct genus.

  3. Gulf of Mexico sales 142 and 143: Central and western planning areas. Draft environmental impact statement. Volume 2. Sections IV.D through IX

    International Nuclear Information System (INIS)

    1992-04-01

    The EIS is a description of the environmental aspects and impacts of oil and gas activities resulting from these lease sales or the states bordering the Gulf of Mexico. The report provides a description of the areas, the affected environment, and the environmental consequences; it discusses the proposed actions, issues and areas of concern, and the major differences of holding these lease sales

  4. Gulf of Mexico Sales 142 and 143: Central and western planning areas. Draft environmental impact statement. Volume 1. Sections I through IV.C

    International Nuclear Information System (INIS)

    1992-04-01

    The EIS is a description of the environmental aspects and impacts of oil and gas activities resulting from these lease sales or the states bordering the Gulf of Mexico. The report provides a description of the areas, the affected environment, and the environmental consequences; it discusses the proposed actions, issues and areas of concern, and the major differences of holding these lease sales

  5. Implementing the Western Gulf of Maine Area Closure: The Role and Perception of Fishers' Ecological Knowledge

    Directory of Open Access Journals (Sweden)

    Mateja Nenadovic

    2012-03-01

    Full Text Available The debate about the quality of fishers' ecological knowledge (FEK and its value to fisheries management has long been present in the literature. This study sought to understand the role of FEK in a particular fisheries management decision in the U.S. and to evaluate the extent that different stakeholder groups recognized and used FEK in fisheries policy creation. The 1998 implementation of the Western Gulf of Maine Area Closure (WGoMAC was a management response to the rapid decline in the Gulf of Maine cod (Gadus morhua stock. Using structured surveys and semistructured interviews, we collected information from major stakeholder groups that were active during the creation of the area closure: New England Fishery Management Council (NEFMC members, Groundfish Advisory Panel members, Groundfish Plan Development Team members, and Maine groundfishers. Results indicated that 95% of respondents believed that fishers possess ecological knowledge that could be useful in the fishery management process. In the case of the WGoMAC creation, 62% of respondents indicated that FEK played a role in the decision, even though 85% recognized obstacles to the use of FEK in the management process. Interviews demonstrated that FEK was able to improve upon the spatial resolution of scientific data by identifying seasonal migration patterns of prespawning cod and behavioral differences between juvenile and adult cod. This information was a product of a peer-reviewed process among groundfishers and it was used to fine-tune the exact location of the closure. These findings suggest that there are ways to incorporate FEK into fishery management for the purposes of stock and habitat conservation. Additionally, the benefit of having ecological information that spans different spatial scales for fishery management was observed in this study. By combining the knowledge systems of fishers and fisheries scientists, managers were able to capture ecological information at a finer

  6. Crust and mantle of the gulf of Mexico

    Science.gov (United States)

    Moore, G.W.

    1972-01-01

    A SEEMING paradox has puzzled investigators of the crustal structure of the Gulf of Mexico since Ewing et al.1 calculated that a unit area of the rather thick crust in the gulf contains less mass than does a combination of the crust and enough of the upper mantle to make a comparable thickness in the Atlantic Ocean. They also noted that the free-air gravity of the gulf is essentially normal and fails by a large factor to be low enough to reflect the mass difference that they calculated. We propose a solution to this problem. ?? 1972 Nature Publishing Group.

  7. A Paleomagnetic Investigation of Large-Scale Vertical Axis Rotations in Coastal Sonora: Evidence for Transtensional Proto-Gulf Deformation

    Science.gov (United States)

    Herman, S. W.; Gans, P. B.

    2006-12-01

    A paleomagnetic investigation into possible vertical axis rotations has been conducted in the Sierra el Aguaje and Sierra Tinajas del Carmen, Sonora, Mexico, in order assess proposed styles for oblique continental rifting in the Gulf of California. Two styles of rifting have been proposed; (1) strain partitioning (Stock and Hodges, 89), and (2) transtension (Gans, 97), for the Proto-Gulf period of the Gulf of California. The presence of large- scale vertical axis rotations would lend weight to the argument for transtension. The Sierra el Aguaje and Sierra Tinajas del Carmen are located in southwestern coastal Sonora, Mexico. The ranges represent the eastern-rifted margin of the central Gulf of California. This is one of the few areas of that margin which is entirely above water, with new ocean crust of the Guaymas basin lying immediately offshore of the western edge of the ranges. The ranges are composed of volcanic units and their corresponding volcaniclastic units that are the result of persistent magmatic activity between 20 and 8.8 Ma, including three packages of basalt and andesite that make excellent paleomagnetic recorders. Based on cross cutting relations and geochronologic data for pre-, syn-, and post-tectonic volcanic units, most of the faulting and tilting in the Sierra El Aguaje and Sierra Tinajas del Carmen is bracketed between 11.9 and 9.0 Ma, thus falling entirely within Proto-Gulf time. Existing field relations suggest the presence of large (>45°) vertical axis rotations in this region. This evidence includes: a) abrupt changes in the strike of tilted strata in different parts of the range b) ubiquitous NE-SW striking faults with left lateral-normal oblique slip, that terminate against major NW-trending right lateral faults, and c) obliquity between the general strike of tilted strata and the strike of faults. The results of the paleomagnetic investigation are consistent with the field evidence and show large clockwise rotations between ~30° and

  8. Modeling of the Foca-Uzunada magnetic anomaly and thermal structure in the gulf of Izmir, western Turkey

    Science.gov (United States)

    Aydemir, Attila; Bilim, Funda; Cifci, Gunay; Okay, Seda

    2018-05-01

    The Gulf of Izmir (GoI) is one of the largest gulfs in the Aegean Sea, Turkey. There is a large magnetic anomaly extending in the NE-SW direction between Foca and Uzunada (Uzun Island) in the gulf. Previously, Curie Point Depth (CPD), geothermal gradient, heat-flow and radiogenic heat production maps of the onshore part of the Aegean region were constructed from the aeromagnetic data. In this study, the same maps except radiogenic heat production map are presented for the offshore part and the largest magnetic anomaly in the northern part of the gulf is focused, particularly. As a result, the thermal structure of GoI is clearly defined and according to the results of this study, CPD values were found from 7 km in the NE of Foca to 10 km through the south of the gulf. The geothermal gradient values vary between 50 and 80 °C/km. Maximum heat flow values around the anomaly are calculated as 200 and 215 mW/m2 according to the thermal conductivity coefficients of 2.5 W m-1 K-1 and 2.7 W m-1 K-1, respectively. Although the anomaly is located in the Izmir Gulf; CPD, geothermic gradient, heat flow anomalies are shifted through the north of Foca and Aliaga towns in the Candarli Bay. This prominent anomaly in the Gulf of Izmir is associated with the magmatics that were encountered at 969 m in the Foca-1 well although it was drilled about 2 km away from the outermost closed contour of the magnetic anomaly. The anomaly is also modeled three dimensionally (3D) in this study. In the model map, the top of the causative body is completely located in the outer part of the gulf, and is very shallow at about 0.5 km while its bottom is inclined through the west of Cigli and Menemen. From this viewpoint, it is possible to suggest that the causative body is inclined through the Foca Peninsula. However, its closed contours are in the NE direction, through the Candarli Bay. Top depth of the causative body is also calculated from the basement horizon on the seismic sections crossing this

  9. 75 FR 1408 - Pick-Sloan Missouri Basin Program, Eastern and Western Division Proposed Project Use Power Rate

    Science.gov (United States)

    2010-01-11

    ... of Proposed Pick-Sloan Missouri Basin Program, Eastern and Western Divisions, Project Use Power Rate...) for Project Use Power for the Pick-Sloan Missouri Basin Program (P-SMBP), Eastern and Western... DEPARTMENT OF THE INTERIOR Bureau of Reclamation Pick-Sloan Missouri Basin Program, Eastern and...

  10. How does the Red Sea outflow water interact with Gulf of Aden Eddies?

    Science.gov (United States)

    Ilıcak, Mehmet; Özgökmen, Tamay M.; Johns, William E.

    As the Red Sea overflow water (RSOW) enters the Gulf of Aden (GOA), it interacts with a sequence of nearly barotropic, mesoscale eddies originating in the Indian Ocean. To investigate how these eddies impact the dispersal and eastward transport of the RSOW toward the Indian Ocean, a high resolution 3D regional model is employed to explore systematically the interaction between the RSOW and mesoscale eddies. Two types of experiments are conducted. In the first set, we simulate the behavior of RSOW in the presence of an idealized cyclone and an idealized anticyclone. The second type of simulation involves nesting of the regional model (ROMS) within a data-assimilating global model (HYCOM), in which a sequence of mesoscale eddies entering the Gulf of Aden is realistically captured. This simulation is integrated for one year, and includes a simple representation of the seasonality of the RSOW. Bower et al. (2002) suggest that the Red Sea overflow might be a western boundary undercurrent. Consistent with these expectations, the idealized simulations show that the preferred pathway of the RSOW in the absence of eddies is along the coast of Somalia (southern continental shelf) as a western boundary undercurrent. Simultaneously, a cyclonic circulation is generated in the far western GOA due to vortex stretching by the descending outflow. The presence of a cyclone in the western GOA increases the peak RSOW transport, but the cyclone itself rapidly loses its coherence after interacting with the rough topography in the western GOA. The presence of an anticyclone tends to block the preferred boundary pathway and inhibits the eastward transport of the RSOW. The eddies also result in substantially increased mixing of the RSOW in the western GOA. On the basis of the more realistic ROMS experiment, it is found that the modeled RSOW leaves the western part of the Gulf of Aden in short episodic bursts with transports that are an order of magnitude greater than that associated with

  11. Iran’s scientific dominance and the emergence of South-East Asian countries in the Arab Gulf Region

    Energy Technology Data Exchange (ETDEWEB)

    Moed, H.

    2016-07-01

    A longitudinal bibliometric analysis of publications indexed in Thomson Reuters' Incites and Elsevier's Scopus, and published from the Arab Gulf States and neighbouring countries, shows clear effects of major political events during the past 35 years. Predictions made in 2006 by the US diplomat Richard N. Haass on political changes in the Middle East have come true in the Gulf States’ national scientific research systems, to the extent that Iran has become in 2015 by far the leading country in the Arab Gulf, and South-East Asian countries including China, Malaysia and South Korea have become major scientific collaborators, displacing the USA and other large Western countries. But collaborations patterns among Gulf States show no apparent relationship with differences in Islam denominations. (Author)

  12. Late Glacial and Holocene gravity deposits in the Gulf of Lions deep basin, Western Mediterranean

    Science.gov (United States)

    Dennielou, B.; Bonnel, C.; Sultan, N.; Voisset, M.; Berné, S.; Beaudouin, C.; Guichard, F.; Melki, T.; Méar, Y.; Droz, L.

    2003-04-01

    Recent investigations in the Gulf of Lions have shown that complex gravity processes and deposits occurred in the deep basin since the last Glacial period. Besides the largest western Mediterranean turbiditic system, Petit-Rhône deep-sea fan (PRDSF), whose built-up started at the end of Pliocene, several sedimentary bodies can be distinguished: (1) The turbiditic Pyreneo-Languedocian ridge (PLR), at the outlet of the Sète canyon network, whose activity is strongly connected to the sea level and the connection of the canyons with the rivers. It surface shows long wave-length sediment waves, probably in relation with the turbiditic overspill. (2) An acoustically chaotic unit, filling the topographic low between the PRDSF and the PLR, the Lower Interlobe Unit. Possible source areas are the Sète canyon and/or the Marti Canyon. (3) An acoustically transparent unit, below the neofan, filling the same topographic low, the Western Transparent Unit, interpreted as a debris-flow. Recent sediment cores have shown that this sedimentary is composed of folded, laminated mud, both in its northern and southern fringes. (4) The Petit-Rhône neofan, a channelized turbiditic lobe resulting from the last avulsion of the Petit-Rhône turbiditic channel and composed of two units. The lower, acoustically chaotic facies unit, corresponding to an initial stage of the avulsion, similar to the HARP facies found on the Amazon fan. The upper, transparent, slightly bedded, channel-levee shaped unit, corresponding to the channelized stage of the avulsion. (5) Up to ten, Deglacial to Holocene, thin, fine sand layers, probably originating from shelf-break sand accumulations, through the Sète canyon network. (6) Giant scours, in the southern, distal part of the neofan, possibly linked to turbiditic overflow from the neo-channel, probably corresponding to channel-lobe transition zone features (Wynn et al. 2002). Recent investigations have shown no evidence of bottom current features.

  13. A basis for environmental monitoring in the gulf of Batabano applying hydrodynamic simulations

    International Nuclear Information System (INIS)

    Arriaza Oliveros, L.; Rodas Fernandez, L.; Simanca Cardenas, J.; Milian Lorenz, D.E.; Romero Suarez, P.L.

    2006-01-01

    The spreading of organic compounds and wastes in seawater depend on the space-time distribution of marine currents. Therefore, for the Environmental Monitoring of sea waters in the Cuban shelf it is necessary to include the marine current variable. A hydrodynamic model is applied in the Gulf of Batabano. The model was validated by using marine currents observed. Any organic compound or wastes in the Batabano or La Broa will moved slowly (1 + - 0.0529 cm/s and 4.7 + - 0.0529 cm/s) until the center and southwestern part of the gulf and the western part of the Isla de la Juventud, affecting for a long time period the SW coast of the gulf. Any pollution in ocean waters adjacent to this shelf will go through the open boundary with a mean velocity between 15 + - 0.25 cm/s and 29.5 + - 0.25 cm/s until the northern part of the Isla de la Juventud; it affects quickly this island and the southwestern and southeastern coasts of the gulf; the pollution will go slowly (1 + - 0.0529 cm/s and 3 + - 0.0529 cm/s) until the central and northeastern part of the gulf

  14. Definition of Greater Gulf Basin Lower Cretaceous and Upper Cretaceous Lower Cenomanian Shale Gas Assessment Unit, United States Gulf of Mexico Basin Onshore and State Waters

    Science.gov (United States)

    Dennen, Kristin O.; Hackley, Paul C.

    2012-01-01

    An assessment unit (AU) for undiscovered continuous “shale” gas in Lower Cretaceous (Aptian and Albian) and basal Upper Cretaceous (lower Cenomanian) rocks in the USA onshore Gulf of Mexico coastal plain recently was defined by the U.S. Geological Survey (USGS). The AU is part of the Upper Jurassic-Cretaceous-Tertiary Composite Total Petroleum System (TPS) of the Gulf of Mexico Basin. Definition of the AU was conducted as part of the 2010 USGS assessment of undiscovered hydrocarbon resources in Gulf Coast Mesozoic stratigraphic intervals. The purpose of defining the Greater Gulf Basin Lower Cretaceous Shale Gas AU was to propose a hypothetical AU in the Cretaceous part of the Gulf Coast TPS in which there might be continuous “shale” gas, but the AU was not quantitatively assessed by the USGS in 2010.

  15. Preliminary observations of environmental damage due to the Gulf War

    International Nuclear Information System (INIS)

    El-Baz, F.

    1992-01-01

    Preparing for and conducting the Gulf War resulted in much damage to the environment of the region. The first and most visible effect is related to the damage caused by oil well fires in terms of air pollution as well as the potential damage to the petroleum reservoirs. The second detrimental effect has been caused by the oil spill in the Gulf water. Hundreds of miles of the western coastline of the Gulf are already covered with oil. Petroleum 'mats' have settled on coral reefs and have reduced Gulf water productivity. Foremost among the irreparable damages are changes to the terrain due to the digging of trenches, building walls of soil and otherwise disturbing the desert pavement in and around Kuwait. Disruption of the, usually, one-grain thick layer of pebbles on the desert floor exposes soil to wind action. Changing the contours of the normally flat land increases resistance to the wind and increases the potential of particle transport until the land is peneplained. This condition will increase the frequency and the ferocity of dust storms in the region. It will also result in the formation of new sand dunes; sand drifts already exist along roads in northern Kuwait. It is believed that the detrimental effects on the atmosphere will last for years, on the Gulf water for decades, and on the desert surface for centuries. (author). 12 refs, 1 fig

  16. Preliminary observations of environmental damage due to the Gulf War

    Energy Technology Data Exchange (ETDEWEB)

    El-Baz, F [Boston Univ., Boston, MA (United States). Center for Remote Sensing

    1992-02-01

    Preparing for and conducting the Gulf War resulted in much damage to the environment of the region. The first and most visible effect is related to the damage caused by oil well fires in terms of air pollution as well as the potential damage to the petroleum reservoirs. The second detrimental effect has been caused by the oil spill in the Gulf water. Hundreds of miles of the western coastline of the Gulf are already covered with oil. Petroleum 'mats' have settled on coral reefs and have reduced Gulf water productivity. Foremost among the irreparable damages are changes to the terrain due to the digging of trenches, building walls of soil and otherwise disturbing the desert pavement in and around Kuwait. Disruption of the, usually, one-grain thick layer of pebbles on the desert floor exposes soil to wind action. Changing the contours of the normally flat land increases resistance to the wind and increases the potential of particle transport until the land is peneplained. This condition will increase the frequency and the ferocity of dust storms in the region. It will also result in the formation of new sand dunes; sand drifts already exist along roads in northern Kuwait. It is believed that the detrimental effects on the atmosphere will last for years, on the Gulf water for decades, and on the desert surface for centuries. (author). 12 refs, 1 fig.

  17. 75 FR 73982 - Fisheries of the Exclusive Economic Zone Off Alaska; Longnose Skate in the Western Regulatory...

    Science.gov (United States)

    2010-11-30

    ...NMFS is prohibiting retention of longnose skate in the Western Regulatory Area of the Gulf of Alaska (GOA). This action is necessary because the 2010 total allowable catch (TAC) of longnose skate in the Western Regulatory Area of the GOA has been reached.

  18. Lower Cretaceous Source Rock and its Implication for the Gulf of Guinea Petroleum System

    International Nuclear Information System (INIS)

    Frost, B.R.; Griffith, R.C.

    2002-01-01

    Current petroleum system models for the Gulf of Guinea propose Tertiary-age deltaic organic material as the principal source for the hydrocarbons found there. Although previous workers recognized numerous difficulties and inconsistencies, no alternative model has been resented to adequately explain the complete petroleum system. We propose that the principal source rock for the Gulf of Guinea system occurs in upper lower Cretaceous-age shales at the rift-drift transition. Tertiary loading and the consequent maturation of this lower Cretaceous source rock can explain the controls on tap formation, reservoir distribution and hydrocarbon types found in the Gulf of Guinea

  19. Breast Cancer Epidemiology in Gulf Cooperation Council Countries: A Regional and International Comparison.

    Science.gov (United States)

    Albeshan, Salman M; Mackey, Martin G; Hossain, Syeda Z; Alfuraih, Abdulrahman A; Brennan, Patrick C

    2017-07-13

    Breast cancer is the most frequently diagnosed noncutaneous malignancy in women living in Gulf Cooperation Council countries. The present report aimed to highlight the similarities and variations in breast cancer incidence, age at diagnosis, clinicopathologic features, molecular characteristics, and lifestyle factors that contribute to an increasing incidence of breast cancer compared with neighboring Arab and westernized countries. The data presented, although having important implications for policy makers, also highlights the need for further research. Such research would ensure that effective prevention and detection strategies are tailored to the specific needs of the Gulf women such that the management of breast cancer is optimized. Copyright © 2017 Elsevier Inc. All rights reserved.

  20. The GCC States of the Persian Gulf and Asia Energy Relations

    International Nuclear Information System (INIS)

    Kellner, Thierry

    2012-01-01

    Since the 2000's, China's and India's needs for hydrocarbons, coming on top of those of older industrialized Asian countries (Japan and South Korea), have considerably strengthened customer-supplier links between Asia in general and the Persian Gulf, in the energy field. The Asian market plays a major economic role for countries of the Gulf Cooperation Council (GCC). As a group, they export three and a half times as much to the Japanese, Korean, Indian and Chinese markets than to the European Union (EU27) and the United States combined (Euro 203 billion compared to Euro 58 billion, in 2010). Despite the growing economic importance of Asia to the GCC countries, the Gulf monarchies still have a clear interest in their relations with their traditional Western partners, especially in terms of investments and technologies. It is in their interests to maintain strong economic links with Europe and the OECD countries in general. In the future, Asian hydrocarbon consuming countries as a whole - as indeed the EU and the USA - will have an interest in the stability and security of the Persian Gulf. Yet a certain degree of rivalry between them may well express itself (for example, between India and China)

  1. Produced water discharges to the Gulf of Mexico: Background information for ecological risk assessments

    Energy Technology Data Exchange (ETDEWEB)

    Meinhold, A.F.; Holtzman, S.; DePhillips, M.P.

    1996-06-01

    This report reviews ecological risk assessment concepts and methods; describes important biological resources in the Gulf of Mexico of potential concern for produced water impacts; and summarizes data available to estimate exposure and effects of produced water discharges. The emphasis is on data relating to produced water discharges in the central and western Gulf of Mexico, especially in Louisiana. Much of the summarized data and cited literature are relevant to assessments of impacts in other regions. Data describing effects on marine and estuarine fishes, mollusks, crustaceans and benthic invertebrates are emphasized. This review is part of a series of studies of the health and ecological risks from discharges of produced water to the Gulf of Mexico. These assessments will provide input to regulators in the development of guidelines and permits, and to industry in the use of appropriate discharge practices.

  2. Produced water discharges to the Gulf of Mexico: Background information for ecological risk assessments

    International Nuclear Information System (INIS)

    Meinhold, A.F.; Holtzman, S.; DePhillips, M.P.

    1996-06-01

    This report reviews ecological risk assessment concepts and methods; describes important biological resources in the Gulf of Mexico of potential concern for produced water impacts; and summarizes data available to estimate exposure and effects of produced water discharges. The emphasis is on data relating to produced water discharges in the central and western Gulf of Mexico, especially in Louisiana. Much of the summarized data and cited literature are relevant to assessments of impacts in other regions. Data describing effects on marine and estuarine fishes, mollusks, crustaceans and benthic invertebrates are emphasized. This review is part of a series of studies of the health and ecological risks from discharges of produced water to the Gulf of Mexico. These assessments will provide input to regulators in the development of guidelines and permits, and to industry in the use of appropriate discharge practices

  3. Five new species of jawfishes (Opistognathus: Opistognathidae) from the western Atlantic Ocean

    Science.gov (United States)

    Smith-Vaniz, W.F.

    1997-01-01

    Synonymies, diagnoses, descriptions, illustrations, and spot distribution maps are given for ten species of Opistognathus, including all western Atlantic species that have a cirrus on their anterior nostrils. Three deep-water species lacking nasal cirri are also treated, including O. leprocarus n. sp. (Bahamas and Lesser Antilles), O. melachasme (Yucatan), and O. nothus n. sp. (North Carolina, Gulf of Mexico and Cuba); the latter two species were originally thought to represent different sexes of the same species. The O. macrognathus species group is diagnosed primarily by having sexually dimorphic jaws and sexually dichromatic maxillary markings, and includes the eastern Pacific O. scops and the following five western Atlantic species: O. macrognathus (Florida, Gulf of Mexico, and Bahamas to northern South America), O. brasiliensis n. sp. (southern Brazil), O. cuverii (southern Brazil), O. robinsi n. sp. (South Carolina, Florida, Bahamas, and Gulf of Mexico), and O. signatus n. sp. (Nicaragua, Panama, and northern South America). Opistognathus robinsi and O. signatus are very similar morphologically and here recognized as allopatric sister-species but the possibility exists that their disjunct continental distributions may be a collecting artifact. The broadly distributed and shallow-water species Opistognathus whitehurstii and O. maxillosus are superficially similar to some members of the O. macrognathus species group, including having cirri on their anterior nostrils, but differ most obviously in having non-sexually dimorphic jaws and more numerous cephalic sensory pores. An identification key is provided for all known western Atlantic species of Opistognathus.

  4. Inter-nesting movements and habitat-use of adult female Kemp's ridley turtles in the Gulf of Mexico.

    Directory of Open Access Journals (Sweden)

    Donna J Shaver

    Full Text Available Species vulnerability is increased when individuals congregate in restricted areas for breeding; yet, breeding habitats are not well defined for many marine species. Identification and quantification of these breeding habitats are essential to effective conservation. Satellite telemetry and switching state-space modeling (SSM were used to define inter-nesting habitat of endangered Kemp's ridley turtles (Lepidochelys kempii in the Gulf of Mexico. Turtles were outfitted with satellite transmitters after nesting at Padre Island National Seashore, Texas, USA, from 1998 through 2013 (n = 60; Rancho Nuevo, Tamaulipas, Mexico, during 2010 and 2011 (n = 11; and Tecolutla, Veracruz, Mexico, during 2012 and 2013 (n = 11. These sites span the range of nearly all nesting by this species. Inter-nesting habitat lies in a narrow band of nearshore western Gulf of Mexico waters in the USA and Mexico, with mean water depth of 14 to 19 m within a mean distance to shore of 6 to 11 km as estimated by 50% kernel density estimate, α-Hull, and minimum convex polygon methodologies. Turtles tracked during the inter-nesting period moved, on average, 17.5 km/day and a mean total distance of 398 km. Mean home ranges occupied were 725 to 2948 km2. Our results indicate that these nearshore western Gulf waters represent critical inter-nesting habitat for this species, where threats such as shrimp trawling and oil and gas platforms also occur. Up to half of all adult female Kemp's ridleys occupy this habitat for weeks to months during each nesting season. Because inter-nesting habitat for this species is concentrated in nearshore waters of the western Gulf of Mexico in both Mexico and the USA, international collaboration is needed to protect this essential habitat and the turtles occurring within it.

  5. Mesozoic Continental Sediment-dispersal Systems of Mexico Linked to Development of the Gulf of Mexico

    Science.gov (United States)

    Lawton, T. F.; Molina-Garza, R. S.; Barboza-Gudiño, R.; Rogers, R. D.

    2013-05-01

    Major sediment dispersal systems on western Pangea evolved in concert with thermal uplift, rift and drift phases of the Gulf of Mexico Basin, and were influenced by development of a continental arc on Pangea's western margin. Existing literature and preliminary data from fieldwork, sandstone petrology and detrital zircon analysis reveal how major drainages in Mexico changed from Late Triassic through Late Jurassic time and offer predictions for the ultimate destinations of sand-rich detritus along the Gulf and paleo-Pacific margins. Late Triassic rivers drained away from and across the present site of the Gulf of Mexico, which was then the location of a major thermal dome, the Texas uplift of recent literature. These high-discharge rivers with relatively mature sediment composition fed a large-volume submarine fan system on the paleo-Pacific continental margin of Mexico. Predictably, detrital zircon age populations are diverse and record sources as far away as the Amazonian craton. This enormous fluvial system was cut off abruptly near the Triassic-Jurassic boundary by extensive reorganization of continental drainages. Early and Middle Jurassic drainage systems had local headwaters and deposited sediment in extensional basins associated with arc magmatism. Redbeds accumulated across northern and eastern Mexico and Chiapas in long, narrow basins whose locations and dimensions are recorded primarily by inverted antiformal massifs. The Jurassic continental successions overlie Upper Triassic strata and local subvolcanic plutons; they contain interbedded volcanic rocks and thus have been interpreted as part of the Nazas continental-margin arc. The detritus of these fluvial systems is volcanic-lithic; syndepositional grain ages are common in the detrital zircon populations, which are mixed with Oaxaquia-derived Permo-Triassic and Grenville age populations. By this time, interior Pangea no longer supplied sediment to the paleo-Pacific margin, possibly because the

  6. Modelling the temporal and spatial distribution of ecological variables in Beibu Gulf

    Science.gov (United States)

    Pan, H.; Huang, L.; Yang, S.; Shi, D.; Pan, W.

    2017-12-01

    Beibu Gulf is an important semi-enclosed gulf located in northern South China Sea. It is rich in natural resources and its coastal rim is undergoing a rapid economic growth in recent years. Study on the spatial and temporal distribution of ecological variables by the influence of physical and biological processes in Beibu Gulf can provide the theoretical basis for the utilization of resources and environmental protection. Based on the MEC three-dimensional hydrodynamic model, a nutrient-phytoplankton-zooplankton-detritus (NPZD) model was applied to simulate the distribution of ecological variables in Beibu Gulf. The result shows that the ecosystem in Beibu Gulf is significantly influenced by dynamic conditions. In autumn and winter, great amount of nutrient-rich water from western Guangdong coastal area passes through Qiongzhou Strait and flows into Beibu Gulf, with about 108.3×103 t of inorganic nitrogen and 3.7×103 t of phosphate annually, leading to phytoplankton bloom. In summer, most of the nutrients come from rivers so high concentrations of nutrients and chlorophyll-a appear on estuaries. The annual net nutrient inputs from South China Sea into Beibu Gulf are 66.6×103 t for inorganic nitrogen and 4.6×103 t for phosphate. Phytoplankton plays an important role in nutrients' refreshment: a) Absorption by the process of photosynthesis is the biggest nutrient sink. b) Cellular release from dead phytoplankton is the biggest source in inorganic budget, making up for 33.4% of nitrogen consumed by photosynthesis while the process of respiration is the biggest source in phosphate budget, making up for 32.4% of phosphorus consumed by photosynthesis. c) Mineralization from detritus is also a considerable supplement of inorganic nutrients. Overall, biological process has more influence than physical process on the nutrient cycle budget in Beibu Gulf. The comparison of the result with remote sensing and in-situ data indicates that the model is able to simulate the

  7. Gulf of Mexico Sales 139 and 141: Central and western planning areas. Final environmental impact statement. Volume 1: Sections 1 through 4.C. Final report

    International Nuclear Information System (INIS)

    1991-10-01

    The report is Volume I of two volumes. The EIS is a description of the environmental aspects and impacts of oil and gas activities resulting from these lease sales or the States bordering the Gulf of Mexico. It provides a description of the areas, the affected environment, and the environmental consequences; it describes the proposed actions, issues and areas of concern, and the major differences of holding these lease sales

  8. CHARACTERIZATION OF WESTERN NORTH ATLANTIC RIGHT WHALE SPRING FEEDING HABITAT

    Science.gov (United States)

    The Great South Channel region of the southwestern Gulf of Maine, between George's Bank and Cape Cod, is the primary spring feeding ground for the western North Atlantic population of the I northern right whale, E. glacialis .Since this whale is so endangered, it is critical to i...

  9. Prevalence of Gulf war veterans who believe they have Gulf war syndrome: questionnaire study

    Science.gov (United States)

    Chalder, T; Hotopf, M; Unwin, C; Hull, L; Ismail, K; David, A; Wessely, S

    2001-01-01

    Objectives To determine how many veterans in a random sample of British veterans who served in the Gulf war believe they have “Gulf war syndrome,” to examine factors associated with the presence of this belief, and to compare the health status of those who believe they have Gulf war syndrome with those who do not. Design Questionnaire study asking British Gulf war veterans whether they believe they have Gulf war syndrome and about symptoms, fatigue, psychological distress, post-traumatic stress, physical functioning, and their perception of health. Participants 2961 respondents to questionnaires sent out to a random sample of 4250 Gulf war veterans (69.7%). Main outcome measure The proportion of veterans who believe they have Gulf war syndrome. Results Overall, 17.3% (95% confidence interval 15.9 to 18.7) of the respondents believed they had Gulf war syndrome. The belief was associated with the veteran having poor health, not serving in the army when responding to the questionnaire, and having received a high number of vaccinations before deployment to the Gulf. The strongest association was knowing another person who also thought they had Gulf war syndrome. Conclusions Substantial numbers of British Gulf war veterans believe they have Gulf war syndrome, which is associated with psychological distress, a high number of symptoms, and some reduction in activity levels. A combination of biological, psychological, and sociological factors are associated with the belief, and these factors should be addressed in clinical practice. What is already known on this topicThe term Gulf war syndrome has been used to describe illnesses and symptoms experienced by veterans of the 1991 Gulf warConcerns exist over the validity of Gulf war syndrome as a unique entityWhat this study adds17% of Gulf war veterans believe they have Gulf war syndromeHolding the belief is associated with worse health outcomesKnowing someone else who believes they have Gulf war syndrome and receiving

  10. Continental breakup by oblique extension: the Gulf of California

    Science.gov (United States)

    van Wijk, J.; Axen, G. J.

    2017-12-01

    We address two aspects of oblique extension: 1) the evolution of pull-apart basins, and how/when they may evolve into seafloor spreading segments; and 2) the formation of microcontinents. The Gulf of California formed by oblique extension. Breakup resulted in oceanic crust generation in the southern and central parts, while in the northern Gulf/Salton Trough a thick layer of (meta-)sediments overlies thinned continental crust. We propose a simple mechanism to explain this N-S variation. We assume that oblique rifting of the proto-Gulf province resulted in pull-apart basins, and use numerical models to show that such pull-apart basins do not develop into seafloor spreading segments when their length-to-width ratios are small, as is the case in the northern Gulf. In the central and southern Gulf the length-to-width ratios were larger, promoting continent rupture. The mechanisms behind this fate of pull-apart basins will be discussed in the presentation. In the southern Gulf, potential field models show that the Tamayo Bank in the southern Gulf is likely a microcontinent, separated from the main continent by the Tamayo trough. The thickness of the ocean crust in the Tamayo trough is anomalously small, suggesting that initial seafloor spreading was magma-starved and unsuccessful, causing the location of rifting and seafloor spreading to jump. As a consequence a sliver of continent broke off, forming the microcontinent. We suggest that worldwide this may be a common process for microcontinent formation.

  11. Distribution and Dynamic Habitat Use of Young Bull Sharks Carcharhinus leucas in a Highly Stratified Northern Gulf of Mexico Estuary

    OpenAIRE

    Drymon, J. Marcus; Ajemian, Matthew J.; Powers, Sean P.

    2014-01-01

    Understanding how animals alter habitat use in response to changing abiotic conditions is important for effective conservation management. For bull sharks (Carcharhinus leucas), habitat use has been widely examined in the eastern and western Gulf of Mexico; however, knowledge of their movements and the factors influencing them is lacking for populations in the more temperate north-central Gulf of Mexico. To examine how changes in hydrographic conditions affected the presence of young bull sha...

  12. Pollutants from the Gulf War serve as water mass tracer in the Arabian Sea

    Science.gov (United States)

    Plähn, Olaf; Rhein, Monika; Fine, Rana A.; Sullivan, Kevin F.

    In 1995, concentrations of the chlorofluorocarbon compound CFC-12 in the outflow water from the Persian Gulf were 8-40 fold higher than normally caused by air-sea gas exchange. At that time, the anomaly was restricted to the Gulf of Oman north of 20°N, while in 1998 the signal had spread southwestward to 12°N. The sources of this CFC-12 input of about 6400 kg are most likely the fire extinguishers and solvents used during and after the Gulf War in 1991. This CFC-12 signal is a new feature of the Persian Gulf Water (PGW) which can be used to track and quantify the spreading and dilution of PGW in the northern Indian Ocean. The contaminated PGW spreads southward with a mean velocity of 0.02-0.025 m s-1. At 20°N, the anomaly is diluted by a factor of more than two, and east of the island Socotra by a factor of four. A mean transport of less than 0.5·106 m³ s-1 is calculated for PGW assuming a mean dilution rate of 30% from the source signal in the Gulf of Oman to the western Arabian Sea.

  13. Planning and design of the Gulf States interconnection

    International Nuclear Information System (INIS)

    Al Alawi, J.; Sud, S.; McGillis, D.

    1994-01-01

    On May 25, 1981, the six Arab state of Bahrain, Kuwait, Oman, Qatar, Saudi Arabia and the United Arab Emirates (UAE) formally ratified the charter of the organization named Co-operation Council for the Arab States of the Gulf. This has become more popularly known as the Gulf Cooperation Council (GCC). In the mid 1980s, the integration of the electric systems study in the GCC was initiated, and several possible interconnection schemes to provide for reserve sharing and generally more economic and flexible operation of the networks were proposed. The GCC subsequently asked for an update of this study and a recommended interconnection scheme. this update study was completed in 1990, and a definite scheme was proposed, which met with the approval of all GCC members. This presentation describes the proposed interconnection, the studies that led to its selection, and the associated management structure required for its implementation. the population of the GCC states, and their load, generating capacity, and the transmission systems are shown

  14. A Call for More Research from the Arabian Gulf.

    Science.gov (United States)

    AlMarri, Fatemah; Al Sabah, Salman; Al Haddad, Eliana; Vaz, Jonathan D

    2017-08-01

    Obesity has become an epidemic in the Arabian Gulf, with the prevalence of obesity according to the latest report from the World Health Organization (WHO) showing the gulf region to be countries with the highest incidence of obesity in the 30% plus group. This study aims to examine publications on bariatric surgery and compare them with the other countries with a high incidence of obesity in the world. A literature review on bariatric surgery published from the earliest detected year of publication up until March 2016 using SCOPUS, PubMed, Ovid, and Google Scholar was conducted. Individual papers were assessed for types of surgery, preoperative measures, names of journals, authors, and outcomes. The data was analyzed using Endnote library and SPSS. Key words used in the search included "Bariatric Surgery," "Arabian Gulf," "Kuwait," "Qatar," "Saudi Arabia," "United Arab Emirates," "Oman," "USA," "Australia," "weight loss surgery," "sleeve gastrectomy," "gastric bypass," "gastric band," "mini-gastric bypass," "biliropancreatic diversion," "duodenal switch," and "intragastric balloon." Original papers, systematic reviews and case reports were included. From our review, the gastric sleeve proved to be the most popular published on procedure in the Arabian Gulf, whereas the USA had the highest percentage of gastric bypass surgeries and Australia had equivalent numbers when it came to gastric bypass and band. The numbers of studies from Saudi Arabia, Kuwait, UAE, Bahrain, Qatar, and Oman were 70, 44, 20, 7, 6, and 0, respectively. The mean impact factor of the published articles was 2.53 +/- 1.76 SD. Most of the publications were published in Obesity Surgery (29%), Surgery for Obesity and Related Diseases (5%), and Surgical Endoscopy (5%). The Arabian Gulf has both the highest percentage of bariatric procedures performed as well as the highest prevalence of obesity. However, they have the lowest number of publications and research when compared to their western

  15. Inter-nesting movements and habitat-use of adult female Kemp’s ridley turtles in the Gulf of Mexico

    Science.gov (United States)

    Shaver, Donna J.; Hart, Kristen M.; Fujisaki, Ikuko; Bucklin, David N.; Iverson, Autumn; Rubio, Cynthia; Backof, Thomas F.; Burchfield, Patrick M.; Gonzales Diaz Miron, Raul de Jesus; Dutton, Peter H.; Frey, Amy; Peña, Jaime; Gamez, Daniel Gomez; Martinez, Hector J.; Ortiz, Jaime

    2017-01-01

    Species vulnerability is increased when individuals congregate in restricted areas for breeding; yet, breeding habitats are not well defined for many marine species. Identification and quantification of these breeding habitats are essential to effective conservation. Satellite telemetry and switching state-space modeling (SSM) were used to define inter-nesting habitat of endangered Kemp’s ridley turtles (Lepidochelys kempii) in the Gulf of Mexico. Turtles were outfitted with satellite transmitters after nesting at Padre Island National Seashore, Texas, USA, from 1998 through 2013 (n = 60); Rancho Nuevo, Tamaulipas, Mexico, during 2010 and 2011 (n = 11); and Tecolutla, Veracruz, Mexico, during 2012 and 2013 (n = 11). These sites span the range of nearly all nesting by this species. Inter-nesting habitat lies in a narrow band of nearshore western Gulf of Mexico waters in the USA and Mexico, with mean water depth of 14 to 19 m within a mean distance to shore of 6 to 11 km as estimated by 50% kernel density estimate, α-Hull, and minimum convex polygon methodologies. Turtles tracked during the inter-nesting period moved, on average, 17.5 km/day and a mean total distance of 398 km. Mean home ranges occupied were 725 to 2948 km2. Our results indicate that these nearshore western Gulf waters represent critical inter-nesting habitat for this species, where threats such as shrimp trawling and oil and gas platforms also occur. Up to half of all adult female Kemp’s ridleys occupy this habitat for weeks to months during each nesting season. Because inter-nesting habitat for this species is concentrated in nearshore waters of the western Gulf of Mexico in both Mexico and the USA, international collaboration is needed to protect this essential habitat and the turtles occurring within it.

  16. Duckling survival, fecundity, and habitat selection of mottled duck broods on the upper Texas Gulf Coast

    Science.gov (United States)

    Rigby, Elizabeth A.; Haukos, David A.

    2015-01-01

    Mottled ducks (Anas fulvigula) on the western Gulf Coast have exhibited a steep population decline since the mid 1990s. Low rates of breeding incidence and nest success have been implicated in this decline, but duckling survival and the habitat needs of broods have not been previously investigated in this region. We fitted mottled duck ducklings and adult females with radio transmitters and tracked broods to estimate duckling survival and brood habitat selection on the upper Texas Gulf Coast. Duckling survival to 30 days was high (range among models 0.354–0.567) compared to other dabbling duck species. Estimated fecundity was low, (range among models 0.398–0.634) however, indicating that overall reproductive output is low. Within coastal marsh, broods selected home ranges with more water cover and less upland and fresh marsh landcover than was available in the study area. Within coastal marsh home ranges, broods selected for water cover relative to other landcover types, and there was some evidence that broods avoided unvegetated landcover. Although high quality brood habitat is undeniably important, management efforts to increase mottled duck population growth on the western Gulf Coast may best be spent on increasing nesting habitat quality to increase nest success and breeding incidence.

  17. The United States and the Arab Gulf Monarchies; Les Etats-Unis et les monarchie arabes du Golfe

    Energy Technology Data Exchange (ETDEWEB)

    Kechichian, J A

    1999-07-01

    The United States has enduring strategic interests in the Persian Gulf region. To understand these interests and the Usa policy towards the Arab Gulf Monarchies, the french institute of international relations (IFRI) proposes this document. The following chapters are detailed: the United States and the Arab Gulf Monarchies, overview, Chief Unites States Objective: Access to oil, re-evaluating United States Foreign Policy in the Gulf, the second term (Usa strategy). (A.L.B.)

  18. The Red Sea and Gulf of Aden Basins

    Science.gov (United States)

    Bosworth, William; Huchon, Philippe; McClay, Ken

    2005-10-01

    We here summarize the evolution of the greater Red Sea-Gulf of Aden rift system, which includes the Gulfs of Suez and Aqaba, the Red Sea and Gulf of Aden marine basins and their continental margins, and the Afar region. Plume related basaltic trap volcanism began in Ethiopia, NE Sudan (Derudeb), and SW Yemen at ˜31 Ma, followed by rhyolitic volcanism at ˜30 Ma. Volcanism thereafter spread northward to Harrats Sirat, Hadan, Ishara-Khirsat, and Ar Rahat in western Saudi Arabia. This early magmatism occurred without significant extension, and continued to ˜25 Ma. Much of the Red Sea and Gulf of Aden region was at or near sea level at this time. Starting between ˜29.9 and 28.7 Ma, marine syn-tectonic sediments were deposited on continental crust in the central Gulf of Aden. At the same time the Horn of Africa became emergent. By ˜27.5-23.8 Ma a small rift basin was forming in the Eritrean Red Sea. At approximately the same time (˜25 Ma), extension and rifting commenced within Afar itself. At ˜24 Ma, a new phase of volcanism, principally basaltic dikes but also layered gabbro and granophyre bodies, appeared nearly synchronously throughout the entire Red Sea, from Afar and Yemen to northern Egypt. This second phase of magmatism was accompanied in the Red Sea by strong rift-normal extension and deposition of syn-tectonic sediments, mostly of marine and marginal marine affinity. Sedimentary facies were laterally heterogeneous, being comprised of inter-fingering siliciclastics, evaporite, and carbonate. Throughout the Red Sea, the principal phase of rift shoulder uplift and rapid syn-rift subsidence followed shortly thereafter at ˜20 Ma. Water depths increased dramatically and sedimentation changed to predominantly Globigerina-rich marl and deepwater limestone. Within a few million years of its initiation in the mid-Oligocene the Gulf of Aden continental rift linked the Owen fracture zone (oceanic crust) with the Afar plume. The principal driving force for extension

  19. Spatial genetic features of eastern oysters (Crassostrea virginica Gmelin) in the Gulf of Mexico: northward movement of a secondary contact zone

    OpenAIRE

    Anderson, Joel D; Karel, William J; Mace, Christopher E; Bartram, Brian L; Hare, Matthew P

    2014-01-01

    The eastern oyster (Crassostrea virginica Gmelin) is an economically and ecologically valuable marine bivalve occurring in the Gulf of Mexico. This study builds upon previous research that identified two divergent populations of eastern oysters in the western Gulf of Mexico. Allelic and genotypic patterns from 11 microsatellite markers were used to assess genetic structure and migration between the previously described oyster populations in Texas. The main findings are as follows: (1) there a...

  20. 77 FR 34405 - Environmental Documents Prepared for Oil, Gas, and Mineral Operations by the Gulf of Mexico Outer...

    Science.gov (United States)

    2012-06-11

    ... Geophysical Survey, SEA M09- Planning Area of the 013. Gulf of Mexico. Energy Resource Technology GOM, South... Oil, Gas, and Mineral Operations by the Gulf of Mexico Outer Continental Shelf (OCS) Region AGENCY... documents prepared for OCS mineral proposals by the Gulf of Mexico OCS Region SUMMARY: BOEM, in accordance...

  1. 77 FR 70994 - Proposed Information Collection; Comment Request; Gulf of Mexico Fishery Management Council...

    Science.gov (United States)

    2012-11-28

    ... Gulf of Mexico Fishery Management Council (Council) has adopted a five-year strategic communications... a new information collection). Affected Public: Individuals and households; business or other for... Public: $0 in recordkeeping/ reporting costs. IV. Request for Comments Comments are invited on: (a...

  2. Hypothermic stunning of green sea turtles in a western Gulf of Mexico foraging habitat.

    Directory of Open Access Journals (Sweden)

    Donna J Shaver

    Full Text Available Texas waters provide one of the most important developmental and foraging habitats for juvenile green turtles (Chelonia mydas in the western Gulf of Mexico, but hypothermic stunning is a significant threat and was the largest cause of green turtle strandings in Texas from 1980 through 2015; of the 8,107 green turtles found stranded, 4,529 (55.9% were victims of hypothermic stunning. Additionally, during this time, 203 hypothermic stunned green turtles were found incidentally captured due to power plant water intake entrapment. Overall, 63.9% of 4,529 hypothermic stunned turtles were found alive, and 92.0% of those survived rehabilitation and were released. Numbers of green turtles recorded as stranded and as affected by hypothermic stunning increased over time, and were most numerous from 2007 through 2015. Large hypothermic stunning events (with more than 450 turtles documented occurred during the winters of 2009-2010, 2010-2011, 2013-2014, and 2014-2015. Hypothermic stunning was documented between November and March, but peaked at various times depending on passage of severe weather systems. Hypothermic stunning occurred state-wide, but was most prevalent in South Texas, particularly the Laguna Madre. In the Laguna Madre, hypothermic stunning was associated with an abrupt drop in water temperatures strong northerly winds, and a threshold mean water temperature of 8.0°C predicted large turtle hypothermic stunning events. Knowledge of environmental parameters contributing to hypothermic stunning and the temporal and spatial distribution of turtles affected in the past, can aid with formulation of proactive, targeted search and rescue efforts that can ultimately save the lives of many affected individuals, and aid with recovery efforts for this bi-national stock. Such rescue efforts are required under the U.S. Endangered Species Act and respond to humanitarian concerns of the public.

  3. Methylmercury in the Gulf of Trieste (Northern Adriatic Sea: From Microbial Sources to Seafood Consumers

    Directory of Open Access Journals (Sweden)

    Mark E. Hines

    2014-01-01

    Full Text Available The Gulf of Trieste (northern Adriatic Sea is one of the most mercury-polluted areas in the Mediterranean and in the world due to the past mining activity in the Idrija region (western Slovenia. The link between microbial production of toxic methylmercury (MeHg, and its bioaccumulation and biomagnification in marine food webs of the gulf is at present rather poorly characterized but is critical to understanding the links between sources and higher trophic levels, such as fish, that are ultimately vectors of human and wildlife exposure. This overview explores three major topics: (i the microbial biogeochemical cycling of Hg in the area, (ii the trophic transfer and bioaccumulation of MeHg in pelagic and benthic marine food webs, and (iii human exposure to Hg through marine fish and shellfish consumption. These are important goals since the Gulf of Trieste is an area of great economical importance.

  4. Ostracod assemblages as a tool for documenting dynamics in marginal semi-closed marine environments: a case study from Late Quaternary sediments of Saronikos Gulf (Attica, central Greece)

    Science.gov (United States)

    Daioglou, Konstantinos; Tsourou, Theodora; Drinia, Hara; Antonarakou, Assimina; Anastasakis, George

    2017-04-01

    The Saronikos Gulf is a semi-enclosed embayment situated in the west-central region of the Aegean Sea in the eastern Mediterranean, and covers a total surface area of 1,117 km2. It is a neotectonic basin, divided by a very shallow north-south-oriented platform into a western and an eastern part. The western basin has depths exceeding 400 m, the eastern basin depths around 100 and 200 m. Furthermore, Elefsis Bay, situated to the north, is separated from the gulf by two shallow sills. This complex bottom morphology greatly influences the regional water circulation pattern. The Saronikos Gulf draws the attention of marine science because it constitutes the natural marine gateway of the city of Athens and the Piraeus harbor and receives the treated wastes of ˜4 million people. A sedimentary record spanning more than 16935+50 calyr BP was recovered at N 37.52'23.38" E 23.15'40", water depth 140 m, in the western basin of the gulf. A total of 50 samples from a 260 cm core were quantitatively and qualitatively analyzed for micropalaeontological study in order to reconstruct palaeoenvironmental conditions. In the framework of this study, ostracod assemblages were used to trace changes in the depositional environment of the investigated core. Two main ostracod assemblages alternate along the core, indicating a gradual transition from a shallow marine infralittoral to an outer infralittoral-inner -circalittoral environment. A mesohaline shallow marine assemblage, mainly with Leptocythere lagunae, Leptocythere rara, and Callistocythere sp., is dominant for the largest part of the core (from 260 to about 50cm). At the upper part a deeper marine assemblage prevails, mainly with Callistocythere crispata, Acanthocythereis hystrix, Pterygocythereis jonesii and Bairdia sp. The pattern of the environmental change that took place in Saronikos Gulf during Late Quaternary is comparable with the one established by Tsourou et al. (2015) for Southern Evoikos Gulf, suggesting that similar

  5. Winter variability in the western Gulf of Maine: Part 1: Internal tides

    Science.gov (United States)

    Brown, W. S.

    2011-09-01

    During the winter 1997-1998, a field program was conducted in Wilkinson Basin-western Gulf of Maine-as part of a study of winter convective mixing. The field program consisted of (1) Wilkinson basin-scale hydrographic surveys, (2) a tight three-mooring array with ˜100 m separations measured temperature and conductivity at rates of 2-15 min and (3) a single pair of upward/downward-looking pair acoustic Doppler current profiling (ADCP) instruments measured currents with 8 m vertical resolution over the 270 m water column in north-central Wilkinson basin at a rate of 10 min. The moored array measurements below the mixed layer (˜100 m depth) between 11 January and 6 February 1998 were dominated by a combination of the relatively strong semidiurnal external (depth-independent or barotropic) tide; upon which were superposed a weaker phase-locked semidiurnal internal tide and a very weak water column mean currents of about 1 cm/s southward or approximately across the local isobaths. The harmonic analysis of a vertical average of the relatively uniform ADCP velocities in the well-mixed upper 123 m of the water column, defined the external tidal currents which were dominated by a nearly rectilinear, across-isobath (326°T) M 2 semidiurnal tidal current of about 15 cm/s. The depth-dependent residual current field, which was created by subtracting the external tidal current, consisted of (1) clockwise-rotating semidiurnal internal tidal currents of about 5 cm/s below the mixed layer; (2) clockwise-rotating inertial currents; and (3) a considerably less energetic subtidal current variability. The results from both frequency-domain empirical orthogonal function and tidal harmonic analyses of the of isotherm displacement series at each of the three moorings in the 100 m array mutually confirm an approximate east-northeastward phase propagation of the dominant M 2 semidiurnal internal tide across Wilkinson Basin. Further investigation supports the idea that this winter internal

  6. Mega Scale Constructions and Art on Deep Gulf of Mexico Sonar Images Reveal Extensive Very Ancient Civilizations. Radical Holocene Climate Changes May Relate to Large Shifts in Gulf Surface Areas.

    Science.gov (United States)

    Allen, R. L.

    2017-12-01

    Enhanced images from subsea sonar scanning of the Western Gulf of Mexico have revealed quite large temples (4 km. in length), ruins of cities (14 km. by 11 km.), pyramids, amphitheaters, and many other structures. Some human faces have beards implying much earlier migrations of Europeans or North Africans. Several temples have paleo astronomy alignments and similarities to Stone Henge. Southern and Southwestern USA satellite land images display characteristics in common with several subsea designs. Water depths indicate that many structures go back about as far as the late Ice Age and are likely to be over ten thousand years old. Chronologies of civilizations, especially in North America will need to be seriously reconsidered. Greatly rising sea levels and radical climate changes must have helped to destroy relatively advanced cultures. Suprisingly deep water depths of many architectures provide evidence for closures within the Gulf of Mexico to open seas. Closures and openings may have influenced ancient radical climate swings between warmth and cooling as Gulf contributions to water temperatures contracted or expanded. These creations of very old and surprisingly advanced civilizations need protection.

  7. 2015 Gulf Guardian Awards

    Science.gov (United States)

    The Gulf of Mexico Program Partnership developed the Gulf Guardian awards as a way to recognize and honor the businesses, community groups, individuals, and agencies that are taking positive steps to keep the Gulf healthy, beautiful and productive.

  8. Benthic amphipods (Amphipoda: Gammaridea and Corophiidea) from the Mexican southeast sector of the Gulf of Mexico: checklist, new records and zoogeographic comments.

    Science.gov (United States)

    Paz-Ríos, Carlos E; Ardisson, Pedro-Luis

    2013-01-01

    The southeast region of the Gulf of Mexico is considered to be biologically important, because it is a connection and transition zone between the Caribbean and the Gulf of Mexico, harboring great marine biodiversity. Nevertheless, benthic amphipods have been poorly studied in the Mexican southeast sector of the Gulf of Mexico with few studies listing species. The aim of this study is to provide an update checklist of species for the Mexican southeast sector (based on literature review and records from the present study) as well as a brief zoogeographical analysis for the Gulf of Mexico amphipod fauna, putting them in context with the fauna on the tropical western Atlantic. Fifty-five species were listed for the Mexican southeast sector; 36 of them showed a geographical extension to the Yucatan continental shelf representing 23 new records for the Mexican southeast sector, nine for the southeast region and four for the Gulf of Mexico. Based on the zoogeographical analysis, there is support of the application of Carolinian and Caribbean zoogeographic provinces to amphipods in the Gulf of Mexico.

  9. Integrated geophysical and geological study and petroleum appraisal of Cretaceous plays in the Western Gulf of Gabes, Tunisia

    Science.gov (United States)

    Dkhaili, Noomen; Bey, Saloua; El Abed, Mahmoud; Gasmi, Mohamed; Inoubli, Mohamed Hedi

    2015-09-01

    An integrated study of available seismic and calibrated wells has been conducted in order to ascertain the structural development and petroleum potential of the Cretaceous Formations of the Western Gulf of Gabes. This study has resulted in an understanding of the controls of deep seated Tethyan tectonic lineaments by analysis of the Cretaceous deposits distribution. Three main unconformities have been identified in this area, unconformity U1 between the Jurassic and Cretaceous series, unconformity U2 separating Early from Late Cretaceous and known as the Austrian unconformity and the major unconformity U3 separating Cretaceous from Tertiary series. The seismic analysis and interpretation have confirmed the existence of several features dominated by an NE-SW extensive tectonic regime evidenced by deep listric faults, asymmetric horst and graben and tilted blocks structures. Indeed, the structural mapping of these unconformities, displays the presence of dominant NW-SE fault system (N140 to N160) bounding a large number of moderate sized basins. A strong inversion event related to the unconformity U3 can be demonstrated by the mapping of the unconformities consequence of the succession of several tectonic manifestations during the Cretaceous and post-Cretaceous periods. These tectonic events have resulted in the development of structural and stratigraphic traps further to the porosity and permeability enhancement of Cretaceous reservoirs.

  10. Satellite images survey for the identification of the coastal sedimentary system changes and associated vulnerability along the western bay of the Gulf of Tunis (northern Africa)

    Science.gov (United States)

    Hzami, Abderraouf; Amrouni, Oula; Romanescu, Gheorghe; Constantin Stoleriu, Cristian; Mihu-Pintilie, Alin; Saâdi, Abdeljaouad

    2018-04-01

    The aim of this study consists in testing the effectiveness of satellite data in order to monitoring shoreline and sedimentary features changes, especially the rapidly changing of Gulf of Tunis coast. The study area is located in the Gulf of Tunis western bay (Southern Mediterranean Sea) which is characterized by sandy beaches of Ghar Melah and Raoued (Medjerda Delta area). The aerial photographs and satellite imageries were used for mapping the evolution of shoreline. Diachronic data (satellite imagery, aerial photography and topographic maps) were used to monitor and to quantify, the evolution of the coastal areas. These thematic data were digitally overlaid and vectorised for highlighting the shoreline changes between 1936 and 2016, in order to map the rate of erosion and accretion along the shoreline. Results show that the accretion and degradation are related to the Medjerda: change of outlet in 1973 and impoundment of the Sidi Salem dam in 1982. We found that the general trend of the coastal geomorphic processes can be monitored with satellite imageries (such as Sentinel A2, Spots 4 and 5), due to its repetitive coverage along the time and their high quality concerning the spectral contrast between land and sea areas. Improved satellite imageries with high resolution should be a valuable tool for complementing traditional methods for mapping and assessing the sedimentary structures (such as shoreline, delta, marine bars), and monitoring especially the lowlands coastal areas (slightly eroded).

  11. Pb-210 and Pu-239,240 in nearshore Gulf of Mexico sediments

    International Nuclear Information System (INIS)

    Rotter, R.J.

    1985-05-01

    Pb-210, Ra-226, and Pu-239,240 activities were measured in nearshore Gulf of Mexico sediments. Sediment cores were collected from the Mississippi delta, and the western Gulf of Mexico shelf. Mississippi delta cores which exhibit significantly higher sedimentation rates show larger inventories of Pb-210. The measured Pu levels from the western shelf are lower than from the delta at comparable depths. In three of the western shelf cores, the observed Pu inventory is considerably less than predicted from atmospheric flux. Therefore, Pu is not being removed to the sediment, or is being released following deposition. A key difference between these isotopes is that Pu exists in a less particle-reactive state. The ratio of excess Pb-210 to Pu levels increases with water depth in the delta and the western shelf. Water depth acts as an integrator of depth-sensitive processes. Pu scavenging is more sensitive to these processes. A sub-surface Pu maximum has been observed. Excess Pb-210 and Pu levels correlate well with sedimentation rates. This suggests that particle flux is important in removal of Pb-210 and Pu to the sediment. The flux of Mn out of the sediment is correlated with inventory data, suggesting that redox cycling of Mn may play a role in increasing Pb-210 and Pu sediment inventories. It is unclear whether the effects of increased sedimentation rates and increased Mn fluxes can be evaluated independently. Mixing of surface sediment correlates with inventory data. Increased sediment mixing allows for additional scavenging of Pb-210 and Pu from overlying waters. Mixing of sediment at depths below the mixed surface layer may play a role in increasing sediment inventories of Pb-210 and Pu

  12. Cumulative impacts from multiple human activities on seagrass meadows in eastern Mediterranean waters: the case of Saronikos Gulf (Aegean Sea, Greece).

    Science.gov (United States)

    Brodersen, Maren Myrto; Pantazi, Maria; Kokkali, Athina; Panayotidis, Panayotis; Gerakaris, Vasilis; Maina, Irida; Kavadas, Stefanos; Kaberi, Helen; Vassilopoulou, Vassiliki

    2017-12-05

    Ecosystem-based management (EBM) addresses the fundamental need to account for cumulative impacts of human activities with the aim of sustainably delivering ecosystem services. The Saronikos Gulf, a large embayment of the Aegean Sea, provides a wide range of ecosystem services that are impacted by multiple human activities, deriving from the metropolitan area of Athens (situated at the northeast part of the Gulf). The anthropogenic impacts affect the status of several marine ecosystem components, e.g., seagrass meadows. Cymodocea nodosa meadows are only present at the most confined western part of the Gulf, whereas Posidonia oceanica meadows are mainly distributed in the inner and outer part of the Gulf. The aim of this study is to assess the cumulative impacts from multiple human activities on the seagrass meadows in the Gulf. The main results indicated that most impacted meadows are P. oceanica in the inner part of the Gulf, adjacent to the most urbanized coastal areas, and near port infrastructures. Land-based pollution, as well as physical damage and loss seem to be the main pressures exerted on the meadows. Understanding cumulative impacts is crucial for informing policy decisions under an EBM approach.

  13. Hurricane shuts down gulf activity

    International Nuclear Information System (INIS)

    Koen, A.D.

    1992-01-01

    This paper reports that producers in the Gulf of Mexico and plant operators in South Louisiana last week were checking for damage wrought by Hurricane Andrew. In its wake Andrew left evacuated rigs and platforms in the gulf and shuttered plants across a wide swath of the Gulf Coast. Operations were beginning to return to normal late last week. Not all gulf operators, especially in the central gulf, expected to return to offshore facilities. And even producers able to book helicopters did not expect to be able to fully assess damage to all offshore installations before the weekend. MMS officials in Washington estimated that 37,500 offshore workers were evacuated from 700 oil and gas installations on the gulf's Outer Continental Shelf. Gulf oil and gas wells account for about 800,000 b/d of oil and one fourth of total U.S. gas production. MMS was awaiting an assessment of hurricane damage before estimating how soon and how much gulf oil and gas production would be restored

  14. Relict sand waves in the continental shelf of the Gulf of Valencia (Western Mediterranean)

    Science.gov (United States)

    Albarracín, Silvia; Alcántara-Carrió, Javier; Montoya-Montes, Isabel; Fontán-Bouzas, Ángela; Somoza, Luis; Amos, Carl L.; Salgado, Jorge Rey

    2014-10-01

    The presence of fossil or relict bedforms is common in the Quaternary fill of modern continental shelf due to sea level oscillations, tectonic subsidence and migration of associated sedimentary facies. The continental margin of the Gulf of Valencia has been strongly influenced by glacio-eustasy and neotectonics. High-resolution multibeam bathymetry data, seismic reflection profiles and box core samples were collected across the continental shelf of the Gulf of Valencia during the DERIVA cruises carried out in 2010 and 2011. The integrated analysis of this data set and high-resolution mapping of the relict bedforms on the Valencian continental shelf, ranging between 50 and 90 m allowed the study of previously identified system of sand waves located in front of the present-day Albufera de Valencia lagoon. The system is composed of 27 ridges with a NNE-SSW orientation, i.e. oblique to the present shoreline, in which the lateral horns point backwards. These sand waves can reach 10 m in height and 3 km in length resulting in a maximum slope of 6°. According to seismic stratigraphic and relative sea level curve reconstructions, these sand waves were formed during the Younger Dryas (~ 12-10 ky BP). Consequently, they have been classified as Holocene sand waves associated with coastal sedimentary evolution.

  15. 76 FR 54375 - Safety Zone; Thunder on the Gulf, Gulf of Mexico, Orange Beach, AL

    Science.gov (United States)

    2011-09-01

    ...-AA00 Safety Zone; Thunder on the Gulf, Gulf of Mexico, Orange Beach, AL AGENCY: Coast Guard, DHS... portion of the Gulf of Mexico for the waters off Orange Beach, Alabama. This action is necessary for the... conduct a high speed boat race on the Gulf of Mexico, south of Orange Beach, Alabama to occur from October...

  16. Mesoscale eddies in the Gulf of Aden and their impact on the spreading of Red Sea Outflow Water

    Science.gov (United States)

    Bower, Amy S.; Furey, Heather H.

    2012-04-01

    The Gulf of Aden (GOA) in the northwestern Indian Ocean is the receiving basin for Red Sea Outflow Water (RSOW), one of the World’s few high-salinity dense overflows, but relatively little is known about spreading pathways and transformation of RSOW through the gulf. Here we combine historical data, satellite altimetry, new synoptic hydrographic surveys and the first in situ direct observations of subsurface currents in the GOA to identify the most important processes in the spreading of RSOW. The new in situ data sets were collected in 2001-2003 as part of the Red Sea Outflow Experiment (REDSOX) and consist of two CTD/LADCP Surveys and 49 one-year trajectories from acoustically tracked floats released at the depth of RSOW. The results indicate that the prominent positive and negative sea level anomalies frequently observed in the GOA with satellite altimetry are associated with anticyclonic and cyclonic eddies that often reach to at least 1000 m depth, i.e., through the depth range of equilibrated RSOW. The eddies dominate RSOW spreading pathways and help to rapidly mix the outflow water with the background. Eddies in the central and eastern gulf are basin-scale (∼250-km diameter) and have maximum azimuthal speeds of about 30 cm/s at the RSOW level. In the western gulf, smaller eddies not detectable with satellite altimetry appear to form as the larger westward-propagating eddies impale themselves on the high ridges flanking the Tadjura Rift. Both the hydrographic and Lagrangian observations show that eddies originating outside the gulf often transport a core of much cooler, fresher water from the Arabian Sea all the way to the western end of the GOA, where the highest-salinity outflow water is found. This generates large vertical and horizontal gradients of temperature and salinity, setting up favorable conditions for salt fingering and diffusive convection. Both of these mixing processes were observed to be active in the gulf. Two new annually appearing

  17. No evidence for altered cellular immune functions in personnel deployed in the Persian Gulf during and after the Gulf War--The Danish Gulf War study

    DEFF Research Database (Denmark)

    Bregenholt, S; Ishøy, T; Skovgaard, L T

    2001-01-01

    Veterans who have participated in the Gulf War suffer from a number of symptoms, collectively referred to as the Gulf War Syndrome. It has been hypothesized that a change in the systemic cytokine balance or other changes in immunological parameters could be responsible for some of the symptoms. We...... analyzed the peripheral blood natural killer (NK) cell activity of 686 Gulf War personnel who had been present in the Persian Gulf area during and immediately after the Gulf War as well as 231 gender and age-matched controls. The test material included individual samples of frozen peripheral blood...

  18. 2015 Gulf Guardian Award Winners

    Science.gov (United States)

    The Gulf of Mexico Program Partnership developed the Gulf Guardian awards as a way to recognize and honor the businesses, community groups, individuals, and agencies that are taking positive steps to keep the Gulf healthy, beautiful and productive.

  19. 2017 Gulf Guardian Award Winners

    Science.gov (United States)

    The Gulf of Mexico Program Partnership developed the Gulf Guardian awards as a way to recognize and honor the businesses, community groups, individuals, and agencies that are taking positive steps to keep the Gulf healthy, beautiful and productive.

  20. The geochemical record of the last 17,000 years in the Guaymas Basin, Gulf of California

    Science.gov (United States)

    Dean, W.E.

    2006-01-01

    Sediments deposited on the western slope of the Guaymas Basin in the central Gulf of California are composed predominantly of detrital clastic material and biogenic silica (biopal), with minor organic material (average of 2.8% organic carbon) and calcium carbonate. The CaCO3 is derived from calcareous plankton and is highly variable ranging from 0% to 16%. In general, the CaCO3 content of the sediments varies inversely with the biopal content, reflecting the relative abundance of calcareous and siliceous plankton in the photic zone. Siliceous plankton dominate when winds are predominantly out of the northwest producing strong upwelling. Calcareous plankton indicates weak southeasterly winds that bring warm, tropical Pacific surface water into the Gulf. Based mainly on relative abundances of biopal and CaCO3, the sediments deposited over the last 17,000 years in the western Guaymas Basin can be divided into five intervals. In general, the sediments in the intervals with high biopal and low CaCO3 are laminated, but this is not always true. Unlike most other continental margins of the world with well-developed oxygen minimum zones where highest concentrations of organic carbon and redox-sensitive trace metals occur in laminated sediments, the laminated sediments on the anoxic slope of the western Guaymas Basin do not always have the highest concentrations of organic carbon and trace metals such as Mo and Cd.

  1. Savannah River Region: Transition between the Gulf and Atlantic Coastal Plains. Proceedings

    Energy Technology Data Exchange (ETDEWEB)

    Zullo, V.A.; Harris, W.B.; Price, V. [eds.

    1990-12-31

    The focus of the this conference of Coastal Plains geologists was on the Savannah River region of Georgia and South Carolina, and particularly on the geology of the US Department of Energy`s 300 square mile Savannah River Site (SRS) in western South Carolina. Current geological studies indicate that the Mesozoic-Cenozoic section in the Savannah River region is transitional between that of the Gulf Coastal Plain to the southwest and that of the Atlantic Coastal Plain to the northeast. With the transitional aspect of the region as its theme, the first session was devoted to overviews of Cretaceous and Paleogene geology in the Gulf and Atlantic Coastal Plains. Succeeding presentations and resulting discussions dealt with more specific problems in structural, lithostratigraphic, hydrological, biostratigraphic, and cyclostratigraphic analysis, and of correlation to standard stratigraphic frameworks. For these conference proceedings, individual papers have been processed separately for the Energy Data Base.

  2. Seasonal and Interannual Variability of Eddy Field and Surface Circulation in the Gulf of Aden

    Science.gov (United States)

    Al Saafani, M. A.; Shenoi, S. S. C.

    2006-07-01

    The circulation in the Gulf of Aden is inferred from three different data sets: h istorical sh ip drifts , hydrography , and satellite altimeter derived sea level (Topex/Poseidon, Jason and ERS) . The circulation in th is semi-enclosed basin is marked with strong seasonality with reversals in the direction of flows twice a year follow ing the reversal in mon soonal winds. During the win ter mon soon (November - February) there is an inflow from Arabian Sea; an extension of Arabian Coastal Current (ACC) . During sou thwest mon soon (June - August) the flow is generally towards east especially along the northern coast of Gulf of Aden. The geostrophic currents also show that the circulation in the gulf is embedded with mesoscale eddies. These westward propagating eddies appear to enter the Gulf of Aden from the western Arabian Sea in win ter. The relative contribu tion of mesoscale eddies to the circulation in the gulf were estimated using altimeter derived Sea level anomaly (SLA) for the years 1993 to 2003 . The effect of these mesoscale eddies extend over the entire water colu mn . The propagation speeds, of these eddies, estimated using weekly spaced altimeter derived SLA (2002 - 2003) is ~ 4 .0 - 5 .3 cm s . The sum of the speeds of second mode Ro ssby wave and the mean current (4.8 cm s ) matches with the propagation speeds of eddies estimated using SLA . Hence, second mode baroclin ic Rossby waves appear to be responsib le for the westward propagation of eddies in the Gulf of Aden. The presence of these eddies in the temperaturesalin ity climato logy confirms that they are no t transient features.

  3. 78 FR 14983 - Fisheries of the Gulf of Mexico; Gulf of Mexico Fishery Management Council; Public Meeting

    Science.gov (United States)

    2013-03-08

    ... the Gulf of Mexico; Gulf of Mexico Fishery Management Council; Public Meeting AGENCY: National Marine... of Gulf of Mexico Fishery Management Council Spanish Mackerel and Cobia Stock Assessment Review Workshop. SUMMARY: Independent peer review of Gulf of Mexico Spanish Mackerel and Cobia stocks will be...

  4. Two-Dimensional Model Test Study of New Western Breakwater Proposal for Port of Hanstholm

    OpenAIRE

    Eldrup, Mads Røge; Andersen, Thomas Lykke

    2016-01-01

    The present report presents results from a two-dimensional model test study carried out at Aalborg University in December 2016 with the proposed trunk section for the new western breakwater in Port of Hanstholm. The objectives of the model tests were to study the stability of the armour layer, toe erosion, overtopping and transmission. The scale used for the model tests was 1:61.5. Unless otherwise specified all values given in this report are prototype values converted from the model to prot...

  5. 77 FR 56168 - Reef Fish Fishery of the Gulf of Mexico; Gulf of Mexico Individual Fishing Quota Programs

    Science.gov (United States)

    2012-09-12

    .... 090206140-91081-03] RIN 0648-XC227 Reef Fish Fishery of the Gulf of Mexico; Gulf of Mexico Individual... red snapper and grouper/tilefish components of the reef fish fishery in the Gulf of Mexico (Gulf), the... INFORMATION: The reef fish fishery of the Gulf of Mexico is managed under the Fishery Management Plan for Reef...

  6. Geometrical effects on western intensification of wind-driven ocean currents: The rotated-channel Stommel model, coastal orientation, and curvature

    Science.gov (United States)

    Boyd, John P.; Sanjaya, Edwin

    2014-03-01

    We revisit early models of steady western boundary currents [Gulf Stream, Kuroshio, etc.] to explore the role of irregular coastlines on jets, both to advance the research frontier and to illuminate for education. In the framework of a steady-state, quasigeostrophic model with viscosity, bottom friction and nonlinearity, we prove that rotating a straight coastline, initially parallel to the meridians, significantly thickens the western boundary layer. We analyze an infinitely long, straight channel with arbitrary orientation and bottom friction using an exact solution and singular perturbation theory, and show that the model, though simpler than Stommel's, nevertheless captures both the western boundary jet (“Gulf Stream”) and the “orientation effect”. In the rest of the article, we restrict attention to the Stommel flow (that is, linear and inviscid except for bottom friction) and apply matched asymptotic expansions, radial basis function, Fourier-Chebyshev and Chebyshev-Chebyshev pseudospectral methods to explore the effects of coastal geometry in a variety of non-rectangular domains bounded by a circle, parabolas and squircles. Although our oceans are unabashedly idealized, the narrow spikes, broad jets and stationary points vividly illustrate the power and complexity of coastal control of western boundary layers.

  7. Proposed framework for the Western Area Power Administration Environmental Risk Management Program

    Energy Technology Data Exchange (ETDEWEB)

    Glantz, C.S.; DiMassa, F.V.; Pelto, P.J.; Brothers, A.J. [Pacific Northwest Lab., Richland, WA (United States); Roybal, A.L. [Western Area Power Administration, Golden, CO (United States)

    1994-12-01

    The Western Area Power Administration (Western) views environmental protection and compliance as a top priority as it manages the construction, operation, and maintenance of its vast network of transmission lines, substations, and other facilities. A recent Department of Energy audit of Western`s environmental management activities recommends that Western adopt a formal environmental risk program. To accomplish this goal, Western, in conjunction with Pacific Northwest Laboratory, is in the process of developing a centrally coordinated environmental risk program. This report presents the results of this design effort, and indicates the direction in which Western`s environmental risk program is heading. Western`s environmental risk program will consist of three main components: risk communication, risk assessment, and risk management/decision making. Risk communication is defined as an exchange of information on the potential for threats to human health, public safety, or the environment. This information exchange provides a mechanism for public involvement, and also for the participation in the risk assessment and management process by diverse groups or offices within Western. The objective of risk assessment is to evaluate and rank the relative magnitude of risks associated with specific environmental issues that are facing Western. The evaluation and ranking is based on the best available scientific information and judgment and serves as input to the risk management process. Risk management takes risk information and combines it with relevant non-risk factors (e.g., legal mandates, public opinion, costs) to generate risk management options. A risk management tool, such as decision analysis, can be used to help make risk management choices.

  8. S.83: A Bill to ensure the preservation of the Gulf of Mexico by establishing within the Environmental Protection Agency a Gulf of Mexico Program. Introduced in the Senate of the United States, One Hundred Third Congress, First Session, January 21, 1993

    International Nuclear Information System (INIS)

    Anon.

    1993-01-01

    S. 83 may be cited as the open-quotes Gulf of Mexico Preservation Act of 1993.close quotes This Bill discusses findings pertaining to resources in the Gulf of Mexico, describes the establishment of the Gulf of Mexico Program, defines the establishment and duties of the Gulf of Mexico Program Office, and proposes a study of international issues. This Bill also includes an assessment to be prepared by the Administrator, a monitoring, management, protection and restoration plan, a grant program, authorization of appropriations, administrative provisions, and the relationship of the Bill to existing federal and state laws and international treaties

  9. The Cenomanian-Turonian Oceanic Anoxic Event 2 (OAE2) in the Western Interior US and Gulf of Mexico: Decoupled Black Shale Deposition and Carbon Isotope Excursion

    Science.gov (United States)

    Lowery, C.; Snedden, J.; Cunningham, R.; Barrie, C.; Leckie, R. M.

    2016-12-01

    The largest carbon isotope excursions (CIEs) of the Cretaceous are associated with widespread evidence for marine anoxia and have been termed Oceanic Anoxic Events (OAEs). OAEs were originally thought to be globally-correlative intervals of black shales, but black shale deposition is an inherently provincial phenomenon driven by local conditions, and black shales associated with individual OAEs are often slightly diachronous and can be absent in some regions. Workers currently favor a definition of OAEs that is focused on the positive carbon isotope excursion driven by the global burial of organic matter and resulting carbon cycle perturbation; i.e., recording the global, rather than local, changes. While this is certainly the best way to define a global event, differences in the expression of the event between regions can be used to study the nature of the event itself. The greater Gulf of Mexico region in southern North America offers an excellent example of the diachroneity of black shale deposition and anoxia during one of the largest OAEs, the Cenomanian-Turonian OAE2. The Western Interior Seaway (WIS), flooded the interior of North America from the Gulf of Mexico up through the Canadian Arctic. In Texas and elsewhere across the WIS, high marine organic matter deposition and proxies for anoxia (especially benthic foraminifera and redox sensitive trace metals) are common before the event, but decrease at its onset, and in some places increase again after the event. Further south, across the Mexican shelf, deeper shelf environments remain dysoxic/anoxic through the event, while several carbonate platforms remain oxygenated during the event, but drown and record anoxic bottom waters shortly afterward. Here, we present new bulk carbonate and organic carbon isotopes and planktic and benthic foraminiferal populations from a 90 m core in southern Mississippi, USA, to present the first record of OAE2 from the northern Gulf of Mexico. In particular, we use

  10. Spatial Dynamics of Sea Turtle Abundance and Shrimping Intensity in the U.S. Gulf of Mexico

    Directory of Open Access Journals (Sweden)

    Carrie J. McDaniel

    2000-07-01

    Full Text Available In order to examine the scientific feasibility of area closures for sea turtle protection, we determined the spatial dynamics of sea turtles for the U.S. Gulf of Mexico by analyzing National Marine Fisheries Service (NMFS aerial survey data in September, October, and November of 1992, 1993, and 1994. Turtle sightings were grouped into depth zones and NMFS fishery statistical zones, and strip transect methods were used to estimate the relative abundance of sea turtles in each subzone. Average shrimping intensity was calculated for each subzone for all months of 1992, 1993, and 1994, as well as for the months and locations of the aerial survey. The spatial overlap of sea turtle abundance and shrimping intensity suggested regions where interactions are likely to occur. Sea turtles were observed at much higher rates along the coast of Florida than in the Western Gulf; the highest density of sea turtles was observed in the Florida Keys region (0.525 turtles/km2. Shrimping intensity was highest in the Western Gulf along the coast of Texas and Louisiana, for both annual and fall estimates. Among alternative management scenarios, area closures in conjunction with continued Turtle Excluder Device (TED requirements would probably best prevent sea turtles from future extinction. By implementing shrimping closures off of South Padre Island, Texas, a potential second nesting population of Kemp's ridleys (Lepidochelys kempi could be protected. Closing waters where shrimping intensity is low and sea turtle abundance is high (e.g., South Florida waters would protect sea turtles without economically impacting a large number of shrimpers.

  11. From Ecosystem-Scale to Litter Biochemistry: Controls on Carbon Sequestration in Coastal Wetlands of the Western Gulf of Mexico

    Science.gov (United States)

    Louchouarn, P.; Kaiser, K.; Norwood, M. J.; Sterne, A. M. E.; Armitage, A. R.; HighField, W.; Brody, S.

    2015-12-01

    Landscape-level shifts in plant species distribution and abundance can fundamentally change the structure and services of an ecosystem. Such shifts are occurring within mangrove-marsh ecotones of the U.S., where over the last few decades, relatively mild winters have led to mangrove expansion into areas previously occupied by salt marsh plants. Here we present the synthesis of 3 years of multidisciplinary work to quantify ecosystem shifts at the regional scale, along the entire Texas (USA) coast of the western Gulf of Mexico, and transcribe these shifts into carbon (C) sequestration mass balances. We classified Landsat-5 Thematic Mapper images using artificial neural networks to quantify shifts in areal coverage of black mangrove (Avicennia germinans) and salt marsh (Spartina alterniflora and other grass and forb species) over 20 years across the Texas Gulf coast. Between 1990 and 2010, mangrove area expanded by 74% (+16 km2). Concurrently, salt marsh area experienced a net loss of 24% (-78 km2). Most of that loss was due to conversion to tidal flats or water, likely a result of relative sea level rise, with only 6% attributable to mangrove expansion. Although relative carbon load (per surface area) are statistically larger for mangrove wetlands, total C loads are larger for salt marsh wetlands due to their greater aerial coverage. The entire loss of above ground C (~7.0·109 g), was offset by salt marsh expansion (2.0·109 g) and mangrove expansion (5.6·109 g) over the study period. Concurrently, the net loss in salt marsh coverage led to a loss in below ground C accumulation capacity of 2.0·109 g/yr, whereas the net expansion of mangrove wetlands led to an added below ground C accumulation capacity of 0.4·109 g/yr. Biomarker data show that neutral carbohydrates and lignin contributed 30-70% and 10-40% of total C, respectively, in plant litter and surface sediments. Sharp declines of carbohydrate yields with depth occur parallel to increases in lignin

  12. 76 FR 64248 - Gulf of Mexico Reef Fish Fishery; Closure of the 2011 Gulf of Mexico Commercial Sector for...

    Science.gov (United States)

    2011-10-18

    .... 040205043-4043-01] RIN 0648-XA766 Gulf of Mexico Reef Fish Fishery; Closure of the 2011 Gulf of Mexico... the commercial sector for greater amberjack in the exclusive economic zone (EEZ) of the Gulf of Mexico... Reef Fish Resources of the Gulf of Mexico (FMP). The FMP was prepared by the Gulf of Mexico Fishery...

  13. 75 FR 70365 - Agency Information Collection (Follow-Up Study of a National Cohort of Gulf War and Gulf Era...

    Science.gov (United States)

    2010-11-17

    ... (Follow-Up Study of a National Cohort of Gulf War and Gulf Era Veterans) Activity Under OMB Review AGENCY...).'' SUPPLEMENTARY INFORMATION: Titles: Follow-Up Study of a National Cohort of Gulf War and Gulf Era Veterans, VA..., will help VA to assess the health of Gulf War veterans who were exposed to a variety of environmental...

  14. Gulf Canada Resources Ltd. annual report, 1992

    International Nuclear Information System (INIS)

    1993-01-01

    Gulf Canada Resources Limited is a major explorer and producer of oil and natural gas. Important areas of activity are Western Canada, the Beaufort Sea, the Newfoundland offshore, and Indonesia and Russia. The company also operates gas processing plants and pipelines, and participates in oil sands projects in Alberta and a coal mine in British Columbia. This report reviews the company's activities over the year, providing descriptions of Canadian and international operations along with financial statements and associated information. Some highlights included an increase in liquids production from 92,600 bbl/d in 1991 to 96,800 bbl/d in 1992, a drop in natural gas production from 338 to 319 million cubic feet/day, and cancellation of the commitment to the Hibernia project

  15. Fine-Scale Biogeographical Boundary Delineation and Sub-population Resolution in the Symbiodinium thermophilum Coral Symbiont Group From the Persian/Arabian Gulf and Gulf of Oman

    KAUST Repository

    Hume, Benjamin C. C.

    2018-04-24

    The adaptation of tropical coral communities to the world\\'s hottest sea, the Persian/Arabian Gulf (PAG), has recently been associated with ecological selection acting on a group of coral-associated algal symbionts, the Symbiodinium thermophilum group. Previous studies have shown that considerable genetic diversity exists within the group and that group members found within the PAG are significantly differentiated from those found externally, in the Gulf of Oman and wider waters. However, little is known about this genetic diversity. As an initial step towards understanding whether this diversity could represent niche adapted, selectable populations within the S. thermophilum group that may act as natural sources of stress tolerant associations to Indo-Pacific reefs, we investigate whether the diversity is structured between populations and where the location of the internal-external genetic partition lies. We use regions of the nuclear ribosomal DNA (ITS1-5.8S-ITS2) and chloroplastic psbA gene (non-coding region) from >100 S. thermophilum group-harbouring Porites spp. (P. lobata, P. lutea, and P. harrisoni) sampled across steep temperature and salinity gradients to conduct analyses of variance and create maximum parsimony networks to assess genetic structure and (dis)similarity within and between populations of S. thermophilum found within the PAG and externally in the Gulf of Oman. Our analyses resolve a sharp genetic boundary between Symbiodinium populations in the western Strait of Hormuz and identify significant genetic structure between populations with as little as 20 km between them demonstrating that differentiation between populations is likely due to factors other than limited connectivity. Further, we hypothesize that genotypes identified outside of the PAG in the Gulf of Oman existing in near-oceanic salinities, yet thermally challenging waters, putatively represent candidates for stress-tolerant symbionts that could act as natural seed populations of

  16. Two-Dimensional Model Test Study of New Western Breakwater Proposal for Port of Hanstholm

    DEFF Research Database (Denmark)

    Eldrup, Mads Røge; Andersen, Thomas Lykke

    The present report presents results from a two-dimensional model test study carried out at Aalborg University in December 2016 with the proposed trunk section for the new western breakwater in Port of Hanstholm. The objectives of the model tests were to study the stability of the armour layer, toe...... erosion, overtopping and transmission. The scale used for the model tests was 1:61.5. Unless otherwise specified all values given in this report are prototype values converted from the model to prototype according to the Froude model law....

  17. Opening of the Gulf of Guayaquil: quantifying the motion from the trench to the Andean Cordillera

    Science.gov (United States)

    Santana, E.; Dumont, J. F.; Vilema, W.; Pedoja, K.

    2003-04-01

    The Gulf of Guayaquil is a complex pull-apart opened at the south tip of the North Andean Block. The Guayaquil-Caracas Megashear (i.e. Dolores-Guayaquil Megashear) which bounds the North Andean Block to the east crosses the Western Andean Cordillera along the Pallatanga fault, and joins southwestward the Ecuadorian trench. According to paleogeographic data the Gulf of Guayaquil began to open about 9 Ma ago, which is evidenced now by about 100 km offset of the Early Neogene Progresso and Loja basins. A lesser post orogenic offset of about 60 km is observed along the Pallatanga fault, coherent with the offset of the piedmont of the Western Andean Cordillera. The discrepancy suggests a partition of the deformation at the south tip of the North Andean Block, part of the motion being accommodated by other small faults north of the Pallatanga fault zone and resulting in a pull apart motion and subsidence of the Daule-Babahoyo basin. The main curve of the Tallara Arc described by the trend of the trench from north Peru to north Ecuador shows a significant anomaly in front of the Gulf of Guayaquil. A 60 to 70 km minimum right hand deviation of the curve is observed, displayed in three segments delimited by faults. Neotectonic studies in the Santa Clara and Puná Islands located in the Gulf of Guayaquil show a regional E-W shortening during the Pleistocene, characterised by right lateral motion along the Zambapala Cordillera in Puná. Offset of river drainage and morphostructures in South Puná gives evidence of 3 km dextral offset which post-date marine terraces with an estimated age of M.I.S. 9 or 11, giving mean offset rates of 9 mm/y or 6.8 mm/y respectively. The conclusion underlines the following points: (1) These data suggest that the offset rate inside the Gulf of Guayaquil during the Late Quaternary is lower than the mean rate observed since 9 Ma. The apparent slow down may be due to the partition of the deformation of the Gulf of Guayaquil towards the Guayas

  18. Whales, Dolphins, and Porpoises of the Western North Atlantic: A Guide to Their Identification.

    Science.gov (United States)

    Leatherwood, Stephen; And Others

    This field guide is designed to permit observers to identify the cetaceans (whales, dolphins, and porpoises) they see in western North Atlantic, including the Caribbean Sea, the Gulf of Mexico, and the coastal waters of the United States and Canada. The animals described are not grouped by scientific relationships but by similarities in appearance…

  19. Climate change impacts on marine biodiversity, fisheries and society in the Arabian Gulf.

    Directory of Open Access Journals (Sweden)

    Colette C C Wabnitz

    Full Text Available Climate change-reflected in significant environmental changes such as warming, sea level rise, shifts in salinity, oxygen and other ocean conditions-is expected to impact marine organisms and associated fisheries. This study provides an assessment of the potential impacts on, and the vulnerability of, marine biodiversity and fisheries catches in the Arabian Gulf under climate change. To this end, using three separate niche modelling approaches under a 'business-as-usual' climate change scenario, we projected the future habitat suitability of the Arabian Gulf (also known as the Persian Gulf for 55 expert-identified priority species, including charismatic and non-fish species. Second, we conducted a vulnerability assessment of national economies to climate change impacts on fisheries. The modelling outputs suggested a high rate of local extinction (up to 35% of initial species richness by 2090 relative to 2010. Spatially, projected local extinctions are highest in the southwestern part of the Gulf, off the coast of Saudi Arabia, Qatar and the United Arab Emirates (UAE. While the projected patterns provided useful indicators of potential climate change impacts on the region's diversity, the magnitude of changes in habitat suitability are more uncertain. Fisheries-specific results suggested reduced future catch potential for several countries on the western side of the Gulf, with projections differing only slightly among models. Qatar and the UAE were particularly affected, with more than a 26% drop in future fish catch potential. Integrating changes in catch potential with socio-economic indicators suggested the fisheries of Bahrain and Iran may be most vulnerable to climate change. We discuss limitations of the indicators and the methods used, as well as the implications of our overall findings for conservation and fisheries management policies in the region.

  20. Climate change impacts on marine biodiversity, fisheries and society in the Arabian Gulf

    Science.gov (United States)

    Lam, Vicky W. Y.; Reygondeau, Gabriel; Teh, Lydia C. L.; Al-Abdulrazzak, Dalal; Khalfallah, Myriam; Pauly, Daniel; Palomares, Maria L. Deng; Zeller, Dirk; Cheung, William W. L.

    2018-01-01

    Climate change–reflected in significant environmental changes such as warming, sea level rise, shifts in salinity, oxygen and other ocean conditions–is expected to impact marine organisms and associated fisheries. This study provides an assessment of the potential impacts on, and the vulnerability of, marine biodiversity and fisheries catches in the Arabian Gulf under climate change. To this end, using three separate niche modelling approaches under a ‘business-as-usual’ climate change scenario, we projected the future habitat suitability of the Arabian Gulf (also known as the Persian Gulf) for 55 expert-identified priority species, including charismatic and non-fish species. Second, we conducted a vulnerability assessment of national economies to climate change impacts on fisheries. The modelling outputs suggested a high rate of local extinction (up to 35% of initial species richness) by 2090 relative to 2010. Spatially, projected local extinctions are highest in the southwestern part of the Gulf, off the coast of Saudi Arabia, Qatar and the United Arab Emirates (UAE). While the projected patterns provided useful indicators of potential climate change impacts on the region’s diversity, the magnitude of changes in habitat suitability are more uncertain. Fisheries-specific results suggested reduced future catch potential for several countries on the western side of the Gulf, with projections differing only slightly among models. Qatar and the UAE were particularly affected, with more than a 26% drop in future fish catch potential. Integrating changes in catch potential with socio-economic indicators suggested the fisheries of Bahrain and Iran may be most vulnerable to climate change. We discuss limitations of the indicators and the methods used, as well as the implications of our overall findings for conservation and fisheries management policies in the region. PMID:29718919

  1. Classification of Nortes in the Gulf of Mexico derived from wave energy maps

    Science.gov (United States)

    Appendini, C. M.; Hernández-Lasheras, J.

    2016-02-01

    Extreme wave climate in the Gulf of Mexico is determined by tropical cyclones and winds from the Central American Cold Surges, locally referred to as Nortes. While hurricanes can have catastrophic effects, extreme waves and storm surge from Nortes occur several times a year, and thus have greater impacts on human activities along the Mexican coast of the Gulf of Mexico. Despite the constant impacts from Nortes, there is no available classification that relates their characteristics (e.g. pressure gradients, wind speed), to the associated coastal impacts. This work presents a first approximation to characterize and classify Nortes, which is based on the assumption that the derived wave energy synthetizes information (i.e. wind intensity, direction and duration) of individual Norte events as they pass through the Gulf of Mexico. First, we developed an index to identify Nortes based on surface pressure differences of two locations. To validate the methodology we compared the events identified with other studies and available Nortes logs. Afterwards, we detected Nortes from the 1986/1987, 2008/2009 and 2009/2010 seasons and used their corresponding wind fields to derive the wave energy maps using a numerical wave model. We used the energy maps to classify the events into groups using manual (visual) and automatic classifications (principal component analysis and k-means). The manual classification identified 3 types of Nortes and the automatic classification identified 5, although 3 of them had a high degree of similarity. The principal component analysis indicated that all events have similar characteristics, as few components are necessary to explain almost all of the variance. The classification from the k-means indicated that 81% of analyzed Nortes affect the southeastern Gulf of Mexico, while a smaller percentage affects the northern Gulf of Mexico and even less affect the western Caribbean.

  2. Climate change impacts on marine biodiversity, fisheries and society in the Arabian Gulf.

    Science.gov (United States)

    Wabnitz, Colette C C; Lam, Vicky W Y; Reygondeau, Gabriel; Teh, Lydia C L; Al-Abdulrazzak, Dalal; Khalfallah, Myriam; Pauly, Daniel; Palomares, Maria L Deng; Zeller, Dirk; Cheung, William W L

    2018-01-01

    Climate change-reflected in significant environmental changes such as warming, sea level rise, shifts in salinity, oxygen and other ocean conditions-is expected to impact marine organisms and associated fisheries. This study provides an assessment of the potential impacts on, and the vulnerability of, marine biodiversity and fisheries catches in the Arabian Gulf under climate change. To this end, using three separate niche modelling approaches under a 'business-as-usual' climate change scenario, we projected the future habitat suitability of the Arabian Gulf (also known as the Persian Gulf) for 55 expert-identified priority species, including charismatic and non-fish species. Second, we conducted a vulnerability assessment of national economies to climate change impacts on fisheries. The modelling outputs suggested a high rate of local extinction (up to 35% of initial species richness) by 2090 relative to 2010. Spatially, projected local extinctions are highest in the southwestern part of the Gulf, off the coast of Saudi Arabia, Qatar and the United Arab Emirates (UAE). While the projected patterns provided useful indicators of potential climate change impacts on the region's diversity, the magnitude of changes in habitat suitability are more uncertain. Fisheries-specific results suggested reduced future catch potential for several countries on the western side of the Gulf, with projections differing only slightly among models. Qatar and the UAE were particularly affected, with more than a 26% drop in future fish catch potential. Integrating changes in catch potential with socio-economic indicators suggested the fisheries of Bahrain and Iran may be most vulnerable to climate change. We discuss limitations of the indicators and the methods used, as well as the implications of our overall findings for conservation and fisheries management policies in the region.

  3. 76 FR 70478 - Gulf of Mexico (GOM), Outer Continental Shelf (OCS), Western Planning Area (WPA), Oil and Gas...

    Science.gov (United States)

    2011-11-14

    ... DEPARTMENT OF THE INTERIOR Bureau of Ocean Energy Management Gulf of Mexico (GOM), Outer... studies, NEPA analysis, resource evaluation, economic analysis, and renewable energy. BSEE is responsible... Program AGENCY: Bureau of Ocean Energy Management (BOEM), Interior. ACTION: Notice of Availability (NOA...

  4. 77 FR 68147 - Gulf of Mexico, Outer Continental Shelf (OCS), Western Planning Area (WPA), Oil and Gas Lease...

    Science.gov (United States)

    2012-11-15

    ... Environmental Impact Statement (Multisale FEIS). Authority: This NOA is published pursuant to the regulations... NEPA process. The Multisale FEIS evaluated the environmental and socioeconomic impacts for WPA Lease... DEPARTMENT OF THE INTERIOR Bureau of Ocean Energy Management Gulf of Mexico, Outer Continental...

  5. Apportionment of sources affecting water quality: Case study of Kandla Creek, Gulf of Katchchh

    Digital Repository Service at National Institute of Oceanography (India)

    Dalal, S.G.; Shirodkar, P.V.; Verlekar, X.N.; Jagtap, T.G.; Rao, G.S.

    status of the environment. Several multivariate models are used for source apportionment studies, as they pinpoint the possible factors or sources that influence the water quality (Morales et al., 1999; Wunderlin et al., 2001; Petersen et al., 2001... and statistical approaches. Ecology 74: 2201– 2214. Morales, M. M., Martih, P., Llopis, A., Campos, L., and Sagrado, J. 1999. An environmental study by factor analysis of surface seawater in the Gulf of Valencia (western Mediterranean). Analytica Chimica Acta 394...

  6. Mitochondrial DNA sequence-based phylogenetic relationship of Trichiurus lepturus (Perciformes: Trichiuridae) from the Persian Gulf

    Science.gov (United States)

    Tamadoni Jahromi, S.; Mohd Noor, S. A.; Pirian, K.; Dehghani, R.; Nazemi, M.; Khazaali, A.

    2016-01-01

    In this study, mitochondrial DNA analysis using 16S ribosomal DNA (rDNA) was performed to investigate the phylogeny relationship of Trichiurus lepturus in the Persian Gulf compared to the other investigated area. The amplification of 16S rDNA resulted in a product of 600 bp in all samples. The results showed that the isolated strain belongs to T. lepturus showing 42 divergence sites among the same reported partial sequences of 16S rRNA gene from the other area (West Atlantic and Indo-Pacific area). Phylogeny results showed that all 18 haplotypes of the species clustered into five clades with reasonably high bootstrap support of values (>64%). Overall, the tree topology for both phylogenetic and phenetic trees for 16S rDNA was similar. Both trees exposed two major clusters, one wholly containing the haplotypes of the T. lepturus species belonging to Indo-Pacific area with two major sister groups including Persian Gulf specimen and the other cleared the Western Atlantic and Japan individuals clustered in another distinct clade supporting the differentiation between the two areas. Phylogenic relationship observed between the Persian Gulf and the other Indo-Pacific Individuals suggested homogeneity between two mentioned areas. PMID:27822250

  7. Arms, oil and security in the Gulf: a tenuous balance

    International Nuclear Information System (INIS)

    Herzog, Serge

    1999-01-01

    The GCC (Gulf Cooperation Council) countries are among the world's biggest importers of weapons. It is argued that the current policy for security i.e. awarding big defence contracts in return for Western security commitments, is untenable - the income (now falling) is better spent on improving the quality of life through increased wages, better public services and improved social programmes. Data illustrating the dependency on oil of several GCC countries are given. It is also argued that the need for high quality personnel in the weapons field starves the economy with respect to diversification demands and the need to reduce dependency on foreign labour. The military strength and defence needs of the GCC countries and the role of the western world in defending GCC countries are discussed. The potential military threat from Iran and Iraq is mentioned: it appears unlikely that the GCC would be able to cope with aggression from these two countries without outside help

  8. Investigation of heavy metal pollutants at various depths in the Gulf of Izmit

    International Nuclear Information System (INIS)

    Ergül, Halim Aytekin; Varol, Tolga; Ay, Ümit

    2013-01-01

    Highlights: • Monitoring seasonal variations in heavy metal pollution. • Heavy metal levels according to depth in seawater from the Gulf of Izmit. • Industrial activity and biological life co-exist in Izmit Bay. -- Abstract: In this study, we report results concerning the accumulation of heavy metals in seawater from Izmit Bay. The bay was divided into the three parts: the eastern, the central and the western basins. The goal of this study was to determine levels of heavy metals at various depths in the bay between April 2008 and May 2010. Liquid–liquid extractions were performed on seawater samples. An atomic absorption spectrophotometer was used to measure levels of six metals: lead, cadmium, chromium, iron, manganese and zinc. We applied our results to evaluate the status of pollution in the Gulf of Izmit. Significant seasonal differences in metal concentrations and higher concentrations of many metals in water near the shore are evidence for uncontrolled release of pollutants in the water

  9. Tides and seiches in gulfs

    International Nuclear Information System (INIS)

    Pierini, S.

    1981-01-01

    In this paper Garrett's theory of tides in gulfs is extended so that its formalism includes the free oscillations (seiches) of the gulf. The elevation of the free surface zeta and the velocity field u are obtained in a rectangular, one-dimensional gulf opening into an infinite ocean. An application of the results to the Adriatic sea can explain qualitatively the long life of the uninodal seiche of that basin. (author)

  10. Watermass structure in the western Indian Ocean - Part 2. The spreading and transformation of the Persian Gulf water

    Digital Repository Service at National Institute of Oceanography (India)

    Premchand, K.; Sastry, J.S.; Murty, C.S.

    The spreading and the transformation of the Persian Gulf Watermass (PGW) in the Arabian Sea and the Indian Ocean have been presented. The core layer of this watermass is found in the depth range of 250-300 m over most of the Arabian Sea with a...

  11. Gulf Canada Resources Ltd. annual information form for the year ended December 31, 1993

    International Nuclear Information System (INIS)

    1994-01-01

    Gulf Canada Resources is a major Canadian explorer and producer of oil and natural gas. Important areas of activity are Western Canada, Indonesia, and Russia. The company has interests in Canadian frontier lands (east coast offshore and Arctic), operates gas processing plants and pipelines, and participates in oil sands projects in Alberta. Gulf Canada activities for 1993 are reviewed, with descriptions of Canadian and international operations along with financial statements and associated information. Key financial actions taken in 1993 included completion of an asset sale program which facilitated the company strategy of focusing on a small number of core properties. Sales volumes reflected those asset sales as well as infrastructure constraints. Gross liquids sales averaged 90,000 bbl/d, down from 91,400 bbl/d in 1992, and gross natural gas sales averaged 270 million ft 3 /d, compared with 292 million ft 3 /d in 1992. The asset sales enabled reduction of net debt by 28% to $947 million. Capital spending increased ca 20% from 1992 levels to $169 million, and western Canada finding and development costs were reduced from 1992 levels to under $4/bbl of oil equivalent. Gross conventional reserves additions replaced ca 125% of production. Total financial loss for the year was $32 million, compared to a loss of $302 million in 1992. 13 figs., 10 tabs

  12. Influence of Subtropical Jetstream on Arabian Gulf Precipitation

    Science.gov (United States)

    Sandeep, S.; Pauluis, O.; Ravindran, A. M.; TP, S.

    2017-12-01

    The Arabian Gulf and surrounding regions are predominantly arid. However, this region hosts a large population due to the intense economic activity that is centered on the exploration of natural resources in and around the Arabian Gulf. Thus, few precipitation events that occur during boreal winter are important for society and ecology of this region. The mechanisms of winter precipitation over the Gulf are not well understood, partly due to a lack of long term meteorological observation. Here we explore the dynamics of Arabian Gulf winter precipitation events using available observations and a high resolution atmospheric model simulation. Our analyses show that the northern Gulf receives about six times more precipitation than the southern Gulf. Often, the southern Gulf precipitation forms as a result of downstream development of northern Gulf disturbance. The southward movement of northern Gulf disturbances is influenced by the location of subtropical jet. The probability of a northern Gulf precipitating weather system to move south is higher when the subtropical jet is located equatorward of 30°N. The equatorward position of jet favors the penetration of mid-latitude weather systems over the Arabian Peninsula, which in turn pushes the Arabian anticyclone eastward and triggers moisture transport from the Arabian Sea that is essential for southern Gulf precipitation events.

  13. Post-Glacial Development of Western North Atlantic - Labrador Sea Oceanographic Circulation

    DEFF Research Database (Denmark)

    Sheldon, Christina

    2015-01-01

    The subpolar North Atlantic Ocean – Labrador Sea region is an important site for both oceanographic and atmospheric circulation. The convergence of ocean currents causes downwelling of cold, saline water in the subpolar gyre, helping to drive the world-wide thermohaline circulation system. The main......, the subpolar gyre weakened, which carried less Gulf Stream-derived water to the western North Atlantic Ocean via the West Greenland Current and the Slopewater Current, south of Newfoundland. Changes in the subpolar gyre circulation had developed to be analogous to the modern climate by approximately 2 cal kyr...... surface currents involved in the gyre are the south-flowing, cold and relatively fresh Labrador Current and the north-flowing, warm and relatively saline Gulf Stream. The oceanic front between these two major currents moves north and south, dependent on the relative strengths of the currents, impacting...

  14. Comparative phylogeography of reef fishes from the Gulf of Aden to the Arabian Sea reveals two cryptic lineages

    KAUST Repository

    DiBattista, Joseph; Gaither, Michelle R.; Hobbs, Jean-Paul A.; Saenz Agudelo, Pablo; Piatek, Marek J.; Bowen, Brian W.; Rocha, Luiz A.; Howard Choat, J.; McIlwain, Jennifer H.; Priest, Mark; Sinclair-Taylor, Tane; Berumen, Michael L.

    2017-01-01

    The Arabian Sea is a heterogeneous region with high coral cover and warm stable conditions at the western end (Djibouti), in contrast to sparse coral cover, cooler temperatures, and upwelling at the eastern end (southern Oman). We tested for barriers to dispersal across this region (including the Gulf of Aden and Gulf of Oman), using mitochondrial DNA surveys of 11 reef fishes. Study species included seven taxa from six families with broad distributions across the Indo-Pacific and four species restricted to the Arabian Sea (and adjacent areas). Nine species showed no significant genetic partitions, indicating connectivity among contrasting environments spread across 2000 km. One butterflyfish (Chaetodon melannotus) and a snapper (Lutjanus kasmira) showed phylogenetic divergences of d = 0.008 and 0.048, respectively, possibly indicating cryptic species within these broadly distributed taxa. These genetic partitions at the western periphery of the Indo-Pacific reflect similar partitions recently discovered at the eastern periphery of the Indo-Pacific (the Hawaiian and the Marquesan Archipelagos), indicating that these disjunctive habitats at the ends of the range may serve as evolutionary incubators for coral reef organisms.

  15. Comparative phylogeography of reef fishes from the Gulf of Aden to the Arabian Sea reveals two cryptic lineages

    KAUST Repository

    DiBattista, Joseph

    2017-02-01

    The Arabian Sea is a heterogeneous region with high coral cover and warm stable conditions at the western end (Djibouti), in contrast to sparse coral cover, cooler temperatures, and upwelling at the eastern end (southern Oman). We tested for barriers to dispersal across this region (including the Gulf of Aden and Gulf of Oman), using mitochondrial DNA surveys of 11 reef fishes. Study species included seven taxa from six families with broad distributions across the Indo-Pacific and four species restricted to the Arabian Sea (and adjacent areas). Nine species showed no significant genetic partitions, indicating connectivity among contrasting environments spread across 2000 km. One butterflyfish (Chaetodon melannotus) and a snapper (Lutjanus kasmira) showed phylogenetic divergences of d = 0.008 and 0.048, respectively, possibly indicating cryptic species within these broadly distributed taxa. These genetic partitions at the western periphery of the Indo-Pacific reflect similar partitions recently discovered at the eastern periphery of the Indo-Pacific (the Hawaiian and the Marquesan Archipelagos), indicating that these disjunctive habitats at the ends of the range may serve as evolutionary incubators for coral reef organisms.

  16. Gulf Canada Resources Limited 1996 annual report - mission 2006: possible

    International Nuclear Information System (INIS)

    1997-01-01

    Gulf Canada Resources Limited, which trades under the symbol GOU, is a publicly traded company that explores, develops, produces and markets conventional and synthetic crude oil, natural gas and natural gas liquids. In 1996, the company's main operating centres were in western Canada, Indonesia, Algeria, Australia, and the United States. This report presents an operations review for all theatres of operation, a consolidated financial statement, revenues and expenditures by source and common share information. GOU's acquisition of Clyde Petroleum in early 1997 has added significant producing assets and exploration lands in the United Kingdom, the Netherlands, Indonesia, Australia, Libya, Syria, Yemen, the Falkland Islands and Argentina. tabs., figs

  17. Gulf operations still recovering

    International Nuclear Information System (INIS)

    Koen, A.D.

    1992-01-01

    This paper reports that reports of damage caused by Hurricane Andrew were leveling off last week at the U.S. Minerals Management Service as Gulf of Mexico operators pressed ahead with repairs. The hurricane struck South Florida Aug. 4, churned west into the gulf, then swung north and hit the South Louisiana coast Aug. 5. By the close of business Sept. 8 MMS had received damage reports covering 83 pipeline segments and 193 platforms and satellite installations. MMS last week estimated about 500 MMcfd of gas production had been restored in the gulf and 100,000-150,000 b/d of oil. Production still lost as a result of Andrew was estimated at 2-2.5 bcfd of gas and 90,000-120 b/d of oil. MMS estimates Gulf of Mexico wells before the storm were producing about 12.5-13 bcfd of gas and 750,000 b/d of oil

  18. Gulf Canada's corporate journey includes the Strachan plant and its innovative environmental clean-up

    International Nuclear Information System (INIS)

    Anon.

    1996-01-01

    Gulf Canada Resources Limited traces its origins to the British-American Oil Company in Ontario established in 1906. By its 100th anniversary in 2006, Gulf Canada wants to become the world's pre-eminent oil and gas company, by finding more oil and gas, and doing it better, and producing more oil and gas and doing it for less than any other oil company. Some recent accomplishments towards that end have been recounted: early in 1996 the company began producing 80,000 barrels per day of Alberta's royalty crude oil; spent $250 million to purchase Pennzoil's Western Canada oil and gas assets; acquired a 9.03 per cent interest in Syncrude Canada; announced a huge find of oil and gas in the Corridor Block Gas Project in Indonesia; acquired 400,000 acres in North Dakota, Wyoming, Montana and Utah for exploration; and celebrated the 25th anniversary of its Strachan sour gas plant, located just southwest of Rocky Mountain House. Today the plant has the capacity to process 275 million cu. ft. per day of sour gas, and is licensed to process gas from 15 fields in the area. It would appear that Gulf Canada is making giant steps towards achieving its self-imposed goals even before 2006

  19. Aerial radiometric and magnetic survey: Beeville/Bay City National Topographic Map, Texas Gulf Coast

    International Nuclear Information System (INIS)

    1979-01-01

    As part of the National Uranium Resource Evaluation program Geodata International, Inc. of Dallas, Texas, conducted an airborne gamma ray and total magnetic field survey of Beeville/Bay City Quadrangle of the Texas Gulf Coast area. Volume 1 gives the description of the program and results, and volume 2 gives the flight line profile data and statistical analysis results. The Beeville/Bay City Map Sheet shows Tertiary and Quaternary-aged strata which are part of the coastal plain of the Gulf Coast Geosyncline. The Cenozoic sediments overlie Mesozoic, Paleozoic, and Precambrian rocks, and have a relatively gentle homoclinal dip toward the gulf. The Quaternary and Tertiary sediments of the map sheet overlie the western flank of the Houston-East Texas Embayment, the northeastern side of the Rio Grande Embayment, and the San Marcos Arch. Recent and Pleistocene sediments crop-out in the south and east, and are more extensive in the vicinity of the structural embayments. The Pliocene-aged Goliad Formation crops-out extensively to the northwest. Miocene and Eocene strata occur in the northwestern corner of the map sheet. The uranium deposits occur in the Tertiary strata, but are most intensely mined in the Eocene strata immediately to the west of the map sheet area

  20. Temperature of the Gulf Stream

    Science.gov (United States)

    2002-01-01

    The Gulf Stream is one of the strong ocean currents that carries warm water from the sunny tropics to higher latitudes. The current stretches from the Gulf of Mexico up the East Coast of the United States, departs from North America south of the Chesapeake Bay, and heads across the Atlantic to the British Isles. The water within the Gulf Stream moves at the stately pace of 4 miles per hour. Even though the current cools as the water travels thousands of miles, it remains strong enough to moderate the Northern European climate. The image above was derived from the infrared measurements of the Moderate-resolution Imaging Spectroradiometer (MODIS) on a nearly cloud-free day over the east coast of the United States. The coldest waters are shown as purple, with blue, green, yellow, and red representing progressively warmer water. Temperatures range from about 7 to 22 degrees Celsius. The core of the Gulf Stream is very apparent as the warmest water, dark red. It departs from the coast at Cape Hatteras, North Carolina. The cool, shelf water from the north entrains the warmer outflows from the Chesapeake and Delaware Bays. The north wall of the Gulf Stream reveals very complex structure associated with frontal instabilities that lead to exchanges between the Gulf Stream and inshore waters. Several clockwise-rotating warm core eddies are evident north of the core of the Gulf Stream, which enhance the exchange of heat and water between the coastal and deep ocean. Cold core eddies, which rotate counter clockwise, are seen south of the Gulf Stream. The one closest to Cape Hatteras is entraining very warm Gulf Stream waters on its northwest circumference. Near the coast, shallower waters have warmed due to solar heating, while the deeper waters offshore are markedly cooler (dark blue). MODIS made this observation on May 8, 2000, at 11:45 a.m. EDT. For more information, see the MODIS-Ocean web page. The sea surface temperature image was created at the University of Miami using

  1. Understanding north-western Mediterranean climate variability: a multi-proxy and multi-sequence approach based on wavelet analysis.

    Science.gov (United States)

    Azuara, Julien; Lebreton, Vincent; Jalali, Bassem; Sicre, Marie-Alexandrine; Sabatier, Pierre; Dezileau, Laurent; Peyron, Odile; Frigola, Jaime; Combourieu-Nebout, Nathalie

    2017-04-01

    Forcings and physical mechanisms underlying Holocene climate variability still remain poorly understood. Comparison of different paleoclimatic reconstructions using spectral analysis allows to investigate their common periodicities and helps to understand the causes of past climate changes. Wavelet analysis applied on several proxy time series from the Atlantic domain already revealed the first key-issues on the origin of Holocene climate variability. However the differences in duration, resolution and variance between the time-series are important issues for comparing paleoclimatic sequences in the frequency domain. This work compiles 7 paleoclimatic proxy records from 4 time-series from the north-western Mediterranean all ranging from 7000 to 1000 yrs cal BP: -pollen and clay mineral contents from the lagoonal sediment core PB06 recovered in southern France, -Sea Surface Temperatures (SST) derived from alkenones, concentration of terrestrial alkanes and their average chain length (ACL) from core KSGC-31_GolHo-1B recovered in the Gulf of Lion inner-shelf, - δ18O record from speleothems recovered in the Asiul Cave in north-western Spain, -grain size record from the deep basin sediment drift core MD99-2343 north of Minorca island. A comparison of their frequency content is proposed using wavelet analysis and cluster analysis of wavelet power spectra. Common cyclicities are assessed using cross-wavelet analysis. In addition, a new algorithm is used in order to propagate the age model errors within wavelet power spectra. Results are consistents with a non-stationnary Holocene climate variability. The Halstatt cycles (2000-2500 years) depicted in many proxies (ACL, errestrial alkanes and SSTs) demonstrate solar activity influence in the north-western Mediterranean climate. Cluster analysis shows that pollen and ACL proxies, both indicating changes in aridity, are clearly distinct from other proxies and share significant common periodicities around 1000 and 600 years

  2. Physical profile data from CTD casts in the Gulf of Alaska from the R/V ALPHA HELIX from 2001-04-18 to 2001-12-11 (NODC Accession 0000739)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Physical profile data were collected from CTD casts in the Gulf of Alaska from the R/V Alpha Helix. Data were collected by Western Washington University (WWU) and...

  3. Thermohaline circulation in the Gulf of California

    Science.gov (United States)

    Bray, N. A.

    1988-05-01

    The Gulf of California, a narrow, semienclosed sea, is the only evaporative basin of the Pacific Ocean. As a result of evaporative forcing, salinities in the gulf are 1 to 2 ‰ higher than in the adjacent Pacific at the same latitude. This paper examines the thermohaline structure of the gulf and the means by which thermohaline exchange between the Pacific and the gulf occurs, over time scales of months to years. In addition to evaporative forcing, air-sea heat fluxes and momentum fluxes are important to thermohaline circulation in the gulf. From observations presented here, it appears that the gulf gains heat from the atmosphere on an annual average, unlike the Mediterranean and Red seas, which have comparable evaporative forcing. As a result, outflow from the gulf tends to be less dense than inflow from the Pacific. Winds over the gulf change direction with season, blowing northward in summer and southward in winter. This same seasonal pattern appears in near-surface transports averaged across the gulf. The thermohaline circulation, then, consists of outflow mostly between about 50 m and 250 m, inflow mostly between 250 m and 500 m, and a surface layer in which the direction of transport changes with seasonal changes in the large-scale winds. Using hydrographic observations from a section across the central gulf, total transport in or out of the northern gulf is estimated to be 0.9 Sv, heat gain from the atmosphere is estimated to be 20 to 50 W m-2, and evaporation is estimated to be 0.95 m yr-1. These estimates are annual averages, based on cruises from several years. Seasonal variations in thermohaline structure in the gulf are also examined and found to dominate the variance in temperature and density in the top 500 m of the water column. Salinity has little seasonal variability but does exhibit more horizontal variablility than temperature or density. Major year-to-year variations in thermohaline structure may be attributable to El Niño-Southern Oscillation

  4. 78 FR 64242 - Outer Continental Shelf (OCS), Gulf of Mexico (GOM), Oil and Gas Lease Sales, Western Planning...

    Science.gov (United States)

    2013-10-28

    ... (NOA) of the Draft Supplemental Environmental Impact Statement (EIS) and Public Meetings. SUMMARY: BOEM... Impact Statement (OCS EIS/EA BOEM 2012-019) (2012- 2017 WPA/CPA Multisale EIS) and in the Gulf of Mexico... Lease Sale 231, Final Supplemental Environmental Impact Statement (OCS EIS/EA BOEM 2013-0118) (WPA 233...

  5. 76 FR 69136 - Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic; Reef Fish Fishery of the Gulf of...

    Science.gov (United States)

    2011-11-08

    ... interim measures to reduce overfishing of gag in the Gulf of Mexico (Gulf) implemented by a temporary rule... overfishing of gag in the Gulf by reducing the commercial quota for gag and, thus, the combined commercial... this rule is to reduce overfishing of the gag resource in the Gulf. [[Page 69137

  6. 77 FR 2960 - Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic; Reef Fish Fishery of the Gulf of...

    Science.gov (United States)

    2012-01-20

    ... the Caribbean, Gulf of Mexico, and South Atlantic; Reef Fish Fishery of the Gulf of Mexico; Exempted... and retention. This study, to be conducted in the exclusive economic zone (EEZ) of the Gulf of Mexico (Gulf) off Louisiana, is intended to better document the age structure and life history of fish...

  7. 77 FR 30507 - Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic; Reef Fish Fishery of the Gulf of...

    Science.gov (United States)

    2012-05-23

    ... the Caribbean, Gulf of Mexico, and South Atlantic; Reef Fish Fishery of the Gulf of Mexico; Exempted... and retention. This study, to be conducted in the exclusive economic zone (EEZ) of the Gulf of Mexico (Gulf), is intended to better document the age structure and life history of fish associated with...

  8. Beyond the Gulf Metropolises

    DEFF Research Database (Denmark)

    Wippel, Steffen

    2013-01-01

    The extended studies on urbanisation in the Gulf region that came up in the early 2000s concentrated on the main centres with their worldwide-admired mega-projects and branding strategies. Only rather recently did a more general interest arise in the second-tier range of Gulf cities, which also s...

  9. Crustal structure of the rifted volcanic margins and uplifted plateau of Western Yemen from receiver function analysis

    Science.gov (United States)

    Ahmed, Abdulhakim; Tiberi, Christel; Leroy, Sylvie; Stuart, Graham W.; Keir, Derek; Sholan, Jamal; Khanbari, Khaled; Al-Ganad, Ismael; Basuyau, Clémence

    2013-06-01

    We analyse P-wave receiver functions across the western Gulf of Aden and southern Red Sea continental margins in Western Yemen to constrain crustal thickness, internal crustal structure and the bulk seismic velocity characteristics in order to address the role of magmatism, faulting and mechanical crustal thinning during continental breakup. We analyse teleseismic data from 21 stations forming the temporary Young Conjugate Margins Laboratory (YOCMAL) network together with GFZ and Yemeni permanent stations. Analysis of computed receiver functions shows that (1) the thickness of unextended crust on the Yemen plateau is ˜35 km; (2) this thins to ˜22 km in coastal areas and reaches less than 14 km on the Red Sea coast, where presence of a high-velocity lower crust is evident. The average Vp/Vs ratio for the western Yemen Plateau is 1.79, increasing to ˜1.92 near the Red Sea coast and decreasing to 1.68 for those stations located on or near the granitic rocks. Thinning of the crust, and by inference extension, occurs over a ˜130-km-wide transition zone from the Red Sea and Gulf of Aden coasts to the edges of the Yemen plateau. Thinning of continental crust is particularly localized in a <30-km-wide zone near the coastline, spatially co-incident with addition of magmatic underplate to the lower crust, above which on the surface we observe the presence of seaward dipping reflectors (SDRs) and thickened Oligo-Miocene syn-rift basaltic flows. Our results strongly suggest the presence of high-velocity mafic intrusions in the lower crust, which are likely either synrift magmatic intrusion into continental lower crust or alternatively depleted upper mantle underplated to the base of the crust during the eruption of the SDRs. Our results also point towards a regional breakup history in which the onset of rifting was synchronous along the western Gulf of Aden and southern Red Sea volcanic margins followed by a second phase of extension along the Red Sea margin.

  10. Sedimentological imprint on subseafloor microbial communities in Western Mediterranean Sea Quaternary sediments

    Science.gov (United States)

    Ciobanu, M.-C.; Rabineau, M.; Droz, L.; Révillon, S.; Ghiglione, J.-F.; Dennielou, B.; Jorry, S.-J.; Kallmeyer, J.; Etoubleau, J.; Pignet, P.; Crassous, P.; Vandenabeele-Trambouze, O.; Laugier, J.; Guégan, M.; Godfroy, A.; Alain, K.

    2012-09-01

    An interdisciplinary study was conducted to evaluate the relationship between geological and paleoenvironmental parameters and the bacterial and archaeal community structure of two contrasting subseafloor sites in the Western Mediterranean Sea (Ligurian Sea and Gulf of Lion). Both depositional environments in this area are well-documented from paleoclimatic and paleooceanographic point of views. Available data sets allowed us to calibrate the investigated cores with reference and dated cores previously collected in the same area, and notably correlated to Quaternary climate variations. DNA-based fingerprints showed that the archaeal diversity was composed by one group, Miscellaneous Crenarchaeotic Group (MCG), within the Gulf of Lion sediments and of nine different lineages (dominated by MCG, South African Gold Mine Euryarchaeotal Group (SAGMEG) and Halobacteria) within the Ligurian Sea sediments. Bacterial molecular diversity at both sites revealed mostly the presence of the classes Alphaproteobacteria, Betaproteobacteria and Gammaproteobacteria within Proteobacteria phylum, and also members of Bacteroidetes phylum. The second most abundant lineages were Actinobacteria and Firmicutes at the Gulf of Lion site and Chloroflexi at the Ligurian Sea site. Various substrates and cultivation conditions allowed us to isolate 75 strains belonging to four lineages: Alpha-, Gammaproteobacteria, Firmicutes and Actinobacteria. In molecular surveys, the Betaproteobacteria group was consistently detected in the Ligurian Sea sediments, characterized by a heterolithic facies with numerous turbidites from a deep-sea levee. Analysis of relative betaproteobacterial abundances and turbidite frequency suggested that the microbial diversity was a result of main climatic changes occurring during the last 20 ka. Statistical direct multivariate canonical correspondence analyses (CCA) showed that the availability of electron acceptors and the quality of electron donors (indicated by age

  11. Marine archaeological exploration on the western coast, Gulf of Khambhat

    Digital Repository Service at National Institute of Oceanography (India)

    Gaur, A.S.; Bhatt, B.K.

    large number of stone anchors at Gogha, Hatab, and Gopnath. These are similar to those reported from the western coast of the Saurashtra, particularly at Dwarka (Gaur et al. 2001), Bet Dwarka (Sundaresh et al. 2004), Miyani, Visawada (Gaur et al. 2007.... Stone Anchors from Bet Dwarka Island, Gujarat Coast, Bulletin of Australian Institute of Maritime Archaeology 26: 43-50 Yang, Q.Z. 1990. South- Song Stone Anchors in China, Korea and Japan, International Journal of Nautical Archaeology 19 (2): 113-121. ...

  12. 77 FR 47623 - Entergy Gulf States Louisiana, LLC; Notice of Filing

    Science.gov (United States)

    2012-08-09

    ... correct a proposed accounting error related to its past practice of deferring certain income tax items. Additionally, on July 2, 2012, Entergy Gulf States submitted additional information regarding its accounting... submission of protests and interventions in lieu of paper using the ``eFiling'' link at http://www.ferc.gov...

  13. 78 FR 45557 - Gulf of Mexico, Outer Continental Shelf (OCS), Western Planning Area (WPA) Oil and Gas Lease Sale...

    Science.gov (United States)

    2013-07-29

    ... Supplemental Environmental Impact Statement (WPA 233/ CPA 231 Supplemental EIS). WPA Lease Sale 233, scheduled... EIS evaluated the environmental and socioeconomic impacts for WPA Lease Sale 233. SUPPLEMENTARY... DEPARTMENT OF THE INTERIOR Bureau of Ocean Energy Management [MMAA104000] Gulf of Mexico, Outer...

  14. Linear Transect Surveys of Abundance and Density of Cetaceans in The Area Near the Dzharylgach Island in the North-Western Black Sea

    Directory of Open Access Journals (Sweden)

    Gladilina E. V.

    2017-08-01

    Full Text Available The first assessment of cetacean density and abundance by linear transect survey was conducted in 2016 and 2017 in the shallowest coastal area of the Ukrainian sector of the north-western Black Sea, in the Dzharylgach Gulf and the northern Karkinit Gulf, total area up to 259 km2. Three cetacean species were found present in the area in summer, and the harbour porpoise was the most abundant species with the abundance of at least a few hundred animals (estimated as 175 individuals in the Dzharylgach Gulf, whereas the common dolphins (59 and bottlenose dolphins (31 were present in lesser numbers. Common and bottlenose dolphins showed the clearest patterns of habitat preferences, being restricted respectively to the Dzharylgach and the northern Karkinit Gulf; an unusual trait is the preference of the shallowest habitat by common dolphins. Recorded density of harbour porpoises in the Dzharylgach Gulf is among the highest in the whole Black Sea. Thus, the studied area may be an important summer habitat for cetaceans.

  15. Gulf Coast Ecosystem Restoration Task Force---Gulf of Mexico Ecosystem Science Assessment and Needs

    Science.gov (United States)

    Walker, Shelby; Dausman, Alyssa M.; Lavoie, Dawn L.

    2012-01-01

    The Gulf Coast Ecosystem Restoration Task Force (GCERTF) was established by Executive Order 13554 as a result of recommendations from “America’s Gulf Coast: A Long-term Recovery Plan after the Deepwater Horizon Oil Spill” by Secretary of the Navy Ray Mabus (Mabus Report). The GCERTF consists of members from 11 Federal agencies and representatives from each State bordering the Gulf of Mexico. The GCERTF was charged to develop a holistic, long-term, science-based Regional Ecosystem Restoration Strategy for the Gulf of Mexico. Federal and State agencies staffed the GCERTF with experts in fields such as policy, budgeting, and science to help develop the Strategy. The Strategy was built on existing authorities and resources and represents enhanced collaboration and a recognition of the shared responsibility among Federal and State governments to restore the Gulf Coast ecosystem. In this time of severe fiscal constraints, Task Force member agencies and States are committed to establishing shared priorities and working together to achieve them.As part of this effort, three staffers, one National Oceanic and Atmospheric Administration (NOAA) scientist and two U.S. Geological Survey (USGS) scientists, created and led a Science Coordination Team (SCT) to guide scientific input into the development of the Gulf of Mexico Regional Ecosystem Restoration Strategy. The SCT leads from the GCERTF coordinated more than 70 scientists from the Federal and State Task Force member agencies to participate in development of a restoration-oriented science document focused on the entire Gulf of Mexico, from inland watersheds to the deep blue waters. The SCT leads and scientists were organized into six different working groups based on expanded goals from the Mabus Report: Coastal habitats are healthy and resilient.Living coastal and marine resources are healthy, diverse, and sustainable.Coastal communities are adaptive and resilient.Storm buffers are sustainable.Inland habitats and

  16. Variability in north tropical atlantic over the last 20 000 years and holocene gulf stream activity

    International Nuclear Information System (INIS)

    Cleroux, C.

    2007-10-01

    Modern oceanographical studies shown that most of the ocean heat content in the North Atlantic Western Boundary Current region is stored in the upper 400 meters. To study past heat content and Gulf Stream activity, we performed coupled analyses of oxygen isotopic and trace elemental composition on several foraminifera species to reconstruct upper water column temperature and salinity. Calcification depths of Globorotalia inflata, Globorotalia truncatulinoides and Pulleniatina obliquiloculata have been constrain by correlating modern hydrographic data to oxygen isotopic measurement of North Atlantic core-top samples. We found that the three deep-dwelling foraminifera species have a preferred habitat at the base of the seasonal thermocline (Cleroux et al, 2007). The same set of North Atlantic core-tops has been used to define relationships between trace elemental compositions and temperature. We established calibrations between Mg/Ca ratio or Sr/Ca ratio and temperature for the three deep-dwelling foraminifera (Cleroux et al, submitted). We apply this strategy on the core MD99-2203 located off Cape Hatteras where the Gulf Stream separate from the United States coast. High-resolution surface reconstructions over the Holocene show low amplitude periodic temperature and salinity changes that could be related to NAO type mechanisms. Large hydrological changes in sub-surface reflect variations of Labrador current and Mode Water influences. Using recent studies on Mode Water formation and Gulf Stream heat advection, we interpret our results in term of ocean heat content and Gulf Stream activity. (author)

  17. Baroclinic flows, transports, and kinematic properties in a cyclonic-anticyclonic-cyclonic ring triad in the Gulf of Mexico

    Science.gov (United States)

    Vidal, VíCtor M. V.; Vidal, Francisco V.; HernáNdez, Abel F.; Meza, Eustorgio; PéRez-Molero, José M.

    1994-04-01

    During October-November 1986 the baroclinic circulation of the central and western Gulf of Mexico was dominated by an anticyclonic ring that was being bisected by two north and south flanking cyclonic rings. The baroclinic circulation revealed a well-defined cyclonic-anticyclonic-cyclonic triad system. The anticyclone's collision against the western gulf continental slope at 22.5°N, 97°W originated the north and south flanking cyclonic rings. The weakening of the anticyclone's relative vorticity, during the collision, was compensated by along-shelf north (26 cm s-1) and south (58 cm s-1) jet currents and by the anticyclone's flanking water mass's gain of cyclonic vorticity from lateral shear contributed by east (56 cm s-1) and west (42 cm s-1) current jets with individual mass transports of ˜18 Sv. Within the 0-1000 and 0-500 dbar layers and across 96°W the magnitudes of the colliding westward transports were 17.80 and 8.59 Sv, respectively. These corresponding transports were 85 and 94% balanced by along-shelf jet currents north and south of the anticyclone's collision zone. This indicates that only minor amounts (energy from the upper to the deeper water layers. Our vertical transport estimates through the 1000-m-depth surface revealed a net vertical descending transport of 0.4 Sv for the ring triad system. This mass flux occurred primordially within the south central gulf region and most likely constituted a principal mechanism that propelled the gulf's deep horizontal circulation. The volume renewal time is ˜5 years for the ring triad system within 0-1000 dbar. The volume renewal time for the gulf's deep water layer (2000-3000 dbar), estimated as a function of its horizontal outflowing mass flux (1.96 Sv), is of the same order of magnitude and reveals that the deeper layer of the Gulf of Mexico is as well ventilated as its upper layer (0-1000 dbar). The ring triad's surface kinematic properties were derived from the sea surface baroclinic circulation field

  18. Paralytic shellfish toxin profile in strains of the dinoflagellate Gymnodium cataenatum and the scallop Argopecten ventricosus G.B. Sowerby II from Bahia Concepción, Gulf of California, Mexico

    OpenAIRE

    Band Schmidt, Christine Johanna; Bustillos Guzmán, José J.; Gárate Lizárraga, Ismael; Lechuga Deveze, Carlos; Reinhardt, K.; Luckas, Bernd

    2005-01-01

    Gymnodinium catenatum Graham is a paralytic shellfish poison (PSP) producer that was described for the first time from the Gulf of California in 1943. During the last decade, its distribution along the Mexican Pacific coastline has increased. In Bahía Concepción, a coastal lagoon on the western side of the Gulf of California, G. catenatum has been linked to significant PSP concentrations found in mollusks. In this study, we describe the saxitoxin profile of 16 strains of G. catenatum, and cat...

  19. Wind-driven coastal upwelling along the western boundary of the Bay of Bengal during the southwest monsoon

    Digital Repository Service at National Institute of Oceanography (India)

    Shetye, S.R.; Shenoi, S.S.C.; Gouveia, A.D.; Michael, G.S.; Sundar, D.; Nampoothiri, G.

    The western boundary regions of the world's oceans generally show the influence of remote forcing by the presence of a western boundary current. On the continental shelf off Florida, U.S.A., influence of the Gulf Stream is felt at locations as shallow as 75... upwelling on the Bay of Bengal 1403 ee" ~t 32 i i* Fig. 6. bo" , e.5, , , to" Salinity (ppt) at the surface. Dots indicate station locations. using available climatologies. The charts for 10-day mean ship-drift averaged over 1 ° x 1 ° given...

  20. Integration of numerical modeling and observations for the Gulf of Naples monitoring network

    Science.gov (United States)

    Iermano, I.; Uttieri, M.; Zambianchi, E.; Buonocore, B.; Cianelli, D.; Falco, P.; Zambardino, G.

    2012-04-01

    Lethal effects of mineral oils on fragile marine and coastal ecosystems are now well known. Risks and damages caused by a maritime accident can be reduced with the help of better forecasts and efficient monitoring systems. The MED project TOSCA (Tracking Oil Spills and Coastal Awareness Network), which gathers 13 partners from 4 Mediterranean countries, has been designed to help create a better response system to maritime accidents. Through the construction of an observational network, based on state of the art technology (HF radars and drifters), TOSCA provides real-time observations and forecasts of the Mediterranean coastal marine environmental conditions. The system is installed and assessed in five test sites on the coastal areas of oil spill outlets (Eastern Mediterranean) and on high traffic areas (Western Mediterranean). The Gulf of Naples, a small semi-closed basin opening to the Tyrrhenian Sea is one of the five test-sites. It is of particular interest from both the environmental point of view, due to peculiar ecosystem properties in the area, and because it sustains important touristic and commercial activities. Currently the Gulf of Naples monitoring network is represented by five automatic weather stations distributed along the coasts of the Gulf, one weather radar, two tide gauges, one waverider buoy, and moored physical, chemical and bio-optical instrumentation. In addition, a CODAR-SeaSonde HF coastal radar system composed of three antennas is located in Portici, Massa Lubrense and Castellammare. The system provides hourly data of surface currents over the entire Gulf with a 1km spatial resolution. A numerical modeling implementation based on Regional Ocean Modeling System (ROMS) is actually integrated in the Gulf of Naples monitoring network. ROMS is a 3-D, free-surface, hydrostatic, primitive equation, finite difference ocean model. In our configuration, the model has high horizontal resolution (250m), and 30 sigma levels in the vertical. Thanks

  1. Major reproductive health characteristics in male Gulf War Veterans. The Danish Gulf War Study

    DEFF Research Database (Denmark)

    Ishøy, T; Andersson, A M; Suadicani, Poul Vilhelm

    2001-01-01

    The male reproductive system could have been affected by various hazardous agents and exposures during and in the aftermath of the Persian Gulf War scenario. We tested the hypothesis that, compared to controls, male Danish Gulf War Veterans would have adverse sex hormone levels, decreased fertility...

  2. Population Structure, Abundance and Movement of Whale Sharks in the Arabian Gulf and the Gulf of Oman.

    Science.gov (United States)

    Robinson, David P; Jaidah, Mohammed Y; Bach, Steffen; Lee, Katie; Jabado, Rima W; Rohner, Christoph A; March, Abi; Caprodossi, Simone; Henderson, Aaron C; Mair, James M; Ormond, Rupert; Pierce, Simon J

    2016-01-01

    Data on the occurrence of whale sharks, Rhincodon typus, in the Arabian Gulf and Gulf of Oman were collected by dedicated boat surveys and via a public-sightings scheme during the period from 2011 to 2014. A total of 422 individual whale sharks were photo-identified from the Arabian Gulf and the northern Gulf of Oman during that period. The majority of sharks (81%, n = 341) were encountered at the Al Shaheen area of Qatar, 90 km off the coast, with the Musandam region of Oman a secondary area of interest. At Al Shaheen, there were significantly more male sharks (n = 171) than females (n = 78; X2 = 17.52, P 9 m individuals were visually assessed as pregnant. Connectivity among sharks sighted in Qatari, Omani and UAE waters was confirmed by individual spot pattern matches. A total of 13 identified sharks were re-sighted at locations other than that at which they were first sighted, including movements into and out of the Arabian Gulf through the Strait of Hormuz. Maximum likelihood techniques were used to model an estimated combined population for the Arabian Gulf and Gulf of Oman of 2837 sharks ± 1243.91 S.E. (95% C.I. 1720-6295). The Al Shaheen aggregation is thus the first site described as being dominated by mature males while the free-swimming pregnant females are the first reported from the Indian Ocean.

  3. Danish Gulf War Veterans Revisited

    DEFF Research Database (Denmark)

    Nissen, Lars Ravnborg; Stoltenberg, Christian; Nielsen, Anni B Sternhagen

    2016-01-01

    OBJECTIVE: To examine the assumption that postdeployment incidence of sickness and other absence from work are higher among Gulf War Veterans compared with nonveterans. METHODS: A prospective registry study including a cohort of 721 Danish Gulf War Veterans and a control cohort of 3,629 nonveterans...... and nonveterans in the incidence rate of long-term sickness absence. After an initial short period (3 months) with elevated incidence rate of long-term absence from work among veterans, there was no difference between the cohorts. CONCLUSION: Among Danish Gulf War Veterans, no postdeployment increased risk...... outcomes and information on deployment history was studied using time-to-event analysis. The index date was the return date from the last deployment to the Gulf. The follow-up period was the time from index date until April 27, 2014. RESULTS: As the main finding, no difference was found between veterans...

  4. Long-term infrastructure forecasting in the Gulf of Mexico: a decision- and resource-based approach

    International Nuclear Information System (INIS)

    Kaiser, M.J.; Mesyanzhinov, D.V.; Pulsipher, A.G.

    2004-01-01

    A long-term infrastructure forecast in the Gulf of Mexico is developed in a disaggregated decision- and resource-based environment. Models for the installation and removal rates of structures are performed across five water depth categories for the Western and Central Gulf of Mexico planning areas for structures grouped according to a major and nonmajor classification. Master hydrocarbon production schedules are constructed per water depth and planning area using a two-parameter decision model, where 'bundled' resources are recoverable at a given time and at a specific rate. The infrastructure requirements to support the expected production is determined by extrapolating historical data. The analytic forecasting framework allows for subjective judgement, technological change, analogy, and historical trends to be employed in a user-defined manner. Special attention to the aggregation procedures employed and the general methodological framework are highlighted, including a candid discussion of the limitations of analysis and suggestions for further research

  5. Executive summary - Geologic assessment of coal in the Gulf of Mexico coastal plain, U.S.A.

    Science.gov (United States)

    Warwick, Peter D.; Warwick, Peter D.; Karlsen, Alexander K.; Merrill, Matthew D.; Valentine, Brett J.

    2011-01-01

    The National Coal Resource Assessment (NCRA) project of the U.S. Geological Survey (USGS) has assessed the quantity and quality of the nation's coal deposits that potentially could be mined during the next few decades. For eight years, geologic, geochemical, and resource information was collected and compiled for the five major coal-producing regions of the United States: the Appalachian Basin, Illinois Basin, Northern Rocky Mountains and Great Plains, Colorado Plateau, and the western part of the Gulf of Mexico Coastal Plain (Gulf Coast) region (Figure 1). In particular, the NCRA assessed resource estimates, compiled coal-quality information, and characterized environmentally sensitive trace elements, such as arsenic and mercury, that are mentioned in the 1990 Clean Air Act Amendments (U.S. Environmental Protection Agency, 1990). The results of the USGS coal assessment efforts may be found at: http://energy.cr.usgs.gov/coal/coal-assessments/index.html and a summary of the results from all assessment areas can be found in Ruppert et al. (2002) and Dennen (2009).Detailed assessments of the major coal-producing areas for the Gulf Coast region along with reviews of the stratigraphy, coal quality, resources, and coalbed methane potential of the Cretaceous, Paleocene, and Eocene coal deposits are presented in this report (Chapters 5-10).

  6. A new species of the ghost shrimp genus Lepidophthalmus (Crustacea: Decapoda: Axiidea) from the southwestern Gulf of Mexico.

    Science.gov (United States)

    Felder, Darryl L

    2015-07-13

    A new species of Lepidophthalmus lacking a ventral median sclerite on the second abdominal somite is described from coastal waters of the southwestern Gulf of Mexico. Lepidophthalmus statoni sp. nov., originally recognized only as a unique population in allozyme studies, is sympatric with the ventrally plated species Lepidophthalmus manningi Felder & Staton, 2000, but more closely resembles Lepidophthalmus louisianensis (Schmitt, 1935) from the northern and northwestern Gulf of Mexico. Apparently restricted to intertidal and shallow subtidal tropical waters, the new species is known to range from western Campeche to middle-upper reaches of Veracruz, Mexico. As many members of the genus, it commonly inhabits euryhaline inlets, estuaries, and protected shorelines, including richly organic muddy to clayey sands and sandy muds adjacent to shoreline vegetation. Coloration is documented and discussed as a tool to facilitate field identifications, as are morphological characters.

  7. Trophic and reproductive ecology of Red Snapper, Lutjanus campechanus, on natural and artificial reefs in the western Gulf of Mexico

    Science.gov (United States)

    Ajemian, M. J.; Wetz, J. J.; Brewton, R. A.; Downey, C. H.; Stunz, G. W.

    2016-02-01

    Energy exploration in the Gulf of Mexico (Gulf) has resulted in the addition of numerous oil and gas production rigs that have added structurally complex habitat to an area otherwise dominated by bare bottom. The impact of these artificial structures on fish populations is largely unknown and there is ongoing debate about their functionality. Red Snapper (Lutjanus campechanus), an ecologically and economically important sportfish to the region, use natural as well as the artificial reefs created by standing and reefed (toppled or cutoff) oil and gas rigs. However, little is known about how trophic and reproductive characteristics of Red Snapper vary over these multiple habitat types. We analyzed stable isotopic composition (δ13C, δ 15N) of epaxial muscle and compared reproductive potential of Red Snapper (155-855 mm TL) from standing rigs, reefed rigs, and natural hard-bottom habitats off Texas. Red Snapper from standing rig sites were isotopically enriched in δ 15N compared to lower relief habitats, suggesting they were feeding at a higher trophic level on standing rigs. While gonadosomatic indices (GSI) and comparative histology implied a similar spawning season among structure types, GSI was highest for both sexes at standing rigs. These initial results suggest that while standing rigs appear to provide more enriched food resources leading to higher Red Snapper reproductive capacity, the productivity of this species is similar between currently permitted rig decommissioning options (i.e., cutoff and toppled rigs) and natural hard-bottom habitats in the Gulf of Mexico.

  8. Forecasting lionfish sources and sinks in the Atlantic: are Gulf of Mexico reef fisheries at risk?

    Science.gov (United States)

    Johnston, Matthew W.; Bernard, Andrea M.; Shivji, Mahmood S.

    2017-03-01

    Invasive lionfish ( Pterois volitans/miles complex) now permeate the entire tropical western Atlantic, Caribbean Sea, and Gulf of Mexico, but lionfish abundance has been measured only in select locations in the field. Despite its rapid range expansion, a comprehensive meta-population analysis of lionfish `sources' and `sinks' and consequentially the invader's potential abundance and impacts on economically important, sympatric reef fishes have not been assessed. These data are urgently needed to spatially direct control efforts and to plan for and perhaps mitigate lionfish-caused damage. Here, we use a biophysical computer model to: (1) forecast larval lionfish sources and sinks that are also delineated as low to high lionfish `density zones' throughout their invaded range, and (2) assess the potential vulnerability of five grouper and snapper species— Epinephelus morio, Mycteroperca microlepis, Epinephelus flavolimbatus, Lutjanus campechanus, and Rhomboplites aurorubens—to lionfish within these density zones in the Gulf of Mexico. Our results suggest that the west Florida shelf and nearshore waters of Texas, USA, and Guyana, South America, function both as lionfish sources and sinks and should be a high priority for targeted lionfish control. Furthermore, of the five groupers and snappers studied, the high fishery value E. morio (red grouper) is the Gulf of Mexico species most at risk from lionfish. Lacking a comprehensive lionfish control policy, these risk exposure data inform managers where removals should be focused and demonstrate the risk to five sympatric native groupers and snappers in the Gulf of Mexico that may be susceptible to dense lionfish aggregations, should control efforts fail.

  9. Coastal sensitivity mapping of Gulf of Kachchh and Gulf of Cambay, India

    Digital Repository Service at National Institute of Oceanography (India)

    ManiMurali, R.; Boora, P.; Vethamony, P.

    and managers of coastal zones are also useful for identifying sensitive resources before a spill occurs (Jenson, 1998). In this way, protection priorities could be identified and established and cleanup strategies could be designed in advance. To deal... regions to oil spills. This research focuses on improving information about coastal environment mapping from remote sensing and GIS technology to generate maps of environmental sensitivity index for oil spill in Gulf of Kachchh and Gulf of Cambay...

  10. Passive acoustic monitoring of beaked whale densities in the Gulf of Mexico.

    Science.gov (United States)

    Hildebrand, John A; Baumann-Pickering, Simone; Frasier, Kaitlin E; Trickey, Jennifer S; Merkens, Karlina P; Wiggins, Sean M; McDonald, Mark A; Garrison, Lance P; Harris, Danielle; Marques, Tiago A; Thomas, Len

    2015-11-12

    Beaked whales are deep diving elusive animals, difficult to census with conventional visual surveys. Methods are presented for the density estimation of beaked whales, using passive acoustic monitoring data collected at sites in the Gulf of Mexico (GOM) from the period during and following the Deepwater Horizon oil spill (2010-2013). Beaked whale species detected include: Gervais' (Mesoplodon europaeus), Cuvier's (Ziphius cavirostris), Blainville's (Mesoplodon densirostris) and an unknown species of Mesoplodon sp. (designated as Beaked Whale Gulf - BWG). For Gervais' and Cuvier's beaked whales, we estimated weekly animal density using two methods, one based on the number of echolocation clicks, and another based on the detection of animal groups during 5 min time-bins. Density estimates derived from these two methods were in good general agreement. At two sites in the western GOM, Gervais' beaked whales were present throughout the monitoring period, but Cuvier's beaked whales were present only seasonally, with periods of low density during the summer and higher density in the winter. At an eastern GOM site, both Gervais' and Cuvier's beaked whales had a high density throughout the monitoring period.

  11. 77 FR 61605 - Notice of Proposed NPDES General Permit; Final NPDES General Permit for New and Existing Sources...

    Science.gov (United States)

    2012-10-10

    ... Gas Extraction Category for the Western Portion of the Outer Continental Shelf of the Gulf of Mexico... reporting requirements. EPA is working on an electronic notice of intent (eNOI) system so applicants will...; consistency with the Texas Coastal Management Program; and compliance with National Environmental Policy Act...

  12. Sedimentological imprint on subseafloor microbial communities in Western Mediterranean Sea Quaternary sediments

    Directory of Open Access Journals (Sweden)

    M.-C. Ciobanu

    2012-09-01

    Full Text Available An interdisciplinary study was conducted to evaluate the relationship between geological and paleoenvironmental parameters and the bacterial and archaeal community structure of two contrasting subseafloor sites in the Western Mediterranean Sea (Ligurian Sea and Gulf of Lion. Both depositional environments in this area are well-documented from paleoclimatic and paleooceanographic point of views. Available data sets allowed us to calibrate the investigated cores with reference and dated cores previously collected in the same area, and notably correlated to Quaternary climate variations. DNA-based fingerprints showed that the archaeal diversity was composed by one group, Miscellaneous Crenarchaeotic Group (MCG, within the Gulf of Lion sediments and of nine different lineages (dominated by MCG, South African Gold Mine Euryarchaeotal Group (SAGMEG and Halobacteria within the Ligurian Sea sediments. Bacterial molecular diversity at both sites revealed mostly the presence of the classes Alphaproteobacteria, Betaproteobacteria and Gammaproteobacteria within Proteobacteria phylum, and also members of Bacteroidetes phylum. The second most abundant lineages were Actinobacteria and Firmicutes at the Gulf of Lion site and Chloroflexi at the Ligurian Sea site. Various substrates and cultivation conditions allowed us to isolate 75 strains belonging to four lineages: Alpha-, Gammaproteobacteria, Firmicutes and Actinobacteria. In molecular surveys, the Betaproteobacteria group was consistently detected in the Ligurian Sea sediments, characterized by a heterolithic facies with numerous turbidites from a deep-sea levee. Analysis of relative betaproteobacterial abundances and turbidite frequency suggested that the microbial diversity was a result of main climatic changes occurring during the last 20 ka. Statistical direct multivariate canonical correspondence

  13. 77 FR 67303 - Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic; Reef Fish Fishery of the Gulf of...

    Science.gov (United States)

    2012-11-09

    ... interim measures to reduce overfishing of gray triggerfish in the Gulf of Mexico (Gulf) implemented by a... rule is to reduce overfishing of the gray triggerfish resource in the Gulf while the Council develops... necessary, to reduce overfishing. On April 19, 2012, the Council requested that NMFS implement a temporary...

  14. 75 FR 38452 - Fisheries of the Exclusive Economic Zone Off Alaska; Central Gulf of Alaska License Limitation...

    Science.gov (United States)

    2010-07-02

    ... for the Southeast Outside District (SEO), Central Gulf of Alaska which includes the West Yakutat...). This proposed action does not include modifications to SEO endorsed licenses because fishing in this...

  15. Behavior and trends for Zn in Saronikos Gulf

    Directory of Open Access Journals (Sweden)

    Chalkiadakis O.

    2013-04-01

    Full Text Available The study of Zn in the water column of Saronikos Gulf in Greece during a two year period between 2008 and 2010 added data to the available time series of metal data for this marine area since 1985. The Saronikos Gulf, is directly influenced by the Athens metropolitan area. The operation of the Wastewater Treatment Plant of Athens situated on the small island of Psitalia, in 1995, was considered to be the turning point in the efforts of de-pollution of the gulf. Major sources of pollution for the gulf include also the port of Piraeus, with intensive navigation and shipping activities and the significant industrial activity occurring along the coast of Attica. This study of dissolved and particulate Zn gave results consistent with previous studies of the area such as the prevalence of the dissolved form of Zn and the most affected areas being the smaller most enclosed Gulf of Elefsina and Psitalia Island near the wastewater outfall. However, the concentrations of Zn were below toxic levels for marine aquatic organisms. Furthermore, a clear decrease in the Eastern part of the gulf was exhibited as well as a more subtle decrease in the gulf of Elefsina. The levels of Zn in Saronikos Gulf were found comparable to those of other Greek coastal areas.

  16. 75 FR 21512 - Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic; Reef Fish Fishery of the Gulf of...

    Science.gov (United States)

    2010-04-26

    ...: NMFS issues this final rule to implement Amendment 31 to the Fishery Management Plan for the Reef Fish Resources of the Gulf of Mexico (FMP) prepared by the Gulf of Mexico Fishery Management Council (Council... operation of the bottom longline component of the reef fish fishery in the eastern Gulf while maintaining...

  17. Assessment of heavy metals pollution in bottom sediments of the Arabian Gulf after the Gulf War oil spill 1991

    International Nuclear Information System (INIS)

    Nasr, S.M.; Ahmed, M.H.; El-Raey, M.; Frihy, O.E.; Abdel Motti, A.

    1999-01-01

    The major objective of this study was to carry out a sequential geochemical extraction scheme for the partitioning of Fe, Mn, Co, Cu, Zn, Ni, Cr and Pb in the bottom sediments of the Arabian Gulf to detect any potential pollution impact on the gulf sediments following the 1991 gulf war oil spill, and to differentiate between anthropogenic inputs and natural background of heavy metals

  18. From continental to oceanic rifting in the Gulf of California

    Science.gov (United States)

    Ferrari, Luca; Bonini, Marco; Martín, Arturo

    2017-11-01

    The continental margin of northwestern Mexico is the youngest example of the transition from a convergent plate boundary to an oblique divergent margin that formed the Gulf of California rift. Subduction of the Farallon oceanic plate during the Cenozoic progressively brought the East Pacific Rise (EPR) toward the North America trench. In this process increasingly younger and buoyant oceanic lithosphere entered the subduction zone until subduction ended just before most of the EPR could collide with the North America continental lithosphere. The EPR segments bounding the unsubducted parts of the Farallón plate remnants (Guadalupe and Magdalena microplates) also ceased spreading (Lonsdale, 1991) and a belt of the North American plate (California and Baja California Peninsula) became coupled with the Pacific Plate and started moving northwestward forming the modern Gulf of California oblique rift (Nicholson et al., 1994; Bohannon and Parsons, 1995). The timing of the change from plate convergence to oblique divergence off western Mexico has been constrained at the middle Miocene (15-12.5 Ma) by ocean floor morphology and magnetic anomalies as well as plate tectonic reconstructions (Atwater and Severinghaus, 1989; Stock and Hodges, 1989; Lonsdale, 1991), although the onset of transtensional deformation and the amount of right lateral displacement within the Gulf region are still being studied (Oskin et al., 2001; Fletcher et al., 2007; Bennett and Oskin, 2014). Other aspects of the formation of the Gulf of California remain not well understood. At present the Gulf of California straddles the transition from continental transtension in the north to oceanic spreading in the south. Seismic reflection-refraction data indicate asymmetric continent-ocean transition across conjugate margins of rift segments (González-Fernández et al., 2005; Lizarralde et al., 2007; Miller and Lizarralde, 2013; Martín-Barajas et al., 2013). The asymmetry may be related to crustal

  19. Tectono-sedimentary events and geodynamic evolution of the Mesozoic and Cenozoic basins of the Alpine Margin, Gulf of Tunis, north-eastern Tunisia offshore

    Science.gov (United States)

    Melki, Fetheddine; Zouaghi, Taher; Chelbi, Mohamed Ben; Bédir, Mourad; Zargouni, Fouad

    2010-09-01

    The structural pattern, tectono-sedimentary framework and geodynamic evolution for Mesozoic and Cenozoic deep structures of the Gulf of Tunis (north-eastern Tunisia) are proposed using petroleum well data and a 2-D seismic interpretation. The structural system of the study area is marked by two sets of faults that control the Mesozoic subsidence and inversions during the Paleogene and Neogene times: (i) a NE-SW striking set associated with folds and faults, which have a reverse component; and (ii) a NW-SE striking set active during the Tertiary extension episodes and delineating grabens and subsiding synclines. In order to better characterize the tectono-sedimentary evolution of the Gulf of Tunis structures, seismic data interpretations are compared to stratigraphic and structural data from wells and neighbouring outcrops. The Atlas and external Tell belonged to the southernmost Tethyan margin record a geodynamic evolution including: (i) rifting periods of subsidence and Tethyan oceanic accretions from Triassic until Early Cretaceous: we recognized high subsiding zones (Raja and Carthage domains), less subsiding zones (Gamart domain) and a completely emerged area (Raouad domain); (ii) compressive events during the Cenozoic with relaxation periods of the Oligocene-Aquitanian and Messinian-Early Pliocene. The NW-SE Late Eocene and Tortonian compressive events caused local inversions with sealed and eroded folded structures. During Middle to Late Miocene and Early Pliocene, we have identified depocentre structures corresponding to half-grabens and synclines in the Carthage and Karkouane domains. The north-south contractional events at the end of Early Pliocene and Late Pliocene periods are associated with significant inversion of subsidence and synsedimentary folded structures. Structuring and major tectonic events, recognized in the Gulf of Tunis, are linked to the common geodynamic evolution of the north African and western Mediterranean basins.

  20. All-Cause Mortality Among US Veterans of the Persian Gulf War

    Science.gov (United States)

    Kang, Han K.; Bullman, Tim

    2016-01-01

    Objective: We determined cause-specific mortality prevalence and risks of Gulf War deployed and nondeployed veterans to determine if deployed veterans were at greater risk than nondeployed veterans for death overall or because of certain diseases or conditions up to 13 years after conflict subsided. Methods: Follow-up began when the veteran left the Gulf War theater or May 1, 1991, and ended on the date of death or December 31, 2004. We studied 621   901 veterans who served in the 1990-1991 Persian Gulf War and 746   247 veterans who served but were not deployed during the Gulf War. We used Cox proportional hazard models to calculate rate ratios adjusted for age at entry to follow-up, length of follow-up, race, sex, branch of service, and military unit. We compared the mortality of (1) Gulf War veterans with non–Gulf War veterans and (2) Gulf War army veterans potentially exposed to nerve agents at Khamisiyah in March 1991 with those not exposed. We compared standardized mortality ratios of deployed and nondeployed Gulf War veterans with the US population. Results: Male Gulf War veterans had a lower risk of mortality than male non–Gulf War veterans (adjusted rate ratio [aRR] = 0.97; 95% confidence interval [CI], 0.95-0.99), and female Gulf War veterans had a higher risk of mortality than female non–Gulf War veterans (aRR = 1.15; 95% CI, 1.03-1.28). Khamisiyah-exposed Gulf War army veterans had >3 times the risk of mortality from cirrhosis of the liver than nonexposed army Gulf War veterans (aRR = 3.73; 95% CI, 1.64-8.48). Compared with the US population, female Gulf War veterans had a 60% higher risk of suicide and male Gulf War veterans had a lower risk of suicide (standardized mortality ratio = 0.84; 95% CI, 0.80-0.88). Conclusion: The vital status and mortality risk of Gulf War and non–Gulf War veterans should continue to be investigated. PMID:28123229

  1. 75 FR 74650 - Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic; Reef Fish Fishery of the Gulf of...

    Science.gov (United States)

    2010-12-01

    ... issues this final temporary rule to implement interim measures to reduce overfishing of gag in the Gulf... this final temporary rule is to reduce overfishing of the gag resource in the Gulf. DATES: This rule is... rule is to reduce overfishing of the gag resource in the Gulf. No changes were made to this final rule...

  2. Western Canada : changing pricing dynamics

    International Nuclear Information System (INIS)

    Frank, B.

    1998-01-01

    Natural gas supply and demand trends in Western Canada are reviewed in a series of overhead viewgraphs. Production versus pipeline capacity, required gas well completions in the WCSB to meet local demand and fill export pipeline capacity to year 2005, NYMEX and AECO price trends during 1995-2000, and the question of what will happen to prices with additional pipeline capacity to the U.S. Midwest were summarized. The best guess is that Midwest prices will need to be high enough to attract marginal supplies from the Gulf, i.e. prices have be around the Henry Hub + five cents/ mmbtu. The new Canadian pipelines, (Northern Border and Alliance) will lower Midwest prices somewhat, but the impact will be modest. Assuming that additional planned pipeline expansion come on-stream, the pressure to expand east of Chicago will be considerable. tabs., figs

  3. Curcumin Nanoparticle Therapy for Gulf War Illness

    Science.gov (United States)

    2017-10-01

    AWARD NUMBER: W81XWH-16-1-0480 TITLE: Curcumin Nanoparticle Therapy for Gulf War Illness PRINCIPAL INVESTIGATOR: Ashok K. Shetty, Ph.D...Nanoparticle Therapy for Gulf War Illness 5a. CONTRACT NUMBER 5b. GRANT NUMBER W81XWH-16-1-0480 5c. PROGRAM ELEMENT NUMBER 6. AUTHOR(S) Ashok K...biodegradable polymer nanosystems (nCUR) for alleviating cognitive, memory and mood impairments in a rat model of gulf war illness (GWI). Specific

  4. Application of SWAN+ADCIRC to tide-surge and wave simulation in Gulf of Maine during Patriot's Day storm

    Directory of Open Access Journals (Sweden)

    Dong-mei Xie

    2016-01-01

    Full Text Available The southern coast of the Gulf of Maine in the United States is prone to flooding caused by nor'easters. A state-of-the-art fully-coupled model, the Simulating WAves Nearshore (SWAN model with unstructured grids and the ADvanced CIRCulation (ADCIRC model, was used to study the hydrodynamic response in the Gulf of Maine during the Patriot's Day storm of 2007, a notable example of nor'easters in this area. The model predictions agree well with the observed tide-surges and waves during this storm event. Waves and circulation in the Gulf of Maine were analyzed. The Georges Bank plays an important role in dissipating wave energy through the bottom friction when waves propagate over the bank from offshore to the inner gulf due to its shallow bathymetry. Wave energy dissipation results in decreasing significant wave height (SWH in the cross-bank direction and wave radiation stress gradient, which in turn induces changes in currents. While the tidal currents are dominant over the Georges Bank and in the Bay of Fundy, the residual currents generated by the meteorological forcing and waves are significant over the Georges Bank and in the coastal area and can reach 0.3 m/s and 0.2 m/s, respectively. In the vicinity of the coast, the longshore current generated by the surface wind stress and wave radiation stress acting parallel to the coastline is inversely proportional to the water depth and will eventually be limited by the bottom friction. The storm surge level reaches 0.8 m along the western periphery of the Gulf of Maine while the wave set-up due to radiation stress variation reaches 0.2 m. Therefore, it is significant to coastal flooding.

  5. Too many eggs in one basket? US Gulf coast and Gulf of Mexico risks not just technical

    International Nuclear Information System (INIS)

    Skinner, R.

    2006-01-01

    The reasons behind the waning gas supply in North America were discussed. Gas prices in North America are currently 3 times higher than they were in 1990. Although there are twice as many rigs, drilling twice as many wells, 5 to 20 per cent deeper, they are finding one third less recoverable gas than in 1990. It was emphasized that the continental gas supply system is vulnerable to upsets in much the same way that the global surplus oil production capacity was affected by upsets. North America has relied on 2 major basins to supply two thirds of its gas. These include the Western Canada Sedimentary Basin as well as the region encompassing the Gulf of Mexico, southern Texas and Louisiana. Both major basins are in rapid decline. In addition, hurricanes in the Gulf of Mexico have increased in both intensity and frequency, ensuing damage to oil and gas infrastructure and dislocating the continent's gas system. This trend is expected to continue and the periodic advisory reports from the National Petroleum Council indicate an austere future for gas supply and demand, with a reliance on difficult, remote, uncertain and costly supplies. The economy, energy consumption, storage, supply and weather are all factors that contribute to the rising gas prices in North America. The author claimed that North American gas supply has been and continues to be constrained by misguided policies. Given the decline in the main supply basins, gas supply is expected to remain tight barring weaker gross domestic product (GDP). It was emphasized that weather-dominated North American gas markets will increasingly affect the rest of the world, including Europe which has its own gas supply concerns and which is increasingly linked to North America's gas supply problem. figs

  6. Study of the particulate matter transfer and dumping using 210 Po et le 210 Pb. Application to the Gulf of Biscary (NE Atlantic Ocean) and the Gulf of Lion (NW Mediterranean Sea) continental margins

    International Nuclear Information System (INIS)

    Radakovitch, O.

    1995-01-01

    210 Po and 210 Pb activities and fluxes were measured on seawater, sediment-trapped material collected during one year and sediment. Focalization of 210 Pb is clearly noticed on the Cap-Ferret canyon (Gulf of Biscary) and the Lacaze-Duthiers canyon (western part of the Gulf of Lion). In both sites, 210 Pb fluxes in traps and sediment are always higher than 210 Pb flux available from atmospheric and in situ production. On the contrary, Grand-Rhone canyon and its adjacent open slope exhibit a 210 Pb budget near equilibrium in the near-bottom sediment traps, but focalization is important in the sediment. For the entire Gulf of Lion margin, focalization of 210 Pb in the sediment occurred principally between 500 and 1500 m water depth on the slope, and on the middle shelf mud-patch. 210 Po and 210 Pb have been used in the Cap Ferret and Grand-Rhone canyons to characterize the origin of the particulate trapped material. Two main sources feed the water column. The first source, localized in surface waters, is constituted by biogenic particles from primary production and lithogenic material. The second source, deeper, is due to resuspension at the shelf break and/or on the open slope. In each site, 210 Po and 210 Pb activities of the trapped particles did not show any relations with the major constituents. Quantity of particles appeared to be the main factor regulating adsorption processes of these nuclides. Sedimentation rates based on 210 Po profiles decreased with increasing water depth, from 0.4 ti 0.06 cm y-1 on the Cap Ferret canyon (400 to 3000 m water depth) and from 0.5 to 0.05 cm y-1 for the entire Gulf of Lion margin (50 to 2000 m water depth). (author)

  7. Apristurus breviventralis, a new species of deep-water catshark (Chondrichthyes: Carcharhiniformes: Scyliorhinidae) from the Gulf of Aden.

    Science.gov (United States)

    Kawauchi, Junro; Weigmann, Simon; Nakaya, Kazuhiro

    2014-11-03

    A new deep-water catshark of the genus Apristurus Garman, 1913 is described based on nine specimens from the Gulf of Aden in the northwestern Indian Ocean. Apristurus breviventralis sp. nov. belongs to the 'brunneus group' of the genus and is characterized by having pectoral-fin tips reaching beyond the midpoint between the paired fin bases, a much shorter pectoral-pelvic space than the anal-fin base, a low and long-based anal fin, and a first dorsal fin located behind pelvic-fin insertion. The new species most closely resembles the western Atlantic species Apristurus canutus, but is distinguishable in having greater nostril length than internarial width and longer claspers in adult males. Apristurus breviventralis sp. nov. represents the sixth species of Apristurus from the western Indian Ocean and the 38th species globally. 

  8. Sandwaves of the Gulf of Khambhat

    Digital Repository Service at National Institute of Oceanography (India)

    Vora, K.H.; Gujar, A.R.; Karisiddaiah, S.M.

    In the Gulf of Khambhat (Gujarat, India) the best formed sandwaves are seen in the west close to the Eastern Sand Bank. With increasing clay content and clay cover of the sea bed, the sandwaves become poorly formed. In the southern part of the Gulf...

  9. The Influence of Shariah (Islamic Principles) Corporate Governance on Cross-Border Merger and Acquisitions Involving Islamic Companies in the Gulf Countries

    OpenAIRE

    Bindabel, Wardah Abdulrahman

    2017-01-01

    The central aim of the research is to examine whether cross-border Merger and Acquisitions (M&A) involving Islamic financial companies in three Gulf countries and non-Islamic financial companies from the Western countries is influenced by Shariah Corporate Governance (CG). Cross-border M&A is a corporate level strategy to achieve organisational growth and expansion through accessing new markets and additional strategic resources (knowledge, technology and complementary skills). Islamic financ...

  10. Gulf of Mexico production still recovering

    International Nuclear Information System (INIS)

    Koen, A.D.

    1992-01-01

    This paper reports that the extent of damage caused by Hurricane Andrew to Gulf of Mexico oil and gas installations continues coming into focus. A preliminary tally by Minerals Management Service offers a reasonably complete summary of gulf production and pipeline systems damage detectable at the surface. MMS requires Outer Continental Shelf operators to inspect for underwater damage all platforms, pipelines, risers, and other structures within an 85 mile corridor along the path of Andrew's eye as it churned through the gulf. OCS operators have until Oct. 16 to submit plans for the Level II surveys

  11. Near-surface distribution of radium in the Gulf of Mexico and Caribbean Sea: temporal and spatial variability and hydrographic relationships

    International Nuclear Information System (INIS)

    Reid, D.F.

    1979-01-01

    Only a few radium measurements have been made in the near-surface (0-600m) Gulf of Mexico and Caribbean Sea. Published 228 Ra data from 1968 and 1973 reveal a significant increase of 228 Ra activity in the near-surface Gulf of Mexico. The increase has been attributed to factors affecting the water prior to its entry into the Caribbean-Gulf system. It has been proposed that 228 Ra can be used to study thermocline mixing rates, but few detailed studies have been made to test the validity of this hypothesis. Physical oceanographic evidence indicates that vertical mixing significantly impacts the upper 100 to 150 meters of the water column in the Gulf of Mexico. This dissertation reports and discusses the results of 123 measurements of the 228 Ra: 226 Ra activity ratio (radium activity ratio), and 73 measurements of 226 Ra in the 1975-1976 near-surface water columns of the Gulf of Mexico and Caribbean Sea. 228 Ra activities are calculated from the activity ratio and 226 Ra data

  12. 76 FR 20957 - Gulf of Mexico Fishery Management Council; Public Meeting

    Science.gov (United States)

    2011-04-14

    ... exceeded for Gulf group king mackerel, Gulf group Spanish mackerel, and Gulf group cobia. It also contains... framework procedure, and separate cobia into Atlantic and Gulf migratory groups. Similar measures are being...

  13. Geothermal and seismic evidence for a southeastern continuation of the three pagodas fault zone into the Gulf of Thailand

    Directory of Open Access Journals (Sweden)

    Prinya Putthapiban

    2012-09-01

    Full Text Available Aerial photographic maps and landsat image interpretations suggest the major fault segments of the Three PagodaFault (TPF Zone and Sri Swat Fault (SSF Zone are oriented parallel or sub-parallel in the same NW-SE directions. The KwaeNoi River is running along the TPF in the south whereas the Kwae Yai River is running along the SSF in the north. Thesoutheastern continuation of both faults is obscured by thick Cenozoic sediments. Hence, surface lineaments cannot betraced with confidence. However, based on some interpretations of the airborne magnetic survey data, the trace of such faultsare designated to run through the western part of Bangkok and the northern end of the Gulf of Thailand. Paleo-earthquakesand the presence of hot springs along the fault zones indicate that they are tectonically active. The changes of both physicaland chemical properties of the water from Hin Dart Hot Spring and those of the surface water from a shallow well at Ban KhaoLao during the Great Sumatra–Andaman Earthquake on 26th of December 2004 clearly indicated that the southeastern continuation of the TPF is at least as far south as Pak Tho District, Ratburi. Our new evidence of the alignment of the high heatflow in the upper part of the Gulf of Thailand verified that the TPF also extend into the Gulf via Samut Songkhram Province.Studies of the seismic data from two survey lines along the Western part of the upper Gulf of Thailand acquired by BritoilPlc. in 1986, namely Line A which is approximately 60 km long, starting from Bang Khen passing through Bang Khae andending in Samut Songkhram and Line B is approximately 30 km long starting from Samut Sakon ending in Samut Song Khramsuggest that all the faults or fractures along these seismic profiles are covered by sediments of approximately 230 m thickwhich explain that the fault underneath these seismic lines is quite old and may not be active. The absent of sign or trace ofthe TPF Path to the west suggested that there

  14. Organchlorine content and shell thickness in brown booby (Sula leucogaster) eggs in the Gulf of California and the southern Pacific coast of Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Mellink, Eric, E-mail: emellink@cicese.m [Departamento de Biologia de la Conservacion, Centro de Investigacion Cientifica y de Educacion Superior de Ensenada, B.C. Carretera Tijuana-Ensenada Km. 107, 22860 Ensenada, B.C. (Mexico); Riojas-Lopez, Monica E., E-mail: meriojas@cucba.udg.m [Departamento de Ecologia, Centro Universitario de Ciencias Biologicas y Agropecuarias, Universidad de Guadalajara, Km. 15.5 Carretera a Nogales, 45100 Zapopan, Jalisco (Mexico); Luevano-Esparza, Jaime, E-mail: jluevano@cicese.m [Departamento de Biologia de la Conservacion, Centro de Investigacion Cientifica y de Educacion Superior de Ensenada, B.C. Carretera Tijuana-Ensenada Km. 107, 22860 Ensenada, B.C. (Mexico)

    2009-07-15

    We determined egg concentrations of organochlorines and thickness of eggshells from brown boobies at eight colonies ranging from the northern Gulf of California to southern Mexico. The only common residue was that of DDE, which was found in almost all eggs. DDE content apparently reflected pre-1990 DDT use in nearby agricultural areas and, at one site, intensive mosquito control for high-end tourism development. There were no inter-colony differences in eggshell thickness, and variation in this variable likely reflected individual bird characteristics and/or individual feeding source. This variable was not a good proxy to DDE exposure of brown boobies, under current DDE levels in the brown booby trophic chain. In the northern Gulf of California, eggshell thickness has recovered to pre-DDT conditions. Our data indicate that the Gulf of California and southwestern coast of Mexico have a healthy near-shore marine environment, as far as organochlorines are concerned. - Wide-range, current picture of organochlorine presence in the environment along the western coast of Mexico.

  15. Organchlorine content and shell thickness in brown booby (Sula leucogaster) eggs in the Gulf of California and the southern Pacific coast of Mexico

    International Nuclear Information System (INIS)

    Mellink, Eric; Riojas-Lopez, Monica E.; Luevano-Esparza, Jaime

    2009-01-01

    We determined egg concentrations of organochlorines and thickness of eggshells from brown boobies at eight colonies ranging from the northern Gulf of California to southern Mexico. The only common residue was that of DDE, which was found in almost all eggs. DDE content apparently reflected pre-1990 DDT use in nearby agricultural areas and, at one site, intensive mosquito control for high-end tourism development. There were no inter-colony differences in eggshell thickness, and variation in this variable likely reflected individual bird characteristics and/or individual feeding source. This variable was not a good proxy to DDE exposure of brown boobies, under current DDE levels in the brown booby trophic chain. In the northern Gulf of California, eggshell thickness has recovered to pre-DDT conditions. Our data indicate that the Gulf of California and southwestern coast of Mexico have a healthy near-shore marine environment, as far as organochlorines are concerned. - Wide-range, current picture of organochlorine presence in the environment along the western coast of Mexico.

  16. Gulf of Mexico deep-water

    International Nuclear Information System (INIS)

    Ott, G.L.

    1998-01-01

    The deepwater Gulf of Mexico, an emerging basin with 20 BBOE resource potential, was discussed. Technologies are advancing and development options are increasing within the Gulf of Mexico deepwater environment. Deepwater offers significant rate potentials leading to strong cash flows. The projected steep rate of resources captured in the next five years show that there is a short window of opportunity to establish a business position. The major production variables are development costs and cycle time. There is a definite market for Gulf of Mexico products because U.S. energy demand is expected to outstrip U.S. supply. Present infrastructure is capable of moving large volumes of gas into major U.S. markets, but with the large number of projects currently underway, especially in the United States, supply could exceed capacity. 1 tab., 16 figs

  17. Probiotic (VSL 3) for Gulf War Illness

    Science.gov (United States)

    2016-10-01

    Award Number: W81XWH-10-1-0593 TITLE: Probiotic (VSL#3) for Gulf War Illness. PRINCIPAL INVESTIGATOR: Ashok Tuteja, M.D. M.P.H. CONTRACTING...NUMBER Probiotic (VSL#3) for Gulf War Illness. 5b. GRANT NUMBER W81XWH-10-1-0593 5c. PROGRAM ELEMENT NUMBER 6 . AUTHOR(S) 5d. PROJECT NUMBER Ashok...intestinal symptoms (fatigue, joint pain, insomnia, general stiffness and headache) associated with IBS. All of these symptoms are part of the Gulf War

  18. Gulf of Mexico development

    International Nuclear Information System (INIS)

    Krenz, D.

    1998-01-01

    In recent years, the Gulf of Mexico (GOM) has seen significant deepwater growth. An overview of the GOM deepwater leaseholds by Shell and developments by competing companies is presented. Deepwater GOM developments, total production from the shelf and from deepwater wells, new offshore pipeline capacity and ownership, and processing plant capacity are also discussed. Significant deepwater growth in the Gulf is anticipated. Despite significant economic and technological challenges, the area is judged to be the prime exploration and production opportunity in the lower 48 states of the USA. tabs., figs

  19. Application of SWAN+ADCIRC to tide-surge and wave simulation in Gulf of Maine during Patriot’s Day storm

    Directory of Open Access Journals (Sweden)

    Dong-mei Xie

    2016-01-01

    Full Text Available The southern coast of the Gulf of Maine in the United States is prone to flooding caused by nor’easters. A state-of-the-art fully-coupled model, the Simulating WAves Nearshore (SWAN model with unstructured grids and the ADvanced CIRCulation (ADCIRC model, was used to study the hydrodynamic response in the Gulf of Maine during the Patriot’s Day storm of 2007, a notable example of nor’easters in this area. The model predictions agree well with the observed tide-surges and waves during this storm event. Waves and circulation in the Gulf of Maine were analyzed. The Georges Bank plays an important role in dissipating wave energy through the bottom friction when waves propagate over the bank from offshore to the inner gulf due to its shallow bathymetry. Wave energy dissipation results in decreasing significant wave height (SWH in the cross-bank direction and wave radiation stress gradient, which in turn induces changes in currents. While the tidal currents are dominant over the Georges Bank and in the Bay of Fundy, the residual currents generated by the meteorological forcing and waves are significant over the Georges Bank and in the coastal area and can reach 0.3 m/s and 0.2 m/s, respectively. In the vicinity of the coast, the longshore current generated by the surface wind stress and wave radiation stress acting parallel to the coastline is inversely proportional to the water depth and will eventually be limited by the bottom friction. The storm surge level reaches 0.8 m along the western periphery of the Gulf of Maine while the wave set-up due to radiation stress variation reaches 0.2 m. Therefore, it is significant to coastal flooding.

  20. PSI Analysis of Ground Deformations Along the South-Western Coast of the Gulf of Gdansk (Poland)

    Science.gov (United States)

    Czarnogorska, Magdalena; Graniczny, Marek; Uscinowicz, Szymon; Nutricato, Raffaele; Triggiani, Saverio; Nitti, David Oscar; Bovenga, Fabio; Wasowski, Janusz

    2010-03-01

    We use over 40 descending ERS-1/2 SLC (Frame = 2511 , Track = 36) images from the period 1995 - 2001 and the SPINUA (Stable Point Interferometry over Un- urbanised Areas) Persistent Scatterers Interferometry (PSI) processing technique to study Earth surface deformations along the SW coast of the Gulf of Gdansk, along the SE part of the Baltic Sea.The area of interest (AOI) includes few cities and several towns, villages and harbours. The low lying coastal areas of the SW part of the Gulf of Gdansk are at risk of floods and marine erosion. It is expected that this problem can be exacerbated by the ongoing sea level rise and possibly by crustal movements (subsidence) reported in the literature.The PSI results, however, did not reveal the presence of a regional scale, spatially consistent pattern of displacements. It is likely that any crustal deformations in the AOI simply do not exceed +-2 mm/year, which is the velocity threshold we assumed to distinguish between moving and non-moving radar targets. Nevertheless, significant downward displacements, amounting to several mm/year, are locally present in the coastal zone east of Gdansk that belongs to the Vistula river delta-alluvial plain system, as well as in the inland area west of the cities of Gdansk and Sopot. It is apparent that in all these cases the movements reflect mainly differential settlements of buildings and engineering infrastructure, which have recently been built in the areas including clay-rich, compressible sediments. Indeed, one of the highest subsidence rates (- 12 mm/year) was observed in the Gdansk petroleum refinery constructed on alluvial sediments. Thus the anthropogenic loading and consolidation of the recent deposits can locally be an important factor causing ground settlements. Importantly, for the most part the urban areas of the main cities (Gdansk, Gdynia and Sopot) result to be stable.

  1. 76 FR 65321 - Gulf War Veterans' Illnesses Task Force

    Science.gov (United States)

    2011-10-20

    ... DEPARTMENT OF VETERANS AFFAIRS Gulf War Veterans' Illnesses Task Force AGENCY: Department of... Veterans Affairs (VA) established the Gulf War Veterans' Illnesses Task Force (GWVI-TF) in August 2009 to conduct a comprehensive review of VA's approach to and programs addressing 1990-1991 Gulf War Veterans...

  2. 78 FR 28292 - Gulf War Veterans' Illnesses Task Force

    Science.gov (United States)

    2013-05-14

    ... DEPARTMENT OF VETERANS AFFAIRS Gulf War Veterans' Illnesses Task Force AGENCY: Department of... Veterans Affairs (VA) established the Gulf War Veterans' Illnesses Task Force (GWVI-TF) in August 2009 to conduct a comprehensive review of VA's approach to and programs addressing 1990-1991 Gulf War Veterans...

  3. 75 FR 16577 - Gulf War Veterans' Illnesses Task Force

    Science.gov (United States)

    2010-04-01

    ... DEPARTMENT OF VETERANS AFFAIRS Gulf War Veterans' Illnesses Task Force AGENCY: Department of... Veterans Affairs (VA) established the Gulf War Veterans' Illnesses Task Force (GWVI-TF) in August 2009 to conduct a comprehensive review of VA's approach to and programs addressing 1990-1991 Gulf War Veterans...

  4. Recent crustal movements and seismicity in the western coastal region of peninsular India

    Science.gov (United States)

    Kailasam, L. N.

    1983-09-01

    Recent crustal movements, tectonics and seismicity of the western coastal region of peninsular India have been studied in detail in the very recent past. Prominent geomorphic features and large-scale manifestation of Holocene deformation and crustal movements have been noticed and studied over this coastal region from the Gulf of Cambay to the southernmost parts of Kerala, evidence for which is afforded in the form of Recent and sub-Recent raised beaches, sandbars, raised old terraces, pebble beds, etc. The sedimentary formations in this narrow coastal belt include Neogene and Quaternary sediments. The Bouguer gravity map of the western coastal tract shows some prominent gravity features extending into the offshore regions, suggestive of some significant tectonic and structural features. The seismic data in the offshore regions bring out some prominent roughly northwest-southeast as well as east-west faults and shears, in addition to prominent structural "highs" off the Bombay and Ratnagiri coast which have proved oil. The seismicity in this coastal tract as well as the faulted western margin of the western continental shelf in the Arabian Sea is generally of magnitude 3-6.

  5. 50 CFR 226.214 - Critical habitat for Gulf sturgeon.

    Science.gov (United States)

    2010-10-01

    ... ATMOSPHERIC ADMINISTRATION, DEPARTMENT OF COMMERCE MARINE MAMMALS DESIGNATED CRITICAL HABITAT § 226.214... Sound or the Gulf of Mexico. The Withlacoochee River main stem from Florida State Road 6, Madison and...) Unit 11: Florida Nearshore Gulf of Mexico Unit in Escambia, Santa Rosa, Okaloosa, Walton, Bay, and Gulf...

  6. Genetic differentiation of the Kittlitz's Murrelet Brachyramphus brevirostris in the Aleutian Islands and Gulf of Alaska

    Science.gov (United States)

    Birt, T.P.; Mackinnon, D.; Piatt, John F.; Friesen, Vicki L.

    2011-01-01

    Information about the distribution of genetic variation within and among local populations of the Kittlitz's Murrelet Brachyramphus brevirostris is needed for effective conservation of this rare and declining species. We compared variation in a 429 base pair fragment of the mitochondrial control region and 11 microsatellite loci among 53 Kittlitz's Murrelets from three sites in the western Aleutian Islands (Attu Island) and Gulf of Alaska (Glacier Bay and Kachemak Bay). We found that birds in these two regions differ genetically in three assessments: (1) global and pairwise indices of genetic differentiation were significantly greater than zero, (2) mitochondrial haplotypes differed by a minimum of nine substitutions, and (3) molecular assignments indicated little gene flow between regions. The data suggest that birds in these regions have been genetically isolated for an extended period. We conclude that Kittlitz's Murrelets from Attu Island and from the Gulf of Alaska represent separate evolutionarily significant units, and should be treated as such for conservation. Genetic data for Kittlitz's Murrelets from the remainder of the breeding range are urgently needed.

  7. Plutonium in the Gulf of Mexico

    International Nuclear Information System (INIS)

    Scott, M.R.; Salter, P.F.

    The geochemistry of fallout plutonium in the sediments of the Gulf of Mexico was studied. A series of sediment cores was collected in a traverse from the deep Gulf of Mexico to the Mississippi Delta. The cores were sliced into 1 cm intervals and analyzed for plutonium. Explanations for the variations in concentration are presented

  8. Water masses in the Gulf of Aden

    Digital Repository Service at National Institute of Oceanography (India)

    Al Saafani, M.A.; Shenoi, S.S.C.

    Hydrographic data collected from Gulf of Aden since 1920 have been compiled to identify and refine the definitions of water masses in the Gulf of Aden (GA) and to describe their spatio-temporal variability. Four water masses have been identified...

  9. Fishery potential of the Gulf of Kachchh

    Digital Repository Service at National Institute of Oceanography (India)

    Nair, V.R.; Govindan, K.; Ramaiah, Neelam; Gajbhiye, S.N.

    Fishery potential of the interior Gulf of Kachchh and adjacent creek regions was reported for the first time as baseline data for future ecological assessment. The experimental trawling and gill netting indicated that the inner Gulf (av. 7.8 kg...

  10. Long-term changes of mercury levels in ringed seal (Phoca hispida) from Amundsen Gulf, and beluga (Delphinapterus leucas) from the Beaufort Sea, western Canadian Arctic

    International Nuclear Information System (INIS)

    Outridge, P.M.; Hobson, K.A.; Savelle, J.

    2009-01-01

    Mercury (Hg) concentrations were determined in the canine teeth of ringed seals (Phoca hispida) harvested during the 13th-14th, late 19th and early 21st Centuries in Amundsen Gulf, Northwest Territories, Canada. Most historical and pre-industrial teeth contained undetectable Hg levels (i.e. 15 N values) did not change over time, modern δ 13 C values were lower by about 2 per mille than in the 14th and 19th Centuries. This could be due to increased dissolution of anthropogenically derived CO 2 in the ocean from the atmosphere, but could also indicate more offshore pelagic feeding by modern seals, which might be a factor in their Hg exposure. New tooth [Hg] data are also presented for the Beaufort Sea beluga, using recently-discovered museum samples collected in 1960/61, which showed that most of the anthropogenic contribution to beluga Hg had already taken effect by 1960 (reaching ∼ 75% of total Hg). Taken together, the long-term seal and beluga data indicate that whereas Hg levels in the marine ecosystems of the western Canadian Arctic were probably unchanged from pre-industrial times up to the late 19th Century, there was a significant, many-fold increase in the early to mid-20th Century, but little or no change after about the early 1960s.

  11. GULF OF MEXICO AQUATIC MORTALITY NETWORK (GMNET)

    Science.gov (United States)

    Five U.S. states share the northern coast of the Gulf, and each has a program to monitor mortalities of aquatic organisms (fish, shellfish, birds). However, each state has different standards, procedures, and documentation of mortality events. The Gulf of Mexico Aquatic Mortality...

  12. Lessons learned using water quality models to develop numeric nutrient criteria for a Gulf coast estuary

    Science.gov (United States)

    Pensacola Bay is a shallow, mesotrophic estuary located in the north-central coast of the Gulf of Mexico, US. In November 2012, the US Environmental Protection Agency (US EPA) proposed numeric total nitrogen (TN), total phosphorus (TP), and chlorophyll-a (chl-a) water quality cr...

  13. Neotectonic Activity from the Upper Reaches of the Arabian Gulf and Possibilities of New Oil Fields

    Science.gov (United States)

    Sissakian, V. K.; Abdul Ahad, A. D.; Al-Ansari, N.; Knutsson, S.

    2018-03-01

    Upper reaches of the Arabian Gulf consist of different types of fine sediments including the vast Mesopotamia Plain sediments, tidal flat sediments and estuarine sabkha sediments. The height of the plain starts from zero meter and increases northwards to three meters with extremely gentle gradient. The vast plain to the north of the Arabian Gulf is drained by Shat Al-Arab (Shat means river in Iraqi slang language) and Khor Al-Zubair (Khor means estuary). The former drains the extreme eastern part of the plain; whereas, the latter drains the western part. Shat Al-Arab is the resultant of confluence of the Tigris and Euphrates rivers near Al-Qurna town; about 160 km north of the Arabian Gulf mouth at Al-Fao town; whereas, the length of Khor Al-Zubair is about 50 km; as measured from Um Qasir Harbor. The drainage system around Khor Al-Zubair is extremely fine dendritic; whereas around Shat Al-Arab is almost parallel running from both sides of the river towards the river; almost perpendicularly. The fine dendritic drainage around Khor Al-Zubair shows clear recent erosional activity, beside water divides, abandoned irrigation channels and dislocated irrigational channels and estuarine distributaries; all are good indication for a Neotectonic activity in the region. These may indicate the presence of subsurface anticlines, which may represent oil fields; since tens of subsurface anticlines occur in near surroundings, which are oil fields.

  14. Structure and Stratigraphy of the Rift Basins in the Northern Gulf of California: Results from Analysis of Seismic Reflection and Borehole Data.

    Science.gov (United States)

    Martín, A.; González, M.; Helenes, J.; García, J.; Aragón, M.; Carreño, A.

    2008-12-01

    the south the Consag and Wagner faults connect with a diffuse zone of deformation defined by a series of NE trending faults with moderate normal displacement in the Upper Delfin basin. These NE-trending faults intersect the northern strand of the Ballenas transform fault along the Baja California margin, whereas the eastern end of the NE-trending faults is poorly defined along the western flank of the central antiform. In summary, sequence A was likely deposited across most of the northern gulf in the late Miocene, sequence B marks the onset of two discrete transtensional basin systems controlled by both low and high-angle faults in late Miocene-Pliocene time, and sequence C marks the regional migration of plate- margin shearing to its present location in the western gulf. Thermal effects associated with abundant volcanism and sedimentation along the western margin of the gulf likely controlled the asymmetric partitioning plate margin and shearing during the most recent phase of oblique rifting.

  15. Evaluation of significant sources influencing the variation of water quality of Kandla creek, Gulf of Katchchh, using PCA

    Digital Repository Service at National Institute of Oceanography (India)

    Dalal, S.G.; Shirodkar, P.V.; Jagtap, T.G.; Naik, B.G.; Rao, G.S.

    and Marhaba 2003). The use of PCA for wa- ter quality assessment has increased in the last few years, mainly due to the need to obtain appreciable data reduction for analysis and decision (Morales et al. 1999). Bartlett’s sphericity test (χ 2 with degrees....). Florida: CRC. Morales, M. M., Mart, P., Llopis, A., Campos, L., & Sagrado, J. (1999). An environmental study by fac- tor analysis of surface seawater in the Gulf of Valen- cia (western Mediterranean). Analytica Chimica Acta, 394, 109–117. doi:10.1016/S0003...

  16. Fish larvae from the Gulf of California

    Directory of Open Access Journals (Sweden)

    Gerardo Aceves-Medina

    2003-03-01

    Full Text Available Taxonomic composition of fish larvae was analysed from 464 plankton samples obtained during 10 oceanographic surveys in the Gulf of California between 1984 and 1988. We identified 283 taxa: 173 species, 57 genera, and 53 families. Tropical and subtropical species predominated except during the winter, when temperate-subarctic species were dominant. The most abundant species were the mesopelagic Benthosema panamense, Triphoturus mexicanus and Vinciguerria lucetia, but the coastal pelagic species Engraulis mordax, Opisthonema spp., Sardinops caeruleus and Scomber japonicus were also prominent. The taxonomic composition of the ichthyoplankton shows the seasonality of the Gulf as well as environmental changes that occurred between the 1984-1987 warm period and the 1956-1957 cool period previously reported. The presence of E. mordax larvae as one of the most abundant species in the Gulf provides evidence of the reproduction of this species two years before the development of the northern anchovy fishery and the decline of the sardine fishery in the Gulf of California.

  17. An Overseas Naval Presence without Overseas Bases: China’s Counter-piracy Operation in the Gulf of Aden

    Directory of Open Access Journals (Sweden)

    Susanne Kamerling

    2011-01-01

    Full Text Available This article aims to assess how China is using its navy to secure its interests in the Gulf of Aden, and what this means for the European Union. The analysis of how China’s naval presence in the Gulf of Aden has evolved since early 2009 suggests that China’s increasing interests and involvement in Africa do not necessarily lead to the establishment of Chinese naval bases in or close to the continent. To supply its ships, the Chinese navy may well continue using the commercial-diplomatic model that China has been developing. This model is based on China’s close diplomatic relations with countries in the region and the extensive presence of Chinese companies to whom logistical services can be outsourced and who are under a greater degree of state influence than most Western multinationals. One of the consequences of this approach is that although China may not establish overseas military bases, it may be able to keep expanding its naval presence in or around Africa.

  18. Influence of the Gulf Stream on the troposphere.

    Science.gov (United States)

    Minobe, Shoshiro; Kuwano-Yoshida, Akira; Komori, Nobumasa; Xie, Shang-Ping; Small, Richard Justin

    2008-03-13

    The Gulf Stream transports large amounts of heat from the tropics to middle and high latitudes, and thereby affects weather phenomena such as cyclogenesis and low cloud formation. But its climatic influence, on monthly and longer timescales, remains poorly understood. In particular, it is unclear how the warm current affects the free atmosphere above the marine atmospheric boundary layer. Here we consider the Gulf Stream's influence on the troposphere, using a combination of operational weather analyses, satellite observations and an atmospheric general circulation model. Our results reveal that the Gulf Stream affects the entire troposphere. In the marine boundary layer, atmospheric pressure adjustments to sharp sea surface temperature gradients lead to surface wind convergence, which anchors a narrow band of precipitation along the Gulf Stream. In this rain band, upward motion and cloud formation extend into the upper troposphere, as corroborated by the frequent occurrence of very low cloud-top temperatures. These mechanisms provide a pathway by which the Gulf Stream can affect the atmosphere locally, and possibly also in remote regions by forcing planetary waves. The identification of this pathway may have implications for our understanding of the processes involved in climate change, because the Gulf Stream is the upper limb of the Atlantic meridional overturning circulation, which has varied in strength in the past and is predicted to weaken in response to human-induced global warming in the future.

  19. Tsunamigenic earthquakes in the Gulf of Cadiz: fault model and recurrence

    Directory of Open Access Journals (Sweden)

    L. M. Matias

    2013-01-01

    Full Text Available The Gulf of Cadiz, as part of the Azores-Gibraltar plate boundary, is recognized as a potential source of big earthquakes and tsunamis that may affect the bordering countries, as occurred on 1 November 1755. Preparing for the future, Portugal is establishing a national tsunami warning system in which the threat caused by any large-magnitude earthquake in the area is estimated from a comprehensive database of scenarios. In this paper we summarize the knowledge about the active tectonics in the Gulf of Cadiz and integrate the available seismological information in order to propose the generation model of destructive tsunamis to be applied in tsunami warnings. The fault model derived is then used to estimate the recurrence of large earthquakes using the fault slip rates obtained by Cunha et al. (2012 from thin-sheet neotectonic modelling. Finally we evaluate the consistency of seismicity rates derived from historical and instrumental catalogues with the convergence rates between Eurasia and Nubia given by plate kinematic models.

  20. An economic Manifesto for the oil exporting countries of the Persian Gulf

    Directory of Open Access Journals (Sweden)

    Hossein Askari

    2006-12-01

    Full Text Available The oil-exporting countries of the Persian Gulf have failed economically and socially. It is time for a radical new approach to managing oil revenues while oil and gas reserves last. We propose an approach to cut the level of oil revenues available to governments to zero while incorporating a formal “Oil Fund for All Generations”. Others have proposed and implemented oil funds but in our proposal the government would (in time lose all access to oil revenues; by taking easy money away from governments and rulers, the likelihood of waste, corruption and wars will be reduced, and there will be better chance of adopting and implementing rational economic policies to enhance equity across generations.

  1. Evaluation of six NEHRP B/C crustal amplification models proposed for use in western North America

    Science.gov (United States)

    Boore, David; Campbell, Kenneth W.

    2016-01-01

    We evaluate six crustal amplification models based on National Earthquake Hazards Reduction Program (NEHRP) B/C crustal profiles proposed for use in western North America (WNA) and often used in other active crustal regions where crustal properties are unknown. One of the models is based on an interpolation of generic rock velocity profiles previously proposed for WNA and central and eastern North America (CENA), in conjunction with material densities based on an updated velocity–density relationship. A second model is based on the velocity profile used to develop amplification factors for the Next Generation Attenuation (NGA)‐West2 project. A third model is based on a near‐surface velocity profile developed from the NGA‐West2 site database. A fourth model is based on velocity and density profiles originally proposed for use in CENA but recently used to represent crustal properties in California. We propose two alternatives to this latter model that more closely represent WNA crustal properties. We adopt a value of site attenuation (κ0) for each model that is either recommended by the author of the model or proposed by us. Stochastic simulation is used to evaluate the Fourier amplification factors and their impact on response spectra associated with each model. Based on this evaluation, we conclude that among the available models evaluated in this study the NEHRP B/C amplification model of Boore (2016) best represents median crustal amplification in WNA, although the amplification models based on the crustal profiles of Kamai et al. (2013, 2016, unpublished manuscript, see Data and Resources) and Yenier and Atkinson (2015), the latter adjusted to WNA crustal properties, can be used to represent epistemic uncertainty.

  2. Long-term (1998 vs. 2010) large-scale comparison of soft-bottom benthic macrofauna composition in the Gulf of Lions, NW Mediterranean Sea

    Science.gov (United States)

    Bonifácio, Paulo; Grémare, Antoine; Gauthier, Olivier; Romero-Ramirez, Alicia; Bichon, Sabrina; Amouroux, Jean-Michel; Labrune, Céline

    2018-01-01

    We achieved a long term (i.e., 1998 vs. 2010) large scale (i.e., whole Gulf of Lions) study of benthic macrofauna composition in the Gulf of Lions based on the resampling of 91 stations located along 21 inshore-offshore transects. Results show that the 3 main benthic communities identified in 1998 were still present in 2010 although their composition changed. Using only year and station of sampling we found a significant space-time interaction explaining changes in macrofaunal community composition, and, in this study, stations differ primarily in terms of depth and distance to the Rhône river mouth. Temporal changes in benthic macrofauna composition were clearly most important at shallow stations (i.e., in the Littoral Fine Sand community) than at deep ones (i.e., Terrigenous Coastal Mud community). These results are in good agreement with the current paradigm according to which climatic oscillations such as NAO (North Atlantic Oscillation) and WeMO (Western Mediterranean Oscillation) are indirectly (i.e., through changes in the frequency of occurrence and the intensity of storms) controlling benthic macrofauna composition in the Gulf of Lions. This hypothesis is further supported by a meta-analysis of changes in the average and maximal yearly abundances of the polychaete Ditrupa arietina. At last, the spatial modelling of 1998 and 2010 benthic macrofauna compositions both suggested a significant effect of Rhône River inputs on the spatial distribution of benthic macrofauna in the Gulf of Lions.

  3. 77 FR 18307 - Gulf War Veterans' Illnesses Task Force Report

    Science.gov (United States)

    2012-03-27

    ... DEPARTMENT OF VETERANS AFFAIRS Gulf War Veterans' Illnesses Task Force Report AGENCY: Department...) established the Gulf War Veterans' Illnesses Task Force (GWVI-TF) in August 2009 to conduct a comprehensive review of VA policies and programs addressing 1990-1991 Gulf War Veterans' illnesses. The GWVI-TF...

  4. US Gulf operators take the long view

    International Nuclear Information System (INIS)

    Flatern, Rick von

    1999-01-01

    Oil projects in the Gulf of Mexico have suffered from the crash in oil prices in the mid-1980s, however as these projects tend to be long-term and therefore less sensitive to current oil prices, many are continuing to be funded. It is now believed by deepwater exploration operators that the Gulf of Mexico may be one of the world's most promising sources of new reserves. This article analyses the likely future exploration of deepwater reserves by major companies such as Shell, noted for its capital intensive and technologically innovative activity in the Gulf, as well as the newer, smaller independent operators. (UK)

  5. 76 FR 59102 - Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic; Spiny Lobster Fishery of the Gulf...

    Science.gov (United States)

    2011-09-23

    ... Atlantic; Spiny Lobster Fishery of the Gulf of Mexico and South Atlantic; Amendment 10 AGENCY: National... Fishery Management Plan for the Spiny Lobster Fishery of the Gulf of Mexico and South Atlantic (FMP), as... implemented, this rule would revise the lobster species contained within the fishery management unit...

  6. 76 FR 75488 - Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic; Spiny Lobster Fishery of the Gulf...

    Science.gov (United States)

    2011-12-02

    ... Atlantic; Spiny Lobster Fishery of the Gulf of Mexico and South Atlantic; Amendment 10 AGENCY: National... Plan for the Spiny Lobster Fishery of the Gulf of Mexico and South Atlantic (FMP), as prepared and... the lobster species contained within the fishery management unit; establishes an annual catch limit...

  7. The Arabian Gulf University College of Medicine and Medical Sciences: a successful model of a multinational medical school.

    Science.gov (United States)

    Hamdy, Hossam; Anderson, M Brownell

    2006-12-01

    In the late 1970s, leaders of the Arabian [corrected] Gulf countries proposed a novel idea of a joint educational and cultural venture: establishing a new regional university based in the Kingdom of Bahrain that would be managed as a multinational consortium of Gulf countries including Saudi Arabia, United Arab Emirates, Kuwait, Oman, Qatar, and Bahrain. It was intended to promote higher education and research in the Gulf region; to serve the development needs of the region; to reflect the unique economic, social, and cultural attributes of the Gulf communities and their environments; and to respond to the health care needs of the member countries. Since its inception in 1982, the College of Medicine and Medical Sciences (CMMS) at Arabian Gulf University (AGU) has adopted the educational philosophy of problem-based learning (PBL) and self-directed, student-centered education. The curriculum is integrated, with early introduction of education to foster clinical skills and professional competencies. The strategic alliance with the health care systems in Bahrain and other Gulf regions has created a successful model of efficient and effective initialization of health care resources in the community. The experience that has accumulated at the AGU-CMMS from introducing innovative medical education has allowed it to take a leadership position in medical education in the Gulf region. The original goals of this unique experiment have been realized along with unanticipated outcomes of spearheading changes in medical education in the Gulf region. Old and new medical schools have adopted several characteristics of the AGU educational program. Several elements contributed to its success: a clear vision of providing quality medical education and realizing and sustaining this vision by a supportive leadership at the university and college levels; an alliance with the regional health care systems; a dedicated faculty who have been able to work as a team while continually

  8. Gulf Shrimp System

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Gulf of Mexico Shrimp Landings - This data set contains catch (landed catch) and effort for fishing trips made by the larger vessels that fish near and offshore for...

  9. Epidemiological Studies Persian Gulf War Illnesses Persian Gulf Women's Health Linkage Study

    National Research Council Canada - National Science Library

    Klemm, Rebecca

    1997-01-01

    The Persian Gulf Women's Health Linkage Study will provide baseline health and risk factor information to estimate the prevalence of selected health conditions, with an emphasis on reproductive health...

  10. 77 FR 41448 - Notice of Availability of the Proposed Final Five Year Outer Continental Shelf (OCS) Oil and Gas...

    Science.gov (United States)

    2012-07-13

    ... President and Congress. After a period of at least 60 days from the date it was submitted to the President... (3 areas off Alaska and 3 areas in the Gulf of Mexico (GOM)). Maps A and B show the areas proposed... not under congressional moratorium pursuant to the Gulf of Mexico Energy Security Act of 2006 (GOMESA...

  11. 76 FR 54727 - Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic; Spiny Lobster Fishery of the Gulf...

    Science.gov (United States)

    2011-09-02

    ... RIN 0648-AY72 Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic; Spiny Lobster Fishery of...) have submitted Amendment 10 to the Fishery Management Plan for the Spiny Lobster Fishery of the Gulf of... actions to revise the lobster species contained within the fishery management unit; revise definitions of...

  12. Western and Eastern Values are Complementary

    Directory of Open Access Journals (Sweden)

    Ashok Natarajan

    2018-05-01

    Full Text Available All values are spiritual in their essence, even those that appear to be physical. For all values seek perfection of the whole. The widest and highest perfection is based on the totality and oneness of reality. Such a perfection is comprehensive and inclusive. It is founded on truths that complete other truths rather than compete with them. Despite their vast cultural differences, Eastern and Western values reflect complementary aspects of a unified whole. But the process of developing values in any society depends on its underlying cultural perspective. The nature of mind is such that it divides and analyzes reality, and concentrates on one thing at a time, whereas spirituality is founded on the perception of the whole. This vast difference in underlying cultural orientation helps explain the immense gulf in understanding that has long distinguished and separated the cultures of Asia and Europe.

  13. New Insight into the Lithosphere Structure of the Gulf Coast of Texas and Louisiana

    Science.gov (United States)

    Pulliam, J.; Gurrola, H.; Mickus, K. L.; Keller, G. R.

    2016-12-01

    The Gulf Coast of Texas is a passive margin remaining after the breakup of Pangaea. The opening of the western Gulf of Mexico (GOM) was the result of the Yucatan block rifting away from North America and rotating to its present location but the exact nature of this rifting is not well understood. Some models describe it as passive rifting while other models consider it to be the result of active volcanic rifting. Until recently the sparse distribution of seismic stations limits our ability to image the deep crust and upper mantle that are important to the understanding of important tectonic process of the area. Here we present new observations from passive seismic imaging using data from a broadband 26-station profile across the Gulf Coastal Plain (GCP) and the EarthScope Transportable Array. Ps receiver function (RF) imaging of the GCP profile reveals possible remnants of a subducted slab beneath the GCP of the central Texas coast outboard of the Balcones fault zone. The presence of a remnant late Paleozoic slab associated with the assembly of Pangaea may imply that rifting associated with the opening of the GOM did not completely overprint older features, which suggests that passive rifting was responsible for the opening of western GOM. A remnant slab would provide a plausible explanation for a low velocity layer imaged beneath the coastal region by Sp RF imaging. A strong negative S110p phase observed in an Sp receiver functions image across the GCP of central Texas may be interpreted as the Lithosphere-Asthenosphere boundary (LAB) but observations of other positive and negative phases in the 110 and 200 km depth interval lead us to believe the interval is a semi-ductile region with layered flow. We refer to this interval as a "Lithosphere-Asthenosphere Transition Zone" (LATZ). The LATZ model is supported by observed high P but low S-wave velocities in this depth interval of tomographic models and by SKS analysis that inferred a large amount of anisotropy in

  14. Free and forced Rossby normal modes in a rectangular gulf of arbitrary orientation

    Science.gov (United States)

    Graef, Federico

    2016-09-01

    A free Rossby normal mode in a rectangular gulf of arbitrary orientation is constructed by considering the reflection of a Rossby mode in a channel at the head of the gulf. Therefore, it is the superposition of four Rossby waves in an otherwise unbounded ocean with the same frequency and wavenumbers perpendicular to the gulf axis whose difference is equal to 2mπ/W, where m is a positive integer and W the gulf's width. The lower (or higher) modes with small m (or large m) are oscillatory (evanescent) in the coordinate along the gulf; these are elucidated geometrically. However for oceanographically realistic parameter values, most of the modes are evanescent. When the gulf is forced at the mouth with a single Fourier component, the response is in general an infinite sum of modes that are needed to match the value of the streamfunction at the gulf's entrance. The dominant mode of the response is the resonant one, which corresponds to forcing with a frequency ω and wavenumber normal to the gulf axis η appropriate to a gulf mode: η =- β sin α/(2ω) ± Mπ/W, where α is the angle between the gulf's axis and the eastern direction (+ve clockwise) and M the resonant's mode number. For zonal gulfs ω drops out of the resonance condition. For the special cases η = 0 in which the free surface goes up and down at the mouth with no flow through it, or a flow with a sinusoidal profile, resonant modes can get excited for very specific frequencies (only for non-zonal gulfs in the η = 0 case). The resonant mode is around the annual frequency for a wide range of gulf orientations α ∈ [40°, 130°] or α ∈ [220°, 310°] and gulf widths between 150 and 200 km; these include the Gulf of California and the Adriatic Sea. If η is imaginary, i.e. a flow with an exponential profile, there is no resonance. In general less modes get excited if the gulf is zonally oriented.

  15. Northern Gulf Littoral Initiative (NGLI), Geology and Physical Properties of Marine Sediments in the N.E. Gulf of Mexico: Data Report

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Northern Gulf Littoral Initiative (NGLI), Geology and Physical Properties of Marine Sediments in the N.E. gulf of Mexico: Data Report, was produced by the U.S....

  16. Overview of the Kinematics of the Salton Trough and Northern Gulf of California

    Science.gov (United States)

    Stock, J. M.

    2016-12-01

    In the Salton Trough and Northern Gulf of California, transtensional rifting is leading to full continental plate breakup, as a major continental block is being transferred to an oceanic plate. Since at least 6 Ma this region has taken up most of the plate boundary slip between the Pacific and North America plates at this latitude. We review the structural history of plate separation, as constrained by many recent studies of present and past fault configurations, seismicity, and basin development as seen from geology and geophysics. Modern activity in the USA is dominated by NW-striking strike-slip faults (San Andreas, San Jacinto, Elsinore), and subsidiary NE-striking faults. There is an equally broad zone in Mexico (faults from the Mexicali Valley to the Colorado River Delta and bounding the Laguna Salada basin), including active low-angle detachment faults. In both areas, shifts in fault activity are indicated by buried faults and exhumed or buried earlier basin strata. Seismicity defines 3 basin segments in the N Gulf: Consag-Wagner, Upper Delfin, and Lower Delfin, but localization is incomplete. These basins occupy a broad zone of modern deformation, lacking single transform faults, although major strike-slip faults formed in the surrounding continental area. The off-boundary deformation on the western side of the plate boundary has changed with time, as seen by Holocene and Quaternary faults controlling modern basins in the Gulf Extensional Province of NE Baja California, and stranded Pliocene continental and marine basin strata in subaerial fault blocks. The eastern side of the plate boundary, in the shallow northeastern Gulf, contains major NW-striking faults that may have dominated the earlier (latest Miocene-early Pliocene) kinematics. The Sonoran coastal plain likely buries additional older faults and basin sequences; further studies here are needed to refine models of the earlier structural development of this sector. Despite > 250 km of plate

  17. Gulf operators resuming production

    International Nuclear Information System (INIS)

    Koen, A.D.

    1992-01-01

    This paper reports that Gulf of Mexico operators last week were gradually restoring production at installations struck by Hurricane Andrew. The Minerals Management Service continued receiving reports of more damage. By the end of the day Sept. 8, MMS had received reports of damage to 83 pipeline segments and 193 platforms and satellite installations. Damage reports listed 112 installations with structural damage, 13 platforms toppled and five leaning, and 30 satellite platforms toppled and 33 leaning. But despite the extent of damage the storm inflicted on oil and gas installations in the gulf, it pales in comparison to the misery and suffering the storm caused in Florida and Louisiana, an oil company official said

  18. Toward a quantitative and empirical dissolved organic carbon budget for the Gulf of Maine, a semienclosed shelf sea

    Science.gov (United States)

    Balch, William; Huntington, Thomas G.; Aiken, George R.; Drapeau, David; Bowler, Bruce; Lubelczyk, Laura; Butler, Kenna D.

    2016-01-01

    A time series of organic carbon export from Gulf of Maine (GoM) watersheds was compared to a time series of biological, chemical, bio-optical, and hydrographic properties, measured across the GoM between Yarmouth, NS, Canada, and Portland, ME, U.S. Optical proxies were used to quantify the dissolved organic carbon (DOC) and particulate organic carbon in the GoM. The Load Estimator regression model applied to river discharge data demonstrated that riverine DOC export (and its decadal variance) has increased over the last 80 years. Several extraordinarily wet years (2006–2010) resulted in a massive pulse of chromophoric dissolved organic matter (CDOM; proxy for DOC) into the western GoM along with unidentified optically scattering material (Time lags between DOC discharge and its appearance in the GoM increased with distance from the river mouths. Algae were also a significant source of DOC but not CDOM. Gulf-wide algal primary production has decreased. Increases in precipitation and DOC discharge to the GoM are predicted over the next century.

  19. PCB modeling in the Gulf of Lions using a 3D coupled model

    Science.gov (United States)

    Alekseenko, Elena; Thouvenin, Bénédicte; Tixier, Céline; Tronczynski, Jacek; Garreau, Pierre; Verney, Romaric; Carlotti, Francois; Espinasse, Boris; Queguiner, Bernard; Baklouti, Melika

    2013-04-01

    also enables to identify key parameters and assumptions which control contamination pathways in the Gulf of Lions. Thus, this work is based on coupling such complex biogeochemical model (Eco3M), with a PCBs transport model and a model of hydrodynamics (MARS3D) in order to test a scientific exploration tool for the assessment of PCB dispersion in space and time in the Gulf of Lion and of their transfer to zooplankton via biogeochemical processes. In this work we estimate PCB budgets and fluxes into the Gulf of Lions between the different species of PCB, namely: dissolved total, available dissolved, particulate, biosorbed on plankton, assimilated by zooplankton, which are governed by different processes, such as: adsorption/desorption (equilibrium partitioning), bacteria and plankton mortality, zooplankton excretion, grazing, mineralization, volatilization. References Auger P.A., Diaz F., Ulses C., Estornel C., Neveux J., Joux F., Pujo-Pay M. and Naudin J.J., 2011. Functioning of the planktonic ecosystem on the Gulf of Lions shelf (NW Mediterranean) during spring and its impact on the carbon deposition: a field data and 3-D modeling combined approach. Biogeosciences, 8, 3231-3261. André, G., Garreau, P., Garnier, V. and Fraunié, P., 2005. Modeled variability of the sea surface circulation in the North-western Mediterranean Sea and in the Gulf of Lions. Ocean Dynamics, 55, 294-308. Andre, G., Garreau, P., Fraune, P.,2009. Mesoscale slope current variability in the Gulf of Lions. Interpretation of in-situ measurements using a three-dimentional model. Continental Shelf Research, 2, 407-423. Carpenter, D.O., 2006. Polychlorinated biphenyls (PCBs): Routes of exposure and effects on human health. Rev. Environ. Health, 21, 1-23. Dufois F., Garreau P., Le Hir P., Forget P., 2008. Wave- and current-induced bottom shear stress distribution in the Gulf of Lions. Continental Shelf Research, 28(15), 1920-1934. Lohmann, R.;Breivik, K.; Dachs, J.; Muir, D., 2007. Global fate of POPs

  20. 75 FR 63780 - Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic; Reef Fish Fishery of the Gulf of...

    Science.gov (United States)

    2010-10-18

    ... shallow water grouper (SWG) species, and require vessels with valid commercial Gulf of Mexico (Gulf) reef... that the stock continues to be neither overfished nor undergoing overfishing. However, this update... migratory species (HMS) species and relatively less dependent on landings of deep-water grouper species. On...

  1. Sea snakes (Elapidae, Hydrophiinae) in their westernmost extent: an updated and illustrated checklist and key to the species in the Persian Gulf and Gulf of Oman

    Science.gov (United States)

    Rezaie-Atagholipour, Mohsen; Ghezellou, Parviz; Hesni, Majid Askari; Dakhteh, Seyyed Mohammad Hashem; Ahmadian, Hooman; Vidal, Nicolas

    2016-01-01

    Abstract The Persian Gulf is known as the westernmost distribution limit for sea snakes, except for Hydrophis platurus (Linnaeus, 1766) that reaches southeastern Africa. Previous identification guides for sea snakes of the Persian Gulf and its adjacent waters in the Gulf of Oman were based on old data and confined mostly to written descriptions. Therefore, a series of field surveys were carried out in 2013 and 2014 through Iranian coastal waters of both gulfs to provide a comprehensive sampling of sea snakes in the area. This paper presents an illustrated and updated checklist and identification tool for sea snakes in the Persian Gulf and Gulf of Oman, which are based on new material and a review of the literature. This checklist includes ten species of marine hydrophiines, of which one, Microcephalophis cantoris (Günther, 1864), is a new record for the area. All specimens examined herein are deposited and available at the Zoological Museum of Shahid Bahonar University of Kerman, Kerman province, Iran. PMID:27843383

  2. 75 FR 64171 - Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic; Reef Fish Fishery of the Gulf of...

    Science.gov (United States)

    2010-10-19

    ... prevent overfishing of Gulf greater amberjack. DATES: Closure is effective 12:01 a.m., local time, October... harvest to the quota is crucial to meeting the legal requirements to prevent and end overfishing and.... This closure is intended to prevent overfishing of Gulf greater amberjack and increase the likelihood...

  3. 77 FR 8810 - Gulf of Mexico Fishery Management Council; Public Meetings

    Science.gov (United States)

    2012-02-15

    .... SUMMARY: The Gulf of Mexico Fishery Management Council (Council) will convene its Law Enforcement Advisory... East Beach Blvd., Gulfport, MS 39501. Council address: Gulf of Mexico Fishery Management Council, 2203..., Deputy Executive Director, Gulf of Mexico Fishery Management Council; telephone: (813) 348-1630...

  4. 75 FR 7444 - Gulf of Mexico Fishery Management Council; Public Meetings

    Science.gov (United States)

    2010-02-19

    .... SUMMARY: The Gulf of Mexico Fishery Management Council (Council) will convene its Law Enforcement Advisory...., Orange Beach, AL 36561. Council address: Gulf of Mexico Fishery Management Council, 2203 North Lois... Director, Gulf of Mexico Fishery Management Council; telephone: (813) 348-1630. SUPPLEMENTARY INFORMATION...

  5. Deep-water northern Gulf of Mexico hydrocarbon plays

    International Nuclear Information System (INIS)

    Peterson, R.H.; Cooke, D.W.

    1995-01-01

    The geologic setting in the deep-water (depths greater than 1,500 feet) Gulf of Mexico is very favorable for the existence of large, commercial hydrocarbon accumulations. These areas have active salt tectonics that create abundant traps, underlying mature Mesozoic source rocks that can be observed expelling oil and gas to the ocean surface, and good quality reservoirs provided by turbidite sand deposits. Despite the limited amount of drilling in the deep-water Gulf of Mexico, 11 deep-water accumulations have been discovered which, when developed, will rank in the top 100 largest fields in the Gulf of Mexico. Proved field discoveries (those with announced development plans) have added over 1 billion barrels of oil equivalent to Gulf of Mexico reserves, and unproved field discoveries may add to additional billion barrels of oil equivalent. The Minerals Management Service, United States Department of the Interior, has completed a gulf-wide review of over 1,086 oil and gas fields and placed every pay sand in each field into a hydrocarbon play (plays are defined by chronostratigraphy, lithostratigraph, structure, and production). Seven productive hydrocarbon plays were identified in the deep-water northern Gulf of Mexico. Regional maps illustrate the productive limits of each play. In addition, field data, dry holes, and wells with sub-economic pay were added to define the facies and structural limits for each play. Areas for exploration potential are identified for each hydrocarbon play. A type field for each play is chosen to demonstrate the play's characteristics

  6. The Gulf of Mexico research initiative: It takes a village

    Science.gov (United States)

    Colwell, Rita R.

    2016-07-01

    The Gulf of Mexico Research Initiative (GoMRI) was established at the time of one of the most significant ecological events in recent memory, the Deepwater Horizon oil spill. Defined by the discharge of over 150 million gallons of crude oil and the introduction of over 1.8 million gallons of chemical dispersants into the Gulf system, the impacts of the Deepwater Horizon disaster reached the Gulf Coast's wetlands and beaches and impacted the surface and deep ocean. The ecological story of the event reveals a strong linkage between the deep sea research community and research priorities in the Gulf of Mexico (coastal processes, human health, etc.). Deep Sea research efforts have revealed critical parts of the story, providing information on transport, fate, and effects of the Deepwater Horizon oil release and subsequent recovery of the Gulf of Mexico ecosystems.

  7. 77 FR 59890 - Foreign-Trade Zone 92-Gulfport, MS; Authorization of Production Activity; Gulf Ship, LLC...

    Science.gov (United States)

    2012-10-01

    ... DEPARTMENT OF COMMERCE Foreign-Trade Zones Board [B-36-2012] Foreign-Trade Zone 92--Gulfport, MS; Authorization of Production Activity; Gulf Ship, LLC (Shipbuilding); Gulfport, MS On May 10, 2012, the Mississippi Coast Foreign-Trade Zone, Inc., grantee of FTZ 92, submitted a notification of proposed production activity to the Foreign-Trade Zones...

  8. Gulf War Syndrome: a review of current knowledge and understanding.

    Science.gov (United States)

    Minshall, D

    2014-01-01

    The 1991 Persian Gulf War was a resounding military success for coalition forces, who liberated Kuwait following the Iraqi invasion. The medical legacy we have from the conflict is the poorly understood, yet remarkable, phenomenon of Gulf War Syndrome, which surfaced soon after. Epidemiological research has proven beyond doubt that Gulf War veterans report a wide variety of symptoms, in excess of appropriately matched control subjects, and experience worse general health. Numerous toxic environmental hazards have been suggested as causes of Gulf War Syndrome, yet exhaustive scientific study has failed to provide conclusive proof of any link. No novel or recognised disease has been found to account for the symptomatic burden of veterans, and the optimal treatment remains uncertain. This understanding can be added to from an anthropological perspective, where the narratives of those afflicted provide further insight. The nature of military life was changing at the time of the Gulf War, challenging the identity and beliefs of some veterans and causing socio-cultural distress. The symptomatic presentation of Gulf War Syndrome can be considered an articulation of this disharmony. Gulf War Syndrome can also be considered within the group of post-combat disorders such as shellshock, the like of which have occurred after major wars in the last century. With the current withdrawal from Afghanistan, the Defence Medical Services (DMS) should heed the lessons of history.

  9. 77 FR 41376 - Gulf of Mexico Fishery Management Council; Public Meetings

    Science.gov (United States)

    2012-07-13

    ... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration Gulf of Mexico Fishery... Internet. Please go to the Gulf of Mexico Fishery Management Council's Web site at www.gulfcouncil.org for instructions. Council address: Gulf of Mexico Fishery Management Council, 2203 N. Lois Avenue, Suite 1100...

  10. 78 FR 33070 - Gulf of Mexico Fishery Management Council; Public Meetings

    Science.gov (United States)

    2013-06-03

    .... SUMMARY: The Gulf of Mexico Fishery Management Council (Council) will convene a public meeting. DATES: The...; telephone: (850) 433-3336. Council address: Gulf of Mexico Fishery Management Council, 2203 North Lois... Director, Gulf of Mexico Fishery Management Council; telephone: (813) 348-1630. SUPPLEMENTARY INFORMATION...

  11. Glacially-megalineated limestone terrain of Anticosti Island, Gulf of St. Lawrence, Canada; onset zone of the Laurentian Channel Ice Stream

    Science.gov (United States)

    Eyles, Nick; Putkinen, Niko

    2014-03-01

    Anticosti is a large elongate island (240 km long, 60 km wide) in eastern Canada within the northern part of a deep water trough (Gulf of St. Lawrence) that terminates at the Atlantic continental shelf edge. The island's Pleistocene glaciological significance is that its long axis lay transverse to ice from the Quebec and Labrador sectors of the Laurentide Ice Sheet moving south from the relatively high-standing Canadian Shield. Recent glaciological reconstructions place a fast-flowing ice stream along the axis of the Gulf of St. Lawrence but supporting geologic evidence in terms of recognizing its hard-bedded onset zone and downstream streamlined soft bed is limited. Anticosti Island consists of gently southward-dipping limestone plains composed of Ordovician and Silurian limestones (Vaureal, Becscie and Jupiter formations) with north-facing escarpments transverse to regional ice flow. Glacial deposits are largely absent and limestone plains in the higher central plateau of the island retain a relict apparently ‘preglacial’ drainage system consisting of deeply-incised dendritic bedrock valleys. In contrast, the bedrock geomorphology of the lower lying western and eastern limestone plains of the island is strikingly different having been extensively modified by glacial erosion. Escarpments are glacially megalineated with a distinct ‘zig-zag’ planform reflecting northward-projecting bullet-shaped ‘noses’ (identified as rock drumlins) up to 2 km wide at their base and 4 km in length with rare megagrooved upper surfaces. Drumlins are separated by southward-closing, funnel-shaped ‘through valleys’ where former dendritic valleys have been extensively altered by the streaming of basal ice through gaps in the escarpments. Glacially-megalineated bedrock terrain such as on the western and eastern flanks of Anticosti Island is elsewhere associated with the hard-bedded onset zones of fast flowing ice streams and provides important ground truth for the

  12. Plate tectonic model for the oligo-miocene evolution of the western Mediterranean

    Science.gov (United States)

    Cohen, Curtis R.

    1980-10-01

    This paper outlines a plate tectonic model for the Oligo-Miocene evolution of the western Mediterranean which incorporates recent data from several tectonic domains (Corsica, Sardinia, the Kabylies, Balearic promontory, Iberia, Algero-Provençal Basin and Tunisian Atlas). Following late Mesozoic anticlockwise rotation of the Iberian peninsula (including the Balearic promontory and Sardinia), late Eocene collision occurred between the Kabylies and Balearic promontory forming a NE-trending suture with NW-tectonic polarity. As a result of continued convergence between the African and European plates, a polarity flip occurred and a southward-facing trench formed south of the Kabylie—Balearic promontory suture. During late Oligocene time an E-W-trending arc and marginal basin developed behind the southward-facing trench in the area of the present-day Gulf of Lion. Opening of this basin moved the Corsica—Sardinia—Calabria—Petit Kabylie—Menorca plate southward, relative to the African plate. Early Miocene back-arc spreading in the area between the Balearic promontory and Grand Kabylie emplaced the latter in northern Algeria and formed the South Balearic Basin. Coeval with early Miocene back-arc basin development, the N-S-extension in the Gulf of Lion marginal basin changed to a more NW-SE direction causing short-lived extension in the area of the present-day Valencia trough and a 30° anticlockwise rotation of the Corsica-Sardinia-Calabria—Petit Kabylie plate away from the European plate. Early—middle Miocene deformation along the western Italian and northeastern African continental margins resulted from this rotation. During the early late Miocene (Tortonian), spreading within a sphenochasm to the southwest of Sardinia resulted in the emplacement of Petit Kabylie in northeastern Algeria.

  13. Keeping Safe Online: Perceptions of Gulf Adolescents

    Science.gov (United States)

    Alqahtani, Abdulmagni Mohammed

    2016-01-01

    With an increasing number of young people across the Gulf States now having access to the internet, the online safety of these adolescents is of concern. In a survey of 115 adolescents from the Gulf States, it was found that, although there are many benefits to young people, the risks of online usage are not fully understood by teenagers or their…

  14. Oil and politics: the post-war Gulf

    International Nuclear Information System (INIS)

    Stevens, P.

    1992-01-01

    This report considers the path of international crude oil prices for the remainder of the decade. The report intends to concentrate on the role of the main Gulf oil producing states. Specifically, it seeks to consider the impact of the Iraqi invasion of Kuwait and its aftermath on the Gulf's role in the oil price equation. The report begins by developing an analytical framework which allows the relevant driving forces to be placed in context. From this framework, three issues will emerge central to the Gulf's role in the determination of oil prices: the size and distribution of any excess capacity to produce crude oil; the pricing objectives of those who control that excess capacity; and finally the cohesion of those who control the excess capacity. (author)

  15. 78 FR 9888 - Gulf of Mexico Fishery Management Council; Public Meeting

    Science.gov (United States)

    2013-02-12

    .... SUMMARY: The Gulf of Mexico Fishery Management Council will convene a meeting of the Ad Hoc Artificial... Thursday, February 28, 2013. ADDRESSES: The meeting will be held at the Gulf of Mexico Fishery Management... INFORMATION CONTACT: Dr. John Froeschke, Fishery Biologist- Statistician; Gulf of Mexico Fishery Management...

  16. 78 FR 9372 - Gulf of Mexico Fishery Management Council; Public Meeting

    Science.gov (United States)

    2013-02-08

    .... SUMMARY: The Gulf of Mexico Fishery Management Council will convene a meeting of the Ad Hoc Private.... on Tuesday, February 26, 2013. ADDRESSES: The meeting will be held at the Gulf of Mexico Fishery... INFORMATION CONTACT: Dr. John Froeschke, Fishery Biologist- Statistician; Gulf of Mexico Fishery Management...

  17. 78 FR 42755 - Gulf of Mexico Fishery Management Council; Public Hearings

    Science.gov (United States)

    2013-07-17

    ...: The Gulf of Mexico Fishery Management Council (Council) will hold public hearings for Coastal... through Friday August 15, 2013 at ten locations throughout the Gulf of Mexico. The public hearings will...; Mobile, AL; Corpus Christi and Texas City, TX. Council address: Gulf of Mexico Fishery Management Council...

  18. Hurricane slams gulf operations

    International Nuclear Information System (INIS)

    Anon.

    1992-01-01

    This paper reports that reports of damage by Hurricane Andrew escalated last week as operators stepped up inspections of oil and gas installations in the Gulf of Mexico. By midweek, companies operating in the gulf and South Louisiana were beginning to agree that earlier assessments of damage only scratched the surface. Damage reports included scores of lost, toppled, or crippled platforms, pipeline ruptures, and oil slicks. By midweek the U.S. coast Guard had received reports of 79 oil spills. Even platforms capable of resuming production in some instances were begin curtailed because of damaged pipelines. Offshore service companies the another 2-4 weeks could be needed to fully assess Andrew's wrath. Lack of personnel and equipment was slowing damage assessment and repair

  19. Zubarah, the Gulf and local and international trade

    DEFF Research Database (Denmark)

    Simonsen, Jørgen Bæk

    2014-01-01

    The deeply etched tracks of human achievement in the Gulf region since prehistory reflect a dynamic interplay between local, neighbouring and inter-regional agencies. Geography, resources, the exchange of commodities and the transfer of ideas elevated the status of the Gulf to that of a major...

  20. Marine modification of terrestrial influences on Gulf hypoxia: Part II

    Directory of Open Access Journals (Sweden)

    2007-01-01

    Full Text Available This study examines potential marine modification of two classes of terrestrial influence on Gulf hypoxia: (1 the flow of nutrient-rich water from the Mississippi/Atchafalaya River Basin and (2 the massive physical, hydrological, chemical and biological change associated with the Atchafalaya’s partial capture of the Mississippi River. The latter involves repartitioning of a total flow of about 20 000 m3 sec−1, equal to that of 13 Nile Rivers, and a sediment load of 210 million metric tonnes yr−1,nearly 20 times that delivered by all of the rivers of the East Coast of the USA. Also involved is the loss of hundreds-to-thousands of years of stored nutrients and organic matter to the Gulf from enormous coastal wetland loss. This study found that the oceanography of the Gulf minimises the impact of both classes of terrestrial influence from the Mississippi River and its nearby estuaries on Gulf hypoxia. Oceanographic conditions give events associated with the Atchafalaya River a disproportionately large influence on Gulf hypoxia. A truly holistic environmental approach which includes the full effects of this highly dynamic coastal area is recommended to better understand and control Gulf hypoxia.

  1. Petroleum service projects in the Gulf of Guinea

    Science.gov (United States)

    Ken-Worgu, Kenneth Chukwumeka

    2011-07-01

    The goal of this record of study is to examine the major facets involved in managing several petroleum service projects located in three different countries in the Gulf of Guinea simultaneously, while effectively engaging in business development activities for the Oil and Industrial Services Group (OIS). This work also furnishes adequate background on related subject matters to enable understanding of the projects presented. The petroleum services sector is the back bone of the oil and gas industry. Services companies are vital to the success of all petroleum and energy producers in the USA, the Gulf of Guinea and the world. There is a need and demand for these service companies because they play various roles such as logistics, drilling, construction, dredging, pipe laying, procurement, food supply, human resource supply, etc. The Gulf of Guinea comprises of countries from west and central Africa. This project was limited to Nigeria, Equatorial Guinea and Cameroon. This area holds the largest petroleum reserves in Africa and plays a vital role in the global supply of petroleum. The Oil and Industrial Services Group (OIS), plans to establish herself as one of the leading petroleum service companies in this gulf. To manage this expansion, I have taken the role of Gulf of Guinea manager to apply my background as a petroleum engineer as well as my business skills to build a successful division of the company. This work provides a record of study of the management of services, projects and contracts carried out by the OIS group in the gulf of Guinea. The following are the specific projects in the Gulf of Guinea that I participated in: Managing delivering, maintenance and marketing of offshore vessels, Offshore pipe laying project, Integrated pipeline maintenance project, Development a petroleum technical training facilities, Agbami pipe insulation project, Engineering lift project and Capital budgeting analysis for potential investments. The details of the specific

  2. Phytoplankton variability in relation to some environmental factors in the eastern coast of Suez Gulf, Egypt.

    Science.gov (United States)

    Nassar, Mohamed Z; El-Din, Nihal G Shams; Gharib, Samiha M

    2015-10-01

    Water samples were seasonally collected from 12 stations of the eastern coast of Suez Gulf during autumn of 2012 and winter, spring, and summer of 2013 in order to investigate phytoplankton community structure in relation to some physicochemical parameters. The study area harbored a diversified phytoplankton community (138 species), belonging to 67 genera. Four algal groups were represented and classified as Bacillariophyceae (90 species), Dinophyceae (28 species), Cyanophyceae (16 species), and Chlorophyceae (4 species). The results indicated a relative high occurrence of some species namely.; Pleurotaenium trabecula of green algae; Chaetoceros lorenzianus, Proboscia alata var. gracillima, Pseudosolenia calcar-avis, and Pseudo-nitzschia pungens of diatoms; Trichodesmium erythraeum and Pseudoanabaena limnetica of cyanophytes. Most of other algal species were fairly distributed at the selected stations of the study area. The total abundance of phytoplankton was relatively low (average of 2989 unit/L) in the eastern coast of Suez Gulf, as compared its western coast and the northern part of the Red Sea. The diversity of phytoplankton species was relatively high (2.35-3.82 nats) with an annual average of 3.22 nats in the present study. The results concluded that most of eastern coast of Suez Gulf is still healthy, relatively unpolluted, and oligotrophic area, which is clearly achieved by the low values of dissolved phosphate (0.025-0.3 μM), nitrate (0.18-1.26 μM), and dissolved ammonium (0.81-5.36 μM). Even if the occurrence of potentially harmful algae species was low, the study area should be monitored continuously. The dissolved oxygen ranged between 1.77 and 8.41 mg/L and pH values between 7.6 and 8.41. The multiple regression analysis showed that the dissolved nitrate and pH values were the most effective factors that controlled the seasonal fluctuations of phytoplankton along the eastern coast of Suez Gulf during 2012-2013.

  3. 75 FR 7444 - Gulf of Mexico Fishery Management Council; Public Meeting

    Science.gov (United States)

    2010-02-19

    .... SUMMARY: The Gulf of Mexico Fishery Management Council (Council) will convene a web based meeting of the... via internet. Please go to the Gulf of Mexico Fishery Management Council's website at www.gulfcouncil.org for instructions. Council address: Gulf of Mexico Fishery Management Council, 2203 N. Lois Avenue...

  4. Energy partnership: China and the Gulf states

    International Nuclear Information System (INIS)

    Bahgat, G.

    2005-01-01

    One of the most significant developments in the global energy market in the last several years has been China's skyrocketing demand for energy. In 1993, China became a net oil importer for the first time in its history and in 2003 replaced Japan as the world's second-largest oil importer (after the United States). The country needs more energy to maintain its spectacular economic performance. This study examines China's attempts to satisfy its growing needs for oil and natural gas by increasing imports from Russia and Central Asia/Caspian Sea region. The analysis suggests that despite growing cooperation between the two sides, the Gulf region is likely to satisfy most of China's hydrocarbons needs. Energy partnership between China and the Gulf has already started and is likely to be consolidated over the next few decades. The study also argues that this growing partnership between China and the Gulf should not be seen as a threat to any third party. The global energy market is well-integrated. Energy policy should not be seen in zero-sum terms. A China-Gulf partnership will benefit both sides and contribute to the stability of global energy markets. (author)

  5. Modern coral reefs of western Atlantic: new geological perspective

    Energy Technology Data Exchange (ETDEWEB)

    MacIntyre, I.G.

    1988-11-01

    Contrary to popular belief of the late 1960s, western Atlantic Holocene reefs have a long history and are not feeble novice nearshore veneers that barely survived postglacial temperatures. Rather, the growth of these reefs kept pace with the rising seas of the Holocene transgression and their development was, for the most part, controlled by offshore wave-energy conditions and the relationship between changing sea levels and local shelf topography. Thus, the outer shelves of the eastern Caribbean in areas of high energy have relict reefs consisting predominantly of Acropora palmata, a robust shallow-water coral. The flooding of adjacent shelves during the postglacial transgression introduced stress conditions that terminated the growth of these reefs. When, about 7000 yr ago, shelf-water conditions improved, scattered deeper water coral communities reestablished themselves on these stranded shelf-edge reefs, and fringing and bank-barrier reefs began to flourish in shallow coastal areas. At the same time, the fragile and rapidly growing Acropora cervicornis and other corals flourished at greater depths on the more protected shelves of the western Caribbean and the Gulf of Mexico. As a result, late Holocene buildups more than 30 m thick developed in those areas. 7 figures.

  6. A bottom-driven mechanism for distributed faulting: Insights from the Gulf of California Rift

    Science.gov (United States)

    Persaud, P.; Tan, E.; Choi, E.; Contreras, J.; Lavier, L. L.

    2017-12-01

    The Gulf of California is a young oblique rift that displays a variation in rifting style along strike. Despite the rapid localization of strain in the Gulf at 6 Ma, the northern rift segment has the characteristics of a wide rift, with broadly distributed extensional strain and small gradients in topography and crustal thinning. Observations of active faulting in the continent-ocean transition of the Northern Gulf show multiple oblique-slip faults distributed in a 200 x 70 km2area developed some time after a westward relocation of the plate boundary at 2 Ma. In contrast, north and south of this broad pull-apart structure, major transform faults accommodate Pacific-North America plate motion. Here we propose that the mechanism for distributed brittle deformation results from the boundary conditions present in the Northern Gulf, where basal shear is distributed between the Cerro Prieto strike-slip fault (southernmost fault of the San Andreas fault system) and the Ballenas Transform fault. We hypothesize that in oblique-extensional settings whether deformation is partitioned in a few dip-slip and strike-slip faults, or in numerous oblique-slip faults may depend on (1) bottom-driven, distributed extension and shear deformation of the lower crust or upper mantle, and (2) the rift obliquity. To test this idea, we explore the effects of bottom-driven shear on the deformation of a brittle elastic-plastic layer with pseudo-three dimensional numerical models that include side forces. Strain localization results when the basal shear is a step-function while oblique-slip on numerous faults dominates when basal shear is distributed. We further investigate how the style of faulting varies with obliquity and demonstrate that the style of faulting observed in the Northern Gulf of California is reproduced in models with an obliquity of 0.7 and distributed basal shear boundary conditions, consistent with the interpreted obliquity and boundary conditions of the study area. Our

  7. The Gulf War Nuclear, Biological, and Chemical Lessons Learned

    National Research Council Canada - National Science Library

    Ugone, Mary

    2001-01-01

    This audit was requested by the Office of the Special Assistant for Gulf War Illnesses, Medical Readiness and Military Deployments, which has the authority to coordinate all aspects of Gulf War investigations for DoD...

  8. utilization of Western and Traditional healthcare services by farm

    African Journals Online (AJOL)

    PLOUGHMAN

    Most respondent accessed information on Western health care services .... factors to smooth or access to western orthodox health care services? ..... Food and Agricultural Organization(FAO) (2000) Project Concept Proposal - HEAL: Health in.

  9. Astronaut observations of the Persian (Arabian) Gulf during STS-45

    Science.gov (United States)

    Ackleson, Steven G.; Pitts, David E.; Sullivan, Kathryn D.; Reynolds, R. M.

    1992-01-01

    As a result of the 1991 Persian Gulf war, between mid-January and June 1991, the Persian Gulf was contaminated with an estimated 4 to 6 million barrels of crude oil, released directly into the Gulf from refinement facilities, transhipment terminals, and moored tankers along the coast of Kuwait, and precipitated from oil fire smoke plumes. To assess the environmental impact of the oil, an international team of marine scientists representing 14 nations was assembled under the auspices of the United Nations International Oceanic Commission and the Regional Organization for Protection of the Marine Environment to conduct detailed surveys of the Persian Gulf, the Strait of Hormuz, and the Gulf of Oman, including hydrographic, chemical, and biological measurements. To supplement the field surveys and to serve as an aid in data interpretation, astronauts aboard the Space Shuttle Atlantis photographed water features and coastal habitats in the Persian Gulf during mission STS-45 (24 March to 02 April 1992). The astronauts collected 111 hand-held, color photographs of the Gulf (72 70-mm photographs and 39 5-inch photographs) from an altitude of 296 km (160 n.mi.). The photographs reveal distributions in water turbidity associated with outflow from the Shatt-al-Arab and water circulation along the entire coast of Iran and the Strait of Hormuz, coastal wetlands and shallow-water habitats, and sticks appearing in the sunglint pattern, which appear to be oil.

  10. 78 FR 14980 - Gulf of Mexico Fishery Management Council; Public Meetings

    Science.gov (United States)

    2013-03-08

    .... SUMMARY: The Gulf of Mexico Fishery Management Council will convene scoping meetings to discuss a For-Hire... through April 3, 2013 at eight locations throughout the Gulf of Mexico. The scoping meetings will begin at..., TX. Council address: Gulf of Mexico Fishery Management Council, 2203 N. Lois Avenue, Suite 1100...

  11. Multiscale and multidisciplinary Marine Rapid Environmental Assessment data collection methods for process studies: the case of the Taranto Gulf

    Science.gov (United States)

    Federico, Ivan; Maicu, Francesco; Pinardi, Nadia; Lyubartsev, Vladyslav; Causio, Salvatore; Caporale, Claudio; Demarte, Maurizio; Falconieri, Alfredo; Lecci, Rita; Lacava, Teodosio; Lisi, Matteo; Sepp-Neves, Augusto; Lorenzetti, Giuliano; Manfe', Giorgia; Trotta, Francesco; Zaggia, Luca; Ciliberti, Stefania Angela; Fratianni, Claudia; Grandi, Alessandro

    2017-04-01

    The present work aims to investigate the thermohaline properties and the circulation of the Gulf of Taranto, which is a deep, semi-enclosed ocean area in the northern Ionian sea, encircled by two Italian peninsulas of southern Apulia and Calabria. Since few observations in the past have been reported in the Gulf of Taranto, it emerged the need of planning and implementing oceanographic cruises in this area, based on an innovative concept of MREA (Marine Rapid Environmental Assessment). The methodology was based on an optimal experimental strategy to collect definitive evidences on ocean mesoscales with a spatial-and-time synoptic coverage. The MREA surveys have been performed thanks to the synergies between Italian oceanographic research centers and the Italian Navy Hydrographic Institute. Starting from the experience and results of MREA14 (Pinardi et al., 2016), which have shown in the Gulf an anticyclonic circulation in Autumn (October 2014) and the presence of submesoscale structure, a new experiment (MREA16) was repeated in a different season (Summer, June-July 2016), evaluating possible changes in current circulation. Furthermore, the new sampling methodology was refined and strengthened integrating the classical CTD data collection with additional simultaneous measurements of currents by means of vessel-mounted ADCP. The geostrophic circulation pattern derived from the CTD objective-analysis mapping techniques has been verified with the ADCP measurements. Moreover, the analysis on circulation fields confirms the presence of possible submesoscale structures, which can be well solved by a high-resolution sampling scheme. The MREA investigation in Gulf of Taranto shows a large-scale gyre anticyclonically-oriented in Autumn (MREA14) and cyclonically-oriented in Summer (MREA16). This opposite circulation pattern is probably connected to (i) the impact of Western Adriatic Coastal Current (WACC), (ii) the effect of the Northern Ionian Sea outflow-inflow system in

  12. Cold Outbreaks at the Mesoscale in the Western Mediterranean Basin: From Raincells to Rainbands

    Directory of Open Access Journals (Sweden)

    Jordi Mazon

    2017-01-01

    Full Text Available This paper investigates cold outbreaks that form offshore density currents within the whole mesoscale over the Western Mediterranean basin. Reflectivity radar and satellite images are used to detect clouds and precipitation that are associated with these density currents in the meso-α, meso-β, and meso-γ over the Western Mediterranean basin (WMB. Version 3.3 of the WRF-ARW model is used to describe the formation and evolution of these density currents and to estimate their lifetime as well as horizontal and vertical scales. Based on the observations and simulations, this paper suggests that a new perspective could effectively be adopted regarding the WMB region delineated by the Balearic Islands, the northeastern Iberian Peninsula, and the Gulf of Lion, where inland cold outbreaks develop into density currents that move offshore and can produce precipitation ranging from raincells to rainbands at the whole mesoscale.

  13. The deepwater Gulf of Mexico : promises delivered?

    International Nuclear Information System (INIS)

    Pickering, D.R.

    1999-01-01

    A summary review of deepwater Gulf of Mexico (GOM) oil production was presented for the years 1989 to 1998. Trends and prospects in deepwater GOM production and leasing were assessed. Promises and forecasts made in the early 1990s were compared with what actually happened since then. Forecasts in the early 1990s promised deeper, faster and cheaper developments in the deepwater Gulf. Results of the comparison showed that the prognosticators were correct on all three counts. Regarding the future of the Gulf, one can be justified in being optimistic in so far as more experience, robust economics, more and cheaper rigs can be taken as reliable indicators of optimism. In contrast, there are certain negatives to consider, such as low commodity prices, budget constraints, lease expirations, technical challenges and increased competition. . 12 figs

  14. Ground Motion Prediction Equations for Western Saudi Arabia from a Reference Model

    Science.gov (United States)

    Kiuchi, R.; Mooney, W. D.; Mori, J. J.; Zahran, H. M.; Al-Raddadi, W.; Youssef, S.

    2017-12-01

    Western Saudi Arabia is surrounded by several active seismic zones such as the Red Sea and the Gulf of Aqaba where a destructive magnitude 7.3 event occurred in 1995. Over the last decade, the Saudi Geological Survey (SGS) has deployed a dense seismic network that has made it possible to monitor seismic activity more accurately. For example, the network has detected multiple seismic swarms beneath the volcanic fields in western Saudi Arabia. The most recent damaging event was a M5.7 earthquake that occurred in 2009 at Harrat Lunayyir. In terms of seismic hazard assessment, Zahran et al. (2015; 2016) presented a Probabilistic Seismic Hazard Assessment (PSHA) for western Saudi Arabia that was developed using published Ground Motion Prediction Equations (GMPEs) from areas outside of Saudi Arabia. In this study, we consider 41 earthquakes of M 3.0 - 5.4, recorded on 124 stations of the SGS network, to create a set of 442 peak ground acceleration (PGA) and peak ground velocity (PGV) records with a range of epicentral distances from 3 km to 400 km. We use the GMPE model BSSA14 (Boore et al., 2014) as a reference model to estimate our own best-fitting coefficients from a regression analysis using the events occurred in western Saudi Arabia. For epicentral distances less than 100 km, our best fitting model has different source scaling in comparison with the GMPE of BSSA14 adjusted for the California region. In addition, our model indicates that the peak amplitudes have less attenuation in western Saudi Arabia than in California.

  15. Pollution in the Gulf: Monitoring the marine environment

    International Nuclear Information System (INIS)

    Fowler, S.W.

    1993-01-01

    More than 2 years after the Gulf conflict, scientists are continuing to keep a close watch on marine pollution stemming from the war. Following the conflict in early 1991, major concern was raised worldwide when an estimated four to eight million barrels of crude oil were directly released into the Persian Gulf from the Sea Island terminal in Kuwait. Such amounts clearly made it the largest oil spill in history. The catastrophe was exacerbated when Kuwaiti oil fields were ignited. The magnitude of the pollution, and the types of toxic contaminants involved, led to a worldwide response through the United Nations system. An inter-agency plan of action was developed quickly. As one of its steps, the co-ordinating agency - the United Nations Environment Programme (UNEP) - asked the IAEA's Marine Environment Laboratory (MEL) in Monaco to help make a preliminary assessment of the situation. The Laboratory's main goal in initial surveys was to map the extent and general degree of the war-related pollution throughout the Gulf. Since the initial surveys were done, IAEA-MEL scientists have been engaged in regional follow-up activities in ongoing attempts to obtain a clearer picture of the oil pollution's effects on the Gulf's marine environment. This article highlights the laboratory's work in the Gulf following the 1991 conflict, within the context of co-operative programmes and projects. 1 fig

  16. DNA barcoding and morphological studies confirm the occurrence of three Atarbolana (Crustacea: Isopoda: Cirolanidae) species along the coastal zone of the Persian Gulf and Gulf of Oman.

    Science.gov (United States)

    Khalaji-Pirbalouty, Valiallah; Raupach, Michael J

    2016-11-27

    Two species of Atarbolana (Cirolanidae: Isopoda) from the intertidal zone of the Gulf of Oman and the Persian Gulf were studied and redescribed. The known distribution of this small genus is limited to the northern areas of the Indian Ocean, from the Pakistan coasts to the Persian Gulf. The analyses of DNA barcodes as well as detailed morphological studies clearly support the existence of three distinct Atarbolana species along the coastal zone of the Persian Gulf and northern Arabian Sea. Furthermore, A. dasycolus Yasmeen, 2004 is synonymized with A. setosa Javed and Yasmeen, 1989.

  17. Population Trend and Elasticities of Vital Rates for Steller Sea Lions (Eumetopias jubatus in the Eastern Gulf of Alaska: A New Life-History Table Analysis.

    Directory of Open Access Journals (Sweden)

    John M Maniscalco

    Full Text Available Steller sea lion (Eumetopias jubatus numbers are beginning to recover across most of the western distinct population segment following catastrophic declines that began in the 1970s and ended around the turn of the century. This study makes use of contemporary vital rate estimates from a trend-site rookery in the eastern Gulf of Alaska (a sub-region of the western population in a matrix population model to estimate the trend and strength of the recovery across this region between 2003 and 2013. The modeled population trend was projected into the future based on observed variation in vital rates and a prospective elasticity analysis was conducted to determine future trends and which vital rates pose the greatest threats to recovery. The modeled population grew at a mean rate of 3.5% per yr between 2003 and 2013 and was correlated with census count data from the local rookery and throughout the eastern Gulf of Alaska. If recent vital rate estimates continue with little change, the eastern Gulf of Alaska population could be fully recovered to pre-decline levels within 23 years. With density dependent growth, the population would need another 45 years to fully recover. Elasticity analysis showed that, as expected, population growth rate (λ was most sensitive to changes in adult survival, less sensitive to changes in juvenile survival, and least sensitive to changes in fecundity. A population decline could be expected with only a 6% decrease in adult survival, whereas a 32% decrease in fecundity would be necessary to bring about a population decline. These results have important implications for population management and suggest current research priorities should be shifted to a greater emphasis on survival rates and causes of mortality.

  18. Population Trend and Elasticities of Vital Rates for Steller Sea Lions (Eumetopias jubatus) in the Eastern Gulf of Alaska: A New Life-History Table Analysis.

    Science.gov (United States)

    Maniscalco, John M; Springer, Alan M; Adkison, Milo D; Parker, Pamela

    2015-01-01

    Steller sea lion (Eumetopias jubatus) numbers are beginning to recover across most of the western distinct population segment following catastrophic declines that began in the 1970s and ended around the turn of the century. This study makes use of contemporary vital rate estimates from a trend-site rookery in the eastern Gulf of Alaska (a sub-region of the western population) in a matrix population model to estimate the trend and strength of the recovery across this region between 2003 and 2013. The modeled population trend was projected into the future based on observed variation in vital rates and a prospective elasticity analysis was conducted to determine future trends and which vital rates pose the greatest threats to recovery. The modeled population grew at a mean rate of 3.5% per yr between 2003 and 2013 and was correlated with census count data from the local rookery and throughout the eastern Gulf of Alaska. If recent vital rate estimates continue with little change, the eastern Gulf of Alaska population could be fully recovered to pre-decline levels within 23 years. With density dependent growth, the population would need another 45 years to fully recover. Elasticity analysis showed that, as expected, population growth rate (λ) was most sensitive to changes in adult survival, less sensitive to changes in juvenile survival, and least sensitive to changes in fecundity. A population decline could be expected with only a 6% decrease in adult survival, whereas a 32% decrease in fecundity would be necessary to bring about a population decline. These results have important implications for population management and suggest current research priorities should be shifted to a greater emphasis on survival rates and causes of mortality.

  19. 78 FR 12085 - Environmental Documents Prepared for Oil, Gas, and Mineral Operations by the Gulf of Mexico Outer...

    Science.gov (United States)

    2013-02-21

    ... the Central Planning Area of the Gulf of Mexico. Energy Resource Technology GOM, Green Canyon, Block... on the Federal OCS. These SEAs examine the potential environmental effects of proposed activities and present BOEM conclusions regarding the significance of those effects. The SEAs are used as a basis for...

  20. Arab Gulf States : recruitment of Asian workers

    OpenAIRE

    JUREIDINI, Ray

    2014-01-01

    GLMM - Gulf Labour Markets and Migration This paper addresses a neglected area in studies of migrant labor in the Gulf States showing that exploitation of migrant workers occurs before deployment. Evidence from interviews conducted in the five major labour sending countries to Qatar (Philippines, Nepal, Bangladesh, Sri Lanka, and India) suggests that the recruitment procedures and corrupt practices by recruitment agencies and employing company personnel in the receiving country place unski...

  1. Spaceborne Sensors Track Marine Debris Circulation in the Gulf of Mexico

    Science.gov (United States)

    Reahard, Ross; Mitchell, Brandie; Lee, Lucas; Pezold, Blaise; Brook, Chris; Mallett, Candis; Barrett, Shelby; Albin, Aaron

    2011-01-01

    Marine debris is a problem for coastal areas throughout the world, including the Gulf of Mexico. To aid the NOAA Marine Debris Program in monitoring marine debris dispersal and regulating marine debris practices, sea surface height and height anomaly data provided by the Colorado Center for Astrodynamics Research at the University of Colorado, Boulder, were utilized to help assess trash and other discarded items that routinely wash ashore in southeastern Texas, at Padre Island National Seashore. These data were generated from the NASA radar altimeter satellites TOPEX/Poseidon, Jason 1, and Jason 2, as well as the European altimeter satellites ERS-1, ERS-2 (European Remote Sensing Satellite), and ENVISAT (Environmental Satellite). Sea surface temperature data from MODIS were used to study of the dynamics of the Loop Current. Sea surface height and MODIS data analysis were used to show that warm water in the core of eddies, which periodically separate from the Loop Current, can be as high as 30 cm above the surrounding water. These eddies are known to directly transfer marine debris to the western continental shelf and the elevated area of water can be tracked using satellite radar altimeter data. Additionally, using sea surface height, geostrophic velocity, and particle path data, foretracking and backtracking simulations were created. These simulation runs demonstrated that marine debris on Padre Island National Seashore may arise from a variety of sources, such as commercial fishing/shrimping, the oil and gas industry, recreational boaters, and from rivers that empty into the Gulf of Mexico.

  2. 75 FR 62109 - Gulf of Mexico Fishery Management Council (Council); Public Meetings

    Science.gov (United States)

    2010-10-07

    ... meetings. SUMMARY: The Gulf of Mexico Fishery Management Council (GMFMC) will convene public meetings... Embassy Suites Hotel, 4914 Constitution Ave., Baton Rouge, LA 70808. Council address: Gulf of Mexico... CONTACT: Dr. Stephen Bortone, Executive Director, Gulf of Mexico Fishery Management Council; telephone...

  3. 77 FR 40859 - Gulf of Mexico Fishery Management Council; Public Meetings; Correction

    Science.gov (United States)

    2012-07-11

    ... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration Gulf of Mexico Fishery.... SUMMARY: The Gulf of Mexico Fishery Management Council (Council) will convene its Law Enforcement Advisory... Ludwig Lane, Grand Isle, LA 70358; telephone: (985) 787-2163 Council address: Gulf of Mexico Fishery...

  4. The growth of coral reef science in the Gulf: a historical perspective.

    Science.gov (United States)

    Burt, John A

    2013-07-30

    Coral reef science has grown exponentially in recent decades in the Gulf. Analysis of literature from 1950 to 2012 identified 270 publications on coral reefs in the Gulf, half of which were published in just the past decade. This paper summarizes the growth and evolution of coral reef science in the Gulf by examining when, where and how research has been conducted on Gulf reefs, who conducted that research, and what themes and taxa have dominated scientific interest. The results demonstrate that there has been significant growth in our understanding of the valuable coral reefs of the Gulf, but also highlight the fact that we are documenting an increasingly degraded ecosystem. Reef scientists must make a concerted effort to improve dialogue with regional reef management and decision-makers if we are to stem the tide of decline in coral reefs in the Gulf. Copyright © 2013 Elsevier Ltd. All rights reserved.

  5. Use of a Florida Gulf Coast Barrier Island by Spring Trans-Gulf Migrants and the Projected Effects of Sea Level Rise on Habitat Availability.

    Directory of Open Access Journals (Sweden)

    Lori A Lester

    Full Text Available Barrier islands on the north coast of the Gulf of Mexico are an internationally important coastal resource. Each spring hundreds of thousands of Nearctic-Neotropical songbirds crossing the Gulf of Mexico during spring migration use these islands because they provide the first landfall for individuals following a trans-Gulf migratory route. The effects of climate change, particularly sea level rise, may negatively impact habitat availability for migrants on barrier islands. Our objectives were (1 to confirm the use of St. George Island, Florida by trans-Gulf migrants and (2 to determine whether forested stopover habitat will be available for migrants on St. George Island following sea level rise. We used avian transect data, geographic information systems, remote sensing, and simulation modelling to investigate the potential effects of three different sea level rise scenarios (0.28 m, 0.82 m, and 2 m on habitat availability for trans-Gulf migrants. We found considerable use of the island by spring trans-Gulf migrants. Migrants were most abundant in areas with low elevation, high canopy height, and high coverage of forests and scrub/shrub. A substantial percentage of forest (44% will be lost by 2100 assuming moderate sea level rise (0.82 m. Thus, as sea level rise progresses, less forests will be available for migrants during stopover. Many migratory bird species' populations are declining, and degradation of barrier island stopover habitat may further increase the cost of migration for many individuals. To preserve this coastal resource, conservation and wise management of migratory stopover areas, especially near ecological barriers like the Gulf of Mexico, will be essential as sea levels rise.

  6. Use of a Florida Gulf Coast Barrier Island by Spring Trans-Gulf Migrants and the Projected Effects of Sea Level Rise on Habitat Availability.

    Science.gov (United States)

    Lester, Lori A; Gutierrez Ramirez, Mariamar; Kneidel, Alan H; Heckscher, Christopher M

    2016-01-01

    Barrier islands on the north coast of the Gulf of Mexico are an internationally important coastal resource. Each spring hundreds of thousands of Nearctic-Neotropical songbirds crossing the Gulf of Mexico during spring migration use these islands because they provide the first landfall for individuals following a trans-Gulf migratory route. The effects of climate change, particularly sea level rise, may negatively impact habitat availability for migrants on barrier islands. Our objectives were (1) to confirm the use of St. George Island, Florida by trans-Gulf migrants and (2) to determine whether forested stopover habitat will be available for migrants on St. George Island following sea level rise. We used avian transect data, geographic information systems, remote sensing, and simulation modelling to investigate the potential effects of three different sea level rise scenarios (0.28 m, 0.82 m, and 2 m) on habitat availability for trans-Gulf migrants. We found considerable use of the island by spring trans-Gulf migrants. Migrants were most abundant in areas with low elevation, high canopy height, and high coverage of forests and scrub/shrub. A substantial percentage of forest (44%) will be lost by 2100 assuming moderate sea level rise (0.82 m). Thus, as sea level rise progresses, less forests will be available for migrants during stopover. Many migratory bird species' populations are declining, and degradation of barrier island stopover habitat may further increase the cost of migration for many individuals. To preserve this coastal resource, conservation and wise management of migratory stopover areas, especially near ecological barriers like the Gulf of Mexico, will be essential as sea levels rise.

  7. Military and Non Military Threats to the Gulf Cooperation Countries

    National Research Council Canada - National Science Library

    Al-Khulaifi, Hamad H

    2008-01-01

    The international strategic importance of Gulf oil resources, the intense political and economic attention to the Gulf Countries affairs by nations beyond the region, necessitate looking at the impact...

  8. Mercury in contaminated coastal environments; a case study: the Gulf of Trieste.

    Science.gov (United States)

    Horvat, M; Covelli, S; Faganeli, J; Logar, M; Mandić, V; Rajar, R; Sirca, A; Zagar, D

    1999-09-30

    Some general facts, uncertainties and gaps in current knowledge of Hg cycling in coastal and oceanic environments are given. As a case study the Gulf of Trieste is chosen. The Gulf is subject to substantial Hg pollution, originating from the Soca river, that drains the cinnabar deposits of the world's second largest Hg mining area, Idrija, Slovenia. The Gulf belongs to one of the most polluted areas in the Mediterranean. Apart from Hg problems, the Gulf is also a subject to industrial and sewage pollution. Due to deteriorating water quality in the Gulf there is a great concern that Hg can be remobilized from sediments to the water column as well as enhance methylation rates which may consequently increase already elevated Hg levels in aquatic organisms. The paper presents data from a recent study which aims to assess the extent of contamination of the Gulf of Trieste after the closure of the Hg mine. Mercury and methylmercury were measured in various environmental compartments (estuarine and marine waters, sediments, and organisms) during the period 1995-1997. Data obtained show that even 10 years after closure of the Hg mine, Hg concentrations in river sediments and water are still very high and did not show the expected decrease of Hg in the Gulf of Trieste. A provisional annual mercury mass balance was established for the Gulf of Trieste showing that the major source of inorganic mercury is still the River Soca (Isonzo) while the major source of methylmercury is the bottom sediment of the Gulf.

  9. Physical processes in the Gulf of Kachchh: A review

    Digital Repository Service at National Institute of Oceanography (India)

    Vethamony, P.; Babu, M.T.

    A brief review of various physical processes acting in the Gulf of Kachchh (GoK), which have prominent roles in Gulf dynamics, is presented in this article. The eddies present in the GoK confirm that they are permanent features of the Go...

  10. Carbon emissions from the Persian Gulf countries

    International Nuclear Information System (INIS)

    Al-Shatti, A.M.

    1991-01-01

    The wealth of indigenous oil resources has largely determined the economic and energy use patterns in the member countries of the Gulf Cooperation Council (GCC). Sizable profits accrued from the inflation of world oil prices spurred tremendous economic growth across the Gulf during the 1970s. The GCC nations channeled this oil wealth into the rapid development of infrastructure and the creation of super-welfare states. Today, these highly affluent societies enjoy benefits ranging from free medical care, schooling and housing to subsidized electricity and gasoline supplies. The combination of great personal prosperity, abundant petroleum resources and highly subsidized energy prices has led to excessive energy use in the Gulf nations. These countries consume among the highest amounts of energy per capita in the world. Correspondingly, these nations generate among the highest levels of energy-related carbon per capita

  11. 76 FR 37064 - Gulf of Mexico Fishery Management Council (Council); Public Meeting

    Science.gov (United States)

    2011-06-24

    ... meeting. SUMMARY: The Gulf of Mexico Fishery Management Council will convene a public meeting via webinar... meeting will be held via webinar. Council address: Gulf of Mexico Fishery Management Council, 2203 North... Executive Director, Gulf of Mexico Fishery Management Council; telephone: (813) 348-1630. SUPPLEMENTARY...

  12. Assessment of Tsunami-related Geohazard Assessment for Coasts of Hersek Peninsula and Gulf of İzmit

    Directory of Open Access Journals (Sweden)

    Cem Gazioğlu

    2017-05-01

    Full Text Available Tsunamis are one of the most dreadful natural disasters; they could cause abysmal damage to all kind of lives in the hinterland within instantly. It is a major right-lateral moving fault that runs along the tectonic boundary between the Eurasian Plate to the north and the Anatolian Plate to the south. The western segment of the North Anatolian Fault splits into three main branches. The northern one of NAF is generally subdivided in several subsegments that have been the source of frequent large historical earthquakes. The Sea of Marmara coasts is located on the western extension of the NAFZ which is one of the most important active faults with strike-slip characteristics, which are not likely to generate tsunami. However, in the light of tsunami catalogs based on historical documents, it is possible to say that Sea of Marmara has tsunamigenic potential. The İstanbul shorelines, Gemlik Bay, Kapıdağ N-NE shores, Gelibolu, Hersek Peinsula and Gulf of İzmit are one of the most significant geohazards in Sea of Marmara due to the tsunami effect.

  13. 75 FR 8789 - Research Advisory Committee on Gulf War Veterans' Illnesses; Notice of Meeting

    Science.gov (United States)

    2010-02-25

    ... DEPARTMENT OF VETERANS AFFAIRS Research Advisory Committee on Gulf War Veterans' Illnesses; Notice... Advisory Committee Act) that the Research Advisory Committee on Gulf War Veterans' Illnesses will meet on... theater of operations during the Gulf War. The Committee will review VA program activities related to Gulf...

  14. Long-term changes of fisheries landings in enclosed gulf lagoons (Amvrakikos gulf, W Greece): Influences of fishing and other human impacts

    Science.gov (United States)

    Katselis, George N.; Moutopoulos, Dimitrios K.; Dimitriou, Evagelos N.; Koutsikopoulos, Constantin

    2013-10-01

    The present study analyses long-term annual fishery landings time series (1980-2007) for species derived from six lagoons (covering about 70 km2) around an important European wetland, the fjord-like Amvrakikos gulf. Landing trends for most abundant species revealed that typical lagoon fish species-groups, such as Mugilidae (Mugil cephalus, Chelon labrosus, Liza saliens, Liza aurata and Liza ramada), eels (Anguilla anguilla) and Gobies (mainly Zosteriosessor ophiocephalus) had largely decreased, while the landings of Sparus aurata increased during the entire study period. These trends led to a significant change in species composition during recent years that might be attributed to large-scale climatic changes as well as serious anthropogenic impacts that degraded the water quality and altered the hydrology within the gulf and lagoons, the increase of fishing exploitation in Amvrakikos gulf, the expansion of aquaculture activities within the gulf, the application of new fishing management practices in lagoons, and the increase of fish-eating sea-bird populations. The findings are needed for the implementation of an efficient and integrated management tool for the study of coastal systems.

  15. Observing environmental change in of the Gulf of Maine: ICUC smartphone app

    Science.gov (United States)

    Want to help collect data on environmental change in the Gulf of Maine with your smartphone? The Gulf of Maine Council’s EcoSystem Indicator Partnership (ESIP) is growing the community of citizen scientists in the Gulf of Maine region through its new smartphone app: ICUC (...

  16. Report A, chemical oceanographic data from the Persian Gulf and Gulf of Oman from 17 April 1972 to 17 March 1978 (NODC Accession 7900091)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Temperature profile and chemical data were collected using bottle casts from NOAA Ship DELAWARE and other platforms in the Persian Gulf and Gulf of Oman from 17...

  17. Increased psychological distress among Danish Gulf War veterans--without evidence for a neurotoxic background. The Danish Gulf War Study

    DEFF Research Database (Denmark)

    Ishøy, Torben; Knop, Joachim; Suadicani, Poul

    2004-01-01

    INTRODUCTION: Compared with controls, up to six years after their return, Danish Gulf War veterans have a significantly higher prevalence of self-reported neuropsychological symptoms, potentially as a result of neurotoxic exposure during deployment. We tested the hypotheses that: 1) GW veterans...... of neuropsychological symptoms, and stratified according to SCL-90-R score, no trends were found suggesting reduced motor function with increasing symptoms. Of nine dimensions constructed on the basis of the SCL-90-R items, six were significantly associated with being a Gulf War veteran. Statistically, the strongest...... would perform less well than controls using a computerized neuromotor test battery; and that 2) GW veterans have a psychological profile different from that of controls. MATERIAL AND METHODS: A cross-sectional study of 686 subjects who had been deployed in the Persian Gulf within the period August 2...

  18. Good Order at Sea in the Gulf of Guinea

    DEFF Research Database (Denmark)

    Nordby, Johannes Riber; Lindskov Jacobsen, Katja

    In this chapter, we first outline the maritime security situation in the Gulf of Guinea region at present. It is examined in the context of Good Order at Sea. Second, we describe the most recent maritime security initiative launched during the Yaoundé Summit in 2013. During the summit, West...... and Central African states decided to establish six maritime zones along their coastline in order to improve the maritime security in the Gulf of Guinea. A process heavily supported by UN’s International Maritime Organisation (IMO). Finally, the chapter suggests that maritime security issues in the Gulf...

  19. Toward a quantitative and empirical dissolved organic carbon budget for the Gulf of Maine, a semienclosed shelf sea

    Science.gov (United States)

    Balch, William; Huntington, Thomas; Aiken, George; Drapeau, David; Bowler, Bruce; Lubelczyk, Laura; Butler, Kenna

    2016-02-01

    A time series of organic carbon export from Gulf of Maine (GoM) watersheds was compared to a time series of biological, chemical, bio-optical, and hydrographic properties, measured across the GoM between Yarmouth, NS, Canada, and Portland, ME, U.S. Optical proxies were used to quantify the dissolved organic carbon (DOC) and particulate organic carbon in the GoM. The Load Estimator regression model applied to river discharge data demonstrated that riverine DOC export (and its decadal variance) has increased over the last 80 years. Several extraordinarily wet years (2006-2010) resulted in a massive pulse of chromophoric dissolved organic matter (CDOM; proxy for DOC) into the western GoM along with unidentified optically scattering material (DOC in the GoM and Scotian Shelf showed the strong influence of the Gulf of Saint Lawrence on the DOC that enters the GoM. A deep plume of CDOM-rich water was observed near the coast of Maine which decreased in concentration eastward. The Forel-Ule color scale was derived and compared to the same measurements made in 1912-1913 by Henry Bigelow. Results show that the GoM has yellowed in the last century, particularly in the region of the extension of the Eastern Maine Coastal Current. Time lags between DOC discharge and its appearance in the GoM increased with distance from the river mouths. Algae were also a significant source of DOC but not CDOM. Gulf-wide algal primary production has decreased. Increases in precipitation and DOC discharge to the GoM are predicted over the next century.

  20. Predicting the retreat and migration of tidal forests along the northern Gulf of Mexico under sea-level rise

    Science.gov (United States)

    Doyle, T.W.; Krauss, K.W.; Conner, W.H.; From, A.S.

    2010-01-01

    Tidal freshwater forests in coastal regions of the southeastern United States are undergoing dieback and retreat from increasing tidal inundation and saltwater intrusion attributed to climate variability and sea-level rise. In many areas, tidal saltwater forests (mangroves) contrastingly are expanding landward in subtropical coastal reaches succeeding freshwater marsh and forest zones. Hydrological characteristics of these low-relief coastal forests in intertidal settings are dictated by the influence of tidal and freshwater forcing. In this paper, we describe the application of the Sea Level Over Proportional Elevation (SLOPE) model to predict coastal forest retreat and migration from projected sea-level rise based on a proxy relationship of saltmarsh/mangrove area and tidal range. The SLOPE model assumes that the sum area of saltmarsh/mangrove habitat along any given coastal reach is determined by the slope of the landform and vertical tide forcing. Model results indicated that saltmarsh and mangrove migration from sea-level rise will vary by county and watershed but greater in western Gulf States than in the eastern Gulf States where millions of hectares of coastal forest will be displaced over the next century with a near meter rise in relative sea level alone. Substantial losses of coastal forests will also occur in the eastern Gulf but mangrove forests in subtropical zones of Florida are expected to replace retreating freshwater forest and affect regional biodiversity. Accelerated global eustacy from climate change will compound the degree of predicted retreat and migration of coastal forests with expected implications for ecosystem management of State and Federal lands in the absence of adaptive coastal management.

  1. Gulf of Mexico Regional Collaborative Final Report

    Energy Technology Data Exchange (ETDEWEB)

    Judd, Kathleen S. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Judd, Chaeli [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Engel-Cox, Jill A. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Gulbransen, Thomas [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Anderson, Michael G. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Woodruff, Dana L. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Thom, Ronald M. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Guzy, Michael [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Hardin, Danny [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Estes, Maury [Pacific Northwest National Lab. (PNNL), Richland, WA (United States)

    2007-12-01

    This report presents the results of the Gulf of Mexico Regional Collaborative (GoMRC), a year-long project funded by NASA. The GoMRC project was organized around end user outreach activities, a science applications team, and a team for information technology (IT) development. Key outcomes are summarized below for each of these areas. End User Outreach; Successfully engaged federal and state end users in project planning and feedback; With end user input, defined needs and system functional requirements; Conducted demonstration to End User Advisory Committee on July 9, 2007 and presented at Gulf of Mexico Alliance (GOMA) meeting of Habitat Identification committee; Conducted significant engagement of other end user groups, such as the National Estuary Programs (NEP), in the Fall of 2007; Established partnership with SERVIR and Harmful Algal Blooms Observing System (HABSOS) programs and initiated plan to extend HABs monitoring and prediction capabilities to the southern Gulf; Established a science and technology working group with Mexican institutions centered in the State of Veracruz. Key team members include the Federal Commission for the Protection Against Sanitary Risks (COFEPRIS), the Ecological Institute (INECOL) a unit of the National Council for science and technology (CONACYT), the Veracruz Aquarium (NOAA’s first international Coastal Ecology Learning Center) and the State of Veracruz. The Mexican Navy (critical to coastal studies in the Southern Gulf) and other national and regional entities have also been engaged; and Training on use of SERVIR portal planned for Fall 2007 in Veracruz, Mexico Science Applications; Worked with regional scientists to produce conceptual models of submerged aquatic vegetation (SAV) ecosystems; Built a logical framework and tool for ontological modeling of SAV and HABs; Created online guidance for SAV restoration planning; Created model runs which link potential future land use trends, runoff and SAV viability; Analyzed SAV

  2. 76 FR 60807 - Gulf of Mexico Fishery Management Council; Public Meeting; Correction

    Science.gov (United States)

    2011-09-30

    ... to a Council meeting. SUMMARY: The Gulf of Mexico Fishery Management Council will convene a meeting... Thursday, October 13, 2011. ADDRESSES: The meeting will be held at the Gulf of Mexico Fishery Management Council, 2203 North Lois Avenue, Suite 1100, Tampa, FL 33607. Council address: Gulf of Mexico Fishery...

  3. Central Gulf of Mexico lease sale draws weak industry response

    International Nuclear Information System (INIS)

    Koen, A.D.

    1992-01-01

    This paper reports that interest in oil and gas leases in the Gulf of Mexico continued spiraling downward at the latest Minerals Management Service offshore sale. Companies participating in Outer Continental Shelf Sale 139 last week in New Orleans offered 196 bids for 151 blocks in the central Gulf of Mexico. MMS offered 5,213 blocks for lease. The number of tracts receiving bids was the fewest at a central gulf lease sale since 114 tracts garnered high bids totaling $146.4 million at Sale 104 in April 1986. Apparent high bids in Sale 139 totaled $56,195,552, and all bids offered totaled just $65,300,864. Both bidding totals were the lowest in a Gulf of Mexico lease sale since MMS began area-wide gulf leasing at Sale 72 in May 1983. Only 64 of 93 qualified companies participated in Sale 139. Fifty-five companies offered apparent winning bids. By comparison, 123 companies at central gulf lease Sale 131 in March 1991 offered 637 bids totaling $320.5 million for 464 tracts. Apparent high bids last spring totaled $259.9 million. At central gulf lease Sale 123 in March 1990, high bids totaled $427.4 million for 538 tracts. In that sale, BP Exploration Inc. led all bidders, exposing $78 million in 79 high bids, including 60 for deepwater tracts. Since then, interest in deepwater tracts has waned in part because of sagging oil and gas prices as U.S. operators sought bigger prospects outside the U.S. Ironically, Sale 139 was dominated by the U.S. subsidiary of an Italian holding company

  4. Future role of Gulf oil in world energy demand

    International Nuclear Information System (INIS)

    Eltony, M.N.

    1998-01-01

    The view that there will be a growing dependence on oil from the Gulf countries is shared by a great number of oil market analysts. This view is based on the fact that Gulf countries dominate the global oil reserves. Energy analyst argue that as the world demand for oil continues to grow driven largely by the growth in developing countries' consumption coupled with constrained non-OPEC supply, the end result will be that the call on Gulf oil will grow substantially. In summary, this paper has challenged the view of growing dependence on oil from the Gulf using available information in conjunction with reasonable and fairly plausible arguments. The aim was to point out to the GCC member counties the danger of relying on these views in shaping their economic policies and in setting their oil market strategies. They may run the ultimate risk of being left with huge oil reserves that no one wants. (orig.)

  5. 76 FR 45551 - Post-2014 Resource Pool; Loveland Area Projects, Proposed Power Allocation

    Science.gov (United States)

    2011-07-29

    ... Proposed Power Allocation. SUMMARY: Western Area Power Administration (Western), a Federal power marketing... Pool Proposed Power Allocation developed under the requirements of the Power Marketing Initiative of... resulted in this Notice of Proposed Power Allocation. DATES: The comment period on this Notice of Proposed...

  6. A GIS Approach for Reconstructing the Litorina Sea Lagoon in Tolkuse-Rannametsa Area, Eastern Gulf of Riga.

    Science.gov (United States)

    Habicht, Hando-Laur; Rosentau, Alar; Jõeleht, Argo; Hang, Tiit; Kohv, Marko

    2015-04-01

    The eastern coast of the Gulf of Riga in the NE Baltic Sea is characterized by slow post-glacial isostatic uplift (about 1mm/yr) and slowly undulating low topography. Therefore even small increases in sea-level can easily lead to the flooding of considerable areas. The complex deglaciation history of the Baltic Sea area left, at times, south western Estonia submerged, while at other times, it emerged as terrestrial land. Different transgressive and regressive development stages of the Baltic Sea did not only shape the landscape, but also influenced the locations of the Stone Age settlements which were closely bound to the coastal areas which also include estuaries and lagoonal systems. The coastal region of the Gulf of Riga is abundant in Meso- and Neolithic settlement sites. The present study combines LiDAR, ground-penetrating radar (GPR) and geological data to reconstruct development of the Litorina Sea lagoon in Tolkuse-Rannametsa area and to create prognostic palaeogeographic maps in order to search for Meso- and Neolithic coastal settlement sites. Over 47 km of GPR profiling was done; sediments were described and dated in 37 cores two riverbank outcrops. Diatoms were analysed in the master core. A semi-automatic method for the removal of modern anthropogenic features from LiDAR derived digital elevation model (DEM) was developed, tested and used. In modelling process the impact of sedimentary processes subsequent to the time being modelled was taken into account by employing a backstripping methodology. The differential glacio-isostatic uplift within the study area was taken into account by using interpolated water-level surfaces. Palaeogeographic reconstructions shed new light into region's post-glacial coastal evolution and enabled us to suggest the possible locations of the Stone Age settlements with some of the proposed areas buried under up to 3 m thick peat layer. The results of the current study provide new chronological and shore displacement data

  7. Energy benchmarking for shopping centers in Gulf Coast region

    International Nuclear Information System (INIS)

    Juaidi, Adel; AlFaris, Fadi; Montoya, Francisco G.; Manzano-Agugliaro, Francisco

    2016-01-01

    Building sector consumes a significant amount of energy worldwide (up to 40% of the total global energy); moreover, by the year 2030 the consumption is expected to increase by 50%. One of the reasons is that the performance of buildings and its components degrade over the years. In recent years, energy benchmarking for government office buildings, large scale public buildings and large commercial buildings is one of the key energy saving projects for promoting the development of building energy efficiency and sustainable energy savings in Gulf Cooperation Council (GCC) countries. Benchmarking would increase the purchase of energy efficient equipment, reducing energy bills, CO_2 emissions and conventional air pollution. This paper focuses on energy benchmarking for shopping centers in Gulf Coast Region. In addition, this paper will analyze a sample of shopping centers data in Gulf Coast Region (Dubai, Ajman, Sharjah, Oman and Bahrain). It aims to develop a benchmark for these shopping centers by highlighting the status of energy consumption performance. This research will support the sustainability movement in Gulf area through classifying the shopping centers into: Poor, Usual and Best Practices in terms of energy efficiency. According to the benchmarking analysis in this paper, the shopping centers best energy management practices in the Gulf Coast Region are the buildings that consume less than 810 kW h/m"2/yr, whereas the poor building practices are the centers that consume greater than 1439 kW h/m"2/yr. The conclusions of this work can be used as a reference for shopping centres benchmarking with similar climate. - Highlights: •The energy consumption data of shopping centers in Gulf Coast Region were gathered. •A benchmarking of energy consumption for the public areas for the shopping centers in the Gulf Coast Region was developed. •The shopping centers have the usual practice in the region between 810 kW h/m"2/yr and 1439 kW h/m"2/yr.

  8. 78 FR 12294 - Gulf of Mexico Fishery Management Council (Council); Public Meetings

    Science.gov (United States)

    2013-02-22

    ... meetings. SUMMARY: The Gulf of Mexico and South Atlantic Fishery Management Councils will convene a Science.... to 4 p.m. EST on Tuesday, March 12, 2013. ADDRESSES: The meeting will be held at the Gulf of Mexico.... Council address: Gulf of Mexico Fishery Management Council, 2203 North Lois Avenue, Suite 1100, Tampa, FL...

  9. Biomarker Discovery in Gulf War Veterans: Development of a War Illness Diagnostic Panel

    Science.gov (United States)

    2016-12-01

    Award Number: W81XWH-12-1-0382 TITLE: Biomarker Discovery in Gulf War Veterans: Development of a War Illness Diagnostic Panel PRINCIPAL...SUBTITLE Biomarker Discovery in Gulf War Veterans: Development of a War Illness Diagnostic Panel 5a. CONTRACT NUMBER W81XWH-12-1-0382 5b. GRANT...of the 1990-1991 Gulf War are affected by Gulf War illness (GWI), the chronic condition currently defined only by veterans’ self-reported symptoms

  10. Effect of Diet on Gulf War Illness: A Pilot Study

    Science.gov (United States)

    2017-10-01

    Award Number: W81XWH-15-1-0636 TITLE: Effect of Diet on Gulf War Illness: A Pilot Study PRINCIPAL INVESTIGATOR: Ashok Tuteja, M.D. M.P.H...CONTRACT NUMBER Effect of Diet on Gulf War Illness 5b. GRANT NUMBER W81XWH-15-1-0636 5c. PROGRAM ELEMENT NUMBER 6 . AUTHOR(S) 5d. PROJECT NUMBER...headache) in Veterans with Gulf War Illness. We will also determine if the change in gut flora is a mechanism for improvement in symptoms of IBS and GW

  11. Environmental impacts of tourism in the Gulf and the Red Sea.

    Science.gov (United States)

    Gladstone, William; Curley, Belinda; Shokri, Mohammad Reza

    2013-07-30

    The Gulf and Red Sea possess diverse coastal and marine environments that support rapidly expanding mass tourism. Despite the associated environmental risks, there is no analysis of the tourism-related literature or recent analysis of impacts. Environmental issues reported in 101 publications (25 from the Gulf, 76 from the Red Sea) include 61 purported impacts (27 from the Gulf, 45 from the Red Sea). Gulf literature includes quantitative studies (68% publications) and reviews (32%), and addresses mostly land reclamation and artificial habitats. Most Gulf studies come from Iran and UAE (64%). Red Sea literature includes quantitative studies (81%) and reviews (11%), with most studies occurring in Egypt (70%). The most published topics relate to coral breakage and its management. A full account of tourism's environmental impacts is constrained by limited tourism data, confounding of impacts with other coastal developments, lack of baseline information, shifting baselines, and fragmentation of research across disciplines. Copyright © 2012 Elsevier Ltd. All rights reserved.

  12. Gulf War syndrome: an emerging threat or a piece of history?

    Science.gov (United States)

    Greenberg, N; Wessely, S

    2008-01-01

    Gulf War syndrome’ is a phrase coined after the 1991 Gulf War to group together disparate, unexplained health symptoms in Gulf veterans. This paper examines the many hypotheses that have been put forward about the origins of the concept and gives an overview of the studies that have attempted to explain the lasting health effects associated with Gulf service. Our review finds that although in the UK there has not yet been evidence of a new Gulf War syndrome as a result of the current conflicts in Iraq and Afghanistan, there is a rise in post-conflict psychiatric disorders now being reported in the USA. We postulate that after conflicts military personnel will always face some form of post-conflict syndrome and the nature of the threats experienced is likely to dictate the form the syndrome might take. We also postulate that media reporting is likely to have influenced and to continue unhelpfully to influence the health of service personnel. PMID:22460210

  13. Seafloor monitoring for synthetic-based mud discharged in the Western Gulf of Mexico

    International Nuclear Information System (INIS)

    Candler, J.E.; Hoskin, S.; Churan, M.

    1995-01-01

    Synthetic-based muds have been used to simultaneously improve drilling and environmental performance. The fate and effects of synthetic-based mud discharges in the marine environment have been issues of concern with the drilling industry and governmental agencies. Most of the environmental data on synthetic-based muds have been generated under laboratory conditions. This study uses field-collected data to investigate, the fate and effects of a polyalphaolefin synthetic-based drilling fluid. The first well drilled in the Gulf of Mexico using synthetic-based mud was completed in June 1992. Approximately 441 bbl of cuttings and 354 bbl of synthetic-based mud were discharged over a 9-day period. Three sampling trips have been made to the discharge location to collect sediment samples for chemical and biological analysis over a 2-year period. The sediment samples were analyzed for content of organic compounds and barium. On the third trip, infaunal samples were also taken. Information collected from the chemical and biological analysis is documented and compared to similar field studies performed on oil-based and water-based muds. Sampling techniques and analytical protocols are described to facilitate future studies. Two years after discharges of synthetic-based cuttings were completed, an area within 50 m of the discharge point continued to exhibit alterations in the benthic community not normally associated with water-based mud discharges. However, the study indicates that polyalphaolefin synthetic-based mud exhibits significant improvements over oil-based mud in terms of removal of organic contamination and minimization of adverse effects on the benthic community

  14. Use of Cu/Zn-superoxide dismutase tool for biomonitoring marine environment pollution in the Persian Gulf and the Gulf of Oman.

    Science.gov (United States)

    Zeinali, Farrokhzad; Homaei, Ahmad; Kamrani, Ehsan; Patel, Seema

    2018-04-30

    Superoxide dismutase (SOD) is the pivotal antioxidant enzyme that defends organisms against the oxidative stresses of superoxide radicals. In this experimental study, purification of SOD from the leaves of Avicennia marina (grey mangrove or white mangrove) from the family Acanthaceae, located in Sirik mangrove forest on the shore of the Gulf of Oman was performed, for the intended characterization of SOD. The Sirik AmSOD (A. marina SOD) expressed optimum activity in the pH range of 6-9 with the maximum activity at pH 8. The optimal temperature for Sirik AmSOD activity was 70°C. Comparison of the pH and temperature optima in two regions (the Persian Gulf and the Gulf of Oman) showed significant differences with P<0.05. The SOD from the Persian Gulf was more resistant against the environmental stressors, because of the biochemical adaption to this environment, which is harsher. The evidence from these results suggests that AmSOD has different characteristics in each place, and mangroves undergo different adaptations and require different protections. The results of the enzymatic research can be useful for ecological management of organisms. Copyright © 2018 Elsevier Inc. All rights reserved.

  15. GAOCMAO and its oil spill response activities in the Gulf

    International Nuclear Information System (INIS)

    Al-Sada, M.S.

    1994-01-01

    Gulf Area Oil Companies Mutual Aid Organisation (GAOCMAO), has taken active steps in cooperation with its member companies, national and regional environmental organisation (ROPME) in an attempt to protect the Gulf from various sources of pollution. Specific attention was given to oil pollution response in terms of stockpiling of adequate equipment, training of personal and coordination through the application of pre-prepared contingency plans. All these activities tell us that a lot has been done to protect the Gulf environment from pollution. GAOCMAO, after many years of successful development looks to the future with confidence and renewed vigor. It is the intention of this organisation to enhance its member companies capabilities to respond to major incidents and to work closely with the national governmental, regional and international environmental organisations throughout the world, in fields appropriate to the Gulf oil industry. (author)

  16. Reproduction of Persian Gulf anemone fish (Amphiprion clarkii) in captive system

    OpenAIRE

    Javad Sahandi

    2011-01-01

    The present study was carried out to assess the reproduction of Persian Gulf anemone fish,Amphiprion clarkii (Bennett, 1830), in captive conditions with artificial features. Persian Gulf, havinggood relation with Indian Ocean, is one of the important niches of fishes and the specific position ofthis Gulf makes its fishes popular. The yellow tail clown fish which originates to this gulf has the bestsurvival rate and health than the other areas. Live food is the most important factor in product...

  17. Africa and Arab Gulf states : divergent development paths and prospects for convergence

    OpenAIRE

    Fofack, Hippolyte

    2009-01-01

    In spite of the similarities between Sub-Saharan Africa and the Arab Gulf region (Gulf Cooperation Council states), development policies implemented in these two regions of the world have produced markedly different and even divergent outcomes. While Gulf Cooperation Council states have drawn on hydrocarbon revenues to dramatically transform their economic landscape, Sub-Saharan African co...

  18. Gulf war illness--better, worse, or just the same? A cohort study.

    Science.gov (United States)

    Hotopf, Matthew; David, Anthony S; Hull, Lisa; Nikalaou, Vasilis; Unwin, Catherine; Wessely, Simon

    2003-12-13

    Firstly, to describe changes in the health of Gulf war veterans studied in a previous occupational cohort study and to compare outcome with comparable non-deployed military personnel. Secondly, to determine whether differences in prevalence between Gulf veterans and controls at follow up can be explained by greater persistence or greater incidence of disorders. Occupational cohort study in the form of a postal survey. Military personnel who served in the 1991 Persian Gulf war; personnel who served on peacekeeping duties to Bosnia; military personnel who were deployed elsewhere ("Era" controls). All participants had responded to a previous survey. United Kingdom. Self reported fatigue measured on the Chalder fatigue scale; psychological distress measured on the general health questionnaire, physical functioning and health perception on the SF-36; and a count of physical symptoms. Gulf war veterans experienced a modest reduction in prevalence of fatigue (48.8% at stage 1, 43.4% at stage 2) and psychological distress (40.0% stage 1, 37.1% stage 2) but a slight worsening of physical functioning on the SF-36 (90.3 stage 1, 88.7 stage 2). Compared with the other cohorts Gulf veterans continued to experience poorer health on all outcomes, although physical functioning also declined in Bosnia veterans. Era controls showed both lower incidence of fatigue than Gulf veterans, and both comparison groups showed less persistence of fatigue compared with Gulf veterans. Gulf war veterans remain a group with many symptoms of ill health. The excess of illness at follow up is explained by both higher incidence and greater persistence of symptoms.

  19. Variability in north tropical atlantic over the last 20 000 years and holocene gulf stream activity; Variabilite au cours des derniers 20 000 ans de l'hydrologie de l'atlantique tropical nord et de l'activite du gulf stream a partir de la composition isotopique de l'oxygene et de la composition en elements trace des foraminferes planctoniques profonds

    Energy Technology Data Exchange (ETDEWEB)

    Cleroux, C

    2007-10-15

    Modern oceanographical studies shown that most of the ocean heat content in the North Atlantic Western Boundary Current region is stored in the upper 400 meters. To study past heat content and Gulf Stream activity, we performed coupled analyses of oxygen isotopic and trace elemental composition on several foraminifera species to reconstruct upper water column temperature and salinity. Calcification depths of Globorotalia inflata, Globorotalia truncatulinoides and Pulleniatina obliquiloculata have been constrain by correlating modern hydrographic data to oxygen isotopic measurement of North Atlantic core-top samples. We found that the three deep-dwelling foraminifera species have a preferred habitat at the base of the seasonal thermocline (Cleroux et al, 2007). The same set of North Atlantic core-tops has been used to define relationships between trace elemental compositions and temperature. We established calibrations between Mg/Ca ratio or Sr/Ca ratio and temperature for the three deep-dwelling foraminifera (Cleroux et al, submitted). We apply this strategy on the core MD99-2203 located off Cape Hatteras where the Gulf Stream separate from the United States coast. High-resolution surface reconstructions over the Holocene show low amplitude periodic temperature and salinity changes that could be related to NAO type mechanisms. Large hydrological changes in sub-surface reflect variations of Labrador current and Mode Water influences. Using recent studies on Mode Water formation and Gulf Stream heat advection, we interpret our results in term of ocean heat content and Gulf Stream activity. (author)

  20. Initial evaluations of a Gulf of Mexico/Caribbean ocean forecast system in the context of the Deepwater Horizon disaster

    Science.gov (United States)

    Zaron, Edward D.; Fitzpatrick, Patrick J.; Cross, Scott L.; Harding, John M.; Bub, Frank L.; Wiggert, Jerry D.; Ko, Dong S.; Lau, Yee; Woodard, Katharine; Mooers, Christopher N. K.

    2015-12-01

    In response to the Deepwater Horizon (DwH) oil spill event in 2010, the Naval Oceanographic Office deployed a nowcast-forecast system covering the Gulf of Mexico and adjacent Caribbean Sea that was designated Americas Seas, or AMSEAS, which is documented in this manuscript. The DwH disaster provided a challenge to the application of available ocean-forecast capabilities, and also generated a historically large observational dataset. AMSEAS was evaluated by four complementary efforts, each with somewhat different aims and approaches: a university research consortium within an Integrated Ocean Observing System (IOOS) testbed; a petroleum industry consortium, the Gulf of Mexico 3-D Operational Ocean Forecast System Pilot Prediction Project (GOMEX-PPP); a British Petroleum (BP) funded project at the Northern Gulf Institute in response to the oil spill; and the Navy itself. Validation metrics are presented in these different projects for water temperature and salinity profiles, sea surface wind, sea surface temperature, sea surface height, and volume transport, for different forecast time scales. The validation found certain geographic and time biases/errors, and small but systematic improvements relative to earlier regional and global modeling efforts. On the basis of these positive AMSEAS validation studies, an oil spill transport simulation was conducted using archived AMSEAS nowcasts to examine transport into the estuaries east of the Mississippi River. This effort captured the influences of Hurricane Alex and a non-tropical cyclone off the Louisiana coast, both of which pushed oil into the western Mississippi Sound, illustrating the importance of the atmospheric influence on oil spills such as DwH.

  1. "Soft Technology" and Criticism of the Western Model of Development

    Science.gov (United States)

    Harper, Peter

    1973-01-01

    Alternatives to the capitalistic Western model of develoment are suggested. Three problems afflicting Western society--alienation, resource exploitation, and eviornmental stability--are discussed and a model which advocates both political and technological change is proposed. (SM)

  2. Gulf Arab women's transition to motherhood.

    Science.gov (United States)

    Missal, Bernita

    2013-01-01

    This paper is a report of the findings of a study of Gulf Arab women's perspectives of the transition to motherhood. Transition to motherhood is a universal phenomenon in which every culture has its own expectations and varying supports for women moving through this transition. International studies have provided models or categories of maternal responses related to cultural aspects of transition to motherhood. However, no known research has focused on transition to motherhood among Gulf Arab women. In the initial cohort seventeen first time Gulf Arab mothers in the United Arab Emirates were interviewed during the following three times: before childbirth, two-four weeks after childbirth, and forty-days after childbirth. A second cohort of seventeen first time new mothers was interviewed after childbirth in Sultanate of Oman. Four patterns were identified as indicators of change as women transitioned into motherhood: 1) Women's personal transition: women changed from feeling of freedom to feeling of dependency to self-confidence. 2) Mother/baby relationships: women changed from fear, anxiety, and uncertainty to feelings of care and confidence. 3) Family influences: women experienced family support to being integrated and feeling respected by family. 4) Cultural/religious beliefs and practices: women felt they were initially observers of culture, to experiencing cultural/religious beliefs and practices. This was followed by accomplishment in childbearing and childrearing practices. As Gulf Arab new mothers made the transition to motherhood, four implications for international nursing practice emerged: 1) patient teaching to help relieve anxiety, fears, and uncertainty, 2) facilitation of mother/baby relationships, 3) family-centered care, and 4) the importance of cultural/religious beliefs and practices to new mothers.

  3. On the Loop Current Penetration into the Gulf of Mexico

    Science.gov (United States)

    Weisberg, Robert H.; Liu, Yonggang

    2017-12-01

    The Gulf of Mexico Loop Current generally intrudes some distance into the Gulf of Mexico before shedding an anticyclonic eddy and retreating back to its more direct entry to exit pathway. The control of this aperiodic process remains only partially known. Here we describe the evolution of the Loop Current throughout the era of satellite altimetry, and offer a mechanistic hypothesis on Loop Current intrusion. As a complement to the known effects of Loop Current forcing on the west Florida shelf circulation, we argue that the west Florida shelf, in turn, impacts the Loop Current evolution. A Self-Organizing Map analysis shows that anomalous northward penetrations of the Loop Current into the Gulf of Mexico occur when the eastern side of Loop Current is positioned west from the southwest corner of the west Florida shelf, whereas the more direct inflow to outflow route occurs when the eastern side of the Loop Current comes in contact with the southwest corner of the west Florida shelf. In essence, we argue that the west Florida shelf anchors the Loop Current in its direct path configuration and that farther northward penetration into the Gulf of Mexico occurs when such anchoring is released. To test of this hypothesis heuristically, we estimate that the dissipation and buoyancy work due to known Loop Current forcing of the west Florida shelf circulation (when in contact with the southwest corner) may exceed the pressure work required for the Loop Current to advance against the ambient Gulf of Mexico fluid.Plain Language SummaryThe Gulf of Mexico Loop Current may intrude far into the Gulf of Mexico or take a more direct entry to exit pathway. Such Loop Current behaviors are described using remote observations by satellites, and a heuristic hypothesis on the control of Loop Current intrusion is presented. We argue that energy dissipation and buoyancy work by the west Florida shelf circulation, when the Loop Current contacts the southwest corner of the west Florida shelf

  4. Investigating potential seismic hazard in the Gulf of Gökova (South Eastern Aegean Sea) deduced from recent shallow earthquake activity

    Science.gov (United States)

    Rontogianni, S.; Konstantinou, K. I.; Evangelidis, C.; Melis, N. S.

    2011-12-01

    concentrated to the south of the Gulf. The seismic activity moves at greater depths from the west to the inner part of the Gulf, from ~5 km to ~15 km. These observations indicate that the activity of the Datça fault has not been decelerated as previously proposed, but contrary there is a probable connection between GTF and the Fault of Kos. The fact that this is a 40° dipping fault, buried under thick 2.5 km sediment deposits, increases the possibility that a large earthquake could trigger a sediment landslide. Since the Gulf is quite narrow (~25 km N-S width), its expected effects could be devastating for the area. Further analysis of the major earthquake mechanisms is scheduled to be done, in order to investigate the potential hazard arising from this major fault.

  5. A Weighted Goal Programming model for planning sustainable development applied to Gulf Cooperation Council Countries

    International Nuclear Information System (INIS)

    Jayaraman, Raja; Colapinto, Cinzia; La Torre, Davide; Malik, Tufail

    2017-01-01

    Highlights: • Application of multi-criteria optimization model for sustainable development. • GHG emissions targets cannot be attainable due to reliance on hydrocarbon sources. • Provides quantitative evidence for future investments in green energy. • Application to Gulf Cooperation Countries. - Abstract: The United Nations agenda for sustainable development by the year 2030 proposes 17 sustainable development goals which include access to affordable, reliable and clean energy, sustained economic growth with full productive employment and, urgent action to mitigate environmental degradation. Planning for sustainable development requires integrating conflicting criteria on economy, energy, environment and social aspects. In this paper, we introduce a Weighted Goal Programming model involving criteria on the economic development (GDP), the electricity consumption, the greenhouse gas emissions, and the total number of employees to determine optimal labor allocation across various economic sectors. The proposed model is validated with data from the six members of the Gulf Cooperation Council (namely Bahrain, Kuwait, Oman, Qatar, Saudi Arabia and the United Arab Emirates). The results of the model aim to provide empirical evidence and insights to decision makers and policy analysts in developing optimal strategies able to simultaneously satisfy energy demand, economic growth, labor development and reduction in greenhouse gas emissions to achieve sustainability targets by the year 2030.

  6. Nekton from Fishery-Independent Trawl Samples in U.S. Gulf of Mexico Estuaries: A Comparative Assessment of Gulf Estuarine Systems (CAGES), 1973-2007 (NODC Accession 0115183)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The purpose of CAGES (Comparative Assessment of Gulf Estuarine Systems) is to compile the fishery independent data from five Gulf States into a database to more...

  7. Gulf Coast Clean Energy Application Center

    Energy Technology Data Exchange (ETDEWEB)

    Dillingham, Gavin [Houston Advanced Research Center, TX (United States)

    2013-09-30

    The Gulf Coast Clean Energy Application Center was initiated to significantly improve market and regulatory conditions for the implementation of combined heat and power technologies. The GC CEAC was responsible for the development of CHP in Texas, Louisiana and Oklahoma. Through this program we employed a variety of outreach and education techniques, developed and deployed assessment tools and conducted market assessments. These efforts resulted in the growth of the combined heat and power market in the Gulf Coast region with a realization of more efficient energy generation, reduced emissions and a more resilient infrastructure. Specific t research, we did not formally investigate any techniques with any formal research design or methodology.

  8. 77 FR 59185 - Gulf of Mexico Citizen Advisory Committee; Notice of Charter Renewal

    Science.gov (United States)

    2012-09-26

    ... ENVIRONMENTAL PROTECTION AGENCY [FRL-9734-9] Gulf of Mexico Citizen Advisory Committee; Notice of... with the provisions of the Federal Advisory Committee Act (FACA), 5 U.S.C. App.2, the Gulf of Mexico... the water quality and living resources of the Gulf of Mexico. FOR FURTHER INFORMATION CONTACT...

  9. Gulf war illness—better, worse, or just the same? A cohort study

    Science.gov (United States)

    Hotopf, Matthew; David, Anthony S; Hull, Lisa; Nikalaou, Vasilis; Unwin, Catherine; Wessely, Simon

    2003-01-01

    Objectives Firstly, to describe changes in the health of Gulf war veterans studied in a previous occupational cohort study and to compare outcome with comparable non-deployed military personnel. Secondly, to determine whether differences in prevalence between Gulf veterans and controls at follow up can be explained by greater persistence or greater incidence of disorders. Design Occupational cohort study in the form of a postal survey. Participants Military personnel who served in the 1991 Persian Gulf war; personnel who served on peacekeeping duties to Bosnia; military personnel who were deployed elsewhere (“Era” controls). All participants had responded to a previous survey. Setting United Kingdom. Main outcome measures Self reported fatigue measured on the Chalder fatigue scale; psychological distress measured on the general health questionnaire, physical functioning and health perception on the SF-36; and a count of physical symptoms. Results Gulf war veterans experienced a modest reduction in prevalence of fatigue (48.8% at stage 1, 43.4% at stage 2) and psychological distress (40.0% stage 1, 37.1% stage 2) but a slight worsening of physical functioning on the SF-36 (90.3 stage 1, 88.7 stage 2). Compared with the other cohorts Gulf veterans continued to experience poorer health on all outcomes, although physical functioning also declined in Bosnia veterans. Era controls showed both lower incidence of fatigue than Gulf veterans, and both comparison groups showed less persistence of fatigue compared with Gulf veterans. Conclusions Gulf war veterans remain a group with many symptoms of ill health. The excess of illness at follow up is explained by both higher incidence and greater persistence of symptoms. PMID:14670878

  10. Environmental assessment report on proposed Yeelirrie uranium project

    International Nuclear Information System (INIS)

    1979-01-01

    In accordance with Government requirements, Western Mining Corporation Ltd. has prepared a Draft Environmental Impact Statement/Environmental Review and Management Programme for its proposed uranium mine development at Yeelirrie, Western Australia. This report includes an outline of the proposal, an enviromental assessment, recommendations by the Environmental Protection Authority made after consideration of the Company's draft statement and a review of public and State Government Departmental Submissions received on the Yeelirrie EIS/ERMP

  11. Gulf War Illness and the Health of Gulf War Veterans

    Science.gov (United States)

    2008-11-01

    after his return.432 Seventy- five Gulf War personnel were hospitalized for chicken pox during deployment.1431 Only a few cases of viral hepatitis were...and independent of circulating uranium levels. Of particular interest are findings from an ongoing study at the University of New Mexico indicating that...periods, can produce chronic neurological or behavioral effects. The New Mexico study is an important example of a particularly relevant approach

  12. Gulf digs in to tap a major uranium orebody

    International Nuclear Information System (INIS)

    Jackson, D.

    1977-01-01

    The progress and future plans of Gulf Mineral Resources Co. for tapping and developing a major uranium orebody via two concrete-lined shafts in the Grants uranium mineral belt in New Mexico are discussed. The mineralogy of the Grants belt is discussed as it relates to the Gulf development project. Numerous pictures of the operation are included

  13. Assessment of resource selection models to predict occurrence of five juvenile flatfish species (Pleuronectidae) over the continental shelf in the western Gulf of Alaska

    Science.gov (United States)

    Wilson, Matthew T.; Mier, Kathryn L.; Cooper, Dan W.

    2016-05-01

    According to the nursery size hypothesis, flatfish recruitment is constrained by nursery area. Thus, if resource selection models can be shown to accurately predict the location and geographic extent of flatfish nursery areas, they will become important tools in the management and study of flatfish population dynamics. We demonstrate that some resource selection models derived previously to predict the presence and absence of juvenile flatfishes near shore were applicable to the broader continental shelf. For other age-species groups, derivation of new models for the continental shelf was necessary. Our study was conducted in the western Gulf of Alaska (GoA) during October 2011 on four groups of age-0 juvenile flatfishes: Pacific halibut (Hippoglossus stenolepis), arrowtooth flounder (Atheresthes stomias), northern rock sole (Lepidopsetta polyxystra), and flathead sole (Hippoglossoides elassodon); and three groups of age-1 juvenile flatfishes: northern rock sole, flathead sole, and yellowfin sole (Limanda aspera). Sampling occurred at 33 sites across the continental shelf. Fish were collected using a 3-m beam trawl, and a midwater trawl. Environmental data were collected on sediment composition and water temperature and depth. Many of the age-species groups co-occurred in the Shumagin and Barnabus sea valleys; however, age-0 arrowtooth flounder occurred at more locations than other juveniles, perhaps due to a relatively broad tolerance of environmental conditions and to the utilization of midwater habitat. Thus, the large nursery area of arrowtooth flounder may be one reason why they are currently the most abundant GoA flatfish. In fact, among all species, mean recruitment at age 3 increased with the percent occurrence of age-0 juveniles at the 33 sites, a proxy for relative nursery area, in accordance with the nursery size hypothesis, suggesting that mean recruitment among GoA flatfishes is structured by nursery size.

  14. Sediment dispersal in the macro tidal Gulf of Kachchh, India

    Digital Repository Service at National Institute of Oceanography (India)

    Chauhan, O.S.

    of the inner gulf is marked with U and V shaped cuttings extending in the parallel clays, deposited in an earlier phase of deposition. In the outer gulf, there exists a palaeo-channel, buried under 18 m thick sediments (in the central region). Existence...

  15. Uranium exploration in remote areas of Western Australia: the proposal for mutually acceptable monitoring regime

    International Nuclear Information System (INIS)

    Tsurikov, N.

    2008-01-01

    Full text: The uranium exploration activity in Western Australia has increased significantly in the last two years. Total identified uranium resources in 2005 were in order of 100,000 tonnes of U 3 O 8 Traveling on dusty roads in open vehicles, in 2005 and it is likely that more uranium deposits will be found in the State. The exploration activity is typically carried out in very remote locations in Western Australia and, frequently, on the land that is subject to the Australian Native Title Act (1993) - in the areas where the potential radiation exposure of the Traditional Land Owners has to be considered. Aboriginal groups are an integral part of dynamic ecosystems, for whom to separate 'man' from 'nature' is a convention with little meaning when dealing with environmental impact, and this needs to be taken into account by uranium exploration companies. Indigenous peoples' potential exposure to radiation as a result of uranium exploration cannot be simply modeled based on common assumptions. Indigenous people may be at a higher risk of radiation exposure at uranium exploration sites that may not have been adequately rehabilitated due to, for example: traveling on dusty roads in open vehicles; sitting on the ground, living and sleeping in temporary structures with earth floors; lack of adequate washing facilities, eating local biota and cooking in the ground; recreational activities (particularly by children). The radiation protection regulations in Western Australia are complex and somewhat confusing as there are three State government departments administering different regulations that may be applicable to uranium exploration. To facilitate the co-operation with exploration companies and government departments Traditional Owners must be properly advised on safety and environmental effects of uranium exploration and it is proposed that an independent 'Uranium Monitoring Team' consisting of a Traditional Owner and a radiation protection expert is created. It is

  16. 33 CFR 166.200 - Shipping safety fairways and anchorage areas, Gulf of Mexico.

    Science.gov (United States)

    2010-07-01

    ... anchorage areas, Gulf of Mexico. 166.200 Section 166.200 Navigation and Navigable Waters COAST GUARD... the erection of structures therein to provide safe approaches through oil fields in the Gulf of Mexico... for Fairway Anchorages in the Gulf of Mexico. Structures may be placed within an area designated as a...

  17. Energy partnership: Israel and the Persian Gulf

    International Nuclear Information System (INIS)

    Bahgat, G.

    2005-01-01

    In the early 2003, American troops toppled the regime of Saddam Hussein in Iraq. Few weeks later, President Bush introduced his vision to solve the Arab-Israeli conflict in what is known as the 'road map'. These interrelated developments confirm the connection between the two Middle-Eastern sub-systems--the Persian Gulf and the Levant and provide an opportunity to achieve a comprehensive peace. Regional economic cooperation is seen as the sine qua non of a durable peace. This study examines the potential for an energy partnership between the Persian Gulf hydrocarbon producers and Israel

  18. Energy partnership: Israel and the Persian Gulf

    International Nuclear Information System (INIS)

    Bahgat, G.

    2005-01-01

    In early 2003, American troops toppled the regime of Saddam Hussein in Iraq. Few weeks later, President Bush introduced his vision to solve the Arab-Israeli conflict in what is known as the ''road map''. These interrelated developments confirm the connection between the two Middle-Eastern sub-systems-the Persian Gulf and the Levant and provide an opportunity to achieve a comprehensive peace. Regional economic cooperation is seen as the sine qua non of a durable peace. This study examines the potential for an energy partnership between the Persian Gulf hydrocarbon producers and Israel. (author)

  19. Gulf International Conference on Applied Mathematics 2013

    CERN Document Server

    Advances in Applied Mathematics

    2014-01-01

    This volume contains contributions from the Gulf International Conference in Applied Mathematics, held at the Gulf University for Science & Technology. The proceedings reflects the three major themes of the conference. The first of these was mathematical biology, including a keynote address by Professor Philip Maini. The second theme was computational science/numerical analysis, including a keynote address by Professor Grigorii Shishkin. The conference also addressed more general applications topics, with papers in business applications, fluid mechanics, optimization, scheduling problems, and engineering applications, as well as a keynote by Professor Ali Nayfeh.

  20. Gulfs of Suez and Aqaba: New insights from recent satellite-marine potential field data

    Science.gov (United States)

    Almalki, Khalid A.; Mahmud, Syed A.

    2018-01-01

    Previous models and interpretations of crustal geometry and the nature of the crust under the Gulfs of Suez and Aqaba have generally been based on a local or small scale and have been limited due to a lack of data. The few studies that present larger scale crustal and uppermost mantle structure were dependent on one type of data with no consideration of other geological and/or geophysical features. Satellite-marine potential field data provide for the first time a full coverage dataset of the Gulfs of Suez and Aqaba as well as the Sinai area at the same scale which allows for a better understanding of crustal domains and geometry and the interplay between tectonic events. To that end, our forward models of magnetic and gravity data constrained by seismic data and available geological information in this area suggest that the crustal domains in the Gulf of Aqaba are more complicated than those in the Gulf of Suez. Our result supports continental rifting under most of the Gulf of Suez and a combination of transitional and continental crusts under the Gulf of Aqaba. Yet, there is no evidence of oceanic segment development in these gulfs. Regardless of oceanic or transitional crust, the models support a link between the Arabia and Sinai plates at the central Gulf of Aqaba. The data also support that Red Sea tectonism has no connection to or influence on both gulfs. The result suggests a continuation of lithological elements from land into the eastern part of the Gulf of Suez. Our synthesis and interpretations may play an important role in the reassessment of the tectonic history and extension of this important rift system.

  1. Geology and total petroleum systems of the Gulf of Guinea province of West Africa

    Science.gov (United States)

    Brownfield, Michael E.; Charpentier, Ronald R.

    2006-01-01

    The Gulf of Guinea Province as defined by the U.S. Geological Survey (USGS) consists of the coastal and offshore areas of Cote d'Ivoire, Ghana, Togo, and Benin, and the western part of the coast of Nigeria, from the Liberian border east to the west edge of the Niger Delta. The province includes the Ivory Coast, Tano, Central, Saltpond, Keta, and Benin Basins and the Dahomey Embayment. The area has had relatively little hydrocarbon exploration since 1968, with only 33 small to moderate-sized oil and gas fields having been discovered prior to the USGS assessment. Most discoveries to 1995 have been located in water depths less than 500 m. Since 1995, only eight new offshore discoveries have been made, with four of the discoveries in the deep-water area of the province. Although as many as five total petroleum systems exist in the Gulf of Guinea Province, only one, the Cretaceous Composite Total Petroleum System, and its assessment unit, the Coastal Plain and Offshore Assessment Unit, had sufficient data to allow assessment. The province shows two important differences compared to the passive-margin basins south of the Niger Delta: (1) the influence of transform tectonics, and (2) the absence of evaporites and salt deformation. The province also lacks long-lived, large deltaic systems that typically result in rapid source rock burial and abundant high-quality hydrocarbon reservoirs. The USGS assessed the potential for undiscovered conventional oil and gas resources in the Gulf of Guinea Province as part of its World Petroleum Assessment 2000, estimating a mean of 1,004 million barrels of conventional undiscovered oil, 10,071 billion cubic feet of gas, and 282 million barrels of natural gas liquids. Most of the hydrocarbon potential is postulated to be in the offshore, deeper waters of the province. Gas resources may be large, as well as accessible, in areas where the zone of hydrocarbon generation is relatively shallow.

  2. A study of burrow morphology in representative axiidean and gebiidean mud shrimps, from the Persian Gulf and Gulf of Oman, Iran

    Directory of Open Access Journals (Sweden)

    Vahid Sepahvand

    Full Text Available Mud shrimps (formerly Thalassinidea are common burrow dwelling decapod crustaceans in the littoral zone of the Persian Gulf and Gulf of Oman. Their burrow morphology was investigated using foam casting methods. The present study shows that the burrow morphology in Upogebia carinicauda is not consistent and the recorded variations are based on habitat type and some physical characteristics of sediments. Adult burrow morphology in sandy-muddy substrate with shells, and boulder field habitats were Y-shaped and complex burrows of horizontal channels with turning chambers and vertical connections to internal passages or crevices of boulders, respectively. In burrows of U. carinicauda, some narrow passages, connected to the upper part of adult burrows in sandy-muddy habitats, belong to juveniles. Another species, Neocallichirus jousseaumei was found under boulders in sandy-muddy habitats of the Gulf of Oman and Qeshm Island, Persian Gulf. Since this type of habitat is special in some features, no conspicuous ex-current openings (usually obvious as conical mounds of extruded sediment have been observed on the sediment surface; as these were hidden among the boulders surrounded by mixed sand and shells. The only method for observing this type of burrow was to remove the boulders by hand or lever.

  3. 78 FR 36309 - Research Advisory Committee on Gulf War Veterans' Illnesses, Notice of Meeting

    Science.gov (United States)

    2013-06-17

    ... DEPARTMENT OF VETERANS AFFAIRS Research Advisory Committee on Gulf War Veterans' Illnesses, Notice... Act, 5 U.S.C. App., that the Research Advisory Committee on Gulf War Veterans' Illnesses will meet on... operations during the Gulf War. [[Page 36310

  4. Onshore and offshore apatite fission-track dating from the southern Gulf of California: Insights into the time-space evolution of the rifting

    Science.gov (United States)

    Balestrieri, Maria Laura; Ferrari, Luca; Bonini, Marco; Duque-Trujillo, Jose; Cerca, Mariano; Moratti, Giovanna; Corti, Giacomo

    2017-11-01

    We present the results of a apatite fission-track (AFT) study on intrusive rocks in the southern Gulf of California, sampled along the eastern margin of Baja California Sur (western rift margin), as well as from islands and submerged rifted blocks within the Gulf of California, and from the conjugate Mexican margin (Nayarit state). For most of the samples U-Pb zircon and 40Ar-39Ar mineral ages were already available (Duque-Trujillo et al., 2015). Coupled with the new AFT data these ages provide a more complete information on cooling after emplacement. Our samples span a wide range of ages between 5.5 ± 1.1 and 73.7 ± 5.8 Ma, and show a general spatial distribution, with late Miocene AFT ages (about 6 Ma) aligned roughly NW-SE along a narrow offshore belt, parallel to Baja California Peninsula, separating older ages on both sides. This pattern suggests that in Late Miocene, deformation due to plate transtension focused at the eastern rheological boundary of the Baja California block. Some Early Miocene AFT ages onshore Baja California could be related to plutons emplaced at shallow depths and thermal resetting associated with the onset of volcanism at 19 Ma in this part of the Peninsula. On the other hand, an early extensional event similar to that documented in the eastern Gulf cannot be ruled out in the westernmost Baja California.

  5. Subtidal micro and meiobenthic community structure in the Gulf of Kachchh

    Digital Repository Service at National Institute of Oceanography (India)

    Ingole, B.S.; Goltekar, R.

    Community structure of the micro- and meiobenthos of subtidal sediment from the Gulf of Kachchh were investigated during April 2002 (premonsoon season). Sediment samples were collected from 23 stations representing the entire Gulf area. A total...

  6. Tropical cyclone disasters in the Gulf of Thailand

    Directory of Open Access Journals (Sweden)

    Suphat Vongvisessomjai

    2009-07-01

    Full Text Available The origin of tropical cyclones in the South China Sea is over a vast deep sea, southeast of the Philippines. The severetropical cyclones in summer with northerly tracks attack the Philippines, China, Korea and Japan, while the moderate ones inthe rainy season with northwesterly tracks pass Vietnam, Laos and northern Thailand. In October, November and December, the tropical cyclones are weakened and tracks shift to a lower latitude passing the Gulf of Thailand. Tropical cyclone disasters in the Gulf of Thailand due to strong winds causing storm surges and big waves or heavy rainfall over high mountains in causing floods and land slides result in moderate damages and casualties. Analyses are made of six decades of data of tropical cyclones from 1951-2006 having averaged numbers of 3 and 13 in Thailand and the South China Sea respectively. Detailed calculation of surges and wave heights of the 5 disastrous tropical cyclones in the Gulf of Thailand reveal that the Upper Gulf of Thailand with a limited fetch length of about 100 km in north/south direction and about 100 km width in the east/west direction, resulted in a limited maximum wave height of 2.3-2.5 m and maximum storm surge height of 1.2 m generated by Typhoon Vae (1952, while the east coast, with longer fetch lengthbut still limited by the existence of its shoreline, resulted in an increased maximum wave height of 4 m and maximum storm surge height of 0.6 m in the Upper Gulf of Thailand generated by Typhoon Linda (1997. These are the Probable Maximum Cyclones here.The southern shoreline, with unlimited fetch length on the east by tropical cyclones approaching from the South China Sea, generated maximum wave height of 6-11 m by Typhoon Gay (1989, resulting in more casualties and damages. Note that storm surges on the southern shorelines with steep slopes are small due to the short distance of shallow shorelines in receiving wind stresses for piling up sea levels. These disasters can be

  7. Gulf of Mexico Sales 139 and 141: Central and western planning areas. Final environmental impact statement. Volume 2: Sections 4.D. through 9. Final report

    International Nuclear Information System (INIS)

    1991-10-01

    The report is Volume II of two volumes. The EIS is a description of the environmental aspects and impacts of oil and gas activities resulting from these lease sales or the States bordering the Gulf of Mexico. The volume continues with Environmental Consequences; Consultation and Coordination; Bibliography and Special References; Preparers; Glossary; and the Appendices

  8. Gulf War veterans' health: medical evaluation of a U.S. cohort.

    Science.gov (United States)

    Eisen, Seth A; Kang, Han K; Murphy, Frances M; Blanchard, Melvin S; Reda, Domenic J; Henderson, William G; Toomey, Rosemary; Jackson, Leila W; Alpern, Renee; Parks, Becky J; Klimas, Nancy; Hall, Coleen; Pak, Hon S; Hunter, Joyce; Karlinsky, Joel; Battistone, Michael J; Lyons, Michael J

    2005-06-07

    United States military personnel reported various symptoms after deployment to the Persian Gulf during the 1991 Gulf War. However, the symptoms' long-term prevalence and association with deployment remain controversial. To assess and compare the prevalence of selected medical conditions in a national cohort of deployed and nondeployed Gulf War veterans who were evaluated by direct medical and teledermatologic examinations. A cross-sectional prevalence study performed 10 years after the 1991 Gulf War. Veterans were examined at 1 of 16 Veterans Affairs medical centers. Deployed (n = 1061) and nondeployed (n = 1128) veterans of the 1991 Gulf War. Primary outcome measures included fibromyalgia, the chronic fatigue syndrome, dermatologic conditions, dyspepsia, physical health-related quality of life (Short Form-36 [SF-36]), hypertension, obstructive lung disease, arthralgias, and peripheral neuropathy. Of 12 conditions, only 4 conditions were more prevalent among deployed than nondeployed veterans: fibromyalgia (deployed, 2.0%; nondeployed, 1.2%; odds ratio, 2.32 [95% CI, 1.02 to 5.27]); the chronic fatigue syndrome (deployed, 1.6%; nondeployed 0.1%; odds ratio, 40.6 [CI, 10.2 to 161]); dermatologic conditions (deployed, 34.6%; nondeployed, 26.8%; odds ratio, 1.38 [CI, 1.06 to 1.80]), and dyspepsia (deployed, 9.1%; nondeployed, 6.0%; odds ratio, 1.87 [CI, 1.16 to 2.99]). The mean physical component summary score of the SF-36 for deployed and nondeployed veterans was 49.3 and 50.8, respectively. Relatively low participation rates introduce potential participation bias, and deployment-related illnesses that resolved before the research examination could not, by design, be detected. Ten years after the Gulf War, the physical health of deployed and nondeployed veterans is similar. However, Gulf War deployment is associated with an increased risk for fibromyalgia, the chronic fatigue syndrome, skin conditions, dyspepsia, and a clinically insignificant decrease in the SF-36

  9. Binational collaboration to study Gulf of Mexico's harmful algae

    Science.gov (United States)

    Soto, Inia; Hu, Chuanmin; Steidinger, Karen; Muller-Karger, Frank; Cannizzaro, Jennifer; Wolny, Jennifer; Cerdeira-Estrada, Sergio; Santamaria-del-Angel, Eduardo; Tafoya-del-Angel, Fausto; Alvarez-Torres, Porfirio; Herrera Silveira, Jorge; Allen, Jeanne

    2012-01-01

    Blooms of the toxic marine dinoflagellate Karenia brevis cause massive fish kills and other public health and economic problems in coastal waters throughout the Gulf of Mexico [Steidinger, 2009]. These harmful algal blooms (HABs) are a gulf-wide problem that require a synoptic observing system for better serving decision-making needs. The major nutrient sources that initiate and maintain these HABs and the possible connectivity of blooms in different locations are important questions being addressed through new collaborations between Mexican and U.S. researchers and government institutions. These efforts were originally organized under the U.S./Mexico binational partnership for the HABs Observing System (HABSOS), led by the U.S. Environmental Protection Agency's Gulf of Mexico Program (EPAGMP) and several agencies in Veracruz, Mexico, since 2006. In 2010 these efforts were expanded to include other Mexican states and institutions with the integrated assessment and management of the Gulf of Mexico Large Marine Ecosystem (GoMLME) program sponsored by the Global Environment Facility (GEF), the United Nations Industrial Development Organization (UNIDO), the Secretaría de Medio Ambiente y Recursos Naturales (SEMARNAT), and the National Oceanic and Atmospheric Administration (NOAA).

  10. 77 FR 31071 - Research Advisory Committee on Gulf War Veterans' Illnesses, Notice of Meeting

    Science.gov (United States)

    2012-05-24

    ... DEPARTMENT OF VETERANS AFFAIRS Research Advisory Committee on Gulf War Veterans' Illnesses, Notice... Advisory Committee Act) that the Research Advisory Committee on Gulf War Veterans' Illnesses will meet on... Asia theater of operations during the Gulf War. The Committee will review VA program activities related...

  11. 75 FR 28686 - Research Advisory Committee on Gulf War Veterans' Illnesses; Notice of Meeting

    Science.gov (United States)

    2010-05-21

    ... DEPARTMENT OF VETERANS AFFAIRS Research Advisory Committee on Gulf War Veterans' Illnesses; Notice... Advisory Committee Act) that the Research Advisory Committee on Gulf War Veterans' Illnesses will meet on... Asia theater of operations during the Gulf War. The Committee will review VA program activities related...

  12. 76 FR 9407 - Research Advisory Committee on Gulf War Veterans' Illnesses; Notice of Meeting

    Science.gov (United States)

    2011-02-17

    ... DEPARTMENT OF VETERANS AFFAIRS Research Advisory Committee on Gulf War Veterans' Illnesses; Notice... Advisory Committee Act) that the Research Advisory Committee on Gulf War Veterans' Illnesses will meet on... Southwest Asia theater of operations during the Gulf War. The Committee will review VA program activities...

  13. 75 FR 65405 - Research Advisory Committee on Gulf War Veterans' Illnesses; Notice of Meeting

    Science.gov (United States)

    2010-10-22

    ... DEPARTMENT OF VETERANS AFFAIRS Research Advisory Committee on Gulf War Veterans' Illnesses; Notice... Advisory Committee Act) that the Research Advisory Committee on Gulf War Veterans' Illnesses will meet on... Asia theater of operations during the Gulf War. The Committee will review VA program activities related...

  14. 76 FR 47180 - Pick-Sloan Missouri Basin Program-Eastern Division-2021 Power Marketing Initiative Proposal

    Science.gov (United States)

    2011-08-04

    ... marketing plan principles. The comment period for the proposed 2021 PMI ended on May 4, 2011. Western... customers the opportunity to review current marketing plan principles and provide informal input to Western... Division--2021 Power Marketing Initiative Proposal AGENCY: Western Area Power Administration, DOE. ACTION...

  15. Who Benefits from Foreign Universities in the Arab Gulf States?

    Science.gov (United States)

    Wilkins, Stephen

    2011-01-01

    The Arab Gulf States are the largest hosts of international branch campuses globally. By increasing higher education capacity in the Arab Gulf States by over 30,000 places, foreign institutions have, through various forms of transnational provision, increased significantly the accessibility of higher education to young people living in these…

  16. 38 CFR 21.5053 - Restoration of contributions (Persian Gulf War).

    Science.gov (United States)

    2010-07-01

    ... 38 Pensions, Bonuses, and Veterans' Relief 2 2010-07-01 2010-07-01 false Restoration of contributions (Persian Gulf War). 21.5053 Section 21.5053 Pensions, Bonuses, and Veterans' Relief DEPARTMENT OF... Assistance Under 38 U.S.C. Chapter 32 Participation § 21.5053 Restoration of contributions (Persian Gulf War...

  17. 78 FR 7280 - Fisheries of the Exclusive Economic Zone Off Alaska; Pacific Cod by Vessels Using Pot Gear in the...

    Science.gov (United States)

    2013-02-01

    ... Vessels Using Pot Gear in the Western Regulatory Area of the Gulf of Alaska AGENCY: National Marine... using pot gear in the Western Regulatory Area of the Gulf of Alaska (GOA). This action is necessary to... vessels using pot gear in the Western Regulatory Area of the GOA. DATES: Effective 1200 hrs, Alaska local...

  18. Strain transients in the Gulf of Corinth (Greece)

    Science.gov (United States)

    Canitano, Alexandre; Bernard, Pascal; Linde, Alan; Sacks, Selwyn; Boudin, Frederick

    2010-05-01

    The Gulf of Corinth (Greece) is one of the most seismic regions in Europe, producing some earthquakes of magnitude greater than 5.8 in the last 35 years, 1 to 1.5 cm/yr of north-south extension, and frequent seismic swarms. This structure is a 110 km long, N110E oriented graben bounded by systems of very recent normal faults. This zone thus provides an ideal site for investigating in situ the physics of earthquake sources and for developing efficient seismic hazard reduction procedures. The Corinth Rift Laboratory (CRL) project is concentrated in the western part of the rift, around the city of Aigion, where instrumental seismicity and strain rate is highest. The CRL Network is made up about fifteen seismic stations as well as tiltmeters, strainmeters or GPS in order to study the local seismicity, and to observe and model the short and long term mechanics of the normal fault system. The instrumental seismicity in the Aigion zone clearly shows a strong concentration of small earthquakes between 5 and 10 km. In order to study slow transient deformation, two borehole strainmeters have been installed in the Gulf (Trizonia, Monasteraki). The strainmeter installed in the Trizonia island is continuously recording the horizontal strain at 150m depth with a resolution better than 10-9. The dominant signal is the earth and sea tidal effects (few 10-7 strain), this one is modulated by the mechanical effects of the free oscillations of the Gulf with periods between 8 and 40 min. The barometric pressure fluctuations acts in combination with the mean sea level variation at longer periods and both effects are not independant. The comparison between the strain data and the two forcing signals (sea-level, barometric pressure) shows clearly a non zero phase delay of the sea-level. The analysis of time correlations between the signals in differents frequency range exhibits that the sea level delay and the strainmeter/sea-level coupling coefficient are increasing with period (about 1

  19. On the future role of Gulf oil in meeting world energy demand

    International Nuclear Information System (INIS)

    Nagy Eltony, M.

    1996-01-01

    The validity of the view of a growing dependence of the world on oil from the Persian Gulf, and the resulting implications for the economies of the Gulf countries were examined. The prevailing view in the countries of the Persian Gulf is that the demand for oil will continue to rise, resulting in the inevitable increase in prices which will in turn alleviate the budget deficit problems currently encountered by most of the countries of the Gulf Cooperation Council (GCC) states. The author argues that the implication of this view is that GCC countries are failing to address the fundamental structural problems within their economies, and raise questions that tend to undermine this hypothesis of continuing dependence on Gulf oil by the rest of the world. Some of these factors are growing reliance on electricity and natural gas, environmental concerns, development of alternative fuels, political instability in the Gulf states and the potential interruption in supply, all of which tend to accelerate the trend towards reduced demand for Gulf oil. The following have been recommended as ways of avoiding the ultimate risk of huge unwanted oil reserves: diversification of the economies of GCC countries; reduced spending and increased investment in developing further capacity from non-GCC sources through cooperation and joint ventures between developing countries and international companies; a more active role in worldwide decisions relating to environmental concerns; and finally, a systematic monitoring and evaluation of the likely impacts of new developments in all areas of alternative energy. 17 refs

  20. Groundwater-derived nutrient inputs to the Upper Gulf of Thailand

    Science.gov (United States)

    Burnett, William C.; Wattayakorn, Gullaya; Taniguchi, Makoto; Dulaiova, Henrieta; Sojisuporn, Pramot; Rungsupa, Sompop; Ishitobi, Tomotoshi

    2007-01-01

    We report here the first direct measurements of nutrient fluxes via groundwater discharge into the Upper Gulf of Thailand. Nutrient and standard oceanographic surveys were conducted during the wet and dry seasons along the Chao Phraya River, Estuary and out into the Upper Gulf of Thailand. Additional measurements in selected near-shore regions of the Gulf included manual and automatic seepage meter deployments, as well as nutrient evaluations of seepage and coastal waters. The river transects characterized the distribution of biogeochemical parameters in this highly contaminated urban environment. Seepage flux measurements together with nutrient analyses of seepage fluids were used to estimate nutrient fluxes via groundwater pathways for comparison to riverine fluxes. Our findings show that disseminated seepage of nutrient-rich mostly saline groundwater into the Upper Gulf of Thailand is significant. Estimated fluxes of dissolved inorganic nitrogen (DIN) supplied via groundwater discharge were 40-50% of that delivered by the Chao Phraya River, inorganic phosphate was 60-70%, and silica was 15-40%. Dissolved organic nitrogen (DON) and phosphorus (DOP) groundwater fluxes were also high at 30-40% and 30-130% of the river inputs, respectively. These observations are especially impressive since the comparison is being made to the river that is the largest source of fresh water into the Gulf of Thailand and flows directly through the megacity of Bangkok with high nutrient loadings from industrial and domestic sources.

  1. Sediment pollution by heavy metals in the Strymonikos and Ierissos Gulfs, North Aegean Sea, Greece.

    Science.gov (United States)

    Stamatis, Nikolaos; Ioannidouw, Despina; Christoforidis, Achilleas; Koutrakis, Emmanouil

    2002-11-01

    Surface sediment samples from Strymonikos and Ierissos Gulfs were analyzed for Cu, Pb, Zn, Cr and Ni. The results showed that the sediment of Ierissos Gulf is more polluted with Cu, Pb, and Zn as compared to that of Strymonikos Gulf. The benthal area located off the load-out facility of the mining operations in the town of Stratoni, in Ierissos Gulf is established as the most polluted region. The distribution of Cr and Ni in both gulfs indicates the natural origin of these metals with the weathering of Strymon River and of other smaller rivers rocks being responsible for their enrichment.

  2. 77 FR 16258 - Notice of Public Scoping Meetings on an Environmental Impact Statement for Proposed Outer...

    Science.gov (United States)

    2012-03-20

    ... an Environmental Impact Statement for Proposed Outer Continental Shelf Gulf of Mexico Eastern... initiating in preparation for completing an Environmental Impact Statement (EIS) under the National... and Gas Lease Sale 224: Eastern Planning Area, Final Supplemental Environmental Impact Statement (OCS...

  3. Biomarkers of Aryl-hydrocarbon Receptor Activity in Gulf Killifish (Fundulus grandis) From Northern Gulf of Mexico Marshes Following the Deepwater Horizon Oil Spill.

    Science.gov (United States)

    Dubansky, Benjamin; Rice, Charles D; Barrois, Lester F; Galvez, Fernando

    2017-07-01

    Following the Deepwater Horizon oil spill, shorelines throughout the Barataria Basin of the northern Gulf of Mexico in Louisiana were heavily oiled for months with Macondo-252 oil, potentially impacting estuarine species. The Gulf killifish (Fundulus grandis) has been identified as a sentinel species for the study of site-specific effects of crude oil contamination on biological function. In November and December 2010, 4-5 months after the Macondo well was plugged and new oil was no longer spilling into the Gulf waters, Gulf killifish were collected across the Barataria Basin from 14 sites with varying degrees of oiling. Fish collected from oiled sites exhibited biological indications of exposure to oil, including increase in cytochrome P4501A (CYP1A) mRNA transcript and protein abundances in liver tissues. Immunohistochemistry revealed increases in gill, head kidney, and intestinal CYP1A protein at heavily oiled sites. Intestinal CYP1A protein was a sensitive indicator of exposure, indicating that intestinal tissue plays a key role in biotransformation of AHR ligands and that ingestion is a probable route of exposure, warranting additional consideration in future studies.

  4. 78 FR 6404 - Agency Information Collection (Survey of Chronic Gastrointestinal Illness in Persian Gulf...

    Science.gov (United States)

    2013-01-30

    ... of Chronic Gastrointestinal Illness in Persian Gulf Veterans) Activities Under OMB Review AGENCY.... Survey of Chronic Gastrointestinal Illness in Persian Gulf Veterans, VA Form 10-21092a. b. VA Research...: Approximately 25 percent military troops who were deployed in the first Persian Gulf War returned with...

  5. 76 FR 31018 - Research Advisory Committee on Gulf War Veterans' Illnesses; Notice of Meeting

    Science.gov (United States)

    2011-05-27

    ... DEPARTMENT OF VETERANS AFFAIRS Research Advisory Committee on Gulf War Veterans' Illnesses; Notice... Advisory Committee Act) that the Research Advisory Committee on Gulf War Veterans' Illnesses will meet on... consequences of military service in the Southwest Asia theater of operations during the Gulf War. The Committee...

  6. 77 FR 2353 - Research Advisory Committee on Gulf War Veterans' Illnesses; Notice of Meeting

    Science.gov (United States)

    2012-01-17

    ... DEPARTMENT OF VETERANS AFFAIRS Research Advisory Committee on Gulf War Veterans' Illnesses; Notice... Advisory Committee Act) that the Research Advisory Committee on Gulf War Veterans' Illnesses will meet on... consequences of military service in the Southwest Asia theater of operations during the Gulf War. The Committee...

  7. 78 FR 77205 - Research Advisory Committee on Gulf War Veterans' Illnesses; Notice of Meeting

    Science.gov (United States)

    2013-12-20

    ... DEPARTMENT OF VETERANS AFFAIRS Research Advisory Committee on Gulf War Veterans' Illnesses; Notice... Advisory Committee Act) that the Research Advisory Committee on Gulf War Veterans' Illnesses will meet on... service in the Southwest Asia theater of operations during the Gulf War. The Committee will review VA...

  8. The problems of the Arabian-Persian gulf

    International Nuclear Information System (INIS)

    Labrousse, H.

    2004-01-01

    The origin of the problems of the Arabian-Persian gulf is the delimitation of the maritime borders between the different bordering states and the exploitation rights of the offshore fields. Despite some bilateral agreements, the non-ratification by two bordering states of the United Nations convention on sea rights, deprives some negotiations of any legal framework. The Hormuz strait, the only opening of the gulf towards the Indian ocean, is tightly controlled by maritime powers which will never accept any interference with the maritime circulation in this pathway of considerable importance for petroleum transportation and for the world economy. (J.S.)

  9. Trophic Ecology and Movement Patters of Tiger Sharks (Galeocerdo Cuvier) off the Western North Atlantic Coastal and Continental Shelf Waters

    Science.gov (United States)

    Sancho, G.; Edman, R.; Frazier, B.; Bubley, W.

    2016-02-01

    Understanding the trophic dynamics and habitat utilization of apex predators is central to inferring their influence on different marine landscapes and to help design effective management plans for these animals. Tiger sharks (Galeocerdo cuvier) are abundant in shelf and offshore Gulf Stream waters of the western North Atlantic Ocean, and based on movements from individuals captured in Florida and Bahamas, seem to avoid coastal and shelf waters off South Carolina and Georgia. This contradicts reports of tiger sharks regularly being caught nearshore by anglers in these states, indicating that separate sub-populations may exist in the western North Atlantic. In the present study we captured Tiger Sharks in coastal waters off South Carolina in 2014 and 2015 in order to describe their movement patterns through acoustic and satellite tagging, and trophic dynamics through stable isotope analyses. Movement data show that these tiger sharks repeatedly visit particular inshore areas and mainly travel over the continental shelf, but rarely venture offshore beyond the continental shelf edge. Ongoing C and N stable isotope analyses of muscle, blood and skin tissues from adult and juvenile tiger sharks, as well as from potential prey species and primary producers, will help determine if their diets are based on inshore, shelf or offshore based food webs. Tiger sharks exploiting nearshore environments and shelf waters have much higher probabilities of interacting with humans than individuals occupying far offshore Gulf Stream habitats.

  10. 76 FR 21099 - Determinations Concerning Illnesses Discussed In National Academy of Sciences Reports on Gulf War...

    Science.gov (United States)

    2011-04-14

    ... of Sciences Reports on Gulf War and Health, Volumes 4 and 8 AGENCY: Department of Veterans Affairs... that the Secretary of Veterans Affairs, under the authority granted by the Persian Gulf War Veterans...), respectively titled Gulf War and Health, Volume 4: Health Effects of Serving in the Gulf War (Volume 4) and...

  11. The Arabian Gulf and Security Policy: The Past as Present, the Present as Future

    Science.gov (United States)

    2009-04-01

    permeates the Green Zone. Recent cooperation between the Maliki government and Sunni groups represents the tactical “divide-and-conquer” approach to... Kegan Paul, 2005), 76-77. 42. Zahlan, Modern Gulf States, 65. 43. Peck, Gulf Arab States, 38. 44. Zahlan, Modern Gulf States, 67. 70 JSOU Report

  12. Estimating hydrologic budgets for six Persian Gulf watersheds, Iran

    Science.gov (United States)

    Hosseini, Majid; Ghafouri, Mohammad; Tabatabaei, MahmoudReza; Goodarzi, Masoud; Mokarian, Zeinab

    2017-10-01

    Estimation of the major components of the hydrologic budget is important for determining the impacts on the water supply and quality of either planned or proposed land management projects, vegetative changes, groundwater withdrawals, and reservoir management practices and plans. As acquisition of field data is costly and time consuming, models have been created to test various land use practices and their concomitant effects on the hydrologic budget of watersheds. To simulate such management scenarios realistically, a model should be able to simulate the individual components of the hydrologic budget. The main objective of this study is to perform the SWAT2012 model for estimation of hydrological budget in six subbasin of Persian Gulf watershed; Golgol, Baghan, Marghab Shekastian, Tangebirim and Daragah, which are located in south and south west of Iran during 1991-2009. In order to evaluate the performance of the model, hydrological data, soil map, land use map and digital elevation model (DEM) are obtained and prepared for each catchment to run the model. SWAT-CUP with SUFI2 program was used for simulation, uncertainty and validation with 95 Percent Prediction Uncertainty. Coefficient of determination ( R 2) and Nash-Sutcliffe coefficient (NS) were used for evaluation of the model simulation results. Comparison of measured and predicted values demonstrated that each component of the model gave reasonable output and that the interaction among components was realistic. The study has produced a technique with reliable capability for annual and monthly water budget components in Persian Gulf watershed.

  13. Gulf of Mexico sales 157 and 161: Central and Western Planning areas. Final environmental impact statement: Volume 2, Sections IV.D through IX

    International Nuclear Information System (INIS)

    1995-01-01

    This volume of the environmental impact statement for sales in the Gulf of Mexico presents information dealing with impacts on the costal regions due to planned operations of the petroleum industry. Topics discussed include: impacts on sensitive coastal environments; coastal barrier beaches and associated dunes; wetlands; offshore resources; water quality; air quality; impacts to aquatic environments; impacts on marine birds; impacts on archaeological resources; impacts on socioeconomic conditions; topography; and analysis of a large oil spill

  14. The impact of the Gulf crisis on world oil and OPEC

    International Nuclear Information System (INIS)

    Mabro, R.

    1994-01-01

    The 1990-91 Gulf conflict involved oil as a major factor or significant objective from the viewpoint of all countries involved. Low oil prices, favored by Kuwait, limited Iraqi revenues. Iraq pressed the Organization of Petroleum Exporting Countries (OPEC) to raise oil prices, leading to tensions with Kuwait, with which Iraq also had long-standing territorial claims. The desire to protect access to the world's largest oil supplies was a factor in the USA's rapid reaction to the Iraqi invasion of Kuwait in August 1990. The initial response was an embargo on exports from Iraq and occupied Kuwait; this removed from the world oil market an estimated 4.5-5 million bbl/d. Although the spot price of oil rose to $27/bbl two weeks after the invasion, the market had significant supply-side flexibility. Major increases in output from Saudi Arabia and the United Arab Emirates almost entirely compensated for the lost production, stopping the upward movement of oil prices. These peaked in September 1990, stabilized, and fell dramatically in January 1991. The fall was helped by speculator selloffs, the perception that Iraq would soon be defeated under the recently begun air attacks, and the USA decision to sell from its strategic reserves. One effect of the crisis was a disturbance of output distribution among OPEC members; the Saudis and Emirates were unwillling to give up higher output levels to accommodate the return of Kuwait, thus making OPEC production quotas more difficult to achieve. Another effect was an increase in the political dependence of the Arab Gulf countries on the Western powers, particularly the USA, as the only credible guarantor of regional security. This further inhibits moves by OPEC to control oil prices or production

  15. Relationships Between Denitrifier Abundance, Denitrifier Diversity and Denitrification in Gulf of Mexico Hypoxic Zone Sediments.

    Science.gov (United States)

    Proctor, L. M.; Childs, C.; MacAuley, S.

    2002-12-01

    The largest zone of anthropogenic bottom water hypoxia in the Western Hemisphere occurs seasonally in the northern Gulf of Mexico. This hypoxic zone reaches its greatest extent in the summer months and is a consequence of seasonal stratification of the water column combined with the decomposition of organic matter derived from accelerated rates of primary production. The enhanced primary production is driven by inorganic nitrogen input from the Mississippi River and these conditions would seem ideal for supporting high levels of denitrification. Yet sediment denitrification exhibited a wide range, even at the height of the seasonal hypoxia. Therefore, we compared benthic denitrifier abundances and denitrifier diversity at several stations over two seasons exhibiting extremes in denitrification to evaluate the relationship between abundances, diversity and denitrification levels. Sediment denitrification ranged from 20 to 100 umol m-2 h-1, with rates in July, 2000 approximately half that observed in July, 2001. The highest rates were generally observed at stations with bottom water DO concentrations between 1 and 3 mg l-1. Relative denitrifier abundances, using nirS and nirK as proxies for denitrifiers, suggested a direct relationship between abundances and denitrification while denitrifier diversity, measured by T-RFLPs of nirS and nirK, suggested an inverse relationship between diversity and denitrification. These results suggest that several factors are important in understanding what controls denitrification in Gulf of Mexico hypoxic zone sediments.

  16. 75 FR 22423 - Pick-Sloan Missouri Basin Program, Eastern and Western Division Proposed Project Use Power Rate

    Science.gov (United States)

    2010-04-28

    ...: Reopening of comment period for review of the Pick-Sloan Missouri Basin Program, Eastern and Western... reopening the comment period for the Pick-Sloan Missouri Basin Program, Eastern and Western Division... DEPARTMENT OF THE INTERIOR Bureau of Reclamation Pick-Sloan Missouri Basin Program, Eastern and...

  17. Southeast Regional Implementation Manual for Requirements and Procedures for Evaluation of the Ocean Disposal of Dredged Material in Southeastern U.S. Atlantic and Gulf Coast Waters

    Science.gov (United States)

    This Regional Implementation Manual was prepared by EPA Region 4 to provide guidance for applicants proposing open-water disposal of dredged material in southeastern U.S. coastal waters of the Atlantic Ocean and the Gulf of Mexico.

  18. EMAP/NOAA 2003 SURVEY OF ECOLOGICAL CONDITIONS OF THE WESTERN U.S. CONTINENTAL SHELF, INCLUDING GULF OF FARALLONES NATIONAL MARINE SANCTUARY

    Science.gov (United States)

    In June of 2003 a partnership between EPA, NOAA, and the western coastal states conducted a joint survey of ecological condition of aquatic resources along the U.S. western continental shelf (30-120 m), using multiple indicators of ecological condition. The study is an element o...

  19. CMS: Simulated Physical-Biogeochemical Data, SABGOM Model, Gulf of Mexico, 2005-2010

    Data.gov (United States)

    National Aeronautics and Space Administration — This dataset contains monthly mean ocean surface physical and biogeochemical data for the Gulf of Mexico simulated by the South Atlantic Bight and Gulf of Mexico...

  20. Macrobenthic Community Structure in the Northwestern Arabian Gulf, Twelve Years after the 1991 Oil Spill

    KAUST Repository

    Joydas, Thadickal V.

    2017-08-03

    The biota in the Arabian Gulf faces stress both from natural (i.e., hyper salinity and high sea surface temperature), and human (i.e., from oil-related activities) sources. The western Arabian Gulf was also impacted by world\\'s largest oil spill (1991 Oil Spill). However, benthic research in this region is scarce and most of the studies have been conducted only in small areas. Here, we present data on macrobenthos collected during 2002–2003 from the open waters and inner bays in the northwestern Arabian Gulf aimed to assess the ecological status and also to evaluate the long-term impact, if any, of the 1991 Oil Spill. A total of 392 macrobenthic taxa with an average (±SE) species richness (S) of 71 ± 2, Shannon-Wiener species diversity (H′) of 4.9 ± 0.1, and density of 3,181 ± 359 ind. m−2 was recorded from the open water stations. The open waters have “slightly disturbed” (according to AZTI\\'s Marine Biotic Index, AMBI) conditions, with “good-high” (according to multivariate-AMBI, M-AMBI) ecological status indicating the absence of long-term impacts of the oil spill. Overall, 162 taxa were recorded from inner bays with average (±SE) values of S 41 ± 9, H′ 3.48 ± 0.39, and density 4,203 ± 1,042 ind. m−2. The lower TPH (Total Petroleum Hydrocarbons) stations (LTS, TPH concentrations <70 mg kg−2) show relatively higher S, H\\' and density compared to the higher TPH stations (HTS, TPH concentrations ≥100 mg kg−2). In the inner bays, AMBI values indicate slightly disturbed conditions at all stations except one, which is moderately disturbed. M-AMBI values indicate good status at LTS, while, high, good, moderate, and poor status at HTS. The “moderately disturbed” conditions with “moderate-poor” ecological status in some locations of the inner bays specify a severe long-term impact of the oil spill.

  1. Macrobenthic Community Structure in the Northwestern Arabian Gulf, Twelve Years after the 1991 Oil Spill

    Directory of Open Access Journals (Sweden)

    Thadickal V. Joydas

    2017-08-01

    Full Text Available The biota in the Arabian Gulf faces stress both from natural (i.e., hyper salinity and high sea surface temperature, and human (i.e., from oil-related activities sources. The western Arabian Gulf was also impacted by world's largest oil spill (1991 Oil Spill. However, benthic research in this region is scarce and most of the studies have been conducted only in small areas. Here, we present data on macrobenthos collected during 2002–2003 from the open waters and inner bays in the northwestern Arabian Gulf aimed to assess the ecological status and also to evaluate the long-term impact, if any, of the 1991 Oil Spill. A total of 392 macrobenthic taxa with an average (±SE species richness (S of 71 ± 2, Shannon-Wiener species diversity (H′ of 4.9 ± 0.1, and density of 3,181 ± 359 ind. m−2 was recorded from the open water stations. The open waters have “slightly disturbed” (according to AZTI's Marine Biotic Index, AMBI conditions, with “good-high” (according to multivariate-AMBI, M-AMBI ecological status indicating the absence of long-term impacts of the oil spill. Overall, 162 taxa were recorded from inner bays with average (±SE values of S 41 ± 9, H′ 3.48 ± 0.39, and density 4,203 ± 1,042 ind. m−2. The lower TPH (Total Petroleum Hydrocarbons stations (LTS, TPH concentrations <70 mg kg−2 show relatively higher S, H' and density compared to the higher TPH stations (HTS, TPH concentrations ≥100 mg kg−2. In the inner bays, AMBI values indicate slightly disturbed conditions at all stations except one, which is moderately disturbed. M-AMBI values indicate good status at LTS, while, high, good, moderate, and poor status at HTS. The “moderately disturbed” conditions with “moderate-poor” ecological status in some locations of the inner bays specify a severe long-term impact of the oil spill.

  2. Macrobenthic Community Structure in the Northwestern Arabian Gulf, Twelve Years after the 1991 Oil Spill

    KAUST Repository

    Joydas, Thadickal V.; Qurban, Mohammad A.; Borja, Angel; Krishnakumar, Periyadan K.; Al-Suwailem, Abdulaziz M.

    2017-01-01

    The biota in the Arabian Gulf faces stress both from natural (i.e., hyper salinity and high sea surface temperature), and human (i.e., from oil-related activities) sources. The western Arabian Gulf was also impacted by world's largest oil spill (1991 Oil Spill). However, benthic research in this region is scarce and most of the studies have been conducted only in small areas. Here, we present data on macrobenthos collected during 2002–2003 from the open waters and inner bays in the northwestern Arabian Gulf aimed to assess the ecological status and also to evaluate the long-term impact, if any, of the 1991 Oil Spill. A total of 392 macrobenthic taxa with an average (±SE) species richness (S) of 71 ± 2, Shannon-Wiener species diversity (H′) of 4.9 ± 0.1, and density of 3,181 ± 359 ind. m−2 was recorded from the open water stations. The open waters have “slightly disturbed” (according to AZTI's Marine Biotic Index, AMBI) conditions, with “good-high” (according to multivariate-AMBI, M-AMBI) ecological status indicating the absence of long-term impacts of the oil spill. Overall, 162 taxa were recorded from inner bays with average (±SE) values of S 41 ± 9, H′ 3.48 ± 0.39, and density 4,203 ± 1,042 ind. m−2. The lower TPH (Total Petroleum Hydrocarbons) stations (LTS, TPH concentrations <70 mg kg−2) show relatively higher S, H' and density compared to the higher TPH stations (HTS, TPH concentrations ≥100 mg kg−2). In the inner bays, AMBI values indicate slightly disturbed conditions at all stations except one, which is moderately disturbed. M-AMBI values indicate good status at LTS, while, high, good, moderate, and poor status at HTS. The “moderately disturbed” conditions with “moderate-poor” ecological status in some locations of the inner bays specify a severe long-term impact of the oil spill.

  3. Rickettsia parkeri in Gulf Coast Ticks, Southeastern Virginia, USA

    Science.gov (United States)

    2011-05-01

    Rickettsia parkeri in Gulf Coast Ticks, Southeastern Virginia, USA Chelsea L. Wright, Robyn M. Nadolny, Ju Jiang, Allen L. Richards, Daniel E...Virginia. We found that 43.1% of the adult Gulf Coast ticks collected in the summer of 2010 carried Rickettsia parkeri, suggesting that persons living in...or visiting southeastern Virginia are at risk for infection with this pathogen. Rickettsia parkeri is an obligate intracellular bacterium belonging

  4. Time required for gulf restoration uncertain

    International Nuclear Information System (INIS)

    Anon.

    1992-01-01

    Hurricane Andrew's long term effect on Gulf of Mexico oil and gas operations likely won't be known until next year. This paper reports that while damage assessments have moved beyond the emergency stage, many offshore service companies say reliable estimates of the extent of damage or cost of repairs still are unavailable. The time needed to complete restorations won't be known conclusively until more organized surveys are complete. Even then, many contractors say, gulf operators must decide how to handle damage at each location-whether to repair damaged structures or replace them by applying technology not available when many of the fields were developed. Some damaged installations will not be replaced or restored, and the production will be lost

  5. [Immigration in the countries of the Gulf: some specific aspects].

    Science.gov (United States)

    Labib, A

    1987-06-01

    "This essay analyses some aspects of the in-migration flows to the Gulf countries, coming from other Arab countries as well as developing nations. Since the 80's, the Gulf countries have endorsed a restrictive policy concerning manpower import, even though they still need foreign workers. The Gulf countries pursue this policy as they fear that the presence of millions of foreign labourers will create social tension. The situation of the foreign labour force is uncertain and is bound to the role of the middleman, the local kafil, and that of the recruiting agencies. Rotation of foreign workers is very high. It has reached the 10 million mark in ten years." (SUMMARY IN ENG) excerpt

  6. 77 FR 9897 - Gulf of Mexico Fishery Management Council; Public Meetings

    Science.gov (United States)

    2012-02-21

    .... SUMMARY: The Gulf of Mexico Fishery Management Council (Council) will convene its Special Coral Scientific... Mexico Fishery Management Council; Public Meetings AGENCY: National Marine Fisheries Service (NMFS... Management Council, 2203 N. Lois Avenue, Suite 1100, Tampa, FL 33607. Council address: Gulf of Mexico Fishery...

  7. 77 FR 4282 - Gulf of Mexico Fishery Management Council; Public Meeting

    Science.gov (United States)

    2012-01-27

    ... meeting. SUMMARY: The Gulf of Mexico Fishery Management Council will convene a meeting of the Shrimp Stock... Laboratory, 4700 Avenue U, Galveston, TX 77551-5997. Council address: Gulf of Mexico Fishery Management... Management Council; telephone: (813) 348-1630. SUPPLEMENTARY INFORMATION: The Shrimp Stock Assessment Review...

  8. Seasonal characteristics of water exchange in Beibu Gulf based on a particle tracking model

    Science.gov (United States)

    Wang, L.; Pan, W.; Yan, X.

    2016-12-01

    A lagrangian particle tracking model coupled with a three-dimensional Marine Environmental Committee Ocean Model (MEC) is used to study the transport and seasonal characteristics of water exchange in Beibu Gulf. The hydrodynamic model (MEC), which is forced with the daily surface and lateral boundary fluxes, as well as tidal harmonics and monthly climatological river discharges, is applied to simulate the flow field in the gulf during 2014. Using these results, particle tracking method which includes tidal advection and random walk in the horizontal is used to determine the residence times of sub regions within the gulf in response of winter and summer wind forcing. The result shows water exchange processes in the gulf have a similar tendency with seasonal circulation structure. During the sourthwestly prevailing wind in summer, water particles are traped within the gulf that considerably increases the residence time of each sub region. On the contrary, the presence of strong northeastly prevailing wind in winter drives particles to move cyclonicly leading to shorter residence times and rather active water exchanges among sub regions. Similarly, particle tracking is applied to investigate the water transport in Beibu Gulf. As Qiongzhou Strait and the wide opening in the south of the gulf are two significant channels connecting with the open ocean, continuous particle releases are simulated to quantify the influence range and the pathways of these sources water flowing into Beibu Gulf. The results show that water particles originated from Qiongzhou Strait are moving westward due to the year-round strong westward flow transportation. Influencing range in the north of the Beibu Gulf is enlarged by winter northeastly wind, however, it is blocked to the Leizhou Peninsula coastal region by summer westly wind. In the south opening, water particles are transported northward into the gulf along Hainan Island and flushed from Vietnam coastal region to the ocean rapidly by

  9. Cost-effective reduction of eutrophication in the Gulf of Kalloni (Island of Lesvos, Greece

    Directory of Open Access Journals (Sweden)

    B. ZANOU

    2001-06-01

    Full Text Available This study presents a cost-effective analysis by comparing the costs of measures (options to improve the quality of bathing waters in the Gulf of Kalloni (island of Lesvos, Greece in order to reduce the anthropogenic eutrophication in the coastal water of the Kalloni Gulf. The Gulf of Kalloni is a semi-enclosed gulf (115 km2 which receives municipal wastewater, agricultural activity drainage, and at times sewage from olive oil plants processing the local olives harvest. The area of study consists of the coastal waters and the river basin of which water run-off drains into the gulf. Four options are comparable in their environmental effectiveness to reduce eurtophication damages which are: municipal wastewater treatment plant, construction of dams, organic farming plus training and olive oil wastewater treatment plant.

  10. First record of two hard coral species (Faviidae and Siderastreidae from Qeshm Island (Persian Gulf, Iran

    Directory of Open Access Journals (Sweden)

    MOHAMMAD SHARIF RANJBAR

    2010-01-01

    Full Text Available Moradi M, Kamrani E, Shokri MR, Ranjbar MS, Hesni MA (2009 First record of two hard coral species (Faviidae and Siderastreidae from Qeshm Island (Persian Gulf, Iran. Nusantara Bioscience 2: 34-37. Two species of hard corals including Cyphastrea chalcidicum (Forskal 1775 (Faviidae and Coscinaraea monile (Forskal 1775 (Siderastreidae were collected from the south of Qeshm Island (Persian Gulf, Iran in the late of 2008. These species were previously reported from southern Persian Gulf, Gulf of Aden, Southeast Africa and Indo-Pacific. The literature review on the distribution of these two species revealed that these species were firstly recorded from the Persian Gulf. These findings further emphasize the high diversity of coral fauna in the Iranian waters of the northern Persian Gulf.

  11. 75 FR 70162 - Presumptive Service Connection for Diseases Associated With Persian Gulf War Service: Functional...

    Science.gov (United States)

    2010-11-17

    ... Diseases Associated With Persian Gulf War Service: Functional Gastrointestinal Disorders AGENCY: Department... theater of operations during the Persian Gulf War. DATES: Comments must be received by VA on or before... Service Connection for Diseases Associated With Persian Gulf War Service: Functional Gastrointestinal...

  12. High abundance of salps in the coastal Gulf of Alaska during 2011: A first record of bloom occurrence for the northern Gulf

    Science.gov (United States)

    Li, Kaizhi; Doubleday, Ayla J.; Galbraith, Moira D.; Hopcroft, Russell R.

    2016-10-01

    Atypical high abundances of two salp species occurred in the coastal Gulf of Alaska during 2011. Salpa aspera dominated numerically in aggregate form during spring, and became uncommon during summer, while Cyclosalpa bakeri increased from low during spring to high abundance during summer. Both species were absent, or nearly so, by fall. C. bakeri abundance was positively correlated to surface temperature in spring and summer, and both species abundances were negatively correlated to chlorophyll a. The proportion of aggregate forms of both species was higher than that of solitary forms during spring and summer. The length-frequency of S. aspera aggregate individuals ranged primarily from 10 to 50 mm, and solitary forms reached 130 mm, while C. bakeri aggregates were 10-25 mm, with solitary forms up to 75 mm. Estimated biomass of S. aspera was 0.35±0.64 mg C m-3 in southeastern Alaska during spring then decreased to 0.03±0.12 mg C m-3 during summer. Estimated biomass of C. bakeri was 0.03±0.06 mg C m-3 over the entire sampling domain during spring, then rose to 0.15±0.25 mg C m-3 during summer. The volume of water filtered daily by S. aspera was estimated to be up to 17% of the 200 m water column at some stations during spring, but only up to 3.5% during summer. Substantially higher grazing impact was possible if animals were largely confined to the surface mixed layer (typically 20-30 m thick). The average volume filtrated was higher during spring for S. aspera, but for C. bakeri it was higher during summer. We propose that the combined effect of the northward transport of seed populations, their rapid biomass increase through asexual reproduction, and the high clearance rate of salps contributed to atypically low chlorophyll a in the Gulf of Alaska during spring and summer of 2011. This unusual event impacted ecosystem function during 2011, and might be expected to increase in frequency as the Gulf continues to respond to climate variations.

  13. Why is Coastal Community Resilience Important in the Gulf of Mexico Region?

    Science.gov (United States)

    The Gulf of Mexico Program supports the regional collaborative approach and efforts of the Coastal Community Resilience Priority Issue Team of the Gulf of Mexico Governors’ Alliance and its broad spectrum of partners and stakeholders.

  14. Implication of coastal refineries to the ecology of the Gulf of Kachchh

    Digital Repository Service at National Institute of Oceanography (India)

    Zingde, M.D.; Anand, N.M.

    bank of the Gulf of Kachchh. An assessment of probable impact of establishment of these refineries to the rich biodiversity of the Gulf and suggestions to minimise these impacts have been made in this paper....

  15. 76 FR 61695 - Gulf of Mexico Regional Ecosystem Restoration Strategy (Preliminary)

    Science.gov (United States)

    2011-10-05

    ... ENVIRONMENTAL PROTECTION AGENCY [EPA-HQ-OA-2011-0798; FRL-9475-6] Gulf of Mexico Regional... of Availability. SUMMARY: This notice announces the availability of the Gulf of Mexico Regional... http://www.regulations.gov in the docket identified by Docket ID No. EPA-HQ-OA-2011-0798. President...

  16. 77 FR 59901 - Gulf of Mexico Fishery Management Council; Public Meeting

    Science.gov (United States)

    2012-10-01

    .... SUMMARY: The Gulf of Mexico Fishery Management Council (Council) will convene its Law Enforcement Advisory Panel in conjunction with the Gulf States Marine Fisheries Commission's Law Enforcement Committee. DATES... meeting will be held at the Grand Hotel Marriott Resort, One Grand Boulevard, Point Clear, AL 36564...

  17. The Application of Remotely Sensed Data and Models to Benefit Conservation and Restoration Along the Northern Gulf of Mexico Coast

    Science.gov (United States)

    Quattrochi, Dale; Estes, Maurice, Jr.; Al-Hamdan, Mohammad; Thom, Ron; Woodruff, Dana; Judd, Chaeli; Ellis, Jean; Swann, Roberta; Johnson, Hoyt, III

    2010-01-01

    New data, tools, and capabilities for decision making are significant needs in the northern Gulf of Mexico and other coastal areas. The goal of this project is to support NASA s Earth Science Mission Directorate and its Applied Science Program and the Gulf of Mexico Alliance by producing and providing NASA data and products that will benefit decision making by coastal resource managers and other end users in the Gulf region. Data and research products are being developed to assist coastal resource managers adapt and plan for changing conditions by evaluating how climate changes and urban expansion will impact land cover/land use (LCLU), hydrodynamics, water properties, and shallow water habitats; to identify priority areas for conservation and restoration; and to distribute datasets to end-users and facilitating user interaction with models. The proposed host sites for data products are NOAA s National Coastal Data Development Center Regional Ecosystem Data Management, and Mississippi-Alabama Habitat Database. Tools will be available on the Gulf of Mexico Regional Collaborative website with links to data portals to enable end users to employ models and datasets to develop and evaluate LCLU and climate scenarios of particular interest. These data will benefit the Mobile Bay National Estuary Program in ongoing efforts to protect and restore the Fish River watershed and around Weeks Bay National Estuarine Research Reserve. The usefulness of data products and tools will be demonstrated at an end-user workshop.

  18. The Application of Remotely Sensed Data and Models to Benefit Conservation and Restoration Along the Northern Gulf of Mexico Coast

    Science.gov (United States)

    Quattrochi, D. A.; Estes, M. G., Jr.; Al-Hamdan, M. Z.; Thom, R.; Woodruff, D.; Judd, C.; Ellis, J. T.; Swann, R.; Johnson, H., III

    2010-12-01

    New data, tools, and capabilities for decision making are significant needs in the northern Gulf of Mexico and other coastal areas. The goal of this project is to support NASA’s Earth Science Mission Directorate and its Applied Science Program and the Gulf of Mexico Alliance by producing and providing NASA data and products that will benefit decision making by coastal resource managers and other end users in the Gulf region. Data and research products are being developed to assist coastal resource managers adapt and plan for changing conditions by evaluating how climate changes and urban expansion will impact land cover/land use (LCLU), hydrodynamics, water properties, and shallow water habitats; to identify priority areas for conservation and restoration; and to distribute datasets to end-users and facilitating user interaction with models. The proposed host sites for data products are NOAA’s National Coastal Data Development Center Regional Ecosystem Data Management, and Mississippi-Alabama Habitat Database. Tools will be available on the Gulf of Mexico Regional Collaborative website with links to data portals to enable end users to employ models and datasets to develop and evaluate LCLU and climate scenarios of particular interest. These data will benefit the Mobile Bay National Estuary Program in ongoing efforts to protect and restore the Fish River watershed and around Weeks Bay National Estuarine Research Reserve. The usefulness of data products and tools will be demonstrated at an end-user workshop.

  19. Infectious Diseases - Diseases Related to Service in Gulf War, Iraq, and Afghanistan

    Science.gov (United States)

    ... qualify for VA health care . Diseases related to Gulf War, Iraq and Afghanistan service VA presumes that the ... Southwest Asia theater of military operations during the Gulf War August 2, 1990 to present and in Afghanistan ...

  20. 75 FR 17755 - Certificate of Alternative Compliance for the Offshore Supply Vessel GULF TIGER

    Science.gov (United States)

    2010-04-07

    ... Compliance for the Offshore Supply Vessel GULF TIGER AGENCY: Coast Guard, DHS. ACTION: Notice. SUMMARY: The... vessel GULF TIGER as required by 33 U.S.C. 1605(c) and 33 CFR 81.18. DATES: The Certificate of Alternate... for the h offshore supply vessel GULF TIGER. Full compliance with 72 COLREGS and the Inland Rules Act...

  1. Danish Gulf War Veterans Revisited: No Evidence of Increased Sickness Absence or Reduced Labor Market Outcome After Deployment to the Persian Gulf.

    Science.gov (United States)

    Nissen, Lars Ravnborg; Stoltenberg, Christian; Nielsen, Anni B Sternhagen; Vedtofte, Mia S; Marott, Jacob L; Gyntelberg, Finn; Guldager, Bernadette

    2016-11-01

    To examine the assumption that postdeployment incidence of sickness and other absence from work are higher among Gulf War Veterans compared with nonveterans. A prospective registry study including a cohort of 721 Danish Gulf War Veterans and a control cohort of 3,629 nonveterans selected from the general Danish population. Outcome measures were up to 23 years postdeployment incidence of (1) long-term sickness absence and (2) long-term all types of absence from work. Long term with regard to sickness and other absence was defined as exceeding 8 weeks. The association between outcomes and information on deployment history was studied using time-to-event analysis. The index date was the return date from the last deployment to the Gulf. The follow-up period was the time from index date until April 27, 2014. As the main finding, no difference was found between veterans and nonveterans in the incidence rate of long-term sickness absence. After an initial short period (3 months) with elevated incidence rate of long-term absence from work among veterans, there was no difference between the cohorts. Among Danish Gulf War Veterans, no postdeployment increased risk of long-term sickness absence or long-term absence from work was found as compared with nonveterans. Reprint & Copyright © 2016 Association of Military Surgeons of the U.S.

  2. Geothermal Heat Flow in the Gulfs of California and Aden.

    Science.gov (United States)

    Von Herzen, R P

    1963-06-14

    Eighteen measurements in and near the gulfs of California and Aden indicate the geothermal flux is several times the world-wide mean of 1.2 x 10(-6) cal/cm(2) sec in both regions. Both gulfs closely coincide with the intersection of oceanic rises with continents and have likely been formed under tensional forces, which suggests an association with mantle convection currents.

  3. 75 FR 69921 - Gulf of Mexico Fishery Management Council; Public Meetings

    Science.gov (United States)

    2010-11-16

    ..., and the Essential Fish Habitat 5-Year Review Report. The Texas group is part of a three unit Habitat.... SUMMARY: The Gulf of Mexico Fishery Management Council will convene a public meeting of the Texas Habitat... FURTHER INFORMATION CONTACT: Jeff Rester, Habitat Support Specialist, Gulf States Marine Fisheries...

  4. 76 FR 5110 - Hazardous Waste Management System; Identification and Listing of Hazardous Waste; Proposed Rule

    Science.gov (United States)

    2011-01-28

    ... will dispose of the leachate at a publicly owned treatment works or at an industrial waste disposal... classification of listed waste pursuant to Sec. Sec. 261.31 and 261.32. Specifically, in its petition, Gulf West... Waste Management System; Identification and Listing of Hazardous Waste; Proposed Rule AGENCY...

  5. Gulf War

    DEFF Research Database (Denmark)

    Dalgaard-Nielsen, Anja

    2003-01-01

    As it became a non‐permanent member of the UN Security Council in January 2003, Germany stepped up its opposition to war with Iraq. The stage was set for a repeat of Germany's uncomfortable position during the 1991 Gulf War. At that time, as most of Germany's allies rallied behind Washington......, Germany made only financial contributions, and hundreds of thousands of Germans took to the streets to protest against the war. Yet, since 1991, Germany had come a long way in its attitudes towards military force. From a policy of complete abstention from military deployments beyond NATO's area (so...

  6. Surface circulation in the Gulf of Cadiz: Model and mean flow structure

    Science.gov (United States)

    Peliz, Alvaro; Dubert, Jesus; Marchesiello, Patrick; Teles-Machado, Ana

    2007-11-01

    The mean flow structure of the Gulf of Cadiz is studied using a numerical model. The model consists of a set of one-way nested configurations attaining resolutions on the order of 2.6 km in the region of the Gulf of Cadiz. In the large-scale configuration, the entrainment of the Mediterranean Water is parameterized implicitly through a nudging term. In medium- and small-scale nested configurations, the Mediterranean outflow is introduced explicitly. The model reproduces all the known features of the Azores Current and of the circulation inside the Gulf of Cadiz. A realistic Mediterranean Undercurrent is generated and Meddies develop at proper depths on the southwest tip of the Iberian slope. The hypothesis that the Azores Current may generate in association with the Mediterranean outflow (β-plume theories) is confirmed by the model results. The time-mean flow is dominated by a cyclonic cell generated in the gulf which expands westward and has transports ranging from 4 to 5 Sv. The connection between the cell and the Azores Current is analyzed. At the scale of the Gulf, the time-mean flow cell is composed by the westward Mediterranean Undercurrent, and by a counterflow running eastward over the outer edge of the Mediterranean Undercurrent deeper vein, as the latter is forced downslope. This counterflow feeds the entrainment at the depths of the Mediterranean Undercurrent and the Atlantic inflow at shallower levels. Coastward and upslope of this recirculation cell, a second current running equatorward all the way along the northern part of the gulf is revealed. This current is a very robust model result that promotes continuity between the southwestern Iberian coast and the Strait of Gibraltar, and helps explain many observations and recurrent SST features of the Gulf of Cadiz.

  7. The life course model as a framework for post-conflict health analysis: reflections on the Gulf War critical period.

    Science.gov (United States)

    Cange, Charles W

    2016-01-01

    In the Kuwait context, from January 1991 to December 1991, there were a series of chemical and psychological Gulf War-era exposures that left persistent, long-term damage. Extreme stress from a critical event speeds up the usual disease latency period, and may be part of a synergistic effect that leads to higher disease rates over a shorter period of time. I am interested in the impact of armed conflict on health outcomes over the life course in Kuwait, and particularly the pathways through which armed conflict causes changes in health on a population level. In this paper, I propose a culturally sensitive, post-conflict socio-ecological model that informs a three-pronged health study. I propose a macro-micro mix that includes an ecological study, a case-control study and a qualitative study to investigate Kuwait's post-conflict health concerns. Thus, I revise the concept of 'post-conflict health' as a trajectory that is mediated through different, complex social levels and develops over time during the latency period. The main advantage of a macro-micro mix approach for post-conflict health is that it contextualizes the Gulf War as an environmental health issue.

  8. A bottom-driven mechanism for distributed faulting in the Gulf of California rift

    Science.gov (United States)

    Persaud, Patricia; Tan, Eh; Contreras, Juan; Lavier, Luc

    2017-11-01

    Observations of active faulting in the continent-ocean transition of the Northern Gulf of California show multiple oblique-slip faults distributed in a 200 × 70 km2 area developed some time after a westward relocation of the plate boundary at 2 Ma. In contrast, north and south of this broad pull-apart structure, major transform faults accommodate Pacific-North America plate motion. Here we propose that the mechanism for distributed brittle deformation results from the boundary conditions present in the Northern Gulf, where basal shear is distributed between the Cerro Prieto strike-slip fault (southernmost fault of the San Andreas fault system) and the Ballenas Transform Fault. We hypothesize that in oblique-extensional settings whether deformation is partitioned in a few dip-slip and strike-slip faults, or in numerous oblique-slip faults may depend on (1) bottom-driven, distributed extension and shear deformation of the lower crust or upper mantle, and (2) the rift obliquity. To test this idea, we explore the effects of bottom-driven shear on the deformation of a brittle elastic-plastic layer with the help of pseudo-three dimensional numerical models that include side forces. Strain localization results when the basal shear abruptly increases in a step-function manner while oblique-slip on numerous faults dominates when basal shear is distributed. We further explore how the style of faulting varies with obliquity and demonstrate that the style of delocalized faulting observed in the Northern Gulf of California is reproduced in models with an obliquity of 0.7 and distributed basal shear boundary conditions, consistent with the interpreted obliquity and boundary conditions of the study area.

  9. Influence of monsoonal winds on chlorophyll-α distribution in the Beibu Gulf.

    Directory of Open Access Journals (Sweden)

    Chunyan Shen

    Full Text Available The influence of seasonal, monsoonal winds on the temporal and spatial variability of chlorophyll-a (chl-a in the Beibu Gulf is studied based on long-term satellite data of sea surface winds, chl-a concentration and sea surface temperature (SST and in-situ observations for the years from 2002 to 2014. The analysis results indicated that under northeasterly monsoonal winds, chl-a concentrations were substantially elevated in most area of the Beibu Gulf, with a high chl-a concentration (>2 mg m-3 patch extending southwestward from the coastal water of the northeastern Gulf, consistent with the winter wind pattern. Meanwhile, the spatial distribution of high chl-a concentration is correlated with low SST in the northeastern Gulf. In the southern Gulf, there was generally low chl-a, except in the coastal waters southwest of Hainan Island. Here, the upwelling cold water prevails outside the mouth of the Beibu Gulf, driven by the southwesterly monsoonal winds and the runoff from the Changhua River, as implied by low observed SST. Correlation analysis indicated the chl-a concentration was strongly modulated by wind speed (r = 0.63, p0.7, p<0.001. Integrated analysis also showed that stratification is weak and mixing is strong in winter as affected by the high wind speed, which suggests that the wind-induced mixing is a dominant mechanism for entrainment of nutrients and the spatial distribution of chl-a in winter.

  10. Gulf Canada's Russian joint venture

    International Nuclear Information System (INIS)

    Motyka, D.

    1992-01-01

    After three years of evaluating prospects and negotiating with government and industry representatives, Gulf Canada established its first joint venture in the Russian Federation with Komineft, a production association from the Komi autonomous republic. Komineft has a 50% share of the venture, and the rest is shared equally between Gulf and British Gas. The operating area is at the Vozey and Upper Vozey fields in the Timan-Pechora Basin, some 1,500 km northeast of Moscow just inside the Arctic Circle. An attractive feature of the Upper Vozey project is low development costs of ca $2/bbl. In the Vozey field, the venture will set up an enhanced oil recovery demonstration project to test techniques perfected in Alberta. About 60 Canadians are involved on the project, and headquarters are in Usinsk, ca 100 km south of the oil fields. In the first half of 1992, oil production in the first phase of the venture averaged around 10,000 bbl/d and continues to increase

  11. Environmental emergency in Persian Gulf

    International Nuclear Information System (INIS)

    Zanini, G.

    1991-01-01

    This paper gives an environmental damage report for the Kuwait-Persian Gulf area that has been affected by the Gulf War oil well fires and the release of oil into the sea. The report was prepared by members of an ENEA (Italian Commission for New Technologies, Energy and the Environment)/Friends of the Earth scientific mission whose aim was to assess the damage to terrestrial and aquatic ecosystems and to develop short and long terms programs of damage containment and environmental restoration. With regard to shore-line clean-up operations, the mission noted the scarce use of manpower, 500 versus 11,000 for the Exxon Valdez spill. Seventy-five per cent of the surface of Kuwait has been covered with a fine spray of petroleum and ashes borne by turbulent winds. Efforts are being made to establish a climate model, which would take into account the effects of the altered environmental conditions, to forecast the local transport of the pollutants

  12. Alaska, Gulf spills share similarities

    International Nuclear Information System (INIS)

    Usher, D.

    1991-01-01

    The accidental Exxon Valdez oil spill in Alaska and the deliberate dumping of crude oil into the Persian Gulf as a tactic of war contain both glaring differences and surprising similarities. Public reaction and public response was much greater to the Exxon Valdez spill in pristine Prince William Sound than to the war-related tragedy in the Persian Gulf. More than 12,000 workers helped in the Alaskan cleanup; only 350 have been involved in Kuwait. But in both instances, environmental damages appear to be less than anticipated. Natures highly effective self-cleansing action is primarily responsible for minimizing the damages. One positive action growing out of the two incidents is increased international cooperation and participation in oil-spill clean-up efforts. In 1990, in the aftermath of the Exxon Valdez spill, 94 nations signed an international accord on cooperation in future spills. The spills can be historic environmental landmarks leading to creation of more sophisticated response systems worldwide

  13. Patterns of Illness and Care Before Deployment to the Persian Gulf War

    National Research Council Canada - National Science Library

    Miller, Richard

    2001-01-01

    ...) Comprehensive Clinical Evaluation Program (CCEP) upon returning from the Persian Gulf War have patterns of illness and medical care seeking during the year prior to deployment to the Persian Gulf that differ from those of comparison groups of Army...

  14. Patterns of Illness and Care Before Deployment to the Persian Gulf War

    National Research Council Canada - National Science Library

    Miller, Richard

    2002-01-01

    ...) Comprehensive Clinical Evaluation Program (CCEP) upon returning from the Persian Gulf War have patterns of illness and medical care seeking during the year prior to deployment to the Persian Gulf that differ from those of comparison groups of Army...

  15. Renal Cell Toxicity of Water-Soluble Coal Extracts from the Gulf Coast

    Science.gov (United States)

    Ojeda, A. S.; Ford, S.; Ihnat, M.; Gallucci, R. M.; Philp, P. R.

    2017-12-01

    In the Gulf Coast, many rural residents rely on private well water for drinking, cooking, and other domestic needs. A large portion of this region contains lignite coal deposits within shallow aquifers that potentially leach organic matter into the water supply. It is proposed that the organic matter leached from low-rank coal deposits contributes to the development of kidney disease, however, little work has been done to investigate the toxicity of coal extracts. In this study, human kidney cells (HK-2) were exposed to water-soluble extracts of Gulf Coast Coals to assess toxicity. Cell viability was measured by direct counts of total and necrotic cells. A dose-response curve was used to generate IC50 values, and the extracts showed significant toxicity that ranged from 0.5% w/v to 3% w/v IC50. The most toxic extract was from Louisiana where coal-derived organic material has been previously linked to high incidents of renal pelvic cancer (RPC). Although the toxic threshold measured in this study is significantly higher than the concentration of organic matter in the groundwater, typically affected areas may consume contaminated water over a lifetime. It is possible that the cumulative toxic effects of coal-derived material contribute to the development of disease.

  16. Blood Biomarkers of Chronic Inflammation in Gulf War Illness.

    Directory of Open Access Journals (Sweden)

    Gerhard J Johnson

    Full Text Available More than twenty years following the end of the 1990-1991 Gulf War it is estimated that approximately 300,000 veterans of this conflict suffer from an unexplained chronic, multi-system disorder known as Gulf War Illness (GWI. The etiology of GWI may be exposure to chemical toxins, but it remains only partially defined, and its case definition is based only on symptoms. Objective criteria for the diagnosis of GWI are urgently needed for diagnosis and therapeutic research.This study was designed to determine if blood biomarkers could provide objective criteria to assist diagnosis of GWI.A surveillance study of 85 Gulf War Veteran volunteers identified from the Department of Veterans Affairs Minnesota Gulf War registry was performed. All subjects were deployed to the Gulf War. Fifty seven subjects had GWI defined by CDC criteria, and 28 did not have symptomatic criteria for a diagnosis of GWI. Statistical analyses were performed on peripheral blood counts and assays of 61 plasma proteins using the Mann-Whitney rank sum test to compare biomarker distributions and stepwise logistic regression to formulate a diagnostic model.Lymphocyte, monocyte, neutrophil, and platelet counts were higher in GWI subjects. Six serum proteins associated with inflammation were significantly different in GWI subjects. A diagnostic model of three biomarkers-lymphocytes, monocytes, and C reactive protein-had a predicted probability of 90% (CI 76-90% for diagnosing GWI when the probability of having GWI was above 70%.The results of the current study indicate that inflammation is a component of the pathobiology of GWI. Analysis of the data resulted in a model utilizing three readily measurable biomarkers that appears to significantly augment the symptom-based case definition of GWI. These new observations are highly relevant to the diagnosis of GWI, and to therapeutic trials.

  17. Minimum area thresholds for rattlesnakes and colubrid snakes on islands in the Gulf of California, Mexico.

    Science.gov (United States)

    Meik, Jesse M; Makowsky, Robert

    2018-01-01

    We expand a framework for estimating minimum area thresholds to elaborate biogeographic patterns between two groups of snakes (rattlesnakes and colubrid snakes) on islands in the western Gulf of California, Mexico. The minimum area thresholds for supporting single species versus coexistence of two or more species relate to hypotheses of the relative importance of energetic efficiency and competitive interactions within groups, respectively. We used ordinal logistic regression probability functions to estimate minimum area thresholds after evaluating the influence of island area, isolation, and age on rattlesnake and colubrid occupancy patterns across 83 islands. Minimum area thresholds for islands supporting one species were nearly identical for rattlesnakes and colubrids (~1.7 km 2 ), suggesting that selective tradeoffs for distinctive life history traits between rattlesnakes and colubrids did not result in any clear advantage of one life history strategy over the other on islands. However, the minimum area threshold for supporting two or more species of rattlesnakes (37.1 km 2 ) was over five times greater than it was for supporting two or more species of colubrids (6.7 km 2 ). The great differences between rattlesnakes and colubrids in minimum area required to support more than one species imply that for islands in the Gulf of California relative extinction risks are higher for coexistence of multiple species of rattlesnakes and that competition within and between species of rattlesnakes is likely much more intense than it is within and between species of colubrids.

  18. Why is Improving Water Quality in the Gulf of Mexico so Critical?

    Science.gov (United States)

    The EPA regional offices and the Gulf of Mexico Program work with Gulf States to continue to maximize the efficiency and utility of water quality monitoring efforts for local managers by coordinating and standardizing state and federal water quality data

  19. Effectiveness of Acupuncture in the Treatment of Gulf War Illness

    Science.gov (United States)

    2013-01-01

    325. 7 Wigers SH, Stiles TC, Vogael PA. Effects of aerobic exercise versus stress management treatment in fibromyalgia : a 4.5 year prospective study... Treatment of Gulf War Illness PRINCIPAL INVESTIGATOR: Lisa Conboy, M.A., M.S., ScD...December 2012 4. TITLE AND SUBTITLE 5a. CONTRACT NUMBER Effectiveness of Acupuncture in the Treatment of Gulf War Illness 5b. GRANT NUMBER W81XWH

  20. The consequences and hazards of depleted uranium weapons used by US army since gulf war

    International Nuclear Information System (INIS)

    Mao Yongze

    1999-01-01

    Military equipment and development of depleted uranium weapon in USA, the depleted uranium weapon used in gulf war by USA army, personnel irradiation in the gulf war, and the protection in the gulf war are introduced. The radioactivity, radioactive characteristics, chemical toxicity and hazard of the depleted uranium are also introduced

  1. Heavy metal, trace element and petroleum hydrocarbon pollution in the Arabian Gulf: Review

    OpenAIRE

    Afnan Mahmood Freije

    2015-01-01

    The Arabian Gulf environmental status was assessed based on studies conducted in Bahrain, Kuwait, Oman, Saudi Arabia, Qatar, and United Arab Emirates (UAE) during 1983–2011. This review examines all sorts of pollutions in the Arabian Gulf area over the last three decades. Approximately 50 published studies were reviewed in order to determine the pollution status in the Arabian Gulf regarding heavy metals and organic substances. Three types of environmental pollutions including marine and coas...

  2. 78 FR 69803 - Drawbridge Operation Regulations; Gulf Intracoastal Waterway, Venice, FL

    Science.gov (United States)

    2013-11-21

    ...-AA09 Drawbridge Operation Regulations; Gulf Intracoastal Waterway, Venice, FL AGENCY: Coast Guard, DHS... that governs the Hatchett Creek (US-41) Twin Bridges, Gulf Intracoastal Waterway mile 56.9, Venice, FL... mile 56.9 at Venice, FL as listed in Sec. 117.287(b), provides the draw of the Hatchett Creek (US-41...

  3. Survey to assess Persian Gulf spill effects

    International Nuclear Information System (INIS)

    Anon.

    1992-01-01

    This paper reports that an international group is poised for an extensive survey of the Persian Gulf, including an assessment of the long term effects of last year's oil spill, a legacy of the Persian Gulf war. Saudi Arabia plans a $450 million cleanup program on beaches fouled by the massive spill. Plans for the survey were disclosed by the United National Educational, Scientific and Cultural Organization (Unesco). It is to be carried out under the auspices of the Regional Organization for the Protection of the Marine Environment (Ropme), Unesco's Intergovernmental Oceanographic Commission, and the U.S. National Oceanic and Atmospheric Administration. Ropme member countries are Bahrain, Iran, Iraq, Kuwait, Qatar, Saudi Arabia, and the United Arab Emirates

  4. On depleted uranium: gulf war and Balkan syndrome.

    Science.gov (United States)

    Duraković, A

    2001-04-01

    The complex clinical symptomatology of chronic illnesses, commonly described as Gulf War Syndrome, remains a poorly understood disease entity with diversified theories of its etiology and pathogenesis. Several causative factors have been postulated, with a particular emphasis on low level chemical warfare agents, oil fires, multiple vaccines, desert sand (Al-Eskan disease), botulism, Aspergillus flavus, Mycoplasma, aflatoxins, and others, contributing to the broad scope of clinical manifestations. Among several hundred thousand veterans deployed in the Operation Desert Storm, 15-20% have reported sick and about 25,000 died. Depleted uranium (DU), a low-level radioactive waste product of the enrichment of natural uranium with U-235 for the reactor fuel or nuclear weapons, has been considered a possible causative agent in the genesis of Gulf War Syndrome. It was used in the Gulf and Balkan wars as an armor-penetrating ammunition. In the operation Desert Storm, over 350 metric tons of DU was used, with an estimate of 3-6 million grams released in the atmosphere. Internal contamination with inhaled DU has been demonstrated by the elevated excretion of uranium isotopes in the urine of the exposed veterans 10 years after the Gulf war and causes concern because of its chemical and radiological toxicity and mutagenic and carcinogenic properties. Polarized views of different interest groups maintain an area of sustained controversy more in the environment of the public media than in the scientific community, partly for the reason of being less than sufficiently addressed by a meaningful objective interdisciplinary research.

  5. Functional composition of Chaetodon butterflyfishes at a peripheral and extreme coral reef location, the Persian Gulf

    KAUST Repository

    Pratchett, Morgan S.; Hoey, Andrew; Feary, David A.; Bauman, Andrew G.; Burt, John A.; Riegl, Bernhard M.

    2013-01-01

    composition of butterflyfishes in the Persian Gulf, Musandam Peninsula, and Gulf of Oman. Only five species of butterflyfishes were recorded during this study, and mostly just in the Gulf of Oman. Unlike most locations in the Indo-Pacific where butterflyfish

  6. Bird Movements and Behaviors in the Gulf Coast Region: Relation to Potential Wind-Energy Developments

    Energy Technology Data Exchange (ETDEWEB)

    Morrison, M. L.

    2006-06-01

    The purpose of this paper is to discuss the possible impacts of wind development to birds along the lower Gulf Coast, including both proposed near-shore and offshore developments. The report summarizes wind resources in Texas, discusses timing and magnitude of bird migration as it relates to wind development, reviews research that has been conducted throughout the world on near- and offshore developments, and provides recommendations for research that will help guide wind development that minimizes negative impacts to birds and other wildlife resources.

  7. Living Behaviors and Molecular Characterization of Benthic Foraminifera in the Arabian Gulf

    Science.gov (United States)

    Arslan, Muhammad; Kaminski, Michael; Khalil, Amjad; Holzmann, Maria

    2016-04-01

    The benthic foraminifera are among the major carbonate producers in modern Arabian Gulf waters and are found living in all marine habitats. They have been recognized as proxies to assess paleoenvironmental changes, however, their biological behaviors in modern environments needs to be further studied. The current study attempts to explain the biology of benthic foraminifera in terms of their living behaviors and molecular characterization, from different regions of the western side of the Arabian Gulf. Accordingly, two major groups of benthic foraminifera, namely rotaliids and miliolids, are examined under laboratory conditions. Results illustrate that the rotaliids are more resistant to environmental changes than miliolids, as their granular reticulopodial network is stronger than among the miliolids, with high cytoplasmic streaming. The pseudopodia extend out from both primary and secondary apertures, and aid the organism in locomotion by attaching to the wall of hard substrate. As a result they drag their whole bodies toward the direction of motion. In rotaliids, the movement rate is high and is attributed to the extension of pseudopodia through all apertures, compared with miliolids in which pseudopodia extend out from the primary aperture only. The innate behavior of both groups was observed as a function of external stimulus, i.e., light, nutrients, and availability of substrate. The observation on average life span reflected that the rotaliids was able to survive longer than miliolids. Molecular analysis reveals the presence of four groups, i.e., Ammonia, Murrayinella, Glabratellina, and Elphidium which support the morphological taxonomy at the genus level. However, BLAST analysis contradicts the species level taxonomy, which challenges the classification based upon hard-shell morphology. Nevertheless, monophyletic clustering is observed among all major groups. The study concludes that the morphological taxonomy needs to be augmented by molecular analysis

  8. Gulf of Mexico Ecosystem Status Report

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Gulf of Mexico is one of the most ecologically and economically valuable marine ecosystems in the world and is affected by a variety of natural and anthropogenic...

  9. Treating Gulf War Illness with Novel Anti-Inflammatories: A Screening of Botantical Microglia Modulators

    Science.gov (United States)

    2016-10-01

    AWARD NUMBER: W81XWH-14-1-0623 TITLE: Treating Gulf War Illness with Novel Anti-Inflammatories: A Screening of Botantical Microglia Modulators...Report 3. DATES COVERED 30 Sep 2015 - 29 Sep 2016 4. TITLE AND SUBTITLE 5a. CONTRACT NUMBER Treating Gulf War Illness with Novel Anti...SUBJECT TERMS Gulf War Illness, botanical, anti-inflammatory, biomarker, microglia, improvement, treatment 16. SECURITY CLASSIFICATION OF: 17

  10. Sediment characteristics, brine chemistry and evolution of murayr sabkha, Arabian (persian) gulf, saudi arabia

    International Nuclear Information System (INIS)

    Basyoni, Mohammed H; Mousa Basim A

    2009-01-01

    Murayr Sabkha, on the western coast of the Arabian (Persian) Gulf, Saudi Arabia, is a siliciclastic dominated sabkha, with minor bioclasts and shells derived from the shore area and the surrounding tertiary carbonates. The sabkha is subdivided into three areas: the vegetated sabkha, the bare sabkha and artificial saline pan. The vegetated sabkha area surrounds the bare sabkha surface, composed of wind blown sand and reworked gypsum crystals. This area is far from the present day water table, and is covered with halophytes that increase in density towards the bare sabkha area. The bare sabkha area is located about one meter below the surface of the vegetated sabkha area. It is wet most of the time, as the water table is shallow (< 120 cm in depth). The surface of this area is composed of thin buckling crusts, polygonal tepee ridges, and efflorescent gypsum and/or halite patches. The saline pan is an artificial excavation near the eastern part of the sabkha and is filled with seepage groundwater. It is floored with a crust of grass-like gypsum crystals. Petrographic, mineralogic (by XRD), and field examinations of sediment samples collected from 32 trenches in the sabkha revealed that gypsum is the dominant sulfate mineral recorded in the sabkha. The gypsum is formed of random lenticular mud-sized and sand-sized crystals at the top 70 cm, and aggregates of lenticular and rosette gravelsized crystals near the water table. Halite is recorded at/near the sediment surface as efflorescent crust and cement, respectively. Anhydrite is recorded near the water table, whereas celestite is recorded near the gulf side. Based on a study of 32 brine samples in Murayr Sabkha, it was found that the groundwater in the sabkha is of chloride type (MgCl2 and CaCl2) of marine origin. It is recharged mainly from seepage of recent marine water from the gulf side and from marine and meteoric waters reacted with the surrounding carbonates. It seems that the capillary rise of these waters

  11. Hydrocarbon distributions in sediments of the open area of the Arabian Gulf following the 1991 Gulf War oil spill

    International Nuclear Information System (INIS)

    Al-Lihaibi, S.S.; Ghazi, S.J.

    1997-01-01

    Surface sediments collected from the open area of the Arabian Gulf were analysed for total petroleum hydrocarbons and specific aliphatic hydrocarbon components in order to provide information on the extent of oil contamination and the degree of weathering of the spilled oil following the Gulf War. The surface distribution of the petroleum hydrocarbons showed an increasing trend towards the north-east, and among the individual transects there was a pronounced increasing trend towards the north-west direction. Despite off-shore oil-related activities as well as a potential impact from the 1991 oil spill, the concentrations of petroleum hydrocarbons in the study area were relatively low. This finding may be attributed to the effectiveness of weathering processes. (author)

  12. A proposed global stratotype for the second series of the Ordovician system: Cow Head Peninsula, western Newfoundland

    Energy Technology Data Exchange (ETDEWEB)

    Williams, S H [Memorial Univ. of Newfoundland, St. John' s, NF (Canada); Barnes, C R [Victoria Univ., BC (Canada); Boyce, W D [Newfoundland Dept. of Mines and Energy, St. John' s, NF (Canada); O' Brien, F H C

    1994-06-01

    The first occurrence of Tetragraptus approximatus approximatus is now taken to mark the base of the second (Arenig) series of the Ordovician System. It is proposed that the Cow Head Peninsula, western Newfoundland, be adopted for Global Stratotype Section and Point (GSSP), with the boundary placed at the base of the T. approximatus Zone, 2.9 m above the base of the Factory Cove Member, Shallow Bay Formation of the Cow Head Group. The well-preserved graptolite fauna occurs in association with abundant conodonts, demonstrating this level to correspond closely with the base of the Prionodus elegans conodont Zone. Immediately underlying strata yield bithecate graptoloid assemblages, generally taken as indicating the latest part of the previous (Tremadoc) series. Neighbouring sections also yield typically Tremadoc deep-water trilobites from this level, permitting correlation between the three fossil groups. Other fossils including acritarchs, are also present in the Cow Head sections, which are structurally simple, of low thermal maturity (CAI 1.5 or less) and suitable for chemo- and magnetostratigraphic studies. 80 refs., 8 figs.

  13. Crude accounting for the Gulf of Mexico Inc

    International Nuclear Information System (INIS)

    Rubenstein, D.B.

    2010-08-01

    Ecological economists propose attaching monetary value to large-scale aquatic, terrestrial and oceanic ecosystems. In 2010, the International Institute for Sustainable Development (IISD) published an analysis of the accident that occurred in the Gulf of Mexico oil rig and made recommendations regarding the reporting of information on the impacts of natural resource extraction companies on the large-scale ecosystems. The communication of these data will benefit to interested parties, documenting ecological and economic risks related to resource extraction operations. The Deepwater Horizon ecological catastrophe points out the need for consistent, decisive environmental accounting basics but it also shows that limits of nature's carrying capacity have to be clarified. This results in looking for the reasons and the ways to attribute values to nature in order to enable nature to compete with the financial calculations of return on investment in the global capital markets. 15 refs.

  14. Numerical modelling of tides and tidal currents in the Gulf of Kutch

    Digital Repository Service at National Institute of Oceanography (India)

    Unnikrishnan, A.S.

    An application of a two-dimensional tidal model to study the tidal regime in the Gulf of Kutch is made. This is with a view to synthesise various information on tides and currents that are available in the Gulf. A comparison of surface elevations...

  15. Oil Reserves and Production in the Gulf with Special Reference to Qatar

    International Nuclear Information System (INIS)

    Ibrahim, Ismail.

    1998-01-01

    Oil and natural gas potential of the Gulf Arab Countries is substantial. The proven oil reserves of these countries constitute 55% of total world proven oil reserves. The Gulf Arab Countries possess 576 billion barrels of proven crude oil reserves, as compared to total world proven oil reserves of around 1047. Natural gas resources are also plentiful in the Gulf Arab Countries. Proven natural gas reserves were estimated at around 26 trillion cubic metres, at the beginning of 1997. This figure represents around 17% of total world proven natural gas reserves of around 153 trillion cubic metres

  16. Secular Changes in the Solar Semidiurnal Tide of the Western North Atlantic Ocean

    Science.gov (United States)

    Ray, Richard D.

    2009-01-01

    An analysis of twentieth century tide gauge records reveals that the solar semidiurnal tide S, has been decreasing in amplitude along the eastern coast of North America and at the mid-ocean site Bermuda. In relative terms the observed rates are unusually large, of order 10% per century. Periods of greatest change, however, are inconsistent among the stations, and roughly half the stations show increasing amplitude since the late 1990s. Excepting the Gulf of Maine, lunar tides are either static or slightly increasing in amplitude; a few stations show decreases. Large changes in solar, but not lunar, tides suggest causes related to variable radiational forcing, but the hypothesis is at present unproven. Citation: Ray, R. D. (2009), Secular changes in the solar semidiurnal tide of the western North Atlantic Ocean

  17. Gulf Canada Resources Ltd. annual information form for the year ended December 31, 1992

    International Nuclear Information System (INIS)

    1993-01-01

    Gulf Canada Resources Limited is a major explorer and producer of oil and natural gas. Important areas of activity are Western Canada, the Beaufort Sea, the Newfoundland offshore, and Indonesia and Russia. The company also operates gas processing plants and pipelines, and participates in oil sands projects in Alberta and a coal mine in British Columbia. This report reviews the company's activities over the year, providing descriptions of Canadian and international operations along with financial statements and associated information. Some highlights included an increase in liquids production from 92,600 bbl/d in 1991 to 96,800 bbl/d in 1992, a drop in natural gas production from 338 to 319 million cubic feet/day, and cancellation of the commitment to the Hibernia project. Also described are incorporation information, general development of the business, a narrative description of the business, selected consolidated financial information, management's discussion and analysis of financial conditions and results of operations, market for securities, directors and officers, and supplementary oil and gas information

  18. Critical research needs for identifying future changes in Gulf coral reef ecosystems

    KAUST Repository

    Feary, David A.

    2013-07-01

    Expert opinion was assessed to identify current knowledge gaps in determining future changes in Arabian/Persian Gulf (thereafter \\'Gulf\\') coral reefs. Thirty-one participants submitted 71 research questions that were peer-assessed in terms of scientific importance (i.e., filled a knowledge gap and was a research priority) and efficiency in resource use (i.e., was highly feasible and ecologically broad). Ten research questions, in six major research areas, were highly important for both understanding Gulf coral reef ecosystems and also an efficient use of limited research resources. These questions mirrored global evaluations of the importance of understanding and evaluating biodiversity, determining the potential impacts of climate change, the role of anthropogenic impacts in structuring coral reef communities, and economically evaluating coral reef communities. These questions provide guidance for future research on coral reef ecosystems within the Gulf, and enhance the potential for assessment and management of future changes in this globally significant region. © 2013 Elsevier Ltd.

  19. Thermocline Regulated Seasonal Evolution of Surface Chlorophyll in the Gulf of Aden

    KAUST Repository

    Hoteit, Ibrahim

    2015-04-01

    The Gulf of Aden, although subject to seasonally reversing monsoonal winds, has been previously reported as an oligotrophic basin during summer, with elevated chlorophyll concentrations only occurring during winter due to convective mixing. However, the Sea-Viewing Wide Field-of-View Sensor (SeaWiFS) ocean color data reveal that the Gulf of Aden also exhibits a prominent summer chlorophyll bloom and sustains elevated chlorophyll concentrations throughout the fall, and is a biophysical province distinct from the adjacent Arabian Sea. Climatological hydrographic data suggest that the thermocline, hence the nutricline, in the entire gulf is markedly shoaled by the southwest monsoon during summer and fall. Under this condition, cyclonic eddies in the gulf can effectively pump deep nutrients to the surface layer and lead to the chlorophyll bloom in late summer, and, after the transition to the northeast monsoon in fall, coastal upwelling driven by the northeasterly winds produces a pronounced increase in surface chlorophyll concentrations along the Somali coast.

  20. Thermocline Regulated Seasonal Evolution of Surface Chlorophyll in the Gulf of Aden

    KAUST Repository

    Yao, Fengchao

    2015-03-19

    The Gulf of Aden, although subject to seasonally reversing monsoonal winds, has been previously reported as an oligotrophic basin during summer, with elevated chlorophyll concentrations only occurring during winter due to convective mixing. However, the Sea-Viewing Wide Field-of-View Sensor (SeaWiFS) ocean color data reveal that the Gulf of Aden also exhibits a prominent summer chlorophyll bloom and sustains elevated chlorophyll concentrations throughout the fall, and is a biophysical province distinct from the adjacent Arabian Sea. Climatological hydrographic data suggest that the thermocline, hence the nutricline, in the entire gulf is markedly shoaled by the southwest monsoon during summer and fall. Under this condition, cyclonic eddies in the gulf can effectively pump deep nutrients to the surface layer and lead to the chlorophyll bloom in late summer, and, after the transition to the northeast monsoon in fall, coastal upwelling driven by the northeasterly winds produces a pronounced increase in surface chlorophyll concentrations along the Somali coast. © 2015 Yao, Hoteit.

  1. Mangrove diversity in the Serewe Gulf of Lombok Island West Nusa Tenggara

    Science.gov (United States)

    Irwansah, Sugiyarto, Mahajoeno, Edwi

    2017-08-01

    Mangrove forests are a valuable economic resource as important breeding grounds and nursery sites for various animal species, stabilizing coastal lands and offering protection against storms, tsunamis, and sea level rise. Mangrove forest growing along the coastline of Serewe Gulf. The Serewe Gulf has great potential in tourism and sea cultivation sector. The research was conducted in the Serewe Gulf of Lombok Island, West Nusa Tenggara for 2 months (November up to December 2016). The objective of this research is to determine the diversity of mangrove in the Serewe Gulf, Lombok Island, West Nusa Tenggara using belt transect method. The identification result shows that there are 9 families with 9 types such as Rhizophoraceae (Rhizophora mucronata), Avicenniaceae (Avicennia officinalis), Sonneratiaceae (Sonneratia alba), Casuarinaceae (Casuarina equisetifolia), Bignoniaceae (Dilochnadrone sthaceae), Malvaceae (Hibiscus tiliaceus), Lythraceae (Pemphis adicula), Aizoaceae (Sesivium portulacastrum), and Euphorbiaceae (Ricinus communis). The diversity of mangrove types in the research area is in medium rate with H' index of 1.668.

  2. Critical research needs for identifying future changes in Gulf coral reef ecosystems

    KAUST Repository

    Feary, David A.; Burt, John A.; Bauman, Andrew G.; Al Hazeem, Shaker; Abdel-Moati, Mohamed A R; Al-Khalifa, Khalifa A.; Anderson, Donald M.; Amos, Carl L.; Baker, Andrew C.; Bartholomew, Aaron; Bento, Rita; Cavalcante, Geó rgenes H.; Chen, Chaolun Allen; Coles, Steve L.; Dab, Koosha; Fowler, Ashley M.; George, David Glen; Grandcourt, Edwin Mark; Hill, Ross; John, David Michael; Jones, David Alan; Keshavmurthy, Shashank; Mahmoud, Huda M A; Moradi Och Tapeh, Mahdi; Mostafavi, Pargol Ghavam; Naser, Humood A.; Pichon, Michel; Purkis, Sam J.; Riegl, Bernhard M.; Samimi-Namin, Kaveh; Sheppard, Charles R C; Vajed Samiei, Jahangir; Voolstra, Christian R.; Wiedenmann, Jö rg

    2013-01-01

    Expert opinion was assessed to identify current knowledge gaps in determining future changes in Arabian/Persian Gulf (thereafter 'Gulf') coral reefs. Thirty-one participants submitted 71 research questions that were peer-assessed in terms of scientific importance (i.e., filled a knowledge gap and was a research priority) and efficiency in resource use (i.e., was highly feasible and ecologically broad). Ten research questions, in six major research areas, were highly important for both understanding Gulf coral reef ecosystems and also an efficient use of limited research resources. These questions mirrored global evaluations of the importance of understanding and evaluating biodiversity, determining the potential impacts of climate change, the role of anthropogenic impacts in structuring coral reef communities, and economically evaluating coral reef communities. These questions provide guidance for future research on coral reef ecosystems within the Gulf, and enhance the potential for assessment and management of future changes in this globally significant region. © 2013 Elsevier Ltd.

  3. Anticancer and cytotoxic compounds from seashells of the Persian Gulf

    Directory of Open Access Journals (Sweden)

    Iraj Nabipour

    2009-12-01

    Full Text Available Background: Pre-clinical studies for isolation and purification of marine compounds continued at an active pace since the last decade. Today, more than 60% of the anticancer drugs commercially available are of naturally origin thus the sea is a very favorable bed for the discovery of novel anticancer agents. Methods: A total of known 611 seashells species in the Persian Gulf were investigated for synonymy in OBIS database. Then, all the species, including their synonymy were searched in PubMed databse to find their isolated bioactive agents. Results: From 611 known seashells in the Persian Gulf, 172 genera/species had bioactive compounds. Anticancer agents were isolated and purified for 8 genera. These compounds had various structures they were polypeptide, polysaccharide, glycoprotein, alkaloid, cerebroside, and cembranoid which had different mechanism of actions including induction of apoptosis, destroying the skeletal structures of the cells, immune bioactivity and inhibition of topoisomerase I. Spisulosine is the only anticancer agent which is currently under clinical trial. Conclusions: Although, the known seashells from the Persian Gulf have potential anticancer and cytotoxic compounds but a very few investigations had been reported. Further investigations for isolation and purification on bioactive compounds from seashells of the Persian Gulf is recommended.

  4. Integrated survey of elemental stoichiometry (C, N, P from the western to eastern Mediterranean Sea

    Directory of Open Access Journals (Sweden)

    M. Pujo-Pay

    2011-04-01

    Full Text Available This paper provides an extensive vertical and longitudinal description of the biogeochemistry along an East-West transect of 3000 km across the Mediterranean Sea during summer 2008 (BOUM cruise. During this period of strong stratification, the distribution of nutrients, particulate and dissolved organic carbon (DOC, nitrogen (DON and phosphorus (DOP were examined to produce a detailed spatial and vertically extended description of the elemental stoichiometry of the Mediterranean Sea. Surface waters were depleted in nutrients and the thickness of this depleted layer increased towards the East from about 10 m in the Gulf of Lion to more than 100 m in the Levantine basin, with the phosphacline deepening to a greater extent than that for corresponding nitracline and thermocline depths. We used the minimum oxygen concentration through the water column in combination with 2 fixed concentrations of dissolved oxygen to distinguish an intermediate layer (Mineralization Layer; ML from surface (Biogenic Layer; BL, and deep layers (DL. Whilst each layer was represented by different water masses, this approach allowed us to propose a schematic box-plot representation of the biogeochemical functioning of the two Mediterranean basins. Despite the increasing oligotrophic nature and the degree of P-depletion along the West to East gradient strong similarities were encountered between eastern and western ecosystems. Within the BL, the C:N:P ratios in all pools largely exceeded the Redfield ratios, but surprisingly, the nitrate vs. phosphate ratios in the ML and DL tended towards the canonical Redfield values in both basins. A change in particulate matter composition has been identified by a C increase relative to N and P along the whole water column in the western basin and between BL and ML in the eastern one. Our data showed a noticeable stability of the DOC:DON ratio (12–13 throughout the Mediterranean Sea. This is in good agreement with a P-limitation of

  5. Shuttles set for US Gulf lift off

    Energy Technology Data Exchange (ETDEWEB)

    DeLuca, Marshall

    2002-09-01

    The author reports on discussions with two US companies about plans for using shuttle tankers to transport oil from platforms in the Gulf of Mexico to US ports as an alternative to pipeline networks. This follows approval by the US Minerals Management Service for FPSOs in the Gulf. The companies are American Shuttle Tankers and Conoco-owned Seahorse Shuttling and Technology. Because the vessels will enter US ports and operate in US waters, they must conform with the US Jones Act: they must be US-built, US-flagged and manned by US crews. They must also be double-hulled. This increases cost and reduces market opportunities for the vessels outside the US. The article also considers the use of articulated tug barges as another option. (UK)

  6. Gulf of Mexico forecasts : the dead sea

    International Nuclear Information System (INIS)

    Good Abbott, C.

    1999-01-01

    The future gas supply potential from the offshore Gulf of Mexico region was discussed with particular emphasis on the issue of whether there is enough growth potential to satisfy the anticipated growth in power generation markets. In 1980, a forecasted decrease in gas supply proved to be wrong. In fact, supply actually increased and productivity in the Gulf of Mexico has been relatively stable since 1982. A significant growth has been forecasted for 1997 to 2010. This growth will coincide with a large growth in gas demand in the northeastern U.S. The fact that electric power generation is changing hands adds to the opportunities in the northeast. It was emphasized that Canadian supply must be present to compete. 1 tab., 16 figs

  7. 78 FR 29331 - Proposed Information Collection; Comment Request; Western Alaska Community Development Quota Program

    Science.gov (United States)

    2013-05-20

    ... before July 19, 2013. ADDRESSES: Direct all written comments to Jennifer Jessup, Departmental Paperwork... economies in western Alaska. CDQ and prohibited species quota (PSQ) allocations are made to CDQ groups.... Information is collected only through quota transfers in this collection. II. Method of Collection Respondents...

  8. 75 FR 5760 - Proposed Information Collection; Comment Request; Western Alaska Community Development Quota Program

    Science.gov (United States)

    2010-02-04

    ... before April 5, 2010. ADDRESSES: Direct all written comments to Diana Hynek, Departmental Paperwork... and diversified local economies in western Alaska. CDQ and prohibited species quota (PSQ) allocations... collection. II. Method of Collection Respondents have a choice of either electronic or paper forms. Methods...

  9. Systematic heat flow measurements across the Wagner Basin, northern Gulf of California

    Science.gov (United States)

    Neumann, Florian; Negrete-Aranda, Raquel; Harris, Robert N.; Contreras, Juan; Sclater, John G.; González-Fernández, Antonio

    2017-12-01

    A primary control on the geodynamics of rifting is the thermal regime. To better understand the geodynamics of rifting in the northern Gulf of California we systematically measured heat-flow across the Wagner Basin, a tectonically active basin that lies near the southern terminus of the Cerro Prieto fault. The heat flow profile is 40 km long, has a nominal measurement spacing of ∼1 km, and is collocated with a seismic reflection profile. Heat flow measurements were made with a 6.5-m violin-bow probe. Although heat flow data were collected in shallow water, where there are significant temporal variations in bottom water temperature, we use CTD data collected over many years to correct our measurements to yield accurate values of heat flow. After correction for bottom water temperature, the mean and standard deviation of heat flow across the western, central, and eastern parts of the basin are 220 ± 60, 99 ± 14, 889 ± 419 mW m-2, respectively. Corrections for sedimentation would increase measured heat flow across the central part of basin by 40 to 60%. We interpret the relatively high heat flow and large variability on the western and eastern flanks in terms of upward fluid flow at depth below the seafloor, whereas the lower and more consistent values across the central part of the basin are suggestive of conductive heat transfer. Moreover, heat flow across the central basin is consistent with gabbroic underplating at a depth of 15 km and suggests that continental rupture here has not gone to completion.

  10. Spatial analysis of the etiology of amyotrophic lateral sclerosis among 1991 Gulf War veterans.

    Science.gov (United States)

    Miranda, Marie Lynn; Alicia Overstreet Galeano, M; Tassone, Eric; Allen, Kelli D; Horner, Ronnie D

    2008-11-01

    Veterans of the 1991 Gulf War have an increased risk of amyotrophic lateral sclerosis (ALS), but the etiology is unknown. This study sought to identify geographic areas with elevated risk for the later development of ALS among military personnel who served in the first Gulf War. A unified geographic information system (GIS) was constructed to allow analysis of secondary data on troop movements in the 1991 Gulf War theatre in the Persian Gulf region including Iraq, northern Saudi Arabia, and Kuwait. We fit Bayesian Poisson regression models to adjust for potential risk factors, including one relatively discrete environmental exposure, and to identify areas associated with elevated risk of ALS. We found that service in particular locations of the Gulf was associated with an elevated risk for later developing ALS, both before and after adjustment for branch of service and potential of exposure to chemical warfare agents in and around Khamisiyah, Iraq. Specific geographic locations of troop units within the 1991 Gulf War theatre are associated with an increased risk for the subsequent development of ALS among members of those units. The identified spatial locations represent the logical starting points in the search for potential etiologic factors of ALS among Gulf War veterans. Of note, for locations where the relative odds of subsequently developing ALS are among the highest, specific risk factors, whether environmental or occupationally related, have not been identified. The results of spatial models can be used to subsequently look for risk factors that follow the spatial pattern of elevated risk.

  11. Gulf war depleted uranium risks.

    Science.gov (United States)

    Marshall, Albert C

    2008-01-01

    US and British forces used depleted uranium (DU) in armor-piercing rounds to disable enemy tanks during the Gulf and Balkan Wars. Uranium particulate is generated by DU shell impact and particulate entrained in air may be inhaled or ingested by troops and nearby civilian populations. As uranium is slightly radioactive and chemically toxic, a number of critics have asserted that DU exposure has resulted in a variety of adverse health effects for exposed veterans and nearby civilian populations. The study described in this paper used mathematical modeling to estimate health risks from exposure to DU during the 1991 Gulf War for both US troops and nearby Iraqi civilians. The analysis found that the risks of DU-induced leukemia or birth defects are far too small to result in an observable increase in these health effects among exposed veterans or Iraqi civilians. The analysis indicated that only a few ( approximately 5) US veterans in vehicles accidentally targeted by US tanks received significant exposure levels, resulting in about a 1.4% lifetime risk of DU radiation-induced fatal cancer (compared with about a 24% risk of a fatal cancer from all other causes). These veterans may have also experienced temporary kidney damage. Iraqi children playing for 500 h in DU-destroyed vehicles are predicted to incur a cancer risk of about 0.4%. In vitro and animal tests suggest the possibility of chemically induced health effects from DU internalization, such as immune system impairment. Further study is needed to determine the applicability of these findings for Gulf War exposure to DU. Veterans and civilians who did not occupy DU-contaminated vehicles are unlikely to have internalized quantities of DU significantly in excess of normal internalization of natural uranium from the environment.

  12. Assessing aquifer storage and recovery feasibility in the Gulf Coastal Plains of Texas

    Directory of Open Access Journals (Sweden)

    W. Benjamin Smith

    2017-12-01

    Full Text Available Study region: The Gulf Coast and Carrizo-Wilcox aquifer systems in the Gulf Coastal Plains of Texas. Study focus: Aquifer storage and recovery is a water storage alternative that is underutilized in Texas, a state with both long periods of drought and high intensity storms. Future water storage plans in Texas almost exclusively rely on surface reservoirs, subject to high evaporative losses. This study seeks to identify sites where aquifer storage and recovery (ASR may be successful, especially in recovery of injected waters, by analyzing publicly-available hydrogeologic data. Transmissivity, hydraulic gradient, well density, depth to aquifer, and depth to groundwater are used in a GIS-based index to determine feasibility of implementing an ASR system in the Gulf Coast and Carrizo-Wilcox aquifer systems. New hydrological insights for the region: Large regions of the central and northern Gulf Coast and the central and southern Carrizo-Wilcox aquifer systems are expected to be hydrologically feasible regions for ASR. Corpus Christi, Victoria, San Antonio, Bryan, and College Station are identified as possible cities where ASR would be a useful water storage strategy. Keywords: Aquifer storage and recovery (ASR, GIS, Gulf coast, Carrizo-Wilcox, Managed aquifer recharge (MAR

  13. Baseline concentrations of strontium and 90Sr in seawater from the northern Gulf

    International Nuclear Information System (INIS)

    Uddin, S.; Al Ghadban, A.N.; Behbahani, M.

    2013-01-01

    Highlights: • This is the first baseline for strontium and 90 Sr from northern Gulf. • The total strontium concentration is much higher than reported for other oceans. • The Sr/salinity ratio correlates well with global averages. • High Sr might be due to increased salinity/CaCo 3 dissolution in acidifying Gulf waters. -- Abstract: Baseline concentration of strontium and Sr-90 in Gulf is presented. The strontium concentration is much higher than reported for other oceanic waters, while the Sr-90 concentration is low at 0.7–1.0 mBq l −1 , that represents the background level following nuclear tests and can be used as an effective tracer in case of any radioactive release in the region. The strontium concentration is primarily related to the increasing salinity off the Gulf coast

  14. Simulated Impacts of Juvenile Mortality on Gulf of Mexico Sturgeon Populations

    Directory of Open Access Journals (Sweden)

    William B. Tate

    2002-01-01

    Full Text Available We used an age-structured computer model to assess the impact of changes in juvenile mortality on the Gulf of Mexico sturgeon population in the Suwannee River, Florida. We simulated population trends under four levels of annual juvenile mortality (20, 25, 30, and 35%. As the rate of mortality increased, population size decreased, and rates of population growth shifted from positive to negative. Our models indicated that juvenile survival is important to the success of gulf sturgeon populations, and mortality estimates are needed to predict population viability. We suggest that life history studies in estuaries should be conducted, and bycatch rates for commercial fisheries should be quantified to aid in the management and conservation of gulf sturgeon.

  15. Gulf of Aqaba Field Trip - Datasets

    KAUST Repository

    Hanafy, Sherif M.; Jonsson, Sigurjon; Klinger, Yann

    2013-01-01

    and 2D resistivity imaging to locate the fault. One seismic profile and one 2D resistivity profile are collected at an alluvial fan on the Gulf of Aqaba coast in Saudi Arabia. The collected data are inverted to generate the traveltime tomogram

  16. 76 FR 50245 - Gulf of Mexico (GOM), Outer Continental Shelf (OCS), Western Planning Area (WPA), Oil and Gas...

    Science.gov (United States)

    2011-08-12

    ... (BOEMRE), Interior. ACTION: Notice of Availability (NOA) of a Final Supplemental Environmental Impact... sale's incremental contribution to the cumulative impacts on environmental and socioeconomic resources... Mexico (GOM), Outer Continental Shelf (OCS), Western Planning Area (WPA), Oil and Gas Lease Sale for the...

  17. Coupled study of radionuclides and stable lead isotopes in Western Mediterranean

    International Nuclear Information System (INIS)

    Miralles, J.

    2004-05-01

    The aim of this work is to identified an environmental deposit able to have stored the atmospheric signal over large time-scale leaning our investigations on lead stable isotopes ( 206 Pb, 207 Pb, 208 Pb) and radionuclide ( 210 Pb, 137 Cs, 239 Pu, 240 Pu) analysis. Owing to prior studies on anthropogenic lead sources, emission intensity and sedimentary accumulation, we choose to investigate the marine sediments of the Western Mediterranean. In the Gulf of Lions, the sedimentary accumulation is 110 ± 7 μg.cm -2 high in good agreement with the atmospheric inventory estimate we made from salt marshes of Camargue (99 μg.cm -2 ). The reconstructed lead accumulation through a modelling step coupling 210 Pb and stable isotopes corroborates the regional anthropogenic emissions (Ferrand, 1996). Briefly, in this context of the marine sediments are a relevant proxy to study past lead atmospheric concentration over the last hundred years. In the Alboran Sea, the study area is less constrained and more complex in terms of climatic, meteorological and hydrological conditions. The sedimentary inventory is of 153 ± 47 μg.cm -2 , 1,5 higher than in the margin sediments of the Gulf of Lions. The analysis of aerosols, sediments and settling particles evidences a continuity between the atmospheric signal and the sedimentary record. In spite of this encouraging results, the knowledge of the Alboran system is still too restricted in order to unambiguously conclude on accuracy of deep marine sediments of this area to study past atmospheric fallouts. (author)

  18. Sediment concentration and bed form structures of Gulf of Cambay from remote sensing

    Digital Repository Service at National Institute of Oceanography (India)

    Kunte, P.D.

    period, the bottom currents pull sediment (sand) particles supplied by major and minor rivers, rolling along the Gulf bed. These sediments perhaps participate in the formation of bed form structures. The topography of the Gulf bottom comprises of numerous...

  19. Sea Snake Harvest in the Gulf of Thailand

    DEFF Research Database (Denmark)

    Van Cao, Nguyen; Thien Tao, Nguyen; Moore, Amelia

    2014-01-01

    Abstract: Conservation of sea snakes is virtually nonexistent in Asia, and its role in human–snake interactions in terms of catch, trade, and snakebites as an occupational hazard is mostly unexplored. We collected data on sea snake landings from the Gulf of Thailand, a hotspot for sea snake harvest...... years), and the treatment of sea snake bites with rhinoceros horn. Emerging markets in Southeast Asia drive the harvest of venomous sea snakes in the Gulf of Thailand and sea snake bites present a potentially lethal occupational hazard. We call for implementation of monitoring programs to further...... address the conservation implications of this large-scale marine reptile exploitation....

  20. Seasonal Composite Chlorophyll Concentrations - Gulf of Maine

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This personal geodatabase contains raster images of chlorophyll concentrations in the Gulf of Maine. These raster images are seasonal composites, and were calculated...