WorldWideScience

Sample records for beaches

  1. Human Health at the Beach

    Science.gov (United States)

    ... Agency Search Search Beaches Contact Us Share LEARN: Human Health at the Beach Swimming at beaches with ... water pollution, there are other potential threats to human health at the beach to be aware of. ...

  2. Beach Profile Locations

    Data.gov (United States)

    California Natural Resource Agency — Beaches are commonly characterized by cross-shore surveys. The resulting profiles represent the elevation of the beach surface and nearshore seabed from the back of...

  3. Beach Profile Locations

    Data.gov (United States)

    California Department of Resources — Beaches are commonly characterized by cross-shore surveys. The resulting profiles represent the elevation of the beach surface and nearshore seabed from the back of...

  4. Process controlling beach nourishment performance at Delray Beach, Florida, USA

    NARCIS (Netherlands)

    Benedet, L.

    2016-01-01

    Beach erosion is a chronic problem in the southeast coast of the State of Florida, where Delray Beach is located. To mitigate increasing erosion problems (subsequent) beach nourishment projects were constructed along the entire sandy coast of the state of Florida. At Delray Beach, the beach was

  5. Apparent Preferences of Beach Users at Virginia Beach Resort Zone

    OpenAIRE

    MacBean, Anna Ruth

    2013-01-01

    After compiling an appropriate list of beach criteria from established award programs and experts, the research landscape architect observed the Virginia Beach Resort Zone for areas of intense beach user activity.  The resulting analysis of these "hot-spots" indicated that urban resort beach users visiting the recreational beach during high-use times tended to gravitate toward locations on the resort beach which were close to three needs:  public parking, public restrooms, and inexpensive ref...

  6. National List of Beaches

    Data.gov (United States)

    U.S. Environmental Protection Agency — EPA has published a list of coastal recreation waters adjacent to beaches (or similar points of access) used by the public in the U.S. The list, required by the...

  7. Beach Ball Coronagraph

    Data.gov (United States)

    National Aeronautics and Space Administration — A precision formation flying coronagraph with an inflatable, passive ‘beach ball’ occulter has the chance to make possible the next generation of advances in coronal...

  8. Summary of Annual Beach Notifications

    Data.gov (United States)

    U.S. Environmental Protection Agency — To help beachgoers make informed decisions about swimming at U.S. beaches, EPA gathers state-by-state data about beach closings and advisories. Between 1999 and...

  9. Morphodynamics of Prograding Beaches

    Science.gov (United States)

    Ruggiero, P.

    2012-12-01

    Long-term coastal evolution often results from the cumulative effects of small residual differences between relatively large signals. In light of dire projections of sea level rise over the next several decades to century, there is a strong societal need for accurate forecasts of net interannual- to decadal-scale coastal change. However, our present understanding of the processes responsible for storm-induced erosion and coastal recession is significantly more advanced than our knowledge of coastal recovery during calm periods. To investigate the processes and morphodynamics associated with progading beaches we synthesize findings from a long-term (15 years) beach morphology monitoring program in the U.S. Pacific Northwest. Most of the beaches along the Columbia River littoral cell (northwest Oregon and southwest Washington) were eroded during the two intense winters of 1997/1998 (a major El Niño event) and 1998/1999 (a moderate La Niña event). Subsequent to these winters the beaches have exhibited net residual progradation of several meters per year resulting in significant shoreline advance. During this same period as many as two to three new foredunes formed with backshore beach profiles accumulating sand at rates of well over 10 m3/m/yr. Interestingly, these large signals of horizontal and vertical coastal advance have occurred on beaches in which nearshore morphological variability is dominated by net offshore sandbar migration. Net offshore sandbar migration follows a three-stage process; bar generation near the shoreline, seaward migration, and bar degeneration in the outer nearshore with a cyclic return period of approximately 4 to 5 years in the region. Gradients in alongshore sediment transport, net onshore directed cross-shore sediment transport within the surf zone, and cross-shore feeding from a shoreface out of equilibrium with forcing conditions may each be partially responsible for the sediment supplied to the beaches and dunes during the study

  10. Gravel beaches nourishment: Modelling the equilibrium beach profile.

    Science.gov (United States)

    López, I; Aragonés, L; Villacampa, Y; Navarro-González, F J

    2018-04-01

    The erosion of the world's coasts and the shortage of sand to mitigate beach erosion are leading to the increasingly common use of gravel for coastal protection and beach nourishment. Therefore, in order to determine the amount of gravel required for such actions, it is important to know perfectly the equilibrium profile of gravel beaches. However, at present, this profile is obtained from formulas obtained mainly after channel tests, and therefore most of them do not adapt to the real profiles formed by gravel beaches in nature. In this article, 31 variables related to sedimentology, waves, morphology and marine vegetation present on the beaches are studied to determine which are the most influential in the profile. From the study carried out, it is obtained that these variables are the steepness and probability of occurrence of the wave perpendicular to the coast, the profile starting slope (between MWL and -2m), the energy reduction coefficient due to Posidonia oceanica as well as the width of the meadow. Using these variables, different numerical models were generated to predict accurately the gravel beach profile, which will lead to a saving in the volume of material used in the order of 1300m 3 /ml of beach with respect to current formulations, and a greater certainty that the beach nourishment carried out will have the desired effect. Copyright © 2017 Elsevier B.V. All rights reserved.

  11. BeachWin: Modelling groundwater effects on swash sediment transport and beach profile changes

    OpenAIRE

    Li, L.; Barry, D. A.; Pattiaratchi, C. B.; Masselink, G.

    2002-01-01

    Field and laboratory observations have shown that a relatively low beach groundwater table enhances beach accretion. These observations have led to the beach dewatering technique (artificially lowering the beach water table) for combating beach erosion. Here we present a process-based numerical model that simulates the interacting wave motion on the beach, coastal groundwater flow, swash sediment transport and beach profile changes. Results of model...

  12. 76 FR 54703 - Safety Zone; Myrtle Beach Triathlon, Atlantic Intracoastal Waterway, Myrtle Beach, SC

    Science.gov (United States)

    2011-09-02

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; Myrtle Beach Triathlon, Atlantic Intracoastal Waterway, Myrtle Beach, SC AGENCY: Coast Guard, DHS. ACTION: Temporary final rule. SUMMARY: The... Beach, South Carolina during the Myrtle Beach Triathlon. The Myrtle Beach Triathlon, which is comprised...

  13. 76 FR 37700 - Safety Zone; Myrtle Beach Triathlon, Atlantic Intracoastal Waterway, Myrtle Beach, SC

    Science.gov (United States)

    2011-06-28

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; Myrtle Beach Triathlon, Atlantic Intracoastal Waterway, Myrtle Beach, SC AGENCY: Coast Guard, DHS. ACTION: Notice of proposed rulemaking... Waterway in Myrtle Beach, South Carolina during the Myrtle Beach Triathlon. The Myrtle Beach Triathlon...

  14. 77 FR 14321 - Safety Zone; Myrtle Beach Triathlon, Atlantic Intracoastal Waterway, Myrtle Beach, SC

    Science.gov (United States)

    2012-03-09

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; Myrtle Beach Triathlon, Atlantic Intracoastal Waterway, Myrtle Beach, SC AGENCY: Coast Guard, DHS. ACTION: Notice of proposed rulemaking... Waterway in Myrtle Beach, South Carolina during the Myrtle Beach Triathlon. The Myrtle Beach Triathlon...

  15. 77 FR 50019 - Safety Zone; Cocoa Beach Air Show, Atlantic Ocean, Cocoa Beach, FL

    Science.gov (United States)

    2012-08-20

    ... 1625-AA00 Safety Zone; Cocoa Beach Air Show, Atlantic Ocean, Cocoa Beach, FL AGENCY: Coast Guard, DHS... waters of the Atlantic Ocean located east of Cocoa Beach, Florida during the Cocoa Beach Air Show. The Cocoa Beach Air Show will include aircraft engaging in aerobatic maneuvers. The event is scheduled to...

  16. Governance in a beach seine fishery

    NARCIS (Netherlands)

    Medard, Modesta; Dijk, Van Han; Hebinck, Paul; Geheb, Kim

    2016-01-01

    Beach seine gear is one of the prominent fishing gears in Nile Perch fishery. Before Nile Perch was introduced to the lake, beach seines the species targeted with beach seine were Tilapia, Bagrus, Haplochromis, Protopterus and Labeo. In 1994, beach seines were banned in Tanzania and by 2004, this

  17. Beach Volume Change Using Uav Photogrammetry Songjung Beach, Korea

    Science.gov (United States)

    Yoo, C. I.; Oh, T. S.

    2016-06-01

    Natural beach is controlled by many factors related to wave and tidal forces, wind, sediment, and initial topography. For this reason, if numerous topographic data of beach is accurately collected, coastal erosion/acceleration is able to be assessed and clarified. Generally, however, many studies on coastal erosion have limitation to analyse the whole beach, carried out of partial area as like shoreline (horizontal 2D) and beach profile (vertical 2D) on account of limitation of numerical simulation. This is an important application for prevention of coastal erosion, and UAV photogrammetry is also used to 3D topographic data. This paper analyses the use of unmanned aerial vehicles (UAV) to 3D map and beach volume change. UAV (Quadcopter) equipped with a non-metric camera was used to acquire images in Songjung beach which is located south-east Korea peninsula. The dynamics of beach topography, its geometric properties and estimates of eroded and deposited sand volumes were determined by combining elevation data with quarterly RTK-VRS measurements. To explore the new possibilities for assessment of coastal change we have developed a methodology for 3D analysis of coastal topography evolution based on existing high resolution elevation data combined with low coast, UAV and on-ground RTK-VRS surveys. DSMs were obtained by stereo-matching using Agisoft Photoscan. Using GCPs the vertical accuracy of the DSMs was found to be 10 cm or better. The resulting datasets were integrated in a local coordinates and the method proved to be a very useful fool for the detection of areas where coastal erosion occurs and for the quantification of beach change. The value of such analysis is illustrated by applications to coastal of South Korea sites that face significant management challenges.

  18. BEACH VOLUME CHANGE USING UAV PHOTOGRAMMETRY SONGJUNG BEACH, KOREA

    Directory of Open Access Journals (Sweden)

    C. I. Yoo

    2016-06-01

    Full Text Available Natural beach is controlled by many factors related to wave and tidal forces, wind, sediment, and initial topography. For this reason, if numerous topographic data of beach is accurately collected, coastal erosion/acceleration is able to be assessed and clarified. Generally, however, many studies on coastal erosion have limitation to analyse the whole beach, carried out of partial area as like shoreline (horizontal 2D and beach profile (vertical 2D on account of limitation of numerical simulation. This is an important application for prevention of coastal erosion, and UAV photogrammetry is also used to 3D topographic data. This paper analyses the use of unmanned aerial vehicles (UAV to 3D map and beach volume change. UAV (Quadcopter equipped with a non-metric camera was used to acquire images in Songjung beach which is located south-east Korea peninsula. The dynamics of beach topography, its geometric properties and estimates of eroded and deposited sand volumes were determined by combining elevation data with quarterly RTK-VRS measurements. To explore the new possibilities for assessment of coastal change we have developed a methodology for 3D analysis of coastal topography evolution based on existing high resolution elevation data combined with low coast, UAV and on-ground RTK-VRS surveys. DSMs were obtained by stereo-matching using Agisoft Photoscan. Using GCPs the vertical accuracy of the DSMs was found to be 10 cm or better. The resulting datasets were integrated in a local coordinates and the method proved to be a very useful fool for the detection of areas where coastal erosion occurs and for the quantification of beach change. The value of such analysis is illustrated by applications to coastal of South Korea sites that face significant management challenges.

  19. Beach Resilience to Coastal Structures on a Natural Beach

    Science.gov (United States)

    Torres-Freyermuth, A.; Medellín, G.; Hofman, A.; Tereszkiewicz, P.; Palemón-Arcos, L.; López-González, J.

    2016-12-01

    Beach resilience plays an important role on reducing coastal risk associated to either natural or human induced perturbations affecting the coast. Field experiments were conducted in order to investigate beach resilience in Sisal, Yucatán. Both impermeable and permeable 14-m groins were designed to asses the impact of coastal structures on the beach morphology during a 24-hour period. The experiments were conducted in the spring of 2015 and 2016, allowing the assessment of both structures under similar forcing conditions. Intense sea breeze events (W>12 m/s) generated high-angle short-waves, driving alongshore transport in the swash zone. Wind, waves, tides, and currents were measured concurrently and are correlated with beach morphology evolution data derived from intense monitoring conducted during the structure deployment. The impermeable structure induced a significant beach accretion (>60 m3/day) in the updrift side of the structure causing a tremendous impact downdrift. On the other hand, the permeable groin induced a smaller but still significant accretion (40 m3/day), allowing sediment bypass throughout the structure. Furthermore, the beach surveying continued after structures removal in order to estimate the beach recovery capability. Field observations show that the impact of the structure on the morphology is negligible six days after structure removal for the impermeable groin and only one day for the permeable structure. The latter suggests the high beach resilience of the study area. We acknowledge field support provided by researchers and students at the LIPC-UNAM. Financial support was provided by CONACYT (Projects LN271544 and Cátedras 1146), DGAPA-UNAM (PAPIIT-IN107315) and Grupo BARI.

  20. Landing Techniques in Beach Volleyball

    Science.gov (United States)

    Tilp, Markus; Rindler, Michael

    2013-01-01

    The aims of the present study were to establish a detailed and representative record of landing techniques (two-, left-, and right-footed landings) in professional beach volleyball and compare the data with those of indoor volleyball. Beach volleyball data was retrieved from videos taken at FIVB World Tour tournaments. Landing techniques were compared in the different beach and indoor volleyball skills serve, set, attack, and block with regard to sex, playing technique, and court position. Significant differences were observed between men and women in landings following block actions (χ2(2) = 18.19, p volleyball revealed overall differences both in men (χ2(2) = 161.4, p volleyball players land more often on both feet than indoor volleyball players. Besides the softer surface in beach volleyball, and therefore resulting lower loads, these results might be another reason for fewer injuries and overuse conditions compared to indoor volleyball. Key Points About 1/3 of all jumping actions in beach volleyball result in a landing on one foot. Especially following block situations men land on one foot more often than women. Landing techniques are related to different techniques and positions. Landings on one foot are less common in beach volleyball than indoor volleyball. This could be a reason for fewer injuries and overuse conditions. PMID:24149150

  1. LANDING TECHNIQUES IN BEACH VOLLEYBALL

    Directory of Open Access Journals (Sweden)

    Markus Tilp

    2013-09-01

    Full Text Available The aims of the present study were to establish a detailed and representative record of landing techniques (two-, left-, and right-footed landings in professional beach volleyball and compare the data with those of indoor volleyball. Beach volleyball data was retrieved from videos taken at FIVB World Tour tournaments. Landing techniques were compared in the different beach and indoor volleyball skills serve, set, attack, and block with regard to sex, playing technique, and court position. Significant differences were observed between men and women in landings following block actions (χ²(2 = 18.19, p < 0.01 but not following serve, set, and attack actions. Following blocking, men landed more often on one foot than women. Further differences in landings following serve and attack with regard to playing technique and position were mainly observed in men. The comparison with landing techniques in indoor volleyball revealed overall differences both in men (χ²(2 = 161.4, p < 0.01 and women (χ²(2 = 84.91, p < 0.01. Beach volleyball players land more often on both feet than indoor volleyball players. Besides the softer surface in beach volleyball, and therefore resulting lower loads, these results might be another reason for fewer injuries and overuse conditions compared to indoor volleyball

  2. Mobilisation of toxic trace elements under various beach nourishments

    NARCIS (Netherlands)

    Pit, I.R.; Dekker, S.C.; Kanters, Tobias J.; Wassen, M.J.; Griffioen, J.

    2017-01-01

    To enhance protection and maintain wide beaches for recreation, beaches are replenished with sand: so-called beach nourishments. We compared four sites: two traditional beach nourishments, a mega beach nourishment and a reference without beach nourishment. Two sites contain calcareous-rich sand,

  3. Mobilisation of toxic trace elements under various beach nourishments

    NARCIS (Netherlands)

    Pit, I.R.; Dekker, S.C.; Kanters, T.J.; Wassen, M.J.; Griffioen, J.

    2017-01-01

    To enhance protection and maintain wide beaches for recreation, beaches are replenished with sand: socalled beach nourishments. We compared four sites: two traditional beach nourishments, a mega beach nourishment and a reference without beach nourishment. Two sites contain calcareous-rich sand,

  4. 78 FR 35596 - Special Local Regulation; Long Beach Regatta, Powerboat Race, Atlantic Ocean, Long Beach, NY

    Science.gov (United States)

    2013-06-13

    ... SECURITY Coast Guard 33 CFR Part 100 RIN 1625-AA08 Special Local Regulation; Long Beach Regatta, Powerboat Race, Atlantic Ocean, Long Beach, NY AGENCY: Coast Guard, DHS. ACTION: Notice of Proposed Rulemaking... Atlantic Ocean off Long Beach, NY during the Long Beach Regatta Powerboat Race scheduled for August 24-25...

  5. 33 CFR 100.736 - Annual Fort Myers Beach air show; Fort Myers Beach, FL.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Annual Fort Myers Beach air show; Fort Myers Beach, FL. 100.736 Section 100.736 Navigation and Navigable Waters COAST GUARD, DEPARTMENT... Fort Myers Beach air show; Fort Myers Beach, FL. (a)(1) Regulated Area. The regulated area is formed by...

  6. 77 FR 27120 - Safety Zone; Virginia Beach Oceanfront Air Show, Atlantic Ocean, Virginia Beach, VA

    Science.gov (United States)

    2012-05-09

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; Virginia Beach Oceanfront Air Show, Atlantic Ocean, Virginia Beach, VA AGENCY: Coast Guard, DHS. ACTION: Temporary final rule. SUMMARY: The... Beach, VA to support the Virginia Beach Oceanfront Air Show. This action is necessary to provide for the...

  7. Santa Barbara Littoral Cell CRSMP Beaches 2009

    Data.gov (United States)

    California Department of Resources — Several criteria were used for beach selection. BEACON 's Coastal Regional Sediment Management Plan included all of the most popular beaches in the two counties...

  8. Santa Barbara Littoral Cell CRSMP Beaches 2009

    Data.gov (United States)

    California Natural Resource Agency — Several criteria were used for beach selection. BEACON 's Coastal Regional Sediment Management Plan included all of the most popular beaches in the two counties...

  9. Heterotrophic bacterial populations in tropical sandy beaches

    Digital Repository Service at National Institute of Oceanography (India)

    Nair, S.; LokaBharathi, P.A.

    Distribution pattern of heterotrophic bacterial flora of three sandy beaches of the west coast of India was studied. The population in these beaches was microbiologically different. Population peaks of halotolerant and limnotolerant forms were...

  10. Lake Beach Monitoring Locations in Iowa

    Data.gov (United States)

    Iowa State University GIS Support and Research Facility — Monitored state lake beach locations in Iowa. The Watershed Monitoring & Assessment Section of the Iowa DNR takes regular water samples at these listed beaches...

  11. The origin and destruction of beach ridges

    NARCIS (Netherlands)

    Doeglas, D.J.

    1955-01-01

    During the Fall of 1945 the author measured daily the micro-topography of a beach profile at Zandvoort, the Netherlands. The daily changes and the movements of the beach ridges have been determined. Several beach ridges came into being and were destroyed during storms. The structure of the deposits

  12. Differentiating Experts' Anticipatory Skills in Beach Volleyball

    Science.gov (United States)

    Canal-Bruland, Rouwen; Mooren, Merel; Savelsbergh, Geert J. P.

    2011-01-01

    In this study, we examined how perceptual-motor expertise and watching experience contribute to anticipating the outcome of opponents' attacking actions in beach volleyball. To this end, we invited 8 expert beach volleyball players, 8 expert coaches, 8 expert referees, and 8 control participants with no beach volleyball experience to watch videos…

  13. The ecology of sandy beaches in Transkei

    African Journals Online (AJOL)

    The ecology of sandy beaches in Transkei. T. Wooldridge, A.H. Dye and A. Mclachlan. Department of Zoology, University of Port Elizabeth, Port Elizabeth. Data from an ecological survey of three sandy beaches in. Transkei and from Gulu beach on the eastern Cape coast,. South Africa, are presented. Physical parameters ...

  14. Can beaches survive climate change?

    Science.gov (United States)

    Vitousek, Sean; Barnard, Patrick L.; Limber, Patrick

    2017-04-01

    Anthropogenic climate change is driving sea level rise, leading to numerous impacts on the coastal zone, such as increased coastal flooding, beach erosion, cliff failure, saltwater intrusion in aquifers, and groundwater inundation. Many beaches around the world are currently experiencing chronic erosion as a result of gradual, present-day rates of sea level rise (about 3 mm/year) and human-driven restrictions in sand supply (e.g., harbor dredging and river damming). Accelerated sea level rise threatens to worsen coastal erosion and challenge the very existence of natural beaches throughout the world. Understanding and predicting the rates of sea level rise and coastal erosion depends on integrating data on natural systems with computer simulations. Although many computer modeling approaches are available to simulate shoreline change, few are capable of making reliable long-term predictions needed for full adaption or to enhance resilience. Recent advancements have allowed convincing decadal to centennial-scale predictions of shoreline evolution. For example, along 500 km of the Southern California coast, a new model featuring data assimilation predicts that up to 67% of beaches may completely erode by 2100 without large-scale human interventions. In spite of recent advancements, coastal evolution models must continue to improve in their theoretical framework, quantification of accuracy and uncertainty, computational efficiency, predictive capability, and integration with observed data, in order to meet the scientific and engineering challenges produced by a changing climate.

  15. Beach rock from Goa Coast

    Digital Repository Service at National Institute of Oceanography (India)

    Setty, M.G.A.P.; Wagle, B.G.

    Beach rock is a common rock type in many parts of the southern hemisphere and also some areas north of the equator. Its distribution particularly in the Indian Ocean islands and atolls and coasts of India is reviewed. The mineralogic and faunal...

  16. 75 FR 1373 - Beaches Environmental Assessment and Coastal Health Act

    Science.gov (United States)

    2010-01-11

    ... Act Grants. SUMMARY: Section 406(b) of the Clean Water Act (CWA) as amended by the Beaches...? The Beaches Environmental Assessment and Coastal Health (BEACH) Act of 2000 amends the Clean Water Act... statutory authority for BEACH Act grants is section 406(b) of the Clean Water Act, as amended by the BEACH...

  17. Recharge into a shingle beach

    Science.gov (United States)

    Keating, T.

    1984-04-01

    Traditionally, groundwater recharge in the U.K. has been calculated by the Penman method on a monthly basis, using values of potential evaporation derived from averaged meteorological data and monthly totals of rainfall. Recent work by K.W.F. Howard and J.W. Lloyd has shown that these monthly totals considerably underestimate recharge calculated over shorter time periods and they suggested that 1-day, or at worst, 10-day intervals should be used. In this paper field experiments to measure recharge into a shingle beach are reported. These experiments were made with a lysimeter over a 6-yr. period and have shown that recharge into the shingle occurs whenever significant precipitation occurs, even during the summer months. The Penman model is shown to be unrealistic for estimating recharge into such a beach and an alternative model for calculating recharge is proposed. This model is shown to yield good results.

  18. Beach profiling studies at Yarada beach, Visakhapatnam, east coast of India

    Digital Repository Service at National Institute of Oceanography (India)

    Ganesan, P.; Raju, N.S.N.

    Seasonal morphological variations and effect of oceanographic processes such as erosion or accreation along beaches are important to understand the nature of the beach and the cyclic changes occurring during different seasons. Detailed...

  19. Classification of beach response to extreme storms

    Science.gov (United States)

    Burvingt, Olivier; Masselink, Gerd; Russell, Paul; Scott, Tim

    2017-10-01

    Extreme storms are responsible for rapid changes to coastlines worldwide. During the 2013/14 winter, the west coast of Europe experienced a sequence of large, storm-induced wave events, representing the most energetic period of waves in the last 60 years. The southwest coast of England underwent significant geomorphological change during that period, but exhibited a range of spatially variable and complex morphological responses, despite being subjected to the same storm sequence. Here, we use the 2013/14 storm response along the southwest coast of England as a natural field laboratory and explain this variability in storm response through the introduction and evaluation of a new classification of how sandy and gravel beaches respond to extreme storms. Cluster analysis was conducted using an unique data set of pre- and post-storm airborne Light Detection and Ranging (LiDAR) data from 157 beach sites based on the net volumetric change (dQnet) and a novel parameter, the longshore variation index (LVI) which quantifies the alongshore morphological variability in beach response. Four main beach response types were identified: (1) fully exposed beaches that experienced large and alongshore uniform sediment losses (dQnet ≈ 100 m3·m- 1); (2) semi-exposed beaches that experienced medium alongshore uniform sediment losses (dQnet ≈ 50 m3·m- 1); (3) sheltered short beaches that experienced limited net sediment change and alongshore variability in beach response; and (4) sheltered long beaches that experienced considerable alongshore variability in beach response and large gross sediment change, but limited net sediment change. The key factors in determining the type of beach response are: exposure to the storm waves, angle of storm wave approach and the degree to which the beach is embayed. These factors are universally applicable on many exposed coastlines worldwide, so the response classification presented here is expected to be widely applicable.

  20. Beach Observations using Quadcopter Imagery

    Science.gov (United States)

    Yang, Yi-Chung; Wang, Hsing-Yu; Fang, Hui-Ming; Hsiao, Sung-Shan; Tsai, Cheng-Han

    2017-04-01

    Beaches are the places where the interaction of the land and sea takes place, and it is under the influence of many environmental factors, including meteorological and oceanic ones. To understand the evolution or changes of beaches, it may require constant monitoring. One way to monitor the beach changes is to use optical cameras. With careful placements of ground control points, land-based optical cameras, which are inexpensive compared to other remote sensing apparatuses, can be used to survey a relatively large area in a short time. For example, we have used terrestrial optical cameras incorporated with ground control points to monitor beaches. The images from the cameras were calibrated by applying the direct linear transformation, projective transformation, and Sobel edge detector to locate the shoreline. The terrestrial optical cameras can record the beach images continuous, and the shorelines can be satisfactorily identified. However, the terrestrial cameras have some limitations. First, the camera system set a sufficiently high level so that the camera can cover the whole area that is of interest; such a location may not be available. The second limitation is that objects in the image have a different resolution, depending on the distance of objects from the cameras. To overcome these limitations, the present study tested a quadcopter equipped with a down-looking camera to record video and still images of a beach. The quadcopter can be controlled to hover at one location. However, the hovering of the quadcopter can be affected by the wind, since it is not positively anchored to a structure. Although the quadcopter has a gimbal mechanism to damp out tiny shakings of the copter, it will not completely counter movements due to the wind. In our preliminary tests, we have flown the quadcopter up to 500 m high to record 10-minnte video. We then took a 10-minute average of the video data. The averaged image of the coast was blurred because of the time duration of

  1. A hybrid beach morphology model applied to a high energy sandy beach

    NARCIS (Netherlands)

    Karunarathna, Harshinie; Ranasinghe, Roshanka; Reeve, Dominic E.

    2015-01-01

    In this paper, the application of a hybrid coastal morphodynamic model to forecast inter-annual beach change is discussed through the prediction of beach change in a high energy sandy beach over a period of 5 years. The modelling approach combines a ‘reduced-physics’ formulation with a data-driven

  2. 77 FR 13519 - Safety Zone; Virginia Beach Oceanfront Air Show, Atlantic Ocean, Virginia Beach, VA

    Science.gov (United States)

    2012-03-07

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; Virginia Beach Oceanfront Air Show, Atlantic Ocean, Virginia Beach, VA AGENCY: Coast Guard, DHS. ACTION: Notice of proposed rulemaking. SUMMARY... Virginia Beach, VA. This action is necessary to provide for the safety of life on navigable waters during...

  3. Topographic changes of the beach at Valiathura, Kerala

    Digital Repository Service at National Institute of Oceanography (India)

    Murty, C.S.; Varadachari, V.V.R.

    Studies on the topography of the beach and the inshore reaches at Valiathura, near Trivandrum reveal that the beach is in a stable equilibrium and presents well defined cyclicity in accretion and erosion every year. During 1 year, the beach...

  4. Studies on Thiobacilli spp. isolated from sandy beaches of Kerala

    Digital Repository Service at National Institute of Oceanography (India)

    Gore, P.S.; Raveendran, O.; Unnithan, R.V.

    Occurrence, isolation and oxidative activity of Thiobacilli spp. from some sandy beaches of Kerala are reported. These organisms were encountered in polluted beaches and were dominant during monsoon in all the beaches...

  5. Mobilisation of toxic trace elements under various beach nourishments

    OpenAIRE

    Pit, I.R.; Dekker, S.C.; Kanters, T.J.; Wassen, M.J.; Griffioen, J.

    2017-01-01

    To enhance protection and maintain wide beaches for recreation, beaches are replenished with sand: socalled beach nourishments. We compared four sites: two traditional beach nourishments, a mega beach nourishment and a reference without beach nourishment. Two sites contain calcareous-rich sand, whereas the other two sites have calcareous-poor sand. We aimed to understand hydrogeochemical processes to indicate factors critical for the mobility of trace elements at nourishments. We therefore an...

  6. Mobilisation of toxic trace elements under various beach nourishments

    OpenAIRE

    Pit, I.R.; Dekker, S.C.; Kanters, Tobias J.; Wassen, M.J.; Griffioen, J.

    2017-01-01

    To enhance protection and maintain wide beaches for recreation, beaches are replenished with sand: so-called beach nourishments. We compared four sites: two traditional beach nourishments, a mega beach nourishment and a reference without beach nourishment. Two sites contain calcareous-rich sand, whereas the other two sites have calcareous-poor sand. We aimed to understand hydrogeochemical processes to indicate factors critical for the mobility of trace elements at nourishments. We therefore a...

  7. The ecology of sandy beaches in Natal

    African Journals Online (AJOL)

    Meiofauna are regarded as being both qualitatively and quantitatively significant on sandy beaches (McLachlan 1977c) and ecological studies of such systems should take this into account. Some work has also been done on the chemistry, pollution and meiofauna of Natal beaches (Oliff, Ber- risford, Turner & Ballard 1967).

  8. Differentiating experts’ anticipatory skills in beach volleyball

    NARCIS (Netherlands)

    Canal Bruland, R.; Mooren, M.; Savelsbergh, G.J.P.

    2011-01-01

    In this study, we examined how perceptual-motor expertise and watching experience contribute to anticipating the outcome of opponents' attacking actions in beach volleyball. To this end, we invited 8 expert beach volleyball players, 8 expert coaches, 8 expert referees, and 8 control participants

  9. Stability and safety of Anjuna beach, Goa

    Digital Repository Service at National Institute of Oceanography (India)

    Swamy, G.N.; Varadachari, V.V.R.

    Studies on the Anjuna Beach, Goa, India, from March to December, 1975, show that it is fairly stable though it undergoes seasonal changes and a series of short-term cuts and fills. The beach appears to be quite safe as the longshore currents...

  10. Shoulder Arthroscopy in the Beach Chair Position.

    Science.gov (United States)

    Higgins, John D; Frank, Rachel M; Hamamoto, Jason T; Provencher, Matthew T; Romeo, Anthony A; Verma, Nikhil N

    2017-08-01

    Arthroscopic shoulder surgery can be performed in both the beach chair and lateral decubitus positions. The beach chair position is a reliable, safe, and effective position to perform nearly all types of shoulder arthroscopic procedures. The advantages of the beach chair position include the ease of setup, limited brachial plexus stress, increased glenohumeral and subacromial visualization, anesthesia flexibility, and the ability to easily convert to an open procedure. This position is most commonly used for rotator cuff repair, subacromial decompression, and superior labrum anterior-to-posterior repair procedures. To perform arthroscopy surgery in the beach chair position successfully, meticulous care during patient positioning and setup must be taken. In this Technical Note, we describe the necessary steps to safely and efficiently prepare patients in the beach chair position for arthroscopic shoulder surgery.

  11. Dynamics of Shengjini beach (Albania)

    Science.gov (United States)

    Gashi, Ferim; Nikolli, Pal

    2015-04-01

    Dynamics of Shengjini beach (Albania) Pal Nikolli , Ferim GASHI Through archaeological and historical data, presentations of ancient topographic, cartographic materials (topographic maps obtained at different periods from 1870 to 1990), aerial photographs (2007), satellite images (2014) and direct measurements, paper defines and analyzes the position of the coastline of Shengjini beach (Lezha) from century XVI until today. The coastline of the Shengjini city (port) to Drin River estuary is oriented north-south direction and is approximately 10.5 km long. This part of the coast is sandy and sediment comes mainly from the River Drin and distributed by currents along the coast. In this paper are make provision for the position of the coastline in the future and analyzed the possibilities of human intervention in the coastal environment , etc. This work forms the basis for the issuance of necessary data required for various projections at the coastal environment Shëngjini. Results of this study will have a significant impact on state policies for integrated management of the coastal zone in the study and development of tourism. Key words: GIS, Remonte Sennsing, cartography, management of coastal zone, tourism, environment.

  12. Beach Sand Supply and Transport at Kunduchi in Tanzania and ...

    African Journals Online (AJOL)

    Abstract—Beach-head erosion of sandy beach plains in eastern Africa threatens tourism-related infrastructure and the livelihoods of beach users. The nature and drivers of physical shoreline change at Kunduchi, Dar es Salaam, and Bamburi,. Mombasa, are described with analyses of beach sand transport through the ...

  13. Patterns of species richness in sandy beaches of South America ...

    African Journals Online (AJOL)

    The middle shore is primarily occupied by cirolanids and bivalves, and hippid crabs, bivalves and amphipods dominate the lower beach. Generally, species richness increases from upper to lower beach levels. Studies carried out on exposed sandy beaches of south-central Chile (ca. 40°S) show that different beach states ...

  14. 75 FR 82382 - Beaches Environmental Assessment and Coastal Health Act

    Science.gov (United States)

    2010-12-30

    ... Act Grants. SUMMARY: Section 406(b) of the Clean Water Act (CWA) as amended by the Beaches... Clean Water Act to better protect public health at our nation's beaches through improved water quality... statutory authority for BEACH Act grants is section 406(b) of the Clean Water Act, as amended by the BEACH...

  15. Tar loads on Omani beaches

    International Nuclear Information System (INIS)

    Badawy, M.I.; Al-Harthy, F.T.

    1991-01-01

    Owing to Oman's geographic position and long coastal line, the coastal areas of Oman are particularly vulnerable to oil pollution from normal tanker operations, illegal discharges, and accidental spills as well as local sources of oil input. UNEP carried out a survey on the coasts of Oman to determine the major sources of oil pollution and concluded that the major shoreline pollution problems in Oman arose from operational discharges of oil from passing vessels traffic. The oil, because of the high sea and air temperatures in the area, was subjected to relatively high rates of evaporation and photo-oxidation and tended to arrive at the coast as heavy petroleum particulate residues (tar balls). The aim of the present study was to measure the loads of tar balls in Omani coastal areas and to identify the source of oil pollutants on beaches

  16. Indicators of microbial beach water quality: preliminary findings from Teluk Kemang beach, Port Dickson (Malaysia).

    Science.gov (United States)

    Praveena, Sarva Mangala; Chen, Kwan Soo; Ismail, Sharifah Norkhadijah Syed

    2013-11-15

    This study aims to determine the concentrations of total coliforms and Escherichia coli (E. coli) in beach water, Teluk Kemang beach. This study was also aimed to determine relationship between total coliforms, E. coli and physicochemical parameters. As perceived health symptoms among beach visitors are rarely incorporated in beach water studies, this element was also assessed in this study. A total of eight water sampling points were selected randomly along Teluk Kemang beach. Total coliforms concentrations were found between 20 and 1940 cfu/100ml. E. coli concentrations were between 0 and 90 cfu/100ml. Significant correlations were found between total coliforms and E. coli with pH, temperature and oxidation reduction potential. Skin and eyes symptoms were the highest reported though in small numbers. Microbiological water quality in Teluk Kemang public beach was generally safe for recreational activities except sampling location near with sewage outfall. Copyright © 2013 Elsevier Ltd. All rights reserved.

  17. 75 FR 65581 - Proposed Amendment and Revocation of Class E Airspace, Vero Beach, FL

    Science.gov (United States)

    2010-10-26

    ... Beach, FL AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking... surface area at Vero Beach Municipal Airport, Vero Beach, FL. The Vero Beach Non- Directional Beacon (NDB... reference to the decommissioned Vero Beach NDB at Vero Beach Municipal Airport, Vero Beach, FL. This action...

  18. 75 FR 24997 - FPL Energy Point Beach, LLC; Point Beach Nuclear Plant, Units 1 and 2; Environmental Assessment...

    Science.gov (United States)

    2010-05-06

    ... From the Federal Register Online via the Government Publishing Office NUCLEAR REGULATORY COMMISSION FPL Energy Point Beach, LLC; Point Beach Nuclear Plant, Units 1 and 2; Environmental Assessment... Energy Point Beach, LLC (the licensee), for operation of the Point Beach Nuclear Plant, Units 1 and 2...

  19. Gone to the Beach — Using GIS to infer how people value different beaches for salt water recreation.

    Science.gov (United States)

    Estimating the non-market value of beaches for saltwater recreation is complex. An individual’s preference for a beach depends on their perception of beach characteristics. When choosing one beach over another, an individual balances these personal preferences with any addi...

  20. Morphodynamics of a mesotidal rocky beach: Palmeras beach, Gorgona Island National Natural Park, Colombia

    Science.gov (United States)

    Gómez-García, A. M.; Bernal, G. R.; Osorio, A. F.; Botero, V.

    2014-10-01

    The response of a rocky beach to different possible combinations of hydrodynamic conditions (tides, waves, oceanic currents) has been little studied. In this work, the morphodynamic response to different hydrodynamic forcing is evaluated from sedimentological and geomorphological analysis in seasonal and medium term (19 years) scale in Palmeras beach, located in the southwest of Gorgona Island National Natural Park (NNP), a mesotidal rocky island on the Colombian Pacific continental shelf. Palmeras is an important nesting area of two types of marine turtles, with no anthropogenic stress. In the last years, coastal erosion has reduced the beach width, restricting the safe areas for nesting and conservation of these species. Until now, the sinks, sources, reservoirs, rates, and paths of sediments were unknown, as well as their hydrodynamic forcing. The beach seasonal variability, from October 2010 to August 2012, was analyzed based on biweekly or monthly measurements of five beach profiles distributed every 200 m along the 1.2 km of beach length. The main paths for sediment transport were defined from the modeling of wave currents with the SMC model (Coastal Modeling System), as well as the oceanic currents, simulated for the dry and wet seasons of 2011 using the ELCOM model (Estuary and Lake COmputer Model). Extreme morphologic variations over a time span of 19 years were analyzed with the Hsu and Evans beach static equilibrium parabolic model, from one wave diffraction point which dominates the general beach plan shape. The beach lost 672 m3/m during the measuring period, and erosional processes were intensified during the wet season. The beach trends responded directly to a wave mean energy flux change, resulting in an increase of up to 14 m in the width northward and loss of sediments in the beach southward. This study showed that to obtain the integral morphodynamic behavior of a rocky beach it is necessary to combine information of hydrodynamic, sedimentology

  1. Feasibility Report on Navigation Improvements for Mexico Beach Inlet, Mexico Beach, Florida.

    Science.gov (United States)

    1989-03-01

    Inlet March 1989 Mexico Beach, Florida S. PERFORMING Ono. REPORT NUNSCR 7. AtjTHOR(s) 11- CONTRACT Oft GRANT NUMB5ER(.) Halter W. Burdin Kenneth P...seemed to offer a solution to some of the problems at Mexico Beach inlet. Preliminary design was performed using the principles of good jetty design...COESAM/PDFC-89/02 FEASIBILITY REPORT ON NAVIGATION IMPROVEMENTS 6.4 FOR MEXICO BEACH INLET MEXICO BEACH, FLORIDA %1 4Y 2 1 US Army Corps AMRH18 of

  2. Beach Nourishment History (1920s to 2000)

    Data.gov (United States)

    California Department of Resources — This is a dataset of beach nourishment history for the California Coastline from the 1920s to 2000. The original data was in tabular form (an Excel spreadsheet) and...

  3. March 1933 Long Beach, USA Images

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — 5 kilometers southwest of Newport Beach. Seriously affected area: 1,200 square kilometers. Damage: $40 million. Schools were among the buildings most severely...

  4. Macrodebris and microplastics from beaches in Slovenia.

    Science.gov (United States)

    Laglbauer, Betty J L; Franco-Santos, Rita Melo; Andreu-Cazenave, Miguel; Brunelli, Lisa; Papadatou, Maria; Palatinus, Andreja; Grego, Mateja; Deprez, Tim

    2014-12-15

    The amount of marine debris in the environment is increasing worldwide, which results in an array of negative effects to biota. This study provides the first account of macrodebris on the beach and microplastics in the sediment (shoreline and infralittoral) in relation to tourism activities in Slovenia. The study assessed the quality and quantity of macrodebris and the quality, size and quantity of microplastics at six beaches, contrasting those under the influences of tourism and those that were not. Beach cleanliness was estimated using the Clean Coast Index. Tourism did not seem to have an effect on macrodebris or microplastic quantity at beaches. Over 64% of macrodebris was plastic, and microplastics were ubiquitous, which calls for classification of plastics as hazardous materials. Standard measures for marine debris assessment are needed, especially in the form of an all-encompassing debris index. Recommendations for future assessments are provided for the Adriatic region. Copyright © 2014 Elsevier Ltd. All rights reserved.

  5. Studies on beach changes at Visakhapatnam

    Digital Repository Service at National Institute of Oceanography (India)

    Chandramohan, P.; Rao, T.V.N.; Rao, D.P.

    experiences erosion during southwest monsoon and deposition during northeast monsoon and calm weather period. The annual sediment loss of about 75,000 cubic metres during the study period indicates the net erosional trend of the Visakhapatnam Beach and also...

  6. Cerebral oxygen desaturation during beach chair position

    NARCIS (Netherlands)

    Moerman, Annelies T.; de Hert, Stefan G.; Jacobs, Tom F.; de Wilde, Lieven F.; Wouters, Patrick F.

    2012-01-01

    Cases of ischaemic brain damage have been reported in relatively healthy patients undergoing shoulder surgery in the beach chair position. Unrecognised cerebral hypoperfusion may have contributed to these catastrophic events, indicating that routine anaesthesia monitoring may not suffice.

  7. Interstitial meiofauna of Namib sandy beaches

    African Journals Online (AJOL)

    1988-03-16

    Mar 16, 1988 ... no freshwater drainage occurred from the land. Meiofauna: Taxonomic composition. Eight meiofaunal taxa were identified on each beach viz. nematodes, harpacticoid copepods, mystacocarids,. 21 archiannelids, polychaetes, turbellarians, gastrotrichs and oligochaetes. The mean densities of the major.

  8. The beach ridges of India: A review

    Digital Repository Service at National Institute of Oceanography (India)

    Kunte, P.D.; Wagle, B.G.

    are distinguished into 4 genetic classes. Finally the utilization of beach ridges in the reconstruction of sea level curve, palaeo-climate and sediment budget histories has been highlighted and scope for future study is discussed...

  9. Beach Nourishment History (1920s to 2000)

    Data.gov (United States)

    California Natural Resource Agency — This is a dataset of beach nourishment history for the California Coastline from the 1920s to 2000. The original data was in tabular form (an Excel spreadsheet) and...

  10. Beach and Morphology Change Using Lidar

    Science.gov (United States)

    2016-11-01

    bathymetric data sets are synoptic , whereby sediment mass across the region can be conserved. Issues can arise using disparate beach profile surveys that...SAJ sought a method for calculating the change in beach volume density for the entire region for the post-hurricane epoch of 2006–2010. Synoptically ...using the Surface-water Modeling System (SMS) (Aquaveo 2013) software for Pinellas, Manatee/Sarasota, and south Sarasota Counties ( Table 1). Lidar data

  11. Long-term Variability of Beach Cusps

    Science.gov (United States)

    Pianca, C.; Holman, R. A.; Siegle, E.

    2016-02-01

    The most curious morphological features observed on beaches are the cusps. Due to their rhythmic spacing, beach cusps have attracted many observers and many, often contradictory, theories as to their form. Moreover, most of the research about beach cusps has focused on their formation. Few had available long time series to study such things as the variability of alongshore and cross-shore position and spacing on the cusp field, the presence, longevity and interactions between higher and lower sets of cusps, and the processes by which cusp fields extend, shrink or change length scale. The purpose of this work is to use long-term data sets of video images from two study sites, an intermediate (Duck, USA, 26 years) and a reflective beach (Massaguaçu, Brazil, 3 years), to investigate the temporal and spatial changes of cusps conditions. Time-evolving shoreline data were first extracted using an algorithm called ASLIM (Pianca et al 2015). Cusps were then identified based on the band-passed variability of time exposure image data about this shoreline as a function of elevation relative to MSL. The identified beaches cusps will be analyzed for cusp spacing, positions (upper or lower cusps), alongshore variability, merging events, percentage of cusp events, patterns of the events and time scales of variability. Finally, the relationship of these characteristics to environmental conditions (wave, tides, beach conditions) will be studied.

  12. 77 FR 5793 - Beaches Environmental Assessment and Coastal Health Act; Availability of BEACH Act Grants

    Science.gov (United States)

    2012-02-06

    ...: Notice of availability. SUMMARY: Section 406(b) of the Clean Water Act (CWA) as amended by the Beaches... Coastal Health (BEACH) Act of 2000 amends the Clean Water Act (CWA) to better protect public health at our... Clean Water Act to include the Great Lakes and marine coastal waters (including coastal estuaries) that...

  13. Transformation of Palm Beach Community College to Palm Beach State College: A Case Study

    Science.gov (United States)

    Basiratmand, Mehran

    2013-01-01

    The purpose of this single-site case study was to examine the organization and leadership change process of Palm Beach State College, a publicly funded institution in Florida, as it embarked on offering bachelor's degree programs. The study examined the organizational change process and the extent to which Palm Beach State College's organization…

  14. Beach science in the Great Lakes

    Science.gov (United States)

    Nevers, Meredith B.; Byappanahalli, Murulee N.; Edge, Thomas A.; Whitman, Richard L.

    2014-01-01

    Monitoring beach waters for human health has led to an increase and evolution of science in the Great Lakes, which includes microbiology, limnology, hydrology, meteorology, epidemiology, and metagenomics, among others. In recent years, concerns over the accuracy of water quality standards at protecting human health have led to a significant interest in understanding the risk associated with water contact in both freshwater and marine environments. Historically, surface waters have been monitored for fecal indicator bacteria (fecal coliforms, Escherichia coli, enterococci), but shortcomings of the analytical test (lengthy assay) have resulted in a re-focusing of scientific efforts to improve public health protection. Research has led to the discovery of widespread populations of fecal indicator bacteria present in natural habitats such as soils, beach sand, and stranded algae. Microbial source tracking has been used to identify the source of these bacteria and subsequently assess their impact on human health. As a result of many findings, attempts have been made to improve monitoring efficiency and efficacy with the use of empirical predictive models and molecular rapid tests. All along, beach managers have actively incorporated new findings into their monitoring programs. With the abundance of research conducted and information gained over the last 25 years, “Beach Science” has emerged, and the Great Lakes have been a focal point for much of the ground-breaking work. Here, we review the accumulated research on microbiological water quality of Great Lakes beaches and provide a historic context to the collaborative efforts that have advanced this emerging science.

  15. RIP current zones along beaches in Goa, west coast of India

    Digital Repository Service at National Institute of Oceanography (India)

    Chandramohan, P.; SanilKumar, V.; Jena, B.K.

    . Parts of stations 5 and 6 in Harmal Beach, 16 at Vagator Beach, 51-54 at Miramar Beach, 75 and 76 at Valsao Beach, 84 at Majorda Beach, and 116 at Palolem Beach are observed to have the risk of permanent rip current zones; and they are unsafe places...

  16. Bare Beach Logistics Over-the-Shore: An Outdated Concept?

    National Research Council Canada - National Science Library

    Pehrson, Christopher J

    2000-01-01

    This paper is a critical review of bare beach logistics over-the-shore (LOTS) operations. It examines the utility of the bare beach and asks if this method of LOTS is still viable for today's military...

  17. Beach sand supply and transport at Kunduchi, Tanzania, and ...

    African Journals Online (AJOL)

    related infrastructure and the livelihoods of beach plain users. The nature and drivers of physical shoreline change at Kunduchi, near Dar es Salaam, and Bamburi, near Mombasa, are described with analyses of beach sand transport through the ...

  18. Beach processes between Mulgund and Shiroda, west coast of India

    Digital Repository Service at National Institute of Oceanography (India)

    Chandramohan, P.; Nayak, B.U.; Sanilkumar, V.; Pathak, K.C.

    Study on beach processes for an year shows seasonal changes without annual net erosion. The beaches are stable and regain the maximum profiles during February to April. Distribution of longshore current direction is not uniform along the study...

  19. EPA Office of Water (OW): Beaches NHDPlus Indexed Dataset

    Data.gov (United States)

    U.S. Environmental Protection Agency — The Beaches Environmental Assessment and Coastal Health (BEACH) Program focuses on the following five areas to meet the goals of improving public health and...

  20. Climate induced changes in beach morphology and sediment dynamics, Machilipatnam

    Digital Repository Service at National Institute of Oceanography (India)

    Chauhan, O.S.

    The wave climate, littoral current patterns, monthly and seasonal longshore drift rates, beach profile changes, and sediment budget of the beach sediments were determined along Machilipatnam, Andhra Pradesh (India) for the NE, SW monsoons...

  1. Beach Advisory and Closing Online Notification (BEACON) system

    Data.gov (United States)

    U.S. Environmental Protection Agency — Beach Advisory and Closing Online Notification system (BEACON) is a colletion of state and local data reported to EPA about beach closings and advisories. BEACON is...

  2. EPA Office of Water (OW): Beaches PRAWN Attribute Data

    Data.gov (United States)

    U.S. Environmental Protection Agency — The Beaches Environmental Assessment and Coastal Health (BEACH) Program focuses on the following five areas to meet the goals of improving public health and...

  3. Through the sands of time: Beach litter trends from nine cleaned north cornish beaches.

    Science.gov (United States)

    Watts, Andrew J R; Porter, Adam; Hembrow, Neil; Sharpe, Jolyon; Galloway, Tamara S; Lewis, Ceri

    2017-09-01

    Marine litter and its accumulation on beaches is an issue of major current concern due to its significant environmental and economic impacts. Yet our understanding of spatio-temporal trends in beach litter and the drivers of these trends are currently limited by the availability of robust long term data sets. Here we present a unique data set collected systematically once a month, every month over a six year period for nine beaches along the North Coast of Cornwall, U.K. to investigate the key drivers of beach litter in the Bude, Padstow and Porthcothan areas. Overall, an average of 0.02 litter items m -2 per month were collected during the six year study, with Bude beaches (Summerleaze, Crooklets and Widemouth) the most impacted (0.03 ± 0.004 litter items m -2 per month). The amount of litter collected each month decreased by 18% and 71% respectively for Padstow (Polzeath, Trevone and Harlyn) and Bude areas over the 6 years, possibly related to the regular cleaning, however litter increased by 120% despite this monthly cleaning effort on the Padstow area beaches. Importantly, at all nine beaches the litter was dominated by small, fragmented plastic pieces and rope fibres, which account for 32% and 17% of all litter items collected, respectively. The weathered nature of these plastics indicates they have been in the marine environment for an extended period of time. So, whilst classifying the original source of these plastics is not possible, it can be concluded they are not the result of recent public littering. This data highlights both the extent of the marine litter problem and that current efforts to reduce littering by beach users will only tackle a fraction of this litter. Such information is vital for developing effective management strategies for beach and marine litter at both regional and global levels. Copyright © 2017 Elsevier Ltd. All rights reserved.

  4. Morphological change on a wadi-influenced beach: Essaouira, Morocco

    OpenAIRE

    Elmimouni, Abdelhadi; Daoudi, Lahcen; Anthony, Edward J.

    2014-01-01

    Field topographic surveys were conducted at intervals of months from 2004 to 2006 in order to highlight the sediment circulation patterns of the embayed beach of Essaouira, on the Atlantic coast of Morocco, especially under the influence of a nearby wadi, the Ksob, which is the main sediment purveyor of the beach, notably via flash floods. The profile data highlight longshore and cross-shore variations in beach morphology. Constant winds from the north rework the upper beach to form barchans ...

  5. An evaluation of beached bird monitoring approaches.

    Science.gov (United States)

    Seys, Jan; Offringa, Henk; Van Waeyenberge, Jeroen; Meire, Patrick; Kuijken, Eckhart

    2002-04-01

    Oil-pollution monitoring at sea through beach bird surveying would undoubtedly benefit from a further standardisation of methods, enhancing the efficiency of data collection. In order to come up with useful recommendations, we evaluated various approaches of beached bird collection at the Belgian coast during seven winters (1993-1999). Data received in a passive way by one major rehabilitation centre were compared to the results of targeted beach surveys carried out at different scales by trained ornithologists: 'weekly' surveys - with a mean interval of 9 days - restricted to a fixed 16.7 km beach stretch, 'monthly' surveys over the entire coastline (62.1 km) and an annual 'international' survey in Belgium over the same distance at the end of February. Data collected through Belgian rehabilitation centres concern injured, living birds collected in a non-systematical way. Oil rates derived from these centres appear to be strongly biased to oiled auks and inshore bird species, and are hence of little use in assessing the extent of oil pollution at sea. The major asset of rehabilitation centres in terms of data collection seems to be their continuous warning function for events of mass mortality. Weekly surveys on a representative and large enough section rendered reliable data on oil rates, estimates of total number of bird victims, representation of various taxonomic groups and species-richness and were most sensitive in detecting events quickly (wrecks, oil-slicks, severe winter mortality, etc.). Monthly surveys gave comparable results, although they overlooked some important beaching events and demonstrated slightly higher oil rates, probably due to the higher chance to miss short-lasting wrecks of auks. Since the monthly surveys in Belgium were carried out by a network of volunteers and were spread over a larger beach section, they should be considered as best performing. Single 'international beached bird surveys' in February gave reliable data on total victim

  6. Tar ball Monitoring Along the Kenyan Beaches.

    OpenAIRE

    Nguta, M.

    1993-01-01

    Observations and measurements of petroleum tar balls on a number of Kenyan beaches were carried out between 1979 and 1982. A large variation in the size and amount of tar deposit at the beaches was recorded. These values ranged from very small pebbles to large lumps of 30 cm in diameter, weighing up to 1.5 kg. The average tar loading during the sampling period ranged from 0-18 g/m2. Between 25-50% by weight of the tar lumps were shell fragments, sand and other nonpetroleum debris. The chemica...

  7. Daily beach profiles and littoral environmental observations off Baga, Calangute and Miramar beaches during November-December 1999

    Digital Repository Service at National Institute of Oceanography (India)

    Jayakumar, S.; Raju, N.S.N.; Gowthaman, R.; AshokKumar, K.; Anand, N.M.

    16th November-15th December 1999, are as follows: (1) daily beach profiles, (2) daily littoral environmental observations and (3) beach sediment samples for grain size distribution. Longshore sediment transport rate is estimated theoretically based...

  8. Landscape Visual Quality and Meiofauna Biodiversity on Sandy Beaches

    Science.gov (United States)

    Felix, Gabriela; Marenzi, Rosemeri C.; Polette, Marcos; Netto, Sérgio A.

    2016-10-01

    Sandy beaches are central economic assets, attracting more recreational users than other coastal ecosystems. However, urbanization and landscape modification can compromise both the functional integrity and the attractiveness of beach ecosystems. Our study aimed at investigating the relationship between sandy beach artificialization and the landscape perception by the users, and between sandy beach visual attractiveness and biodiversity. We conducted visual and biodiversity assessments of urbanized and semiurbanized sandy beaches in Brazil and Uruguay. We specifically examined meiofauna as an indicator of biodiversity. We hypothesized that urbanization of sandy beaches results in a higher number of landscape detractors that negatively affect user evaluation, and that lower-rated beach units support lower levels of biodiversity. We found that urbanized beach units were rated lower than semiurbanized units, indicating that visual quality was sensitive to human interventions. Our expectations regarding the relationship between landscape perception and biodiversity were only partially met; only few structural and functional descriptors of meiofauna assemblages differed among classes of visual quality. However, lower-rated beach units exhibited signs of lower environmental quality, indicated by higher oligochaete densities and significant differences in meiofauna structure. We conclude that managing sandy beaches needs to advance beyond assessment of aesthetic parameters to also include the structure and function of beach ecosystems. Use of such supporting tools for managing sandy beaches is particularly important in view of sea level rise and increasing coastal development.

  9. Intertidal beach slope predictions compared to field data

    NARCIS (Netherlands)

    Madsen, A.J.; Plant, N.G.

    2001-01-01

    This paper presents a test of a very simple model for predicting beach slope changes. The model assumes that these changes are a function of both the incident wave conditions and the beach slope itself. Following other studies, we hypothesized that the beach slope evolves towards an equilibrium

  10. Beachwatch : The effect of daily morphodynamics on seasonal beach evolution

    NARCIS (Netherlands)

    Quartel, S.

    2007-01-01

    Not only the storm intensity, but also the capacity of the beach to recover during fair weather conditions, influences the erosion trends of beaches. Susanne Quartel concludes this in her thesis in which the daily changes of the intertidal beach of Noordwijk aan Zee, the Netherlands, are described.

  11. Monitoring of beach enteromorpha variation with near shore video

    Science.gov (United States)

    Hu, Yali; Yu, Xinsheng; Yan, Zhijin; Yi, Weidong

    2014-07-01

    Beach is an important coastal protective barrier and tourism resources. Beach environment monitoring can help beach managers to make feasible decisions. Digital image of video monitoring technology can provide high resolution information of temporal and spatial variation of near shore in real time. The application of Video monitoring technology has been implemented in Qingdao's Shilaoren beach. The clustering method based on Gaussian mixture model is applied to extract beach enteromorpha changs for the digital images. Analysis results show that, the period of enteromorpha in Qingdao's Shilaoren beach was mainly from the early July to the mid-August in 2011, and the decline of enteromorpha is mainly associated with the rising temperature in the mid-August. Storm has significant impact on the beach enteromorpha. Tourists' activity space on the beach will decrease due to the enteromorpha covering on the beach, which affects beach tourism activities. Therefore, it's necessary to make preventive measures to avoid enteromorpha piling up on the beach, which is of great importance to the bathing beach environment and tourism development.

  12. The environmental impacts of beach sport tourism events: a case ...

    African Journals Online (AJOL)

    Durban has several established beach sport events. One of the many events is the Mr Price Pro, an internationally recognised surfi ng event, which takes place during the Vodacom Beach Africa festival, held annually during the July holiday season. This article examines the environmental impact of beach tourism events by ...

  13. Fine particle deposition at Vainguinim tourist beach, Goa, India

    Digital Repository Service at National Institute of Oceanography (India)

    Chandramohan, P.; Jayakumar, S.; SanilKumar, V.; Ilangovan, D

    . The beach sediments consist primarily shell fragments and quartz, with heavy mineral composed of ilmenits, magnetite and manganese. The black stain of the fine-grained heavy minerals deposited on the beach face reduces the aesthetics of the beach. This paper...

  14. Landscape Visual Quality and Meiofauna Biodiversity on Sandy Beaches.

    Science.gov (United States)

    Felix, Gabriela; Marenzi, Rosemeri C; Polette, Marcos; Netto, Sérgio A

    2016-10-01

    Sandy beaches are central economic assets, attracting more recreational users than other coastal ecosystems. However, urbanization and landscape modification can compromise both the functional integrity and the attractiveness of beach ecosystems. Our study aimed at investigating the relationship between sandy beach artificialization and the landscape perception by the users, and between sandy beach visual attractiveness and biodiversity. We conducted visual and biodiversity assessments of urbanized and semiurbanized sandy beaches in Brazil and Uruguay. We specifically examined meiofauna as an indicator of biodiversity. We hypothesized that urbanization of sandy beaches results in a higher number of landscape detractors that negatively affect user evaluation, and that lower-rated beach units support lower levels of biodiversity. We found that urbanized beach units were rated lower than semiurbanized units, indicating that visual quality was sensitive to human interventions. Our expectations regarding the relationship between landscape perception and biodiversity were only partially met; only few structural and functional descriptors of meiofauna assemblages differed among classes of visual quality. However, lower-rated beach units exhibited signs of lower environmental quality, indicated by higher oligochaete densities and significant differences in meiofauna structure. We conclude that managing sandy beaches needs to advance beyond assessment of aesthetic parameters to also include the structure and function of beach ecosystems. Use of such supporting tools for managing sandy beaches is particularly important in view of sea level rise and increasing coastal development.

  15. Measured spatial variability of beach erosion due to aeolian processes.

    NARCIS (Netherlands)

    de Vries, S.; Verheijen, A.H.; Hoonhout, B.M.; Vos, S.E.; Cohn, Nicholas; Ruggiero, P; Aagaard, T.; Deigaard, R.; Fuhrman, D.

    2017-01-01

    This paper shows the first results of measured spatial variability of beach erosion due to aeolian processes during the recently conducted SEDEX2 field experiment at Long Beach, Washington, U.S.A.. Beach erosion and sedimentation were derived using series of detailed terrestrial LIDAR measurements

  16. Post tsunami rebuilding of beaches and the texture of sediments

    Digital Repository Service at National Institute of Oceanography (India)

    Loveson, V.J.; Gujar, A.R.; Rajamanickam, G.V.; Chandrasekar, N.; Manickaraj, D.S.; Chandrasekaran, R.; Chaturvedi, S.K.; Mahesh, R.; Josephine, P.J.; Deepa, V.; Sudha, V.; Sunderasen, D.

    and textural statistic studies. In view of the presence tsunami in between, the beach sand composition and texture have been drastically changed, the studies on beach re-building effort has been initiated in continuing the beach sand sample collection to 2006...

  17. 75 FR 20802 - Safety Zone; New York Air Show at Jones Beach State Park, Atlantic Ocean off of Jones Beach...

    Science.gov (United States)

    2010-04-21

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; New York Air Show at Jones Beach State Park, Atlantic Ocean off of Jones Beach, Wantagh, NY AGENCY: Coast Guard, DHS. ACTION: Notice of proposed... Air Show at Jones Beach State Park in Wantagh, New York. This proposed safety zone is necessary to...

  18. Bibliography of sandy beaches and sandy beach organisms on the African continent

    CSIR Research Space (South Africa)

    Bally, R

    1986-01-01

    Full Text Available This bibliography covers the literature relating to sandy beaches on the African continent and outlying islands. The bibliography lists biological, chemical, geographical and geological references and covers shallow marine sediments, surf zones off...

  19. Measurement of biological oxygen demand sandy beaches

    African Journals Online (AJOL)

    Measurements of biological oxygen demand in a sandy beach using conventional in situ techniques are compared with laboratory measurements of interstitial oxygen changes in intact cores. Oxygen uptake as measured in the laboratory was approximately three times that measured in the field despite the fact that the.

  20. Morphological changes of the beaches of Goa

    Digital Repository Service at National Institute of Oceanography (India)

    Murty, C.S.; Veerayya, M.; Varadachari, V.V.R.

    with the onset of the southwest monsoon wind and wave conditions followed by slower rates during the subsequent period of the monsoon. This continues till August when the beaches have minimum sediment storage. The wave climates during the postmonsoon and winter...

  1. The effects of sediment used in beach nourishment: Study case El Portet de Moraira beach.

    Science.gov (United States)

    Chiva, L; Pagán, J I; López, I; Tenza-Abril, A J; Aragonés, L; Sánchez, I

    2018-02-08

    Actions taken to prevent or reduce coastal erosion often do not have the desired effect, leading to major problems instead of solving the original one. This research focuses on why a nourished beach- with borrowed sand and 0.05% of particles beach users as turbidity. This means that the colour of the water was not its characteristic blue, even with calm wave conditions. This research involved a shoreline evolution analysis and a sedimentological study of the sand from 1977 to 2017. The results show that the turbidity episodes that occurred after the beach fill of May 2017 do not coincide with major storms that affected the beach. Furthermore, prior to this beach nourishment, even after the most important storms turbidity was not so pronounced. However, when the pre-nourishment and post-nourishment sediment are compared and analysed in detail, by studying the microstructure and morphology of the sand particles, their composition and morphology were observed to be completely different. These differences are also reflected in the accelerated particle weathering test, with the post-nourishment particles showing greater dissolution of carbonates. From its mineralogy, the post-nourishment material presents a smaller proportion of quartz in its composition and a significant amount of particles (9.6%) formed by clusters of Calcium and Silicon. The separation of this mineralogical composition produced by waves explains the formation of particles measuring beach. Copyright © 2018 Elsevier B.V. All rights reserved.

  2. Trophic niche shifts driven by phytoplankton in sandy beach ecosystems

    Science.gov (United States)

    Bergamino, Leandro; Martínez, Ana; Han, Eunah; Lercari, Diego; Defeo, Omar

    2016-10-01

    Stable isotopes (δ13C and δ15N) together with chlorophyll a and densities of surf diatoms were used to analyze changes in trophic niches of species in two sandy beaches of Uruguay with contrasting morphodynamics (i.e. dissipative vs. reflective). Consumers and food sources were collected over four seasons, including sediment organic matter (SOM), suspended particulate organic matter (POM) and the surf zone diatom Asterionellopsis guyunusae. Circular statistics and a Bayesian isotope mixing model were used to quantify food web differences between beaches. Consumers changed their trophic niche between beaches in the same direction of the food web space towards higher reliance on surf diatoms in the dissipative beach. Mixing models indicated that A. guyunusae was the primary nutrition source for suspension feeders in the dissipative beach, explaining their change in dietary niche compared to the reflective beach where the proportional contribution of surf diatoms was low. The high C/N ratios in A. guyunusae indicated its high nutritional value and N content, and may help to explain the high assimilation by suspension feeders at the dissipative beach. Furthermore, density of A. guyunusae was higher in the dissipative than in the reflective beach, and cell density was positively correlated with chlorophyll a only in the dissipative beach. Therefore, surf diatoms are important drivers in the dynamics of sandy beach food webs, determining the trophic niche space and productivity. Our study provides valuable insights on shifting foraging behavior by beach fauna in response to changes in resource availability.

  3. Effect of beach management policies on recreational water quality.

    Science.gov (United States)

    Kelly, Elizabeth A; Feng, Zhixuan; Gidley, Maribeth L; Sinigalliano, Christopher D; Kumar, Naresh; Donahue, Allison G; Reniers, Adrianus J H M; Solo-Gabriele, Helena M

    2018-04-15

    When beach water monitoring programs identify poor water quality, the causes are frequently unknown. We hypothesize that management policies play an important role in the frequency of fecal indicator bacteria (FIB) exceedances (enterococci and fecal coliform) at recreational beaches. To test this hypothesis we implemented an innovative approach utilizing large amounts of monitoring data (n > 150,000 measurements per FIB) to determine associations between the frequency of contaminant exceedances and beach management practices. The large FIB database was augmented with results from a survey designed to assess management policies for 316 beaches throughout the state of Florida. The FIB and survey data were analyzed using t-tests, ANOVA, factor analysis, and linear regression. Results show that beach geomorphology (beach type) was highly associated with exceedance of regulatory standards. Low enterococci exceedances were associated with open coast beaches (n = 211) that have sparse human densities, no homeless populations, low densities of dogs and birds, bird management policies, low densities of seaweed, beach renourishment, charge access fees, employ lifeguards, without nearby marinas, and those that manage storm water. Factor analysis and a linear regression confirmed beach type as the predominant factor with secondary influences from grooming activities (including seaweed densities and beach renourishment) and beach access (including charging fees, employing lifeguards, and without nearby marinas). Our results were observable primarily because of the very large public FIB database available for analyses; similar approaches can be adopted at other beaches. The findings of this research have important policy implications because the selected beach management practices that were associated with low levels of FIB can be implemented in other parts of the US and around the world to improve recreational beach water quality. Copyright © 2018 Elsevier Ltd. All

  4. Mesoscale Morphological Change, Beach Rotation and Storm Climate Influences along a Macrotidal Embayed Beach

    Directory of Open Access Journals (Sweden)

    Tony Thomas

    2015-09-01

    Full Text Available Cross-shore profiles and environmental forcing were used to analyse morphological change of a headland bay beach: Tenby, West Wales (51.66 N; −4.71 W over a mesoscale timeframe (1996–2013. Beach profile variations were attuned with longer term shoreline change identified by previous research showing southern erosion and northern accretion within the subaerial zone and were statistically significant in both sectors although centrally there was little or no significance. Conversely a statistically significant volume loss was shown at all profile locations within the intertidal zone. There were negative phase relationships between volume changes at the beach extremities, indicative of beach rotation and results were statistically significant (p < 0.01 within both subaerial (R2 = 0.59 and intertidal (R2 = 0.70 zones. This was confirmed qualitatively by time-series analysis and further cross correlation analysis showed trend reversal time-lagged associations between sediment exchanges at either end of the beach. Wave height and storm events displayed summer/winter trends which explained longer term one directional rotation at this location. In line with previous regional research, environmental forcing suggests that imposed changes are influenced by variations in southwesterly wind regimes. Winter storms are generated by Atlantic southwesterly winds and cause a south toward north sediment exchange, while southeasterly conditions that cause a trend reversal are generally limited to the summer period when waves are less energetic. Natural and man-made embayed beaches are a common coastal feature and many experience shoreline changes, jeopardising protective and recreational beach functions. In order to facilitate effective and sustainable coastal zone management strategies, an understanding of the morphological variability of these systems is needed. Therefore, this macrotidal research dealing with rotational processes across the entire intertidal

  5. Integrated protecting plan for beach erosion. A case study in Plaka beach, E. Crete, Greece

    Science.gov (United States)

    Petrakis, Stelios; Alexandrakis, George; Kozyrakis, George; Hatziyanni, Eleni; Kampanis, Nikolaos

    2015-04-01

    Coastal zones are among the most active areas on Earth, being subjected to extreme wind / wave conditions, thus vulnerable to erosion. In Greece and Crete in particular, beach zones are extremely important for the welfare of the inhabitants, since, apart for the important biological and archaeological value of the beach zones, the socio-economic value is critical since a great number of human activities are concentrated in such areas (touristic facilities, fishing harbors etc.). The present study investigates the erosional procedures observed in Plaka beach, E. Crete, Greece, a highly touristic developed area with great archaeological interest and proposes a cost-effective solution. The factors taken into consideration for the proposed solution in reducing the erosion of the beach were the study of the climatological, geological and geomorphological regime of the area, the recent (~70 years) shifting of the coastline through the study of topographic maps, aerial photographs and satellite images, the creation of detailed bathymetric and seabed classification maps of the area and finally, a risk analysis in terms of erosional phenomena. On the basis of the above, it is concluded that the area under investigation is subjected to an erosional rate of about 1 m/10 years and the total land-loss for the past 70 years is about 4600 m2. Through the simulation of the wave regime we studied 3 possible scenarios, the "do-nothing" scenario, the construction of a detached submerged breakwater at the depth of 3 meters and, finally, the armoring of the existing beach-wall through the placement of appropriate size and material boulders, forming an artificial slope for the reducing of the wave breaking energy and a small scale nourishment plan. As a result, through the modeling of the above, the most appropriate and cost-effective solution was found to be the third, armoring of the existing coastal wall and nourishment of the beach periodically, thus the further undermining of the

  6. Geotechnical properties of the Cassino Beach mud

    Science.gov (United States)

    Dias, Cláudio R. R.; Alves, Antonio M. L.

    2009-03-01

    Knowledge of the marine soils properties, together with hydrodynamic and climatic data, plays an important role for a better understanding of the dynamic behavior of sandy and muddy coasts. This paper deals with reporting and basic interpretation of two campaigns of exploration and characterization of the mud of Cassino Beach, southern Brazil, carried out during the years of 2004 and 2005. Samples were obtained by means of cores collected at some locations offshore, and were submitted to various laboratory geotechnical tests, including determination of the physical index, grain size distribution, Atterberg limits, and shear resistance by both triaxial and shear vane tests. Results confirm the existence of a very soft soil deposit offshore Cassino Beach, highly plastic, compressible, and viscous, forming an important database for further studies.

  7. Beach sand minerals in ceramic applications

    International Nuclear Information System (INIS)

    Suresh Kumar, S.; Patra, R.N.; Mukherjee, T.K.

    2004-01-01

    Ceramics are in use since the time memorial and many new materials belonging to this segment of industry have come to existence as the human civilization progressed. Although clay and some non-clay minerals are used in the traditional ceramics, they are not compatible for advanced ceramic applications. The synthesized compounds of elements like aluminium, silicon, titanium, zirconium, rare earths etc are having ability to satisfy the requirements of such advanced high tech applications. The six heavy minerals present in abundantly available Indian beach sand minerals happen to contain these elements and find application as such or in their value added forms both in traditional and advanced ceramics. In this paper an effort has been made to describe the role of beach sand minerals being produced by Indian Rare Earths Ltd as basic raw materials for the Indian ceramic industry. (author)

  8. Virginia Beach search and rescue experiment

    Science.gov (United States)

    Rais, Houra; Mansfield, Arthur W.; Huxtable, Barton D.; Chotoo, Kancham

    2000-08-01

    In May, 1998, the NASA Search and Rescue Mission conducted a SAR crash detection test in the swampy area south and west of Virginia Beach. A number of aircraft parts were hidden in the dense foliage. The radar used was the Navy P-3 with the ERIM XLC and UHF SAR, providing fine resolution imagery with full polarimetry and an IFSAR capability. This paper reports preliminary results of this test.

  9. Great auricular neuropraxia with beach chair position

    Directory of Open Access Journals (Sweden)

    Joshi M

    2017-07-01

    Full Text Available Minal Joshi,1 Ruth Cheng,2 Hattiyangadi Kamath,1 Joel Yarmush1 1Department of Anesthesiology, New York Methodist Hospital, New York, NY, USA; 2School of Medicine, St. George’s University, Grenada, West Indies Abstract: Shoulder arthroscopy has been shown to be the procedure of choice for many diagnostic and therapeutic interventions. Neuropraxia of the great auricular nerve (GAN is an uncommon complication of shoulder surgery, with the patient in the beach chair position. We report a case of great auricular neuropraxia associated with direct compression by a horseshoe headrest, used in routine positioning for uncomplicated shoulder surgery. In this case, an arthroscopic approach was taken, under regional anesthesia with sedation in the beach chair position. The GAN, a superficial branch of the cervical plexus, is vulnerable to neuropraxia due to its superficial anatomical location. We recommend that for the procedures of the beach chair position, the auricle be protected and covered with cotton and gauze to avoid direct compression and the position of the head and neck be checked and corrected frequently. Keywords: neuropraxia, anesthesia, arthroscopy, great auricular nerve

  10. Internal wave turbulence near a Texel beach.

    Directory of Open Access Journals (Sweden)

    Hans van Haren

    Full Text Available A summer bather entering a calm sea from the beach may sense alternating warm and cold water. This can be felt when moving forward into the sea ('vertically homogeneous' and 'horizontally different', but also when standing still between one's feet and body ('vertically different'. On a calm summer-day, an array of high-precision sensors has measured fast temperature-changes up to 1 °C near a Texel-island (NL beach. The measurements show that sensed variations are in fact internal waves, fronts and turbulence, supported in part by vertical stable stratification in density (temperature. Such motions are common in the deep ocean, but generally not in shallow seas where turbulent mixing is expected strong enough to homogenize. The internal beach-waves have amplitudes ten-times larger than those of the small surface wind waves. Quantifying their turbulent mixing gives diffusivity estimates of 10(-4-10(-3 m(2 s(-1, which are larger than found in open-ocean but smaller than wave breaking above deep sloping topography.

  11. Significance of beach geomorphology on fecal indicator bacteria levels.

    Science.gov (United States)

    Donahue, Allison; Feng, Zhixuan; Kelly, Elizabeth; Reniers, Ad; Solo-Gabriele, Helena M

    2017-08-15

    Large databases of fecal indicator bacteria (FIB) measurements are available for coastal waters. With the assistance of satellite imagery, we illustrated the power of assessing data for many sites by evaluating beach features such as geomorphology, distance from rivers and canals, presence of piers and causeways, and degree of urbanization coupled with the enterococci FIB database for the state of Florida. We found that beach geomorphology was the primary characteristic associated with enterococci levels that exceeded regulatory guidelines. Beaches in close proximity to marshes or within bays had higher enterococci exceedances in comparison to open coast beaches. For open coast beaches, greater enterococci exceedances were associated with nearby rivers and higher levels of urbanization. Piers and causeways had a minimal contribution, as their effect was often overwhelmed by beach geomorphology. Results can be used to understand the potential causes of elevated enterococci levels and to promote public health. Copyright © 2017 Elsevier Ltd. All rights reserved.

  12. Recreational impacts on Colorado River beaches in Glen Canyon, Arizona

    Science.gov (United States)

    Carothers, Steven W.; Johnson, Robert A.; Dolan, Robert

    1984-07-01

    Recreational impact was measured on eight beaches in Glen Canyon National Recreation Area and 15 beaches in Grand Canyon National Park using permanently located transects and plots. Recreational impact indices included densities of human trash and charcoal and a measure of sand discoloration due to charcoal. Significant increases in the indices occurred on several Glen Canyon beaches over a seven-month period. Sand discoloration became significantly higher over all Glen Canyon beaches during the same time period. All indices were significantly higher in Glen Canyon than on similar Grand Canyon beaches. These differences are probably due to differences in: (a) level of impacts tolerated by the respective management regimes and, (b) in the number of user days among the two National Park Service administrative units. Management alternatives are presented for reversing the present trends of recreational impact on Glen Canyon beaches.

  13. Shifts in the microbial community composition of Gulf Coast beaches following beach oiling.

    Directory of Open Access Journals (Sweden)

    Ryan J Newton

    Full Text Available Microorganisms associated with coastal sands serve as a natural biofilter, providing essential nutrient recycling in nearshore environments and acting to maintain coastal ecosystem health. Anthropogenic stressors often impact these ecosystems, but little is known about whether these disturbances can be identified through microbial community change. The blowout of the Macondo Prospect reservoir on April 20, 2010, which released oil hydrocarbons into the Gulf of Mexico, presented an opportunity to examine whether microbial community composition might provide a sensitive measure of ecosystem disturbance. Samples were collected on four occasions, beginning in mid-June, during initial beach oiling, until mid-November from surface sand and surf zone waters at seven beaches stretching from Bay St. Louis, MS to St. George Island, FL USA. Oil hydrocarbon measurements and NOAA shoreline assessments indicated little to no impact on the two most eastern beaches (controls. Sequence comparisons of bacterial ribosomal RNA gene hypervariable regions isolated from beach sands located to the east and west of Mobile Bay in Alabama demonstrated that regional drivers account for markedly different bacterial communities. Individual beaches had unique community signatures that persisted over time and exhibited spatial relationships, where community similarity decreased as horizontal distance between samples increased from one to hundreds of meters. In contrast, sequence analyses detected larger temporal and less spatial variation among the water samples. Superimposed upon these beach community distance and time relationships, was increased variability in bacterial community composition from oil hydrocarbon contaminated sands. The increased variability was observed among the core, resident, and transient community members, indicating the occurrence of community-wide impacts rather than solely an overprinting of oil hydrocarbon-degrading bacteria onto otherwise

  14. Chenang Beach and its Crowding Capacity: A Malaysian Perspective

    Directory of Open Access Journals (Sweden)

    Mohamad Diana

    2014-01-01

    Full Text Available This working paper focuses in enjoyment factors, specifically: number of beach users, perceived maximum number of beach users accepted, perceived maximum number of beach users that affects the tourism experience and perceived maximum number of beach users that affects the beach quality. At a deeper extent, the evaluation is categorized by number of visitation, visitation motivations, and Chenang Island’s push and pull factors. Relationships between variables were assessed using a two-phase evaluation framework where interestingly, only one demographic factor works with all the studied independent variables. It is also learned that the density of an area number of people seen is considered as a n accepted crowding factor, as opposed to this working paper scope experienced crowding . A unique relationship was observed for crowding level, and visitation satisfaction level and overall evaluation of Chenang beach quality. This working paper further supports the previous literature on the significance of beach carrying capacity management and it is learned that the idea of crowding standard is interlinks with ‘gender, ‘time spend’ and ‘number of boaters’. From findings, this working paper envisages the preferences polar exchange where this should be of interest to tourism-related personnel. It is within this working paper interest to highlight the pressing need in brandishing the image of Chenang Beach. This is to ensure that Chenang Beach, as a field, is maintaining its importance and popularity.

  15. Can Beach Cleans Do More Than Clean-Up Litter? Comparing Beach Cleans to Other Coastal Activities.

    Science.gov (United States)

    Wyles, Kayleigh J; Pahl, Sabine; Holland, Matthew; Thompson, Richard C

    2017-06-01

    Coastal visits not only provide psychological benefits but can also contribute to the accumulation of rubbish. Volunteer beach cleans help address this issue, but may only have limited, local impact. Consequently, it is important to study any broader benefits associated with beach cleans. This article examines the well-being and educational value of beach cleans, as well as their impacts on individuals' behavioral intentions. We conducted an experimental study that allocated students ( n = 90) to a beach cleaning, rock pooling, or walking activity. All three coastal activities were associated with positive mood and pro-environmental intentions. Beach cleaning and rock pooling were associated with higher marine awareness. The unique impacts of beach cleaning were that they were rated as most meaningful but linked to lower restorativeness ratings of the environment compared with the other activities. This research highlights the interplay between environment and activities, raising questions for future research on the complexities of person-environment interactions.

  16. 75 FR 23588 - Drawbridge Operation Regulation; Atlantic Intracoastal Waterway, Riviera Beach, FL

    Science.gov (United States)

    2010-05-04

    ..., Riviera Beach, FL AGENCY: Coast Guard, DHS. ACTION: Notice of temporary deviation from regulations..., at Riviera Beach, Palm Beach County, Florida. The deviation is necessary to allow timely bridge...

  17. Predicting Fecal Indicator Bacteria Concentrations in the South Fork Broad River Watershed Using Virtual Beach

    Science.gov (United States)

    Virtual Beach (VB) is a decision support tool that constructs site-specific statistical models to predict fecal indicator bacteria (FIB) at recreational beaches. Although primarily designed for making decisions regarding beach closures or issuance of swimming advisories based on...

  18. Wave refraction in relation to beach stability along the coast from Cape Ramas to Karwar

    Digital Repository Service at National Institute of Oceanography (India)

    Gouveia, A.D.; Joseph, P.S.; Kurup, P.G.

    Results of wave refraction and beach profile studies are presented for a stretch of 35 km shore line comprising of Loliem Beach, Karwar, Karnataka, India which is separated by rock promontories from comparatively stable beaches on either side of it...

  19. Beach changes at Visakhapatnam due to the cyclone of May 1979

    Digital Repository Service at National Institute of Oceanography (India)

    Chandramohan, P.; Rao, B.P.

    The impact of the May, 1979 cyclonic storm on Visakhapatnam beach, India and the observations made on beach profiles, waves and littoral currents prior to and during the storm are discussed. In general, at Visakhapatnam beach accretion trend starts...

  20. 75 FR 70351 - Termination of Environmental Review Process Cities of Chesapeake and Virginia Beach, VA

    Science.gov (United States)

    2010-11-17

    ... Virginia Beach, VA AGENCY: Federal Highway Administration (FHWA), DOT. ACTION: Termination of environmental... the Cities of Chesapeake and Virginia Beach, Virginia, is terminated. FOR FURTHER INFORMATION CONTACT...

  1. Laminae and grain-size measures in beach sediments, east coast beaches, India

    Digital Repository Service at National Institute of Oceanography (India)

    Chauhan, O.S.

    in micro-layer structure of beach sediments at berm/backshore, foreshore and offshore regions. The sediments from the 0.5, 1.0, 1.5 and 2.0-cm layers as well as from the full core show effects of mixing of the individual micro-layers. The degree...

  2. Evaluation of potential sources and transport mechanisms of fecal indicator bacteria to beach water, Murphy Park Beach, Door County, Wisconsin

    Science.gov (United States)

    Juckem, Paul F.; Corsi, Steven R.; McDermott, Colleen; Kleinheinz, Gregory; Fogarty, Lisa R.; Haack, Sheridan K.; Johnson, Heather E.

    2013-01-01

    Fecal Indicator Bacteria (FIB) concentrations in beach water have been used for many years as a criterion for closing beaches due to potential health concerns. Yet, current understanding of sources and transport mechanisms that drive FIB occurrence remains insufficient for accurate prediction of closures at many beaches. Murphy Park Beach, a relatively pristine beach on Green Bay in Door County, Wis., was selected for a study to evaluate FIB sources and transport mechanisms. Although the relatively pristine nature of the beach yielded no detection of pathogenic bacterial genes and relatively low FIB concentrations during the study period compared with other Great Lakes Beaches, its selection limited the number of confounding FIB sources and associated transport mechanisms. The primary sources of FIB appear to be internal to the beach rather than external sources such as rivers, storm sewer outfalls, and industrial discharges. Three potential FIB sources were identified: sand, swash-zone groundwater, and Cladophora mats. Modest correlations between FIB concentrations in these potential source reservoirs and FIB concentrations at the beach from the same day illustrate the importance of understanding transport mechanisms between FIB sources and the water column. One likely mechanism for transport and dispersion of FIB from sand and Cladophora sources appears to be agitation of Cladophora mats and erosion of beach sand due to storm activity, as inferred from storm indicators including turbidity, wave height, current speed, wind speed, sky visibility, 24-hour precipitation, and suspended particulate concentration. FIB concentrations in beach water had a statistically significant relation (p-value ‹0.05) with the magnitude of these storm indicators. In addition, transport of FIB in swash-zone groundwater into beach water appears to be driven by groundwater recharge associated with multiday precipitation and corresponding increased swash-zone groundwater discharge at

  3. At Long Beach, Success Is Measured by Degrees

    Science.gov (United States)

    Fain, Paul

    2009-01-01

    The California State University campus at Long Beach graduated 8,720 students last month. Each one got the opportunity to walk the stage, and F. King Alexander, the university's president, shook every hand. California State at Long Beach has made graduating a greater number of its 38,000 students its top priority. The slogan "Graduation…

  4. Breaking waves on a dynamic Hele-Shaw beach

    NARCIS (Netherlands)

    Bokhove, Onno; van der Horn, Bram; van der Horn, Avraham/Bram; van der Meer, Roger M.; Zweers, Wout; Thornton, Anthony Richard

    We report the formation of quasi-steady beaches and dunes via breaking waves in our tabletop ‘Hele-Shaw’ beach experiment. Breaking waves are generated by a wave maker, and zeolite particles act as sand. The tank is narrow, just over one-particle diameter wide, creating a quasi-2D set-up. Classical

  5. Interstitial meiofauna of Namib sandy beaches | McGwynne | African ...

    African Journals Online (AJOL)

    Interstitial meiofauna were sampled across the intertidal zone and into the sublittoral region on two exposed sandy beaches on the Namibian coast, Langstrand and Cape Cross. A transverse barrip beach configuration at Langstrand allowed a comparison between the distribution and abundance patterns at the horn and ...

  6. 33 CFR 110.74b - Apollo Beach, Fla.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Apollo Beach, Fla. 110.74b Section 110.74b Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY ANCHORAGES ANCHORAGE REGULATIONS Special Anchorage Areas § 110.74b Apollo Beach, Fla. Beginning at a point...

  7. Automated mapping of the intertidal beach from video images

    NARCIS (Netherlands)

    Uunk, L.; Uunk, L.; Wijnberg, Kathelijne Mariken; Morelissen, R.; Morelissen, R.

    2010-01-01

    This paper presents a fully automated procedure to derive the intertidal beach bathymetry on a daily basis from video images of low-sloping beaches that are characterised by the intermittent emergence of intertidal bars. Bathymetry data are obtained by automated and repeated mapping of shorelines

  8. Sand transport in urbanized beaches - models and reality

    International Nuclear Information System (INIS)

    Pineiro, G.; Norbis, W.; Panario, D.

    2012-01-01

    The general objective is to quantify the wind transport of sand in the urbanized beaches. The specific objectives include testing and calibration of the wind velocity as well as the classification of the beaches according to the magnitude and the direction of sand transport

  9. Dynamics of the Pebble Beach in the Protected Water Area

    Directory of Open Access Journals (Sweden)

    Nikolay K. Makarov

    2013-01-01

    Full Text Available Mathematical modeling of the dynamics of the pebble beach in the area of artificial cape, performed in programs designed with the participation of the author, and included a calculation of the diffraction, refraction, transformation, and waves breaking, sediment transport and dynamics of the beach. By results of modeling the optimum configuration of protective constructions is offered.

  10. Seasonal impact on beach morphology and the status of heavy ...

    Indian Academy of Sciences (India)

    The aim of the present research was to investigate the seasonal impact on nearshore beach dynamics and the status of heavy mineral distribution along central Tamil Nadu coast, India. Beach profile measurements were made in 10 profiling sites between Thirukadaiyur and Velankanni on monthly and seasonal basis from ...

  11. Influence of Tourist Pressure on Beach Litter and Microbial Quality ...

    African Journals Online (AJOL)

    The study aims at determining how the degree of human pressure at the La and Korle Beach resorts in Accra, Ghana, which serve different social communities, contributes to beach degradation. A weekly collection of fresh ... The implications for leisure activity like swimming at both sites has minimal health risks since the ...

  12. Bodies that Matter: Performing White Possession on the Beach

    Science.gov (United States)

    Moreton-Robinson, Aileen

    2011-01-01

    Beaches remain important places within indigenous coastal peoples' territories, although the silence about our ownership is deafening. Many authors have argued that within Australian popular culture the beach is a key site where racialized and gendered transgressions, fantasies, and desires are played out, but none have elucidated how these…

  13. Observations of shoreline-sandbar coupling on an embayed beach

    NARCIS (Netherlands)

    van de Lageweg, W.I.; Bryan, K.R.; Coco, G.; Ruessink, B.G.

    2013-01-01

    We analyse a seven-year dataset (1999–2005) of shoreline and sandbar variations derived from video observations at the embayed Tairua Beach, New Zealand, to explore sandbar–shoreline coupling and to determine how this coupling is related to alongshore-averaged sandbar–shoreline separation and beach

  14. Modelling wind forced bedforms on a sandy beach

    NARCIS (Netherlands)

    de Vries, S.; Van Thiel de Vries, J.; Ruessink, B.G.

    2013-01-01

    This paper aims to conceptually simulate observed spatial and temporal variability in aeolian sediment transport rates, erosion and deposition on a beach. Traditional strategies of modeling aeolian sediment transport rates do not account for supply limitations that are common on natural beaches. A

  15. Seasonal impact on beach morphology and the status of heavy ...

    Indian Academy of Sciences (India)

    inant transport rate in northern direction whereas, the rest of the beaches are in southern direction. The seasonal action of wind ... temporal variation of the foreshore environment. Many researchers ... Keywords. Sediment transport; placer deposits; heavy minerals; beach profile; morphodynamic state; India. J. Earth Syst.

  16. Revisiting Hele-Shaw dynamics to better understand beach evolution

    NARCIS (Netherlands)

    Bokhove, Onno; van der Horn, Avraham/Bram; van der Horn, A.J.; van der Meer, Roger M.; Gagarina, Elena; Zweers, W.; Thornton, Anthony Richard

    Wave action, particularly during storms, drives the evo lution of beaches. Beach evolution by non-linear break ing waves is poorly understood due to its three-dimensional character, the range of scales involved, and our limited understanding of particle-wave interactions. We show how a novel,

  17. Monmouth Beach, New Jersey: Beach-Fill "Hot Spot" Erosion Evaluation. Report 2. Functional Design of Shore-Protection Alternatives for Beach-Fill Longevity

    National Research Council Canada - National Science Library

    Smith, S

    1999-01-01

    The U.S. Army Engineer District, New York, is constructing Section I-Sea Bright to Ocean Township, New Jersey, of the Atlantic Coast of New Jersey - Sandy Hook to Barnegat Inlet Beach Erosion Control Project...

  18. Gleaning and Dreaming on Car Park Beach

    Directory of Open Access Journals (Sweden)

    Jo Croft

    2018-04-01

    Full Text Available This article explores beachcombing and gleaning as practices that combine mobility with daydreaming and which allow us to experience our environment with the perception of ‘tactile nearness’ (Benjamin. Through eco-poetics shaped by ‘inconceivable analogies and connections’ (Benjamin, the author re-imagines a neglected space used as a short-cut on the way to work—the Liverpool Adelphi car park in Liverpool—as “Car Park Beach”. Inspired by the situationists’ slogan ‘Sous les pavés, la plage’, the author argues that Car Park Beach opens up imaginative possibilities for a different form of ecological encounter with our own precarity, one ushered in by a ‘close-up’ awareness of how waste transforms our world. Car Park Beach is a site that the author associates with the drift-like, distracted movements of both people and matter, and this article therefore attempts to deploy an equivalent method of analysis. Drawing on her own practice of gleaning photos and objects on the way to work, the author places a vocabulary of flotsam and jetsam at the axis of her discussion. Allusive, often layered, connections are followed between a diverse range of sources including beachcombing guides, literary memoirs, documentary films, eco-criticism, and auto-ethnography.

  19. Application of GIS in Beach Placer Exploration

    International Nuclear Information System (INIS)

    Babu, M.N.

    2016-01-01

    Application of Geographic Information System (GIS) in beach placer exploration combines the activities of data collection, organisation, visualisation, query, analysis and prediction. GIS has the potential to enhance the capability for creative data analysis, modelling and interpretation. Exploration software and GIS are essential tools for geoscientists searching for mineral deposits. GIS technology has come a long way in the past fifteen years, especially in data handling, analysis, visualization etc. Modern technology and solutions are now evolving to allow geoscientists to share data easily between mapping platforms and enterprise level GIS environments. In beach placer exploration programme, data handling and processing are the main challenging tasks due to generation and processing of large volume of field and laboratory data of the areas under investigation. Though there are limitations in visualising map data as a single map on a screen, due to its non-proportionate lengths and widths, a GIS can very well handle all these varied datasets to demarcate highly potential zones within a narrow coastal strip. Generally these datasets contain information from thousands of drillholes about their location co-ordinates, depth, height, description and thickness of lithounits, water table level, radioactivity and other pertinent subsurface properties. Field data collection can be efficiently done using a hand held global positioning system (GPS) installed with mobile-GIS application and data handling software

  20. Beach safety education for primary school children.

    Science.gov (United States)

    Wilks, Jeff; Kanasa, Harry; Pendergast, Donna; Clark, Ken

    2017-09-01

    Childhood drowning remains a serious public health problem worldwide. The Australian Water Safety Council has set as one of its highest priorities the reduction of drowning deaths in children aged 0-14 years. However, concerns have recently been raised that many students completing primary school still lack the ability to recognize potential aquatic risks, cope with emergencies or assist someone else in danger. In this study, 107 primary school children aged 11-12 completed a one day training programme led by surf lifesaving instructors. Pre, post and eight week follow-up measures showed statistically significant improvements in recognition of the red 'beach closed' flag, aquatic safety signs, how to identify a rip current and choosing the safest place to swim at a beach that included a rip current in the picture. Following training students were more willing to provide first aid assistance to family members and friends in an emergency situation. Findings reinforce the value of school-based training that provides a general foundation for aquatic safety, with the caveat that current programmes must be evaluated to ensure their content has a robust prevention focus.

  1. 75 FR 16201 - FPL Energy Point Beach, LLC; Point Beach Nuclear Plant, Units 1 and 2; Exemption

    Science.gov (United States)

    2010-03-31

    ... From the Federal Register Online via the Government Publishing Office ] NUCLEAR REGULATORY COMMISSION FPL Energy Point Beach, LLC; Point Beach Nuclear Plant, Units 1 and 2; Exemption 1.0 Background... letter from R. W. Borchardt (NRC) to M. S. Fertel (Nuclear Energy Institute) dated June 4, 2009. The...

  2. 75 FR 14206 - FPL Energy Point Beach, LLC; Point Beach Nuclear Plant, Units 1 and 2; Environmental Assessment...

    Science.gov (United States)

    2010-03-24

    ... From the Federal Register Online via the Government Publishing Office NUCLEAR REGULATORY COMMISSION [Docket Nos. 50-266 And 50-301; NRC-2010-0123 FPL Energy Point Beach, LLC; Point Beach Nuclear Plant, Units 1 and 2; Environmental Assessment and Finding of No Significant Impact The U.S. Nuclear...

  3. 75 FR 79293 - Amendment and Revocation of Class E Airspace; Vero Beach, FL

    Science.gov (United States)

    2010-12-20

    ... Federal Aviation Administration 14 CFR Part 71 Amendment and Revocation of Class E Airspace; Vero Beach... removes Class E airspace designated as an extension to Class D surface area at Vero Beach Municipal Airport, Vero Beach, FL. The Vero Beach Non-Directional Beacon (NDB) has been decommissioned and new...

  4. 77 FR 5184 - Drawbridge Operation Regulation; Atlantic Intracoastal Waterway, Wrightsville Beach, NC

    Science.gov (United States)

    2012-02-02

    ..., Wrightsville Beach, NC AGENCY: Coast Guard, DHS. ACTION: Notice of temporary deviation from regulations... Wrightsville Beach, NC. This deviation is necessary to accommodate the Quintiles Wrightsville Beach Full and...) 366-9826. SUPPLEMENTARY INFORMATION: The Quintiles Wrightsville Beach Full and Half Marathon committee...

  5. 78 FR 669 - Drawbridge Operation Regulation; Atlantic Intracoastal Waterway, Wrightsville Beach, NC

    Science.gov (United States)

    2013-01-04

    ..., Wrightsville Beach, NC AGENCY: Coast Guard, DHS. ACTION: Notice of temporary deviation from regulations... Wrightsville Beach, NC. This deviation is necessary to accommodate the 2013 Quintiles Wrightsville Beach Full..., telephone 202-366-9826. SUPPLEMENTARY INFORMATION: The Quintiles Wrightsville Beach Full and Half Marathon...

  6. 76 FR 1359 - Drawbridge Operation Regulation; Atlantic Intracoastal Waterway, Wrightsville Beach, NC

    Science.gov (United States)

    2011-01-10

    ..., Wrightsville Beach, NC AGENCY: Coast Guard, DHS. ACTION: Notice of Temporary Deviation from regulations... Wrightsville Beach, NC. The deviation is necessary because participants in the 2011 Wrightsville Beach... remain in the closed position for two hours to accommodate the 2011 Wrightsville Beach/Quintiles Marathon...

  7. Governance in a beach seine fishery : a case study from Lake Victoria, Tanzania

    NARCIS (Netherlands)

    Medard, M.; Dijk, van J.W.M.; Hebinck, P.; Geheb, K.

    2016-01-01

    Beach seine gear is one of the prominent fishing gears in Nile Perch fishery. Before Nile Perch was introduced to the lake, beach seines the species targeted with beach seine were Tilapia, Bagrus, Haplochromis, Protopterus and Labeo. In 1994, beach seines were banned in Tanzania and by 2004, this

  8. 78 FR 2916 - Special Local Regulation; West Palm Beach Triathlon Championship, Intracoastal Waterway, West...

    Science.gov (United States)

    2013-01-15

    ... 1625-AA08 Special Local Regulation; West Palm Beach Triathlon Championship, Intracoastal Waterway, West Palm Beach, FL AGENCY: Coast Guard, DHS. ACTION: Notice of proposed rulemaking. SUMMARY: The Coast... Palm Beach, Florida, during the West Palm Beach Triathlon Championship, on Saturday, June 1, 2013...

  9. Brazilian sandy beaches: characteristics, ecosystem services, impacts, knowledge and priorities

    Directory of Open Access Journals (Sweden)

    Antonia Cecília Zacagnini Amaral

    Full Text Available ABSTRACT Sandy beaches constitute a key ecosystem and provide socioeconomic goods and services, thereby playing an important role in the maintenance of human populations and in biodiversity conservation. Despite the ecological and social importance of these ecosytems, Brazilian sandy beaches are significantly impacted by human interference, chemical and organic pollution and tourism, as well as global climate change. These factors drive the need to better understand the environmental change and its consequences for biota. To promote the implementation of integrated studies to detect the effects of regional and global environmental change on beaches and on other benthic habitats of the Brazilian coast, Brazilian marine researchers have established The Coastal Benthic Habitats Monitoring Network (ReBentos. In order to provide input for sample planning by ReBentos, we have conducted an intensive review of the studies conducted on Brazilian beaches and summarized the current knowledge about this environment. In this paper, we present the results of this review and describe the physical, biological and socioeconomics features of Brazilian beaches. We have used these results, our personal experience and worldwide literature to identify research projects that should be prioritized in the assessment of regional and global change on Brazilian sandy beaches. We trust that this paper will provide insights for future studies and represent a significant step towards the conservation of Brazilian beaches and their biodiversity.

  10. Synthesis study of an erosion hot spot, Ocean Beach, California

    Science.gov (United States)

    Barnard, Patrick L.; Hansen, Jeff E.; Erikson, Li H.

    2012-01-01

    A synthesis of multiple coastal morphodynamic research efforts is presented to identify the processes responsible for persistent erosion along a 1-km segment of 7-km-long Ocean Beach in San Francisco, California. The beach is situated adjacent to a major tidal inlet and in the shadow of the ebb-tidal delta at the mouth of San Francisco Bay. Ocean Beach is exposed to a high-energy wave climate and significant alongshore variability in forcing introduced by varying nearshore bathymetry, tidal forcing, and beach morphology (e.g., beach variably backed by seawall, dunes, and bluffs). In addition, significant regional anthropogenic factors have influenced sediment supply and tidal current strength. A variety of techniques were employed to investigate the erosion at Ocean Beach, including historical shoreline and bathymetric analysis, monthly beach topographic surveys, nearshore and regional bathymetric surveys, beach and nearshore grain size analysis, two surf-zone hydrodynamic experiments, four sets of nearshore wave and current experiments, and several numerical modeling approaches. Here, we synthesize the results of 7 years of data collection to lay out the causes of persistent erosion, demonstrating the effectiveness of integrating an array of data sets covering a huge range of spatial scales. The key findings are as follows: anthropogenic influences have reduced sediment supply from San Francisco Bay, leading to pervasive contraction (i.e., both volume and area loss) of the ebb-tidal delta, which in turn reduced the regional grain size and modified wave focusing patterns along Ocean Beach, altering nearshore circulation and sediment transport patterns. In addition, scour associated with an exposed sewage outfall pipe causes a local depression in wave heights, significantly modifying nearshore circulation patterns that have been shown through modeling to be key drivers of persistent erosion in that area.

  11. Geophysical features influence the accumulation of beach debris on Caribbean islands.

    Science.gov (United States)

    Schmuck, Alexandra M; Lavers, Jennifer L; Stuckenbrock, Silke; Sharp, Paul B; Bond, Alexander L

    2017-08-15

    Anthropogenic beach debris was recorded during beach surveys of 24 Caribbean islands during April 2014-April 2016. Beach debris was classified according to material type (e.g., polystyrene) and item use (e.g., fishing). Geophysical features (substrate type, beach direction, and human accessibility) of sample sites were recorded in order to investigate their relationship with debris density. Results suggest the density of macro debris (items >5mm) is highest on uninhabited, sandy beaches facing a leeward direction. Higher debris quantities on inaccessible beaches may be due to less frequent beach clean ups. Frequently accessed beaches exhibited lower macro, but higher micro debris (items 1-5mm) densities, possibly due to removal of macro debris during frequent beach clean ups. This suggests that while geophysical features have some influence on anthropogenic debris densities, high debris densities are occurring on all islands within the Caribbean region regardless of substrate, beach direction, or human accessibility. Copyright © 2017 Elsevier Ltd. All rights reserved.

  12. Applications of Dredging and Beach Fills in GenCade

    Science.gov (United States)

    2016-06-01

    the nourished beach and the natural beach berm height are identical. GenCade requires the modeler to input a beach fill as an added berm width...step in the simulation. A graphic of the volume of each shoal through time can be viewed by going to Display->Plot Wizard and selecting GenCade Inlet...Station. Kraus, N. C. 2002. Reservoir model for calculating natural sand bypassing and change in volume of ebb-tidal shoals, part I: Description. ERDC

  13. Cranial nerves neuropraxia after shoulder arthroscopy in beach chair position.

    Science.gov (United States)

    Cogan, A; Boyer, P; Soubeyrand, M; Hamida, F Ben; Vannier, J-L; Massin, P

    2011-05-01

    We report a case of neuropraxia of the 9th, 10th and 12th cranial nerve pairs after arthroscopic rotator cuff repair in the beach chair position. The elements in the medical file seem to exclude an intracranial cause of the lesions and support a mechanical, extracranial cause due to intubation and/or the beach chair position. This clinical case report shows the neurological risks of the beach chair position during arthroscopic shoulder surgery and presents the essential safety measures to prevent these risks. Copyright © 2011 Elsevier Masson SAS. All rights reserved.

  14. Brazilian sandy beach macrofauna production: a review

    Directory of Open Access Journals (Sweden)

    Marcelo Petracco

    2012-12-01

    Full Text Available The state of the art of the studies on the production of Brazilian sandy beach macrofauna was analyzed on the basis of the data available in the literature. For this purpose, the representativeness of the production dataset was examined by latitudinal distribution, degree of exposure and morphodynamic state of beaches, taxonomic groups, and methods employed. A descriptive analysis was, further, made to investigate the trends in production of the more representative taxonomic groups and species of sandy beach macrofauna. A total of 69 macrofauna annual production estimates were obtained for 38 populations from 25 studies carried out between 22º56'S and 32º20'S. Production estimates were restricted to populations on beaches located on the southern and southeastern Brazilian coast. Most of the populations in the dataset inhabit exposed dissipative sandy beaches and are mainly represented by mollusks and crustaceans, with a smaller number of polychaetes. The trends in production among taxonomic groups follow a similar pattern to that observed on beaches throughout the world, with high values for bivalves and decapods. The high turnover rate (P/B ratio of the latter was due to the presence of several populations of the mole crab Emerita brasiliensis, which can attain high values of productivity, in the dataset. Most of the studies focus on the comparison of production and, especially, of P/B ratio according to life history traits in populations of the same species/taxonomic group. Despite the importance of life history-production studies, other approaches, such as the effect of man-induce disturbances on the macrofauna, should be undertaken in these threatened environments.O estado da arte dos estudos de produção da macrofauna de praias arenosas brasileiras foi analisado a partir de informações disponíveis na literatura. Para essa finalidade, a representatividade dos dados de produção foi examinada de acordo com a distribuição latitudinal

  15. Morphological changes, beach inundation and overwash caused by an extreme storm on a low-lying embayed beach bounded by a dune system (NW Mediterranean)

    Science.gov (United States)

    Durán, Ruth; Guillén, Jorge; Ruiz, Antonio; Jiménez, José A.; Sagristà, Enric

    2016-12-01

    The geomorphological evolution of a low-lying, micro-tidal sandy beach in the western Mediterranean, Pals beach, was characterized using airborne Light Detection and Ranging (LiDAR) data. Data were collected in prior to and six months after the impact of an extreme storm with a return period of approx. 50 years, with the aim of characterizing the beach's response to the storm. The use of repeated high-resolution topographic data to quantify beach geomorphic changes has allowed assessment of the accuracy of different proxies for estimating beach volume changes. Results revealed that changes in the shoreline position cannot accurately reproduce beach volume changes on low-lying beaches where overwash processes are significant. Observations also suggested that volume estimations from beach profiles do not accurately represent subaerial volume changes at large profile distances on beaches with significant alongshore geomorphological variability. Accordingly, the segmentation of the beach into regularly spaced bins is proposed to assess alongshore variations in the beach volume with the accuracy of the topographic data. The morphological evolution of Pals beach during the study period showed a net shoreline retreat (- 4 m) and a significant sediment gain on the subaerial beach (+ 7.5 m3/m). The net gain of sediment is mostly due to the impact of the extreme storm, driving significant overwash processes that transport sediment landwards, increasing volume on the backshore and dunes. The increase of volume on the foreshore and the presence of cuspate morphologies along the shoreline also evidence post-storm beach recovery. Observed morphological changes exhibit a high variability along the beach related to variations in beach morphology. Changes in the morphology and migration of megacusps result in a high variability in the shoreline position and foreshore volume changes. On the other hand, larger morphological changes on the backshore and larger inundation distances

  16. Faunistic diversity of Maltese pocket sandy and shingle beaches: are these of conservation value?

    OpenAIRE

    Marika J. Gauci; Alan Deidun; Patrick J. Schembri

    2005-01-01

    The littoral fauna of Maltese sandy and shingle beaches is generally regarded as impoverished and consequently of little conservation interest. The fauna of three sandy and three shingle beaches was systematically sampled by coring, standardised searching and pitfall traps. Diversity and population density were highest at the surface for sandy beaches, but were highest below the surface for shingle. The two beach types had distinct suites of species and individual beaches were faunistically d...

  17. Mechanical grooming and beach award status are associated with low strandline biodiversity in Scotland

    Science.gov (United States)

    Gilburn, Andre S.

    2012-07-01

    Beach grooming and beach award status are both shown to be associated with low macroinvertebrate taxon richness in Scotland. Previous studies in California have revealed that mechanical raking to remove wrack from sandy beaches has negative ecological consequences for coastal ecosystems. In the current study the presence and absence of eight common taxa that inhabit beached wrack on sandy beaches in Scotland was assessed at 60 sites, 24 of which were groomed and 29 of which were in receipt of a beach award. On average 4.86 of the eight taxa were found to be present on ungroomed beaches, whereas only 1.13 taxa were present on groomed beaches. Thus, beach grooming seems to be having a major effect on the biodiversity of beach macroinvertebrates in Scotland. Fewer macroinvertebrate taxa were also found on award (1.5) compared to non-award (4.38) beaches. It was also revealed that award beaches were much more likely to be groomed than non-award beaches, with 69% of award beaches surveyed being groomed compared to only 6% of non-award beaches. This pattern is surprising as the awarding bodies discourage the removal of seaweed and regulations state that beached wrack should only be removed if it constitutes a nuisance. It is concluded that award status, not nuisance level, has the main factor driving most beach grooming and that this has resulted in the substantial loss of macroinvertebrate biodiversity from award beaches in Scotland. In conclusion it is shown that beach grooming has a substantial negative impact upon strandline macroinvertebrate biodiversity in Scotland and that grooming is much more likely to occur on award beaches.

  18. Myrtle Beach, South Carolina Tsunami Forecast Grids for MOST Model

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Myrtle Beach, South Carolina Forecast Model Grids provides bathymetric data strictly for tsunami inundation modeling with the Method of Splitting Tsunami (MOST)...

  19. Type and Quantity of Shipborne Garbage at Selected Tropical Beaches.

    Science.gov (United States)

    Mobilik, Julyus-Melvin; Ling, Teck-Yee; Husain, Mohd-Lokman; Hassan, Ruhana

    2016-01-01

    Marine debris is widely distributed at the coastal area of the global oceans; however, shipborne garbage source studies are still lacking to document the pollution in Malaysia Territorial Water. Thus, this study has adopted a standard method of beach marine debris survey at five beaches and inspected 115 vessels to assess the type and amount of debris from shipping source stranded on the beach. This study found that vessel visiting Malaysian ports observed the MARPOL 73/78 Annex V requirements; however, identified objects from shipping activity (1.3%; 2 items/km) found on the beaches indicate that there are vessels disposing of garbage illegally at sea. Therefore, there is a need to promote the use of biodegradable material and introduce environmental education to increase awareness on the vessel.

  20. Macrofauna and meiofauna of two sandy beaches at Mombasa, Kenya

    Digital Repository Service at National Institute of Oceanography (India)

    Ansari, Z.A.; Ingole, B.S.; Parulekar, A.H.

    Macrofauna and meiofauna of 2 sandy beaches having medium and fine sand particles, respectively, were investigated, quantitatively Macrofauna density was highest around high water mark and progressively decreased towards low water mark Meiofauna...

  1. Observation on foreshore morphodynamics of microtidal sandy beaches

    Digital Repository Service at National Institute of Oceanography (India)

    Dora, G.U.; SanilKumar, V.; Philip, C.S.; Johnson, G.

    cycles at these two loca- tions. In this context, our study aims to observe the foreshore sediment accretion and erosion processes in Figure 1. Study area covering two microtidal sandy beaches (Kunda- pura and Padukare) along Karnataka...

  2. Plastic pellets on the Caranzalem beach sands, Goa, India

    Digital Repository Service at National Institute of Oceanography (India)

    Nigam, R.

    Postmonsoonal survey of Caranzalem beach, Goa, India indicated the presence of plastic pellets. These pellets varied in shape, size and number, and are considered to be contaminants of marine environment...

  3. Transport and distribution of bottom sediments at Pirita Beach

    Directory of Open Access Journals (Sweden)

    Soomere, Tarmo

    2007-12-01

    Full Text Available The basic factors affecting sediment supply for and transport processes at Pirita Beach, a sandy section of the south­eastern coast of Tallinn Bay, are analysed. Observations of bathymetry, sediment properties and sources, sediment transport processes and their changes arising from coastal engineering activities are reported. The mean grain size is about 0.12 mm, with the fine sand fraction (0.063–0.125 mm accounting for about 77% of the sediments. Coarse sand dominates only along the waterline. The content of coarser sediments is greater in the northern part of the beach. A number of coastal engineering structures have blocked natural sediment supplies. The beach suffers from sediment deficit now and has lost about 400 m3 of sand annually from the dry beach between 1997 and 2005.

  4. Beach morphological variations over micro-time scales

    Digital Repository Service at National Institute of Oceanography (India)

    Murty, C.S.; Veerayya, M.; Sastry, J.S.; Varadachari, V.V.R.

    formation, variations in the profiles show anomalous behaviour. The differences in grain-size distribution of the sediments of these 2 beaches are attributed to the available wave energies at these 2 locations...

  5. Palm Beach, Florida Tsunami Forecast Grids for MOST Model

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Palm Beach, Florida Forecast Model Grids provides bathymetric data strictly for tsunami inundation modeling with the Method of Splitting Tsunami (MOST) model....

  6. Study of longshore current equations for currents in Visakhapatnam beach

    Digital Repository Service at National Institute of Oceanography (India)

    Chandramohan, P.; Rao, T.V.N.

    Longshore currents were measured along the Visakhapatnam Beach, Andhra Pradesh, India at weekly intervals from March 1978 to March 1979. Visual observations on breaker characteristics were also made during this period. Using modified Longuet...

  7. Wave refraction and littoral currents off Colva Beach, Goa

    Digital Repository Service at National Institute of Oceanography (India)

    Veerayya, M.; Murty, C.S.; Varadachari, V.V.R.

    Wave refraction studies have been carried out for waves of different periods approaching the coast at Colva, with directions of approach lying between180 degrees and 340 degrees, to obtain a qualitative picture of littoral flows along the beach...

  8. Source identification of a tar residue from Mumbai Beach

    Digital Repository Service at National Institute of Oceanography (India)

    Kadam, A.N.; Rokade, M.A.

    A tar residue from Mumbai Beach, Maharashtra, India was matched with the suspected source sample from a tanker using UV, IR and GLC techniques. Negligible differences in several ratios of UV absorbances and ratios of infrared transmittances...

  9. Virginia Beach Tsunami Forecast Grids for MOST Model

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Virginia Beach, Virginia Forecast Model Grids provides bathymetric data strictly for tsunami inundation modeling with the Method of Splitting Tsunami (MOST)...

  10. A holistic evaluation of a typical beach nourishment

    DEFF Research Database (Denmark)

    Margheritini, Lucia; Frigaard, Peter; Wahl, Niels Arne

    2007-01-01

    The coastal landscape in Denmark is characterized by multiple areas of geologic, biologic and recreational interests both at a national and international level. In the later years several guidelines have been set up in the coastal protection area. Recognizing the value of the healthy natural...... environment, the aims for the future are to ensure the presence of naturally shaped beaches and at the same time to reduce the risk of erosion. For this reason beach nourishment is used widely along the Danish North Sea coast and this method is preferred to solid constructions. Beach Nourishment...... is the primary method used by the Danish Coastal Authority for coastal protection and represents a management tool which serves a dual purpose. Beach Nourishment is protecting coastal lands as well as backshore properties (infrastructures, buildings etc.) and preserving natural heritages. Nevertheless, more...

  11. Type and Quantity of Shipborne Garbage at Selected Tropical Beaches

    Directory of Open Access Journals (Sweden)

    Julyus-Melvin Mobilik

    2016-01-01

    Full Text Available Marine debris is widely distributed at the coastal area of the global oceans; however, shipborne garbage source studies are still lacking to document the pollution in Malaysia Territorial Water. Thus, this study has adopted a standard method of beach marine debris survey at five beaches and inspected 115 vessels to assess the type and amount of debris from shipping source stranded on the beach. This study found that vessel visiting Malaysian ports observed the MARPOL 73/78 Annex V requirements; however, identified objects from shipping activity (1.3%; 2 items/km found on the beaches indicate that there are vessels disposing of garbage illegally at sea. Therefore, there is a need to promote the use of biodegradable material and introduce environmental education to increase awareness on the vessel.

  12. Daytona Beach, Florida Tsunami Forecast Grids for MOST Model

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Daytona Beach, Florida Forecast Model Grids provides bathymetric data strictly for tsunami inundation modeling with the Method of Splitting Tsunami (MOST) model....

  13. Reading Ombrone river delta evolution through beach ridges morphology

    Science.gov (United States)

    Mammi, Irene; Piccardi, Marco; Pranzini, Enzo; Rossi, Lorenzo

    2017-04-01

    The present study focuses on the evolution of the Ombrone River delta (Southern Tuscany, Italy) in the last five centuries, when fluvial sediment input was huge also as a consequence of the deforestation performed on the watershed. The aim of this study is to find a correlation between river input and beach ridges morphology and to explain the different distribution of wetlands and sand deposits on the two sides of the delta. Visible, NIR and TIR satellite images were processed to retrieve soil wetness associated to sand ridges and interdune silty deposits. High resolution LiDAR data were analysed using vegetation filter and GIS enhancement algorithms in order to highlight small morphological variations, especially in areas closer to the river where agriculture has almost deleted these morphologies. A topographic survey and a very high resolution 3D model obtained from a set of images acquired by an Unmanned Aerial Vehicle (UAV) were carried out in selected sites, both to calibrate satellite LiDAR 3D data, and to map low relief areas. Historical maps, aerial photography and written documents were analysed for dating ancient shorelines associated to specific beach ridges. Thus allowing the reconstruction of erosive and accretive phases of the delta. Seventy beach ridges were identified on the two wings of the delta. On the longer down-drift side (Northern wing) beach ridges are more spaced at the apex and gradually converge to the extremity, where the Bruna River runs and delimits the sub aerial depositional area of the Ombrone River. On the shorter up-drift lobe (Southern wing), beach ridges are closer, but run almost parallel each other. In this case, a rocky headland called Collelungo promontory closes and cuts the beach ridges sequence but shallow water depth allows sediment by pass. One kilometre to the south a more pronounced promontory encloses a small pocket beach (Cala di Forno) and identifies the limit of the subaerial depositionary area. Beach ridges

  14. Microbes in Beach Sands: Integrating Environment, Ecology and Public Health.

    Science.gov (United States)

    Whitman, Richard; Harwood, Valerie J; Edge, Thomas A; Nevers, Meredith; Byappanahalli, Muruleedhara; Vijayavel, Kannappan; Brandão, João; Sadowsky, Michael J; Alm, Elizabeth Wheeler; Crowe, Allan; Ferguson, Donna; Ge, Zhongfu; Halliday, Elizabeth; Kinzelman, Julie; Kleinheinz, Greg; Przybyla-Kelly, Kasia; Staley, Christopher; Staley, Zachery; Solo-Gabriele, Helena M

    2014-09-01

    Beach sand is a habitat that supports many microbes, including viruses, bacteria, fungi and protozoa (micropsammon). The apparently inhospitable conditions of beach sand environments belie the thriving communities found there. Physical factors, such as water availability and protection from insolation; biological factors, such as competition, predation, and biofilm formation; and nutrient availability all contribute to the characteristics of the micropsammon. Sand microbial communities include autochthonous species/phylotypes indigenous to the environment. Allochthonous microbes, including fecal indicator bacteria (FIB) and waterborne pathogens, are deposited via waves, runoff, air, or animals. The fate of these microbes ranges from death, to transient persistence and/or replication, to establishment of thriving populations (naturalization) and integration in the autochthonous community. Transport of the micropsammon within the habitat occurs both horizontally across the beach, and vertically from the sand surface and ground water table, as well as at various scales including interstitial flow within sand pores, sediment transport for particle-associated microbes, and the large-scale processes of wave action and terrestrial runoff. The concept of beach sand as a microbial habitat and reservoir of FIB and pathogens has begun to influence our thinking about human health effects associated with sand exposure and recreational water use. A variety of pathogens have been reported from beach sands, and recent epidemiology studies have found some evidence of health risks associated with sand exposure. Persistent or replicating populations of FIB and enteric pathogens have consequences for watershed/beach management strategies and regulatory standards for safe beaches. This review summarizes our understanding of the community structure, ecology, fate, transport, and public health implications of microbes in beach sand. It concludes with recommendations for future work in

  15. Medium-term dynamics of a middle Adriatic barred beach

    Directory of Open Access Journals (Sweden)

    M. Postacchini

    2017-09-01

    Full Text Available In recent years, attention has been paid to beach protection by means of soft and hard defenses. Along the Italian coast of the Adriatic Sea, sandy beaches are the most common landscape feature and around 70 % of the Marche region's coast (central Adriatic is protected by defense structures. The longest free-from-obstacle nearshore area in the region includes the beach of Senigallia, frequently monitored in the last decades and characterized by a multiple bar system, which represents a natural beach defense. The bathymetries surveyed in 2006, 2010, 2011, 2012 and 2013 show long-term stability, confirmed by a good adaptation of an analyzed stretch of the beach to the Dean-type equilibrium profile, though a strong short- to medium-term variability of the wave climate has been observed during the monitored periods. The medium-term dynamics of the beach, which deal with the evolution of submerged bars and are of the order of years or seasons, have been related to the wave climate collected, during the analyzed temporal windows, by a wave buoy located about 40 km off Senigallia. An overall interpretation of the hydrodynamics, sediment characteristics and seabed morphology suggests that the wave climate is fundamental for the morphodynamic changes of the beach in the medium term. These medium-term time ranges during which waves mainly come from NNE/ESE are characterized by a larger/smaller steepness and by a larger/smaller relative wave height, and seem to induce seaward/shoreward bar migration as well as bar smoothing/steepening. Moving southeastward, the bar dimension increases, while the equilibrium profile shape suggests the adaptation to a decreasing sediment size in the submerged beach. This is probably due to the presence of both the harbor jetty and river mouth north of the investigated area.

  16. Sediment Transport and erosion modeling at Heaundae Beach in Korea.

    Science.gov (United States)

    Do, K.; Yoo, J.; McCall, R. T.

    2016-12-01

    The sand pocket beaches with two headlands are global features, but it's not easy to predict berm and dune erosion due to alongshore variation of water depth. This study investigates the sediment transport and morphological change using available wave and beach profile data, as well as to assess the applicability of the XBeach morphological model (Roelvink et al., 2009). The Haeundae is small pocket beach, 1.4 km long, located in the southern corner of the Korean Peninsula. The Korea Institute of Ocean Science and Technology (KIOST) measured beach profile along 27 survey lines. The beach profiles were surveyed five times from 17 June 2014 to 10 October 2014. For this duration, a wave gauge (AWAC) was installed at a depth about 23 m off the coast of Haeundae Beach. Severe four storms attacked Haeundae Beach for this duration and these storms lasted about 1 2 days with a peak significant wave height of 2.5 4.0 m. The placed sand is fairly sorted and its median diameter is 0.23 mm. 2DH coastal morphological model, XBeach developed to simulate dune erosion due to storm impacts. The model is based on the nonlinear shallow water equation and resolves nearshore hydrodynamics by employing a 2DH description of wave groups and infragravity motions. In this study, the numerical model XBeach was compared with the field data and used to estimate the sediment transport pattern on the sand pocket beach. The numerical model resulted in a comparable prediction in the west-part, but the east-part cannot reproduce the erosion and accretion of the sand, partly due to complex bathymetry and the lack of sediment. This limitation needs to be improved to use measured sand thickness data in future study

  17. Engineering Analysis of Beach Erosion at Homer Spit, Alaska.

    Science.gov (United States)

    1985-09-01

    SPIT, ALASKA Nby (V) Orson P. Smith, Jane M. Smith, Mary A. Cialone Joan Pope, Todd L. Walton Coastal Engineering Research Center CD DEPARTMENT OF THE...BEACH EROSION AT HOMER Final report SPIT, ALASKA 6. PERFORMING ORG. REPORT NUMBER 7. AUTHOR(.) 8. CONTRACT OR GRANT NUMBER(.) Orson P. Smith, Jane M...preventing offshore losses and beach profile recession as well as protecting the roadway. I Unclassified SECURITY CLASSIFICATION OF THIS PAGE MWhen Data

  18. Mobilisation of toxic trace elements under various beach nourishments.

    Science.gov (United States)

    Pit, Iris R; Dekker, Stefan C; Kanters, Tobias J; Wassen, Martin J; Griffioen, Jasper

    2017-12-01

    To enhance protection and maintain wide beaches for recreation, beaches are replenished with sand: so-called beach nourishments. We compared four sites: two traditional beach nourishments, a mega beach nourishment and a reference without beach nourishment. Two sites contain calcareous-rich sand, whereas the other two sites have calcareous-poor sand. We aimed to understand hydrogeochemical processes to indicate factors critical for the mobility of trace elements at nourishments. We therefore analysed the chemical characteristics of sediment and pore water to ascertain the main drivers that mobilise toxic trace elements. With Dutch Quality Standards for soil and groundwater, the characteristics of sediment and pore water were compared to Target Values (the values at which there is a sustainable soil quality) and Intervention Values (the threshold above which the soil's functions are at risk). The pore water characteristics revealed that Target Values were regularly exceeded, especially for the nourishment sites and mainly for Mo (78%), Ni (24%), Cr (55%), and As (21%); Intervention Values for shallow groundwater were occasionally exceeded for As (2%), Cr (2%) and Zn (2%). The sediment characteristics did not exceed the Target Values and showed that trace elements were mainly present in the fine fraction of trace metal mobility at a mega beach nourishment it is important to retain seawater influences and limit oxidation processes. In this respect, a shoreface nourishment is recommended rather than a mega beach nourishment with a thick unsaturated zone. Consequently, we conclude that whether a site is carbonate-rich or carbonate-poor is unimportant, as the influence of seawater will prevent decalcification, creating a low risk of mobilisation of trace elements. Copyright © 2017 The Authors. Published by Elsevier Ltd.. All rights reserved.

  19. Strength and power characteristics of elite South African beach ...

    African Journals Online (AJOL)

    This study investigated the strength and power characteristics of 13 elite South African male beach volleyball players. The results indicate that elite beach volleyball players have a mean stature of 185.28 cm (";7.2), mean mass of 82.01 kg (";9.7) and percentage body fat of 13.12% (";2.4). Mean isokinetic peak torque values ...

  20. Geochemistry of dark coastal heavy-mineral beaches sand (Annaba ...

    African Journals Online (AJOL)

    Mots clés : Minéraux lourds- élément majeur –élément trace – les terres rares- sable de plage. The study area (Ain Achir and Plage-Militaire beaches) is a part of the Edough Massif/Annaba /Algeria. Recent beach sediments of Ain Achir are characterized by light sand and dark reddish one. This latter appears mostly after a ...

  1. Beach rocks of the central west coast of India

    Digital Repository Service at National Institute of Oceanography (India)

    Wagle, B.G.

    ) minerals, rock fragments and shells. Car bonate reaches up 'to 97% (% wt). Introduction Beach rock is a friable to well-cemented rock con sisting of beach material such as calcareous debris, mineral grains, and rock fragments and its cemented by calcium...-10%), rock fragments (4 14%), shells (10-49%)· along with calcareous,;e menting material (calcite and aragonite) which coasts the sand grains and sometimes completely fills the po res. Quartz grains are vitreous, transparent with con choidal fractures...

  2. Miramar (Goa) Beach Management Project: An Oceanographic Evaluation

    Digital Repository Service at National Institute of Oceanography (India)

    Mascarenhas, A.; Ingole, B.S.

    Infrastructure Development Corporation (GSIDC) had therefore decided to develop infrastructure for the convenience of beach users by proposing a Miramar beach management project (MBMP) that was to be administered by In "Coastal environments: Problems...; (2) formulate state policies on privatization and infrastructure development on the basis of the India infrastructure report 2002; (3) enact Goa infrastructure development act on the model of Gujarat development act to provide support to developmental...

  3. Medium-term dynamics of a middle Adriatic barred beach

    Science.gov (United States)

    Postacchini, Matteo; Soldini, Luciano; Lorenzoni, Carlo; Mancinelli, Alessandro

    2017-09-01

    In recent years, attention has been paid to beach protection by means of soft and hard defenses. Along the Italian coast of the Adriatic Sea, sandy beaches are the most common landscape feature and around 70 % of the Marche region's coast (central Adriatic) is protected by defense structures. The longest free-from-obstacle nearshore area in the region includes the beach of Senigallia, frequently monitored in the last decades and characterized by a multiple bar system, which represents a natural beach defense. The bathymetries surveyed in 2006, 2010, 2011, 2012 and 2013 show long-term stability, confirmed by a good adaptation of an analyzed stretch of the beach to the Dean-type equilibrium profile, though a strong short- to medium-term variability of the wave climate has been observed during the monitored periods. The medium-term dynamics of the beach, which deal with the evolution of submerged bars and are of the order of years or seasons, have been related to the wave climate collected, during the analyzed temporal windows, by a wave buoy located about 40 km off Senigallia. An overall interpretation of the hydrodynamics, sediment characteristics and seabed morphology suggests that the wave climate is fundamental for the morphodynamic changes of the beach in the medium term. These medium-term time ranges during which waves mainly come from NNE/ESE are characterized by a larger/smaller steepness and by a larger/smaller relative wave height, and seem to induce seaward/shoreward bar migration as well as bar smoothing/steepening. Moving southeastward, the bar dimension increases, while the equilibrium profile shape suggests the adaptation to a decreasing sediment size in the submerged beach. This is probably due to the presence of both the harbor jetty and river mouth north of the investigated area.

  4. Beachrock morphology and genesis on a paraglacial beach

    Science.gov (United States)

    Cooper, J. A. G.; Green, A. N.; Wiles, E. A.

    2017-10-01

    Beachrock is present in deep, stable sections of a mixed sand and gravel beach at Whitepark Bay (55o14‧N) on the paraglacial coast of Northern Ireland. The beachrock was revealed following progressive and extreme beach erosion during two particularly stormy winters (2013/14 and 2014/15). It occurs as large (up to 1 m diameter, 0.2 m thick), rounded, disc-shaped concretions in which original beach bedding structures are preserved. Both sand and gravel beach facies are cemented. The cements are similar to those of tropical beachrocks and comprise an initial thin micrite rim, and subsequent grain rims of aragonitic needles. The cementation is attributed to saturation of beach groundwater with calcium carbonate sourced from adjacent Cretaceous chalk outcrop in cliffs behind the beach and dunes. The micrite rims suggest microbial activity in the initial cementation, possibly by scavenging from chalk and skeletal carbonate grains. Subsequent aragonite rims were formed through degassing of CO2 aided by tidal water level fluctuations. Despite similar cementation processes to low latitude beachrocks, only isolated concretions occur rather than extensive shore-parallel outcrops. Conditions necessary for cementation (and ultimately preservation) in this cold temperate and paraglacial setting include long-term beach stability, a carbonate source (in this case, adjacent chalk cliffs and stream sapping) and tidal water level fluctuations. Bacterial activity may initiate calcite precipitation. Following extreme storms and with progressive shoreline retreat prompted by rising sea levels, increased reporting of cold-water beachrocks is to be expected as formerly stable sections of beaches are exposed to wave action.

  5. An introduction to the Hele-Shaw beach experiments

    Science.gov (United States)

    Thornton, Anthony; van der Horn, Bram; van der Meer, Devaraj; Zweers, Wout; Bokhove, Onno

    2012-11-01

    The sea, as well as being a destructive force can also be constructive and can move great quantities of sand often forming a beach. Waves can move material both up and down the beach, leading to the construction of sloping beaches. Wave-sand dynamics are studied via experiments. The tank is narrow, just over one-particle diameter wide, creating a quasi-2D set-up also geared towards mathematical modelling. There is strong two-way feedback between the free-surface waves and the beach morphology. The waves transport the particles, changing the basal topography, causing the waves to transform from rolling to breaking. ``All'' classical breaker types (plunging, collapsing, spilling and surging) are observed on a time-scale of about a second. Finally, on longer time-scales many steady beach morphologies are observed, including dry and wet beaches, dry berms/dunes, and bars. The highlight being dry dunes which have dynamic waves crashing on the seaward-side and quiescent water on the far side.

  6. Post-monsoon equilibrium beach profiles and longshore sediment transport rates at Candolim, Miramar and Keri beaches of Goa, India.

    Digital Repository Service at National Institute of Oceanography (India)

    Jayakumar, S.; Yadhunath, E.M.; Jishad, M.; Gowthaman, R.; Rajasekaran, C.; Pednekar, P.S.

    Equilibrium profile is one of the concepts in coastal geomorphology which is a result of the balance of destructive versus constructive forces. Two equilibrium beach profile models, viz . Bruun/Dean’s two thirds power model and modified Bodge...

  7. Understanding beach health throughout the Great Lakes-Entering a new era of investigations

    Science.gov (United States)

    ,

    2010-01-01

    For over a decade, the U.S. Geological Survey (USGS) has been a leader in the science of beach health. The overall mission of this work is to provide science-based information and methods that will allow beach managers to more accurately make beach closure and advisory decisions, understand the sources and physical processes affecting beach contaminants, and understand how science-based information can be used to mitigate and restore beaches and protect the public. The work consists of four science elements-real-time assessments; pathogens and microbial source tracking; coastal processes; and data analysis, interpretation, and communication - which are described in this fact sheet. Some of the key questions for USGS beach research are the following: Are there better ways to inform the public whether they can use a beach without risking their health? How do new rapid analytical methods compare to traditional methods for determining concentrations of fecal-indicator bacteria at beaches? Are pathogens present at beaches and, if so, how do they get to the beach, and what is their source? How do sand movement and wave action on the beach affect fecal-indicator-bacteria and pathogen concentrations in the lake water? What are the best indicators of pathogenic microorganisms? With so many potential sources of fecal contamination at a beach, what methods can be used to distinguish the contributions from humans? What characteristics of beaches contribute most to influencing bacterial indicator and pathogen concentrations in beach sands and groundwater?

  8. On the role of impermeable groins on barred beach morphodynamics: Example of Matalascañas beach, Spain

    Science.gov (United States)

    Sedrati, Mouncef; Morales González, Juan Antonio

    2017-04-01

    Several studies on barred beaches in settings with mesotidal to macrotidal regimes have focused on cross-shore and alongshore bar mobility. Whereas the general link between hydrodynamics, sediment transport and the response of the intertidal bars and shoreline evolution has been recognized in the literature, the role of coastal defense structures (Breakwaters, groins, seawalls) on bar-trough systems morphodynamics have received more much less attention and the field-based experimental studies of these environments are rare. The main aim of this paper is to highlight the contrasting behavior of a natural and protected barred beach under several hydrodynamics conditions. This paper presents detailed hydrodynamic and morphological data from a field experiment spanning 10 days undertaken in Matalascañas beach, a mesotidal protected vs natural barred beach in the Southern Spanish coast. This mesotidal beach experienced intense erosion in the recent past and therefore it has been partially protected by groins (protection of sea-front touristic residences). During the fieldwork, an intertidal bars in the protected and non-protected areas highlighted contrasting morphological behaviour. The non-protected barred beach shows a less pronounced bar-trough system than the protected zone. Under low energy conditions (significant wave height 1m), the protected and non-protected zones show a flattening bars processes. The findings of the present study suggest that cross-shore vs longshore bar mobility may even be mitigated by the presence of the groins, which favour onshore than longshore bar migration.

  9. Characterization of microplastic and mesoplastic debris in sediments from Kamilo Beach and Kahuku Beach, Hawai'i.

    Science.gov (United States)

    Young, Alan M; Elliott, James A

    2016-12-15

    Sediment samples were collected from two Hawai'ian beaches, Kahuku Beach on O'ahu and Kamilo Beach on the Big Island of Hawai'i. A total of 48,988 large microplastic and small mesoplastic (0.5-8mm) particles were handpicked from the samples and sorted into four size classes (0.5-1mm, 1-2mm, 2-4mm, 4-8mm) and nine color categories. For all sizes combined the most common plastic fragment color was white/transparent (71.8%) followed by blue (8.5%), green (7.5%), black/grey (7.3%), red/pink (2.6%), yellow (1.2%), orange (0.6%), brown (0.3%) and purple (0.2%). Color frequency distribution based on both numbers and mass of particles was not significantly different among the various size classes nor between the two beaches. White and black/grey resin pellets accounted for 11.3% of the particles collected from Kahuku Beach and 4.2% of the particles from Kamilo Beach. Plastic type based on Raman Spectrometer analysis of a small representative subsample indicated that most of the fragments were polyethylene and a few were polypropylene. Copyright © 2016 Elsevier Ltd. All rights reserved.

  10. Mineral legislations applicable to beach sand industry

    International Nuclear Information System (INIS)

    D'Cruz, Eric

    2016-01-01

    India has got a wealth of natural resources in different geological environs and shoreline placers form an important constituent of the natural resources. Large reserves of beach sand minerals, viz. imenite, rutile, leucoxene, zircon, sillimanite, garnet and monazite are the economic minerals in the coastal and inland placer sands. In the federal structure of India, the State Governments are the owners of minerals located within their respective boundaries. The State Governments grant the mineral concessions for all the minerals located within the boundary of the State, under the provisions of the Acts and Rules framed for the purpose. Though the mineral wealth is under the control of the State, the power for framing the rules for the grant of mineral concessions vastly rest with the Central Government. Since mineral concessions are often granted for a longer duration of thirty to fifty years or more, a historical perspective of these rules are imperative in understanding the issues involved with BSM mining industry. Under the Govt. of India Act, 1935, Regulation of Mines and Oilfields and Mineral Development was kept under Federal control, declared by Federal Law. The word 'Federal' was substituted by the word 'Dominion' by the India (Provincial Constitution) Order, 1947. No legislation was, however, enacted in pursuance of above power until after Independence. However, the Govt. on India made the Mining Concession (Central) Rules, 1939 for regulating grants of prospecting license

  11. Slurry discharge management-beach profile prediction

    Energy Technology Data Exchange (ETDEWEB)

    Bravo, R.; Nawrot, J.R. [Southern Illinois University at Carbondale, Carbondale, IL (United States). Dept. of Civil Engineering

    1996-11-01

    Mine tailings dams are embankments used by the mining industry to retain the tailings products after the mineral preparation process. Based on the acid-waste stereotype that all coal slurry is acid producing, current reclamation requires a four foot soil cover for inactive slurry disposal areas. Compliance with this requirement is both difficult and costly and in some case unnecessary, as not all the slurry, or portions of slurry impoundments are acid producing. Reduced costs and recent popularity of wetland development has prompted many operators to request reclamation variances for slurry impoundments. Waiting to address slurry reclamation until after the impoundment is full, limits the flexibility of reclamation opportunities. This paper outlines a general methodology to predict the formation of the beach profile for mine tailings dams, by the discharge volume and location of the slurry into the impoundment. The review is presented under the perspective of geotechnical engineering and waste disposal management emphasizing the importance of pre-planning slurry disposal land reclamation. 4 refs., 5 figs.

  12. Faunistic diversity of Maltese pocket sandy and shingle beaches: are these of conservation value?

    Directory of Open Access Journals (Sweden)

    Marika J. Gauci

    2005-06-01

    Full Text Available The littoral fauna of Maltese sandy and shingle beaches is generally regarded as impoverished and consequently of little conservation interest. The fauna of three sandy and three shingle beaches was systematically sampled by coring, standardised searching and pitfall traps. Diversity and population density were highest at the surface for sandy beaches, but were highest below the surface for shingle. The two beach types had distinct suites of species and individual beaches were faunistically distinct. Maltese sandy and shingle beaches are of conservation importance for their habitat-restricted species, some of which have limited local and regional distributions, and are internationally protected.

  13. Experimental Study of Irregular Waves on a Gravel Beach

    Science.gov (United States)

    Hu, Nai-Ren; Wu, Yun-Ta; Hwung, Hwung-Hweng; Yang, Ray-Yeng

    2017-04-01

    In the east coast of Taiwan, the sort grain size more belongs to cobble or gravel, which is physically distinct compared to the sandy beach in the west coast of Taiwan. Although gravel beaches can dissipate more of wave energy, gravel beaches were eroded and coastal road were damaged especially during typhoons. The purpose of this study is to investigate the geomorphological response of gravel beach due to irregular waves. This experiment was carry out in a 21m long, 50 cm wide, 70 cm high wave tank at Tainan Hydraulics Laboratory, National Cheng-Kung University, Taiwan. To simulate of the geometry in the east coast of Taiwan, a physical model with 1/36 scale-down was used, in which the seawall was 10cm built upon a 1:10 slope and gravel grains with D50 being 3.87 mm was nourished in front of the seawall. In terms of typhoon-scale wave condition, irregular waves with scale-down conditions were generated for 600 s for each scenarios and, three different water levels with respect to the gravel beach are designed. Application of laser combined with image processing to produce 3D topographic map, the erosion zone and accretion zone would be found. The resulting morphological change of gravel beach will be measured using an integrated laser and image processing tool to have 3D topographic maps. It is expected to have more understanding about under what conditions the gravel coasts suffer the least damage. In particular, the relation between erosion rates of gravel beach, the angle of gravel slope and the length of the plane on the gravel slope will be achieved

  14. Feeding ecology of the beach silverside Atherinella blackburni (Atherinopsidae in a tropical sandy beach, Southeastern Brazil

    Directory of Open Access Journals (Sweden)

    Júlio Guazzelli Gonzalez

    Full Text Available Abstract The feeding ecology of the beach silverside (Atherinella blackburni in the surf zone of a tropical sand beach, located in the southeastern Brazil, was accessed through the gut content analysis of 198 fish. Factors such as fish's size, season and day period were analysed to understand how these variables affect the diet composition of the species. Results show that A. blackburni is a coastal neritic fish with a broad feeding niche. Most recurrent prey were zooplanktonic crustaceans, insects and benthic molluscs, in which Copepoda crustaceans were the dominant dietary item in occurrence and abundance. A. blackburni appears to have a slight ontogenetic shift in its diet, changing from benthic molluscs to crustaceans and insects along its life cycle. The diel activity also reveals to be an important factor to the A. blackburni feeding ecology. The predominant occurrence of small fish during the morning, along with the main preys for this size class, suggests that small individuals use shallower waters as feeding grounds during the morning and, during the night, they move to deeper waters for protection against predators.

  15. 77 FR 5185 - Drawbridge Operation Regulation; Atlantic Intracoastal Waterway Albermarle Sound to Sunset Beach...

    Science.gov (United States)

    2012-02-02

    ... Albermarle Sound to Sunset Beach, Scotts Hill, NC AGENCY: Coast Guard, DHS. ACTION: Notice of temporary... Figure Eight Beach Homeowners Association, who owns and operates the Figure Eight Swing Bridge across the...

  16. Observations on the ecology of some sandy beaches of the southwest coast of India

    Digital Repository Service at National Institute of Oceanography (India)

    Panikkar, B.M.; Rajan, S.

    The seasonal cycles of organic matter and chlorophyll at some beaches of the Kerala Coast were studied in relation to the abundance of the interstitial fauna at one of the beaches The faunal abundance showed no definite correlation either...

  17. Land use and beach closure 2004-2013 in the United States

    Data.gov (United States)

    U.S. Environmental Protection Agency — The dataset contains the beach closure data and land use information around each beach in 2006 and 2011 in the United States. The original data are created by EPA...

  18. Dose rates of beach sands along the Enshu-nada coast

    International Nuclear Information System (INIS)

    Minato, Susumu; Shimo, Michikuni

    2014-01-01

    In order to understand the mechanism of beach-to-beach variations in dose rates, measurements at 35 sand beaches were carried out along the Enshu-nada coast (a total of 140km). The sand samples were collected at 10 beaches to obtain the concentrations of potassium, uranium and thorium by means of Ge(Li) spectroscopy. Factors affecting the variation in dose rates were discussed, incorporating these data with data of coastal sea-bottom sediments taken by the Geological Survey of Japan. Two-dimensional measurements were performed at 50 locations each in two beaches near the Tenryu river mouth to know within-beach variations in detail. Contour maps of the data revealed a considerable regularity. It was found from simple analyses of the data collected in this work that the dose rate levels at beaches are affected by the distance from the river mouth, erosion or sedimentation of beach, and depth distribution of seawater. (author)

  19. Response of intertidal sandy-beach macrofauna to human trampling: An urban vs. natural beach system approach.

    Science.gov (United States)

    Reyes-Martínez, Ma José; Ruíz-Delgado, Ma Carmen; Sánchez-Moyano, Juan Emilio; García-García, Francisco José

    2015-02-01

    Sandy beaches are subjected to intense stressors, which are mainly derived from the increasing pattern of beach urbanization. These ecosystems are also a magnet for tourists, who prefer these locations as leisure and holiday destinations, and such activity further increases the factors that have an adverse effect on beaches. In the study reported here the effect of human trampling on macrofauna assemblages that inhabit intertidal areas of sandy beaches was assessed using a BACI design. For this purpose, three contrasting sectors of the same beach were investigated: an urban area with a high level of visitors, a protected sector with a low density of users, and a transitional area with a high level of human occupancy. The physical variables were constant over time in each sector, whereas differences were found in the intensity of human use between sectors. Density variations and changes in the taxonomic structure of the macrofauna with time were shown by PERMANOVA analysis in the urban and transitional locations whereas the protected sector remained constant throughout the study period. The amphipod Bathyporeia pelagica appears sensitive to human trampling pressure and the use of this species as a bioindicator for these types of impact is recommended. Copyright © 2014 Elsevier Ltd. All rights reserved.

  20. Beach litter occurrence in sandy littorals: The potential role of urban areas, rivers and beach users in central Italy

    Science.gov (United States)

    Poeta, Gianluca; Conti, Luisa; Malavasi, Marco; Battisti, Corrado; Acosta, Alicia Teresa Rosario

    2016-11-01

    Litter washed ashore on the coastline, also called beach litter, constitutes one of the most obvious signs of marine litter pollution. Surveys of beach litter represent a fundamental tool for monitoring pollution in the marine environment and have been used world-wide to classify and quantify marine litter. Identifying the sources of marine and beach litter is, together with education, the prime weapon in combating this type of pollution. This work investigates the impact of three main potential land sources on litter occurrence: urban areas, rivers and beach users. Three sources were analyzed simultaneously on a broad scale (Lazio region, central Italy) using a random sampling design and fitting a generalized linear mixed-effect model. The results show that urban areas are the main drivers for the occurrence of marine litter along central Italy's coastal ecosystems, suggesting that the presence of such litter on Lazio beaches could be effectively reduced by identifying failings in recycling and waste collection procedures and by improving waste processing systems and sewage treatment in urban areas.

  1. Plastic pollution on the Baltic beaches of Kaliningrad region, Russia.

    Science.gov (United States)

    Esiukova, Elena

    2017-01-30

    Contamination of sandy beaches of the Baltic Sea in Kaliningrad region is evaluated on the base of surveys carried out from June 2015 to January 2016. Quantity of macro/meso/microplastic objects in the upper 2cm of the sandy sediments of the wrack zone at 13 sampling sites all along the Russian coast is reported. Occurrence of paraffin and amber pieces at the same sites is pointed out. Special attention is paid to microplastics (range 0.5-5mm): its content ranges between 1.3 and 36.3 items per kg dry sediment. The prevailing found type is foamed plastic. No sound differences in contamination are discovered between beaches with high and low anthropogenic load. Mean level of contamination is of the same order of magnitude as has been reported by other authors for the Baltic Sea beaches. Copyright © 2016 Elsevier Ltd. All rights reserved.

  2. Factors influencing the detection of beach plastic debris.

    Science.gov (United States)

    Lavers, Jennifer L; Oppel, Steffen; Bond, Alexander L

    2016-08-01

    Marine plastic pollution is a global problem with considerable ecological and economic consequences. Quantifying the amount of plastic in the ocean has been facilitated by surveys of accumulated plastic on beaches, but existing monitoring programmes assume the proportion of plastic detected during beach surveys is constant across time and space. Here we use a multi-observer experiment to assess what proportion of small plastic fragments is missed routinely by observers, and what factors influence the detection probability of different types of plastic. Detection probability across the various types of plastic ranged from 60 to 100%, and varied considerably by observer, observer experience, and biological material present on the beach that could be confused with plastic. Blue fragments had the highest detection probability, while white fragments had the lowest. We recommend long-term monitoring programmes adopt survey designs accounting for imperfect detection or at least assess the proportion of fragments missed by observers. Copyright © 2016 Elsevier Ltd. All rights reserved.

  3. Fatal Chest Injury Caused by Windblown Beach Umbrella.

    Science.gov (United States)

    Harris, Allyse B; Gunther, Wendy M; Fantaskey, Amy P; Weinstein, Lawrence B

    2018-03-01

    We present the case of a windblown beach umbrella inflicting fatal penetrating blunt force to the chest of a 55-year-old female beachgoer. A postmortem examination and detailed case history review were performed which revealed left ventricular trauma, determined to be the cause of death. Using recorded wind speeds from the date of the incident and the weight of the umbrella, we were able to calculate the pressure with which the umbrella struck the victim to be 16,000 PSI. Witness reports, medical records, scene details, and examination of a rental beach umbrella allowed the forensic pathologist to conclude that the object causing this woman's death was a windblown beach umbrella. © 2018 American Academy of Forensic Sciences.

  4. Sediment Transport Study in Haeundae Beach using Radioisotope Labelled Compound

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Jin Seop; Kim, Jong Bum; Jung, Sung Hee [Korea Atomic Energy Research Institute, Taejon (Korea, Republic of); Lee, Jong Sup [Pukyong National Univ., Busan (Korea, Republic of)

    2005-07-01

    Haeundae beach is one of the most famous resorts in Korea and plays an important role as a special tourism district. However, the length and width of the beach are being reduced continuously, which would have bad influence on the regional economy and be the financial burden to the local authority considering that a large amount of budget is spent in the beach nourishment annually. Hence, it is necessary to understand the dynamic behavior of sediments in the coast for the systematic preservation plan of coastal environment. Lately a monitoring system using radioactive isotope as tracers is considered as a novel technique in understanding the dynamic transport of sediments. The objective of this study is to investigate the possible variations in sedimentary distribution and quantify the characteristics of sediments using radiotracer.

  5. Sediment Transport Study in Haeundae Beach using Radioisotope Labelled Compound

    International Nuclear Information System (INIS)

    Kim, Jin Seop; Kim, Jong Bum; Jung, Sung Hee; Lee, Jong Sup

    2005-01-01

    Haeundae beach is one of the most famous resorts in Korea and plays an important role as a special tourism district. However, the length and width of the beach are being reduced continuously, which would have bad influence on the regional economy and be the financial burden to the local authority considering that a large amount of budget is spent in the beach nourishment annually. Hence, it is necessary to understand the dynamic behavior of sediments in the coast for the systematic preservation plan of coastal environment. Lately a monitoring system using radioactive isotope as tracers is considered as a novel technique in understanding the dynamic transport of sediments. The objective of this study is to investigate the possible variations in sedimentary distribution and quantify the characteristics of sediments using radiotracer

  6. Alongshore variability in nearshore-beach-dune interaction

    Science.gov (United States)

    Price, Timothy; Donker, Jasper

    2017-04-01

    At straight, sandy coasts, wave- and wind-induced processes often lead to the development of an alongshore-variable morphology in the nearshore, beach and dune systems on spatial scales from tens of metres to a few kilometres. Although our understanding of this morphological patterning is quite mature for the different sub-systems, we are only starting to understand how these patterns affect each other across the entire nearshore-beach-dune system. The morphological patterns emerging in subtidal bars often exhibit landward-protruding shallower areas at regular intervals alongshore, known as horns. The alongshore depth variation in these so-called crescentic bars is thought to affect the morphodynamics of the more landward intertidal beach by acting as an alongshore-variable filter for the wave field, both during erosional storm events and the accretionary recovery periods in between storms. Recent studies have revealed that persistent (years - decades) foredune accretion and embryo dune development primarily border wider beach areas, especially along fetch-limited narrow (embryo dunes along wider parts of the beach are less prone to erosion during 'moderate' storms. Although the alongshore variability thus clearly spans the entire nearshore-beach-dune system, this is not reflected in our current understanding of the underlying processes, especially those of beach-dune recovery. In a 15-year data set of planview time-exposure images from Egmond aan Zee, The Netherlands, we observed that the horns of crescentic bars regularly separate from the bar and subsequently migrate onshore towards the beach as a spatially coherent structure, termed Shoreward Propagating Accretionary Waves, or SPAWs. We hypothesize that the onshore welding of these SPAWs results in alongshore variations in intertidal beach width that, in turn, provide alongshore variations in the magnitude of wind-induced transport and dune development. To test this hypothesis, we analysed a data set of Lidar

  7. Factors controlling the mobility of shingle beaches, with particular reference to the north Kent coast

    OpenAIRE

    McFarland, S.M.

    1999-01-01

    Despite their scarcity on a global scale, shingle beaches are a common feature of the coastline ofthe UK, in particular southern England. Shingle beaches have the ability to dissipate large amounts of wave energy over short distances. As a result of this ability, shingle beaches have become a popular 'soft' engineering option for providing protection to coastal regions from the effects of sea flooding and erosion. Shingle beaches are mobile features and, as a result, are subjected to trans...

  8. Plastic Pollution at a Sea Turtle Conservation Area in NE Brazil: Contrasting Developed and Undeveloped Beaches.

    OpenAIRE

    SUL, J. A. I. do.; SANTOS, I. R.; FRIEDRICH, A. C.; MATTHIENSEN, A.; FILLMANN, G.

    2011-01-01

    Sea turtles are highly susceptible to plastic ingestion and entanglement. Beach debris were surveyed along the most important sea turtle nesting beaches in Brazil (Costa dos Coqueiros, Bahia State). No significant differences among developed and undeveloped beaches were observed in terms of total number of items. Local sources (tourism activities) represented 70% of debris on developed beaches, where cigarette butts, straws, paper fragments, soft plastic fragments, and food packaging...

  9. Morphosedimentary evolution of carbonate sandy beaches at decadal scale : case study in Reunion Island , Indian Ocean

    Science.gov (United States)

    Mahabot, Marie-Myriam; Pennober, Gwenaelle; Suanez, Serge; Troadec, Roland; Delacourt, Christophe

    2017-04-01

    Global change introduce a lot of uncertainties concerning future trajectory of beaches by directly or indirectly modifying major driving factors. An improved understanding of the past shoreline evolution may help for anticipate future coastline response. However, in tropical environment, studies concerning carbonate beaches dynamics are scarce compared to open sandy beaches. Consequently, coral reef protected beaches morphological adjustment is still poorly understood and long-term evolution rate are poorly quantified in these specific environment. In this context, La Reunion Island, insular department of France located in Indian Ocean, constitute a favoured laboratory. This high volcanic island possesses 25 km of carbonate beaches which experience hydrodynamic forcing specific from tropical environment: cyclonic swell during summer and long period swell during winter. Because of degraded coral reef health and high anthropogenic pressure, 50% of the beaches are in erosion since 1970s. Beach survey has been conducted since 1990s by scientist and are now encompassed as pilot site within a French observatory network which guarantee long-term survey with high resolution observational techniques. Thus, La Reunion Island is one of the rare carbonate beach to be surveyed since 20 years. This study aims to examined and quantify beach response at decadal scale on carbonate sandy beaches of Reunion Island. The study focus on 12 km of beaches from Cap Champagne to the Passe de Trois-Bassins. The analyze of 15 beach profile data originated from historical and DGPS beach topographic data confirm long term trend to erosion. Sediment lost varies between 0.5 and 2 m3.yr-1 since 1998. However longshore current have led to accretion of some part of beach compartment with rate of 0.7 to 1.6 m3.yr-1. Wave climate was examined from in-situ measurement over 15 years and show that extreme waves associated with tropical cyclones and long period swell play a major role in beach dynamics

  10. Temporal shift of sea turtle nest sites in an eroding barrier island beach

    Science.gov (United States)

    Fujisaki, Ikuko; Lamont, Margaret M.; Carthy, Raymond R.

    2018-01-01

    Shoreline changes affect functionality of a sandy beach as a wildlife habitat and coastal erosion is among the primary causes of the changes. We examined temporal shifts in locations where loggerheads placed nests in relation to coastal erosion along a barrier island beach in the northern Gulf of Mexico. We first confirmed consistency in long-term (1855–2001), short-term (1976–2001), and more recent (2002–2012) shoreline change rates in two adjacent beach sections, one historically eroding (west beach) and the other accreting (east beach). The mean annual shoreline change rate in the two sections was significantly different in all time periods. The recent (1998–2012) mean change rate was −10.9 ± 9.9 m/year in the west beach and −2.8 ± 4.9 m/year in the east beach, which resulted in the loss of about 70% and 30% of area in the west and east beaches, respectively. Loggerheads nested significantly closer to the vegetation line in 2012 than in 2002 in the west beach but the difference between the two time periods was not significant in the east beach. However, the distance from nests to the vegetation line from 2002 to 2014 was significantly reduced annually in both beaches; on average, loggerheads nested closer to the vegetation line by 9 m/year in the west beach and 5.8 m/year in the east beach. The observed shoreline change rate and corresponding shift of nest placement sites, combined with the forecasted future beach loss, highlighted the importance of addressing the issue of beach erosion to conserve sandy beach habitats.

  11. Sports injuries and illnesses during the second Asian Beach Games.

    Science.gov (United States)

    Al-Shaqsi, Sultan; Al-Kashmiri, Ammar; Al-Risi, Ahmed; Al-Mawali, Suleiman

    2012-09-01

    Prevention of sport injuries and illnesses is a focus for epidemiological surveillance. To record and analyse all sports injuries and illnesses registered during the second Asian Beach Games. A descriptive epidemiological study using the International Olympic Committee Surveillance system to register injuries and illnesses during the second Asian Beach Games. The second Asian Beach Games hosted 1132 athletes from 43 countries competing in 14 beach sports. All National Olympic Committees' physicians of the participating teams were invited to report all injuries and illnesses. In addition, medical officers at the different Olympic venues and the main Olympic village reported injuries and illnesses treated at the clinics on a daily basis. A total of 177 injuries were reported equating to an incidence rate of 156.4 per 1000 registered athletes. Tent pegging recorded the highest incidence of injuries with 357 per 1000 registered athletes. The most prevalent injuries were in the foot/toe with 14.1% of all reported injuries. The majority of injuries were incurred during competition (75.4%). In addition, the most common mechanism of injury was contact with another athlete (n=42, 23.7%) and combined sudden and gradual overuse contributed to 30% of the total injury burden. Furthermore, 118 illnesses were reported resulting in an incidence rate of 104.2 illnesses per 1000 registered athletes. The most affected system was the respiratory tract (39.1%) with infection being the most common cause (n=33, 38.0%). The incidence of injury and illness differed significantly among the 14 sports. The data indicate that the risk of injury from beach games is sport dependant. This means that any preventive measures have to be tailored for each discipline. Furthermore, the study showed that respiratory infections are the commonest illness in beach sports and therefore, event organisers should focus improving public health measures and hygiene awareness.

  12. The Virginia Beach shallow ground-water study

    Science.gov (United States)

    Johnson, Henry M.

    1999-01-01

    IntroductionVirginia Beach is a rapidly growing city of more than 425,000 people. Sources of fresh water within the city, however, are limited. Prior to 1998, the Virginia Beach Public Utilities Department met the city's water needs by purchasing treated drinking water from the City of Norfolk. Because Norfolk had to meet its own requirements, the amount of water available to Virginia Beach was limited to about 30 million gallons per day (mgd) and even less during droughts. This water supply was supplemented with ground water from city-owned, community, and private wells. In many parts of the city, however, ground water cannot be used because of high concentrations of chloride, iron, and (or) sulfur, which give the water an unpleasant taste.In early 1998, a pipeline came on-line that can carry up to 45 mgd of water from Lake Gaston to Virginia Beach. The Gaston pipeline has alleviated concerns about water supply and quality for most residents living north of the "Green Line." These residents primarily use ground water only for small-scale domestic activities such as watering lawns, filling ponds and pools, and washing cars. City water and sewer services have been extended beyond the Green Line into the "Transition Area." Residents and businesses south of the Transition Area, however, continue to rely on ground water to meet most of their needs for potable and non-potable water. To help assure a continued, reliable supply of ground water, the U.S. Geological Survey (USGS), in cooperation with the City of Virginia Beach Public Utilities Department, has begun an assessment of the shallow ground-water resources underlying the City of Virginia Beach.

  13. Wave Runup on a Frozen Beach Under High Energy Conditions

    Science.gov (United States)

    Didier, D.; Bernatchez, P.; Dumont, D.; Corriveau, M.

    2017-12-01

    High and mid-latitude beaches have typical morphological characteristics influenced by nearshore processes prevailing under ice conditions during cold season. Nearshore ice complexes (NIC) offer a natural coastal protection by covering beach sediments, while offshore ice-infested waters dissipate incoming waves. Climate change contributes to sea ice shrinking therefore reducing its protection against erosion and flooding. In the Estuary and Gulf of the St. Lawrence (ESL, GSL) (eastern Canada), sea ice cover undergoes an overall shrinking and simulated future projections tend toward a negligible effect on wave climate by 2100. Quantifying the effect of nearshore dynamics on frozen beaches is therefore imperative for coastal management as more wave energy at the coast is expected in the future. To measure the effect of a frozen beach on wave runup elevations, this study employs a continuous video recording of the swash motion at 4Hz. Video-derived wave runup statistics have been extracted during a tidal cycle on a frozen beach, using the Pointe-Lebel beach (ESL) as a test case. Timestack analysis was combined with offshore water levels and wave measurements. A comparison of runup under icy conditions (Dec. 30 2016) with a runup distribution during summer was made under similar high energy wave conditions. Results indicate high runup excursions potentially caused by lowered sediment permeability due to high pore-ice saturation in the swash zone, accentuating the overwash of the eroding coastline and thus the risk of flooding. With projected reduction in coastal sea ice cover and thus higher wave energy, this study suggests that episodes of degradation and weakening could influence the coastal flood risk in mid- and high-latitude cold environments.

  14. Beach and dunal system monitoring at Su Giudeu beach, Sardinia (Italy)

    Science.gov (United States)

    Balzano, Andrea; Sulis, Andrea

    2014-05-01

    Even if coastal floods are quite rare events in Sardinia (Italy) at present, they have had dramatic consequences for coastal communities, particularly in conjunction with river flooding. However, flood risk (defined as the product of event probability, vulnerability and value of assets) is expected to increase significantly in the future, due to climate change, defence degradation and sea level rise. Sardinia island has a costal length of approximately 1.900 km including minor neighbouring islands (25% of the entire Italian coasts) and the estimation of the potential exposure of coastal communities to flooding is therefore a critical task. To date methods for achieving this have been based on modelling of coastal inundation using hydrodynamic or GIS-based models of varying complexity. The Dept of Civil and Environmental Engineering and Architecture at the University of Cagliari is carrying out a comprehensive activity of coastal flooding risk mapping at the regional scale within the framework of a scientific collaboration with the Sardinian Regional Authority for the Hydrographic District, that includes monitoring and scientific activities along the entire Sardinian coast. Bathymetry and topographical surveys, sediment characterization, waves and currents measurements, hydrodynamic and morphodynamic modelling are planned, focusing on critical extended areas. In this paper we present an overview of the entire activity programme and give an in-depth account of the ongoing monitoring survey of the dunal system of the Su Giudeu beach (Southern Sardinia, 50 km far from the city of Cagliari). Su Giudeu is a sandy, bay-shaped beach, extending for about 1200 m between two headlands, evolving under waves with a predominant direction of 220-240°N (Scirocco wind). The survey is expected to provide evidence of the response of the remarkable dunal system to wave runup occurring during storm events, to be used in the verification of existing numerical models of dune erosion.

  15. Resistance in Brazilian Streets: Beach in an Inland City

    OpenAIRE

    Franco, Juliana Rocha; Canuto, Frederico; Costa, Roberth Robson

    2016-01-01

    The purpose of this essay is to present the Praia da Estação (“Beach Station”) movement—an important occupation of public space in Belo Horizonte, Minas Gerais State, Brazil. A joyful protest, Praia da Estação was created in a decentralized and peaceful manner, in response to the top-down regulation set up by Mayor Márcio Lacerda in 2009, to regulate the use of Praça da Estação (“Square Station”). The idea of creating a beach in an inland city, where people would protest in swimsuits, asserts...

  16. Characterization of Beach/River Sand for Foundry Application

    Directory of Open Access Journals (Sweden)

    Katsina Christopher BALA

    2013-11-01

    Full Text Available A detailed experimental investigation is been reported on the characterization of beach/river sand for foundry use. Bulk properties of the sand samples collected were evaluated. The experimental results were analyzed as per the American Foundry Society (AFS standard. The analyses show that samples from Ughelli River, Warri River and Ethiope River could be used effectively in the foundry. The sample from Lagos bar beach requires to be sieved properly to remove the coarse fractions in order to make it suitable for foundry use.

  17. Swash zone characteristics at Ocean Beach, San Francisco, CA

    Science.gov (United States)

    Erikson, L.H.; Hanes, D.M.; Barnard, P.L.; Gibbs, A.E.

    2007-01-01

    Runup data collected during the summer of 2005 at Ocean Beach, San Francisco, CA are analyzed and considered to be typical summer swash characteristics at this site. Analysis shows that the beach was dissipative with Iribarren numbers between 0.05 and 0.4 and that infragravity energy dominated. Foreshore slopes were mild between 0.01 and 0.05 with swash periods on the order of a minute. Predicted runup heights obtained with six previously developed analytical runup formulae were compared to measured extreme runup statistics. Formulations dependent on offshore wave height, foreshore slope and deep water wavelength gave reasonable results.

  18. 76 FR 24813 - Safety Zone; Fourth Annual Offshore Challenge, Sunny Isles Beach, FL

    Science.gov (United States)

    2011-05-03

    ... Isles Beach, FL AGENCY: Coast Guard, DHS. ACTION: Temporary final rule. SUMMARY: The Coast Guard is establishing a temporary safety zone in the Atlantic Ocean east of Sunny Isles Beach, Florida for the Fourth... rulemaking (NPRM) entitled Safety Zone; Fourth Annual Offshore Challenge, Sunny Isles Beach, FL in the...

  19. 77 FR 64411 - Drawbridge Operation Regulations; Atlantic Intracoastal Waterway (AIWW), Wrightsville Beach, NC

    Science.gov (United States)

    2012-10-22

    ...), Wrightsville Beach, NC AGENCY: Coast Guard, DHS. ACTION: Notice of deviation from drawbridge regulation.... 74 Bridge across the Atlantic Intracoastal Waterway, mile 283.1, at Wrightsville Beach, NC. The... Intracoastal Waterway (AIWW) mile 283.1, at Wrightsville Beach, NC has a vertical clearance of 20 feet, above...

  20. 77 FR 64904 - Safety Zone, Atlantic Intracoastal Waterway; Carolina Beach, NC

    Science.gov (United States)

    2012-10-24

    ... Beach, NC AGENCY: Coast Guard, DHS. ACTION: Temporary final rule. SUMMARY: The Coast Guard is establishing a temporary safety zone on the waters of the Atlantic Intracoastal Waterway at Carolina Beach..., at Carolina Beach, North Carolina. The safety zone will temporarily restrict vessel movement within...

  1. 78 FR 2650 - Safety Zone, Atlantic Intracoastal Waterway; Wrightsville Beach, NC

    Science.gov (United States)

    2013-01-14

    ...; Wrightsville Beach, NC AGENCY: Coast Guard, DHS. ACTION: Notice of Proposed Rulemaking. SUMMARY: The Coast... Intracoastal Waterway at Wrightsville Beach, North Carolina. The safety zone is necessary to provide for the... Atlantic Intracoastal Waterway, mile 283.1, at Wrightsville Beach, North Carolina. The safety zone...

  2. 78 FR 22195 - Safety Zone; Atlantic Intracoastal Waterway; Wrightsville Beach, NC

    Science.gov (United States)

    2013-04-15

    ...; Wrightsville Beach, NC AGENCY: Coast Guard, DHS. ACTION: Temporary final rule. SUMMARY: The Coast Guard is... Wrightsville Beach, North Carolina. The safety zone is necessary to provide for the safety of mariners on... Waterway, mile 283.1, at Wrightsville Beach, North Carolina. The safety zone extension will temporarily...

  3. 77 FR 35898 - Safety Zone, Atlantic Intracoastal Waterway; North Topsail Beach, NC

    Science.gov (United States)

    2012-06-15

    ... Topsail Beach, NC AGENCY: Coast Guard, DHS. ACTION: Notice of proposed rulemaking. SUMMARY: The Coast... at North Topsail Beach, North Carolina. The safety zone will temporarily restrict vessel movement... Topsail Beach, North Carolina. DATES: Comments and related material must be received by the Coast Guard on...

  4. 78 FR 72022 - Drawbridge Operation Regulation; Atlantic Intracoastal Waterway, Wrightsville Beach, NC

    Science.gov (United States)

    2013-12-02

    ..., Wrightsville Beach, NC AGENCY: Coast Guard, DHS. ACTION: Notice of temporary deviation from regulations.... 74 Bridge, across the Atlantic Intracoastal Waterway (AICW), mile 283.1, at Wrightsville Beach, NC. This deviation ] is necessary to accommodate the 2014 Quintiles Wrightsville Beach Full and Half...

  5. 77 FR 56772 - Safety Zone; Water Main Crossing; Choctawhatchee Bay; Santa Rosa Beach, FL

    Science.gov (United States)

    2012-09-14

    ...; Santa Rosa Beach, FL AGENCY: Coast Guard, DHS. ] ACTION: Temporary final rule. SUMMARY: The Coast Guard... Choctawhatchee Bay, Santa Rosa Beach, FL. This action is necessary for the protection of persons and vessels, on... portion of GICW in Choctawhatchee Bay, Santa Rosa Beach, FL. This temporary safety zone is deemed...

  6. 78 FR 34579 - Safety Zone, Atlantic Intracoastal Waterway; Wrightsville Beach, NC

    Science.gov (United States)

    2013-06-10

    ...; Wrightsville Beach, NC AGENCY: Coast Guard, DHS. ACTION: Temporary final rule. SUMMARY: The Coast Guard is... Wrightsville Beach, North Carolina. The safety zone is necessary to provide for the safety of mariners on... Waterway, mile 283.1, at Wrightsville Beach, North Carolina. The safety zone extension will temporarily...

  7. 78 FR 56151 - Safety Zone, North Atlantic Ocean; Virginia Beach, VA

    Science.gov (United States)

    2013-09-12

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone, North Atlantic Ocean; Virginia Beach, VA... zone on the navigable waters of the North Atlantic Ocean in Virginia Beach, VA to support the Virginia... Delegation No. 0170.1. ] On September 12, 2013 the City of Virginia Beach will host a fireworks display...

  8. 76 FR 60729 - Special Local Regulations for Marine Events, Wrightsville Channel; Wrightsville Beach, NC

    Science.gov (United States)

    2011-09-30

    ..., Wrightsville Channel; Wrightsville Beach, NC AGENCY: Coast Guard, DHS. ACTION: Temporary final rule. SUMMARY: The Coast Guard is establishing temporary special local regulations for the swim portions of ``Beach 2 Battleship Full and Half Iron Distance Triathlon'', to be held on the waters adjacent to Wrightsville Beach...

  9. 76 FR 16297 - Drawbridge Operation Regulation; Cerritos Channel, Long Beach, CA

    Science.gov (United States)

    2011-03-23

    ... SECURITY Coast Guard 33 CFR Part 117 Drawbridge Operation Regulation; Cerritos Channel, Long Beach, CA... of the Commodore Schuyler F. Heim Drawbridge across Cerritos Channel, mile 4.9, at Long Beach, CA... Channel, at Long Beach, CA. The drawbridge navigation span provides a vertical clearance of 37 feet above...

  10. 78 FR 39599 - Safety Zone; Independence Day Fireworks, Kings Beach, CA

    Science.gov (United States)

    2013-07-02

    ... SECURITY Coast Guard 33 CFR Part 165 Safety Zone; Independence Day Fireworks, Kings Beach, CA AGENCY: Coast... safety zone for the Independence Day Fireworks, Kings Beach, CA in the Captain of the Port, San Francisco... Marina to the launch site off of Kings Beach, CA in approximate position 39 13'55'' N, 120 01'42'' W (NAD...

  11. 78 FR 6258 - Proposed Amendment of Class E Airspace; West Palm Beach, FL

    Science.gov (United States)

    2013-01-30

    ... Federal Aviation Administration 14 CFR Part 71 Proposed Amendment of Class E Airspace; West Palm Beach, FL...: This action proposes to amend Class E Airspace in the West ] Palm Beach, FL area, as new Standard Instrument Approach Procedures (SIAPs) have been developed at Palm Beach County Park Airport. Airspace...

  12. 77 FR 45488 - Safety Zone, Atlantic Intracoastal Waterway; North Topsail Beach, NC

    Science.gov (United States)

    2012-08-01

    ...; North Topsail Beach, NC AGENCY: Coast Guard, DHS. ACTION: Temporary final rule. SUMMARY: The Coast Guard... Topsail Beach, North Carolina. The safety zone is necessary to provide for the safety of mariners on..., mile 252.3, at North Topsail Beach, North Carolina. The safety zone will temporarily restrict vessel...

  13. 77 FR 30445 - Safety Zone, Atlantic Intracoastal Waterway; Wrightsville Beach, NC

    Science.gov (United States)

    2012-05-23

    ...; Wrightsville Beach, NC AGENCY: Coast Guard, DHS. ACTION: Notice of Proposed Rulemaking. SUMMARY: The Coast... at Wrightsville Beach, North Carolina. The safety zone will temporarily restrict vessel movement..., mile 283.1, at Wrightsville Beach, North Carolina. DATES: Comments and related material must be...

  14. 75 FR 15721 - Back Bay National Wildlife Refuge, City of Virginia Beach, VA

    Science.gov (United States)

    2010-03-30

    ... Fish and Wildlife Service Back Bay National Wildlife Refuge, City of Virginia Beach, VA AGENCY: Fish... will also hold public meetings in Virginia Beach, Virginia during the 30-day review period to receive... Back Bay NWR, 4005 Sandpiper Road, Virginia Beach, Virginia. U.S. Postal Service: Thomas Bonetti...

  15. 77 FR 69388 - Safety Zone; Water Main Crossing; Choctawhatchee Bay; Santa Rosa Beach, FL

    Science.gov (United States)

    2012-11-19

    ...; Santa Rosa Beach, FL AGENCY: Coast Guard, DHS. ACTION: Temporary final rule. SUMMARY: The Coast Guard... Choctawhatchee Bay, Santa Rosa Beach, FL. This action is necessary for the protection of persons and vessels, on... Choctawhatchee Bay, Santa Rosa Beach, FL. This temporary safety zone is deemed necessary to protect persons and...

  16. 77 FR 41911 - Safety Zone, Atlantic Intracoastal Waterway; Wrightsville Beach, NC

    Science.gov (United States)

    2012-07-17

    ...; Wrightsville Beach, NC AGENCY: Coast Guard, DHS. ACTION: Temporary final rule. SUMMARY: The Coast Guard is establishing a temporary safety zone on the waters of the Atlantic Intracoastal Waterway at Wrightsville Beach... Beach, North Carolina. DATES: This rule is effective from September 1, 2012 until May 1, 2013. ADDRESSES...

  17. 33 CFR 100.106 - Freeport Grand Prix, Long Beach, NY.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Freeport Grand Prix, Long Beach... Beach, NY. (a) Regulated area. The regulated area is a trapezoidal area on the coastal Atlantic waters of Long Island to the south of Long Beach, New York. The regulated area is one and one quarter (11/4...

  18. 33 CFR 80.160 - Montauk Point, NY to Atlantic Beach, NY.

    Science.gov (United States)

    2010-07-01

    ... Beach, NY. 80.160 Section 80.160 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND... to Atlantic Beach, NY. (a) A line drawn from the Shinnecock Inlet East Breakwater Light to Shinnecock... southernmost extremity of the spit of land at the western end of Oak Beach. (d) A line drawn from Jones Inlet...

  19. 77 FR 423 - Drawbridge Operation Regulations; Atlantic Intracoastal Waterway (AIWW), Wrightsville Beach, NC

    Science.gov (United States)

    2012-01-05

    ...), Wrightsville Beach, NC AGENCY: Coast Guard, DHS. ACTION: Notice of temporary deviation from regulations... regulations governing the operation of the S.R. 74 Bridge across the AIWW, mile 283.1, at Wrightsville Beach... structural repair of the bridge. The S.R. 74 Bridge across the AIWW mile 283.1, at Wrightsville Beach, NC has...

  20. 77 FR 38005 - Safety Zone; Independence Day Fireworks, Kings Beach, CA

    Science.gov (United States)

    2012-06-26

    ... SECURITY Coast Guard 33 CFR Part 165 Safety Zone; Independence Day Fireworks, Kings Beach, CA AGENCY: Coast... safety zone for the Kings Beach Independence Day Fireworks display from 7 a.m. until 10 p.m. on July 3... from Tahoe Keys Marina to the launch site off of Kings Beach, CA at position 39 13'55'' N, 120 01'42...

  1. 77 FR 50444 - Safety Zone, Atlantic Intracoastal Waterway; Carolina Beach, NC

    Science.gov (United States)

    2012-08-21

    ... Beach, NC AGENCY: Coast Guard, DHS. ACTION: Notice of Proposed Rulemaking. SUMMARY: The Coast Guard... Carolina Beach, North Carolina. The safety zone is necessary to provide for the safety of mariners on..., mile 295.6, at Carolina Beach, North Carolina. The safety zone will temporarily restrict vessel...

  2. 77 FR 51475 - Safety Zone; Apache Pier Labor Day Fireworks; Myrtle Beach, SC

    Science.gov (United States)

    2012-08-24

    ... Beach, SC AGENCY: Coast Guard, DHS. ACTION: Temporary final rule. SUMMARY: The Coast Guard is... Myrtle Beach, SC, during the Labor Day fireworks demonstration. This regulation is necessary to protect life and property on the navigable waters of the Atlantic Ocean off the coast of Myrtle Beach, SC...

  3. 77 FR 27624 - Drawbridge Operation Regulation; Cerritos Channel, Long Beach, CA

    Science.gov (United States)

    2012-05-11

    ... SECURITY Coast Guard 33 CFR Part 117 Drawbridge Operation Regulation; Cerritos Channel, Long Beach, CA.... Heim Drawbridge across Cerritos Channel, mile 4.9, at Long Beach, CA. The deviation is necessary to... Drawbridge, mile 4.9, over Cerritos Channel, at Long Beach, CA. The drawbridge navigation span provides a...

  4. 78 FR 23519 - Safety Zone; Atlantic Intracoastal Waterway; Wrightsville Beach, NC

    Science.gov (United States)

    2013-04-19

    ...; Wrightsville Beach, NC AGENCY: Coast Guard, DHS. ACTION: Notice of Proposed Rulemaking. SUMMARY: The Coast... ] Intracoastal Waterway at Wrightsville Beach, North Carolina. The safety zone is necessary to provide for the... Atlantic Intracoastal Waterway, mile 283.1, at Wrightsville Beach, North Carolina. The safety zone...

  5. 78 FR 22814 - Special Local Regulations; Miami Super Boat Grand Prix, Atlantic Ocean; Miami Beach, FL

    Science.gov (United States)

    2013-04-17

    ..., Atlantic Ocean; Miami Beach, FL AGENCY: Coast Guard, DHS. ACTION: Notice of proposed rulemaking. SUMMARY... Miami Beach, Florida during the Miami Super Boat Grand Prix. The Miami Super Boat Grand Prix will... Beach, Florida. Approximately 25 high- speed power boats will be participating in the races, and it is...

  6. 33 CFR 334.930 - Anaheim Bay Harbor, Calif.; Naval Weapons Station, Seal Beach.

    Science.gov (United States)

    2010-07-01

    ... Weapons Station, Seal Beach. 334.930 Section 334.930 Navigation and Navigable Waters CORPS OF ENGINEERS... Bay Harbor, Calif.; Naval Weapons Station, Seal Beach. (a) The restricted area. The water of Anaheim Bay Harbor between the east and west jetties at the United States Naval Weapons Station, Seal Beach...

  7. 36 CFR 3.17 - What regulations apply to swimming areas and beaches?

    Science.gov (United States)

    2010-07-01

    ... swimming areas and beaches? 3.17 Section 3.17 Parks, Forests, and Public Property NATIONAL PARK SERVICE, DEPARTMENT OF THE INTERIOR BOATING AND WATER USE ACTIVITIES § 3.17 What regulations apply to swimming areas and beaches? (a) The superintendent may designate areas as swimming areas or swimming beaches in...

  8. Linkages between sediment composition, wave climate and beach profile variability at multiple timescales

    NARCIS (Netherlands)

    Karunarathna, Harshinie; Horrillo-Caraballo, Jose; Kuriyama, Yoshiaki; Mase, Hajime; Ranasinghe, Roshanka; Reeve, Dominic E.

    2016-01-01

    The paper analyses, compares and contrasts cross-shore morphodynamic behaviour of four diverse beaches that have very different regional settings, wave climates and sediment characteristics, with the aid of rarely available long term measurements of beach profiles and incident waves. The beaches

  9. Gone to the Beach — Using GIS to infer how people value ...

    Science.gov (United States)

    Estimating the non-market value of beaches for saltwater recreation is complex. An individual’s preference for a beach depends on their perception of beach characteristics. When choosing one beach over another, an individual balances these personal preferences with any additional costs including travel time and/or fees to access the beach. This trade-off can be used to infer how people value different beach characteristics; especially when beaches are free to the public, beach value estimates rely heavily on accurate travel times. A current case study focused on public access on Cape Cod, MA will be used to demonstrate how travel costs can be used to determine the service area of different beaches, and model expected use of those beaches based on demographics. We will describe several of the transportation networks and route services available and compare a few based on their ability to meet our specific requirements of scale and seasonal travel time accuracy. We are currently developing a recreational demand model, based on visitation data and beach characteristics, that will allow decision makers to predict the benefits of different levels of water quality improvement. An important part of that model is the time required for potential recreation participants to get to different beaches. This presentation will describe different ways to estimate travel times and the advantages/disadvantages for our particular application. It will go on to outline how freely a

  10. grain size analysis of beach sediment along the barrier bar lagoon

    African Journals Online (AJOL)

    PROF EKWUEME

    along the beaches are hence a result of complex interaction between sediment source, wave energy level and the general offshore slope on which the beach is constructed. The intensity of the wave action in the littoral zone generally redeposits and sort materials of all grain sizes. Thus, the composition of beach sediment is.

  11. 77 FR 28243 - Amendment of Class D Airspace; Cocoa Beach, FL

    Science.gov (United States)

    2012-05-14

    ...-0099; Airspace Docket No. 12-ASO-11] Amendment of Class D Airspace; Cocoa Beach, FL AGENCY: Federal... Federal Register on April 11, 2012 that amends Class D airspace at Cocoa Beach, FL. DATES: Effective 0901...), amends Class D airspace at Cape Canaveral Skid Strip, Cocoa Beach, FL. A typographical error was made in...

  12. 77 FR 21662 - Amendment of Class D Airspace; Cocoa Beach, FL

    Science.gov (United States)

    2012-04-11

    ...-0099; Airspace Docket No. 12-ASO-11] Amendment of Class D Airspace; Cocoa Beach, FL AGENCY: Federal... Class D airspace at Cape Canaveral Skid Strip, Cocoa Beach, FL, by correcting the geographic coordinates... of Cape Canaveral Skid Strip, Cocoa Beach, FL. Also, the geographic coordinates for the airport need...

  13. the major cause of observed erosion surge on the beaches north

    African Journals Online (AJOL)

    Mgina

    They branch into a shallower channel, 10 m deep, that passes between the coastline and Pangavini. These channels may be important in directing offshore waves. ... Beach erosion along Kunduchi beach, north of Dar Es Salaam. Msasani Bay to. Bahari Beach. Hotel. National. Environment. Management. Council. 1997-99.

  14. 78 FR 11094 - Safety Zone; Lake Worth Dredge Operations, Lake Worth Inlet; West Palm Beach, FL

    Science.gov (United States)

    2013-02-15

    ... 1625-AA00 Safety Zone; Lake Worth Dredge Operations, Lake Worth Inlet; West Palm Beach, FL AGENCY... safety zone on Lake Worth Inlet, West Palm Beach, Florida, to provide for the safety of life and vessels..., dredging operations will be conducted on Lake Worth Inlet in West Palm Beach, Florida. These operations...

  15. 78 FR 22193 - Special Local Regulations; West Palm Beach Triathlon Championship, Intracoastal Waterway; West...

    Science.gov (United States)

    2013-04-15

    ...-AA08 Special Local Regulations; West Palm Beach Triathlon Championship, Intracoastal Waterway; West Palm Beach, FL AGENCY: Coast Guard, DHS. ACTION: Temporary Final Rule. SUMMARY: The Coast Guard is establishing a special local regulation on the Intracoastal Waterway, in West Palm Beach, Florida, during the...

  16. 33 CFR 110.185 - Atlantic Ocean, off the Port of Palm Beach, FL.

    Science.gov (United States)

    2010-07-01

    ... Palm Beach, FL. 110.185 Section 110.185 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF... of Palm Beach, FL. (a) The anchorage grounds. (1) Anchorage A. The waters lying within an area... Palm Beach, shall only anchor within the anchorage areas hereby defined and established, except in...

  17. 78 FR 25383 - Amendment of Class E Airspace; West Palm Beach, FL

    Science.gov (United States)

    2013-05-01

    ...-0922; Airspace Docket No. 12-ASO-38] Amendment of Class E Airspace; West Palm Beach, FL AGENCY: Federal... West Palm Beach, FL area, as new Standard Instrument Approach Procedures (SIAPs) have been developed at Palm Beach County Park Airport. Airspace reconfiguration is necessary for the continued safety and...

  18. 77 FR 63722 - Special Local Regulations; Palm Beach World Championship, Atlantic Ocean; Jupiter, FL

    Science.gov (United States)

    2012-10-17

    ...-AA08 Special Local Regulations; Palm Beach World Championship, Atlantic Ocean; Jupiter, FL AGENCY... offshore of Jupiter, Florida during the Palm Beach World Championship, a high speed power boat race. The Palm Beach World Championship is scheduled to take place on Friday, October 19, and Sunday, October 21...

  19. Surfin’ California with Whitman and The Beach Boys

    DEFF Research Database (Denmark)

    Balle, Søren Hattesen

    of American literary Romanticism, whereas The Beach Boys became the sixties’ most well-known pop icon of surf music and surf culture. Nevertheless, their common interest in California as a particular topographic image of the American West invites comparison and further study. This paper aims to make...

  20. Organisms associated with the sandy-beach bivalve Donax serra ...

    African Journals Online (AJOL)

    Examination of two collections of Donax serra from a South African west coast beach revealed the presence of Ciliophora, Trematoda, Nematoda and a parasitic pycnogonid. This is the first record of a pycnogonid from the genus Donax and the first published report of such a parasite from any southern African bivalve ...

  1. Highly Valued Degrees at California State University, Long Beach

    Science.gov (United States)

    Dowell, David A.

    2016-01-01

    In 2014, California State University, Long Beach (CSULB) received the national award from the American Association of State Colleges and Universities (AASCU) for Excellence and Innovation in Student Success and Completion, recognizing record high graduation rates with a diverse student population, significantly above comparable institutions.…

  2. Evaluating the radiological health compliance of some beach ...

    African Journals Online (AJOL)

    Beaches constitute recreational and resort centres in the environment of which radiation is part. With respect to radiation protection practice, the International Radiation Protection bodies from time to time recommend certain exposure limits for different environments. In this study, a Raderlert 100 radiation meter was used to ...

  3. Beach litter sourcing: A trawl along the Northern Ireland coastline.

    Science.gov (United States)

    Williams, A T; Randerson, P; Allen, C; Cooper, J A G

    2017-09-15

    Fourteen non-recreational coastal locations in Northern Ireland were investigated as to whether beach litter deposition was related to seasonal or site specific factors. Litter items were counted in 100m width transects and 1km strand-line surveys over a five-season period (autumn to autumn). Survey sites comprised fishing ports; estuarine areas, north (high energy) and east coast (low energy) beaches. Fishing ports accumulated the most litter. In the 100m beach surveys, plastics, string and cord, bottle caps, food items, rope, and drink containers dominated. In strand-line surveys, large plastic pieces were dominant, followed by rope, string and cord, strapping bands (absent on beach surveys), cloth, wood (mainly pallets, fish boxes) and metal items. Multivariate analyses revealed major litter category differences between the ports and all other sites, with a lesser distinction between exposed and estuarine sites. There was no simple coastline trend and no apparent effect of seasonality between samples. Copyright © 2017 Elsevier Ltd. All rights reserved.

  4. The investigation of radionuclides distributions in beach sand by ...

    African Journals Online (AJOL)

    A transportable and robust gamma ray detection system (GISPI) was employed to determine the concentrations of naturally occurring radionuclides on various beaches in and around Saldanha Bay, located on the West Coast of South Africa. Several mathematical techniques were applied to obtain GIS overlay that could be ...

  5. Short Communication Energy and ash contents of sandy beach ...

    African Journals Online (AJOL)

    should be the percentage of calcium carbonate of the total body weight. Countering the above tendency, however, is one of the limiting factors in exoskeletons, namely, their increasing weakness with size (Currey 1970). Thus in large crustaceans. Table 4 Percentage ash contents of sandy beach species. Species.

  6. Kinematics of waves propagating and breaking on a barred beach

    NARCIS (Netherlands)

    Michallet, H.; Cienfuegos, R.; Barthélemy, E.; Grasso, F.R.

    2011-01-01

    Laboratory experiments are conducted in a wave facility with a loose sediment beach in order to estimate the wave characteristics needed for sediment transport modeling. A roller model and a Boussinesq-type model are used for comparing and discussing the experimental results. It is shown that the

  7. Economic valuation of illegal fishing: An empirical study of beach ...

    African Journals Online (AJOL)

    Beach seining was banned in Kenya in 2001 largely due to growth overfishing. To-date compliance to this regulation remains a challenge to managers and policy makers. This paper analyses enforcement records in Lake Victoria between 2001 and 2012 and applies the model of rational criminality to estimate the economic ...

  8. Plastics Distribution and Degradation on Lake Huron Beaches

    Science.gov (United States)

    Zbyszewski, M.; Corcoran, P.

    2009-05-01

    The resistivity of plastic debris to chemical and mechanical weathering processes poses a serious threat to the environment. Numerous marine beaches are littered with plastic fragments that entangle and become ingested by organisms including birds, turtles and plankton. Although many studies have been conducted to determine the amount and effects of plastics pollution on marine organisms, relatively little is known about the distribution and quantity of polymer types along lacustrine beaches. Plastic particles sampled from selected beaches on Lake Huron were analyzed using Fourier Transform Infrared Spectroscopy (FTIR) to determine polymer composition. The majority of the plastic fragments are industrial pellets composed of polypropylene and polyethylene. Varying degrees of oxidation are indicated by multiple irregular peaks in the lower wavenumber region on the FTIR spectra. The oxidized pellets also represent the plastic particles with the most pronounced surface textures, as identified using Scanning Electron Microscopy (SEM). Crazes and flakey, fibrous, or granular textures are consistent with chemical weathering processes, whereas gauges and pits occur through abrasion during mechanical weathering. Further textural and compositional analysis will indicate which polymer types are more resistant to weathering processes. Additional investigation of the distribution of plastic debris along the beaches of Lake Huron will indicate the amount and primary transport directions of resistant plastic debris polluting one of Ontario's Great Lakes.

  9. Patterns of species richness in sandy beaches of South America

    African Journals Online (AJOL)

    Instituto de Zoologia, Universidad Austral de Chile, Valdivia, Chile. Received 22 Occobcr 1993; accepted 19 Jan.uary 1994. Species richness of the intertidal macroinfauna of exposed sandy beaches around South America is reviewed in relation to geographic location. This macrolnfauna is dominated by drolanid isopods ...

  10. Sediment budget of a portion of Trivandrum beach (Kerala)

    Digital Repository Service at National Institute of Oceanography (India)

    Varma, P.U.; RamaRaju, V.S.; Pylee, A.; Swamy, G.N.

    to be deposited back when the erosion phase is over. Eventhough a net loss has been noticed during the period of study, it is considered not very significant from the point of view of long-term changes which the beach may undergo...

  11. Effectiveness of the Call in Beach Volleyball Attacking Play

    Directory of Open Access Journals (Sweden)

    Künzell Stefan

    2014-12-01

    Full Text Available In beach volleyball the setter has the opportunity to give her or his hitter a “call”. The call intends that the setter suggests to her or his partner where to place the attack in the opponent’s court. The effectiveness of a call is still unknown. We investigated the women’s and men’s Swiss National Beach Volleyball Championships in 2011 and analyzed 2185 attacks. We found large differences between female and male players. While men called in only 38.4% of attacks, women used calls in 85.5% of attacks. If the male players followed a given call, 63% of the attacks were successful. The success rate of attacks without any call was 55.8% and 47.6% when the call was ignored. These differences were not significant (χ2(2 = 4.55, p = 0.103. In women’s beach volleyball, the rate of successful attacks was 61.5% when a call was followed, 35% for attacks without a call, and 42.6% when a call was ignored. The differences were highly significant (χ2(2 = 23.42, p < 0.0005. Taking into account the findings of the present study, we suggested that the call was effective in women’s beach volleyball, while its effect in men’s game was unclear. Considering the quality of calls we indicate that there is a significant potential to increase the effectiveness of a call.

  12. Evaluating the Radiological Health Compliance of some Beach ...

    African Journals Online (AJOL)

    ADOWIE PERE

    environments. In this study, a Raderlert 100 radiation meter was used to measure the gamma radiation levels in four beaches in Delta State, Nigeria. The purpose is to ... about the waste axis, is also the region of the highly radiosensitive gonads in .... Protection Agency (FEPA), the Nigeria Nuclear. Regulatory Agency ...

  13. Modeling the Movement of Beach Alluvia in the Alongshore Direction

    Directory of Open Access Journals (Sweden)

    Elena V. Bondareva

    2014-06-01

    Full Text Available The authors have worked out a design model for the dynamics of a mixed-composition beach in the vicinity of transverse structures. The model uses a modified formula for calculating alluvia, which is based on modified energy dependencies. The authors provide an algorithm for performing these calculations.

  14. Spectral signatures for swash on reflective, intermediate and dissipative beaches

    DEFF Research Database (Denmark)

    Hughes, Michael G; Aagaard, Troels; Baldock, Tom E

    2014-01-01

    energy level compared to a relatively minor variation in the short-wave swash energy level. A universally common feature of spectra from all beach-states was an f− 4energy roll-off in the short-wave frequency band. In contrast to the broadly uniform appearance of the short-wave frequency band...... energy level. This extension of the beach-state model to include the swash zone leads to the following propositions for morphodynamic controls on the nature of the swash spectrum. (1) The short-wave part of the swash spectrum is relatively constant in form across all beach-states (f− 4 energy roll-off...... (reflective, intermediate and dissipative), with beach gradients ranging from approximately 1:6 to 1:60 exposed to offshore significant wave heights of 0.5–3.0 m. The ratio of swash energy in the short-wave (f > 0.05 Hz) to long-wave (f

  15. A simplified model of pathogenic pollution for managing beaches ...

    African Journals Online (AJOL)

    Existing models for urban runoff water quality and dispersion in the coastal zone are cumbersome for application to everyday management of beach use. A simplified model is therefore proposed and tested using a case study. The model captures the key physical processes involved in mixing and dispersion of pathogenic ...

  16. Modeling Swash zone sediment transport at Truc Vert beach

    NARCIS (Netherlands)

    Van Rooijen, A.; Reniers, A.; Van Thiel de Vries, J.S.M.; Blenkinsopp, C.; McCall, R.

    2012-01-01

    A one-dimensional hydrostatic version of the XBeach model (Roelvink et al., 2009) is applied to hindcast swash morphodynamics measured during an accretive, and an erosive tide at Le Truc Vert beach (France) in early spring 2008 (Masselink et. al, 2009; Blenkinsopp et al., 2011). Swash hydrodynamics

  17. Geochemistry of dark coastal heavy-mineral beaches sand (Annaba ...

    African Journals Online (AJOL)

    Acer

    correlation between the concentration of major, traces and REE elements and the amount of heavy and especially metamorphic minerals like garnet, staurolite, tourmaline and epidote. Key words: Heavy minerals- Major - Trace element – REE- Sand-Beach. * Corresponding Author: Chemam.asma@gmail.com ...

  18. Aggregations of the sandy-beach isopod, Tylos granulatus ...

    African Journals Online (AJOL)

    ... lives as a scavenger in the intertidal zone of sandy beaches on the west coast of South Africa. Individuals emerge with the receding tide leaving exit holes, then forage for about two hours before returning to the vicinity of the high-water mark where they aggregate to bury themselves, leaving behind cone-shaped mounds.

  19. Migrations of sandy beach meiofauna | McLachlan | African Zoology

    African Journals Online (AJOL)

    The meiofauna at higher tide levels on a sheltered beach has been found to undergo vertical migrations correlated with the alternate drying and wetting of the sand during the tidal cycle. This movement may be modified by temperature differences between summer and winter and day and night. No major horizontal ...

  20. The investigation of radionuclides distributions in beach sand by ...

    African Journals Online (AJOL)

    The investigation of radionuclides distributions in beach sand by means of GIS techniques. ... The PDF file you selected should load here if your Web browser has a PDF reader plug-in installed (for example, a recent version of Adobe Acrobat Reader). If you would like more information about how to print, save, and work ...

  1. HEART RATE AND MOTION ANALYSIS BY GPS IN BEACH SOCCER

    Directory of Open Access Journals (Sweden)

    Julen Castellano

    2010-03-01

    Full Text Available Although beach soccer has become increasingly popular in recent years very little scientific research has been conducted into the sport. A pilot study was carried out with the aim of examining the physiological (heart rate and physical (motion analysis responses of beach soccer players during competitive matches. Ten players (age 25.5 ± 0.5 years; height 1.80 ± 0.08 m; weight 78.2 ± 5.6 kg. were studied over five beach soccer matches. The physiological demands were analysed by measuring heart rate (HR using telemetric devices, while the physical profile was evaluated by recording motion and speed by means of GPS devices. During competitive matches, players obtained a HRmean of 165.2 bpm (86.5% HRmax, with 59.3% of the time participating (TP corresponding to values above 90% of the HRmax. The distance covered per minute of participation was 97.7 m, with 9.5% of this distance corresponding to high-intensity running and 2.5% to sprint; the work:rest ratio was 1.4:1 and the maximum speed 21.7 km·h-1. These results showed that beach soccer is an intermittent physical activity of greater intensity than other team games. It requires a major contribution from the anaerobic system as emphasis is placed on players making quick bursts of high-intensity activity separated by brief rest periods

  2. Influence of Tourist Pressure on Beach Litter and Microbial Quality ...

    African Journals Online (AJOL)

    Sam Eshun

    especially in areas where the adjacent communities do not have adequate toilet facilities. With tidal cycles, these deposits are washed into the sea and degrade the quality of the water. There is also direct sewage disposal into the sea (Nunoo & Evans, 2007), which can cause health hazard to both the users of the beach.

  3. Meiofauna of some sandy beaches of Andaman Islands

    Digital Repository Service at National Institute of Oceanography (India)

    Ansari, Z.A.; Ingole, B.S.

    Comparatively high meiofauna numbers were recorded from beaches having fine sand particles than those having coarse to medium sand particles The fauna was dominated mainly by nematodes (53.7%), harpacticoids (13.7%) and polychaetes (12.8%) On all...

  4. March 1977 Sandy beaches are unstable, often very exposed ...

    African Journals Online (AJOL)

    CROFAUNA AND MEIOFAUNA OF FOUR SANDY BEACHES. 293. 1977). Soft bodied forms were not abundant. Oligocbaets never reached high numbers but are nevertheless important because of their relatively IalJe size (Giere 1975). The 'others' category was dominated by turbellarians. followed by annelids and nauplii ...

  5. The ecology of sandy beaches in southern Africa

    African Journals Online (AJOL)

    culation patterns and macrofaunal food sources in deter- mining beach trophic structure is emphasized. S. Afr. J. Zool.1981, 16: 219-231. 'n Aigemene ekologiese opname van die sandstrande van die suidkus van suidelike Afrika het die verspreiding en getalle van makrofauna en meiofauna kwantitatief bepaal. Opnames.

  6. The effects of large beach debris on nesting sea turtles

    Science.gov (United States)

    Fujisaki, Ikuko; Lamont, Margaret M.

    2016-01-01

    A field experiment was conducted to understand the effects of large beach debris on sea turtle nesting behavior as well as the effectiveness of large debris removal for habitat restoration. Large natural and anthropogenic debris were removed from one of three sections of a sea turtle nesting beach and distributions of nests and false crawls (non-nesting crawls) in pre- (2011–2012) and post- (2013–2014) removal years in the three sections were compared. The number of nests increased 200% and the number of false crawls increased 55% in the experimental section, whereas a corresponding increase in number of nests and false crawls was not observed in the other two sections where debris removal was not conducted. The proportion of nest and false crawl abundance in all three beach sections was significantly different between pre- and post-removal years. The nesting success, the percent of successful nests in total nesting attempts (number of nests + false crawls), also increased from 24% to 38%; however the magnitude of the increase was comparably small because both the number of nests and false crawls increased, and thus the proportion of the nesting success in the experimental beach in pre- and post-removal years was not significantly different. The substantial increase in sea turtle nesting activities after the removal of large debris indicates that large debris may have an adverse impact on sea turtle nesting behavior. Removal of large debris could be an effective restoration strategy to improve sea turtle nesting.

  7. 75 FR 81637 - Endangered and Threatened Wildlife and Plants; Notice of Availability of the St. Andrew Beach...

    Science.gov (United States)

    2010-12-28

    ... of the primary and secondary dunes) and adjacent inland scrub dunes within the coastal ecosystem... erosion to beach mouse habitat. (c) Impact of artificial lighting on beach mouse habitat. (d) Control of... erosion to beach mouse habitat. (c) Impact of artificial lighting on beach mouse habitat. (d) Control of...

  8. 75 FR 53370 - RailAmerica, Inc., Palm Beach Holding, Inc., RailAmerica Transportation Corp., Central Railroad...

    Science.gov (United States)

    2010-08-31

    ...., Palm Beach Holding, Inc., RailAmerica Transportation Corp., Central Railroad Company of Indianapolis... requirements of 49 U.S.C. 11323-25, for RailAmerica, Inc. (RailAmerica); Palm Beach Holding, Inc. (Palm Beach... Acquisition, RailAmerica, Palm Beach, and RTC will indirectly control DTC, because Fortress's noncarrier...

  9. Data on nearshore wave process and surficial beach deposits, central Tamil Nadu coast, India.

    Science.gov (United States)

    Joevivek, V; Chandrasekar, N

    2017-08-01

    The chronicles of nearshore morphology and surficial beach deposits provide valuable information about the nature of the beach condition and the depositional environment. It imparts an understanding about the spatial and temporal relationship of nearshore waves and its influence over the distribution of beach sediments. This article contains data about wave and sediment dynamics of the ten sandy beaches along the central Tamil Nadu coast, India. This present dataset comprises nearshore wave parameters, breaker wave type, beach morphodynamic state, grain size distribution and weight percentage of heavy and light mineral distribution. The dataset will figure out the beach morphology and hydrodynamic condition with respect to the different monsoonal season. This will act as a field reference to realize the coastal dynamics in an open sea condition. The nearshore entities were obtained from the intensive field survey between January 2011 and December 2011, while characteristics of beach sediments are examined by the chemical process in the laboratory environment.

  10. Data on nearshore wave process and surficial beach deposits, central Tamil Nadu coast, India

    Directory of Open Access Journals (Sweden)

    V. Joevivek

    2017-08-01

    Full Text Available The chronicles of nearshore morphology and surficial beach deposits provide valuable information about the nature of the beach condition and the depositional environment. It imparts an understanding about the spatial and temporal relationship of nearshore waves and its influence over the distribution of beach sediments. This article contains data about wave and sediment dynamics of the ten sandy beaches along the central Tamil Nadu coast, India. This present dataset comprises nearshore wave parameters, breaker wave type, beach morphodynamic state, grain size distribution and weight percentage of heavy and light mineral distribution. The dataset will figure out the beach morphology and hydrodynamic condition with respect to the different monsoonal season. This will act as a field reference to realize the coastal dynamics in an open sea condition. The nearshore entities were obtained from the intensive field survey between January 2011 and December 2011, while characteristics of beach sediments are examined by the chemical process in the laboratory environment.

  11. Linking social drivers of marine debris with actual marine debris on beaches.

    Science.gov (United States)

    Slavin, Chris; Grage, Anna; Campbell, Marnie L

    2012-08-01

    The drivers (social) and pressures (physical) of marine debris have typically been examined separately. We redress this by using social and beach surveys at nine Tasmanian beaches, across three coastlines and within three categories of urbanisation, to examine whether people acknowledge that their actions contribute to the issue of marine debris, and whether these social drivers are reflected in the amount of marine debris detected on beaches. A large proportion (75%) of survey participants do not litter at beaches; with age, gender, income and residency influencing littering behaviour. Thus, participants recognise that littering at beaches is a problem. This social trend was reflected in the small amounts of debris that were detected. Furthermore, the amount of debris was not statistically influenced by the degree of beach urbanisation, the coastline sampled, or the proximity to beach access points. By linking social and physical aspects of this issue, management outcomes can be improved. Copyright © 2012 Elsevier Ltd. All rights reserved.

  12. Beach Soccer Injuries During the Japanese National Championships.

    Science.gov (United States)

    Shimakawa, Tomoyuki; Shimakawa, Yusuke; Kawasoe, Yoko; Yoshimura, Kouji; Chinen, Yuma; Eimon, Kazuya; Chibana, Wataru; Shirota, Shinichi; Kadekawa, Kei; Bahr, Roald; Uezato, Tomomi; Ikeda, Hiroshi

    2016-01-01

    The frequency and severity of injury in beach soccer are unknown. To estimate the incidence rates, characteristics, and risk factors for injuries associated with beach soccer. Cohort study; Level of evidence, 3. The same sports physician examined and recorded injuries incurred during the Japanese National Beach Soccer Championships in 2013 and 2014. Posttournament follow-up was made for all injuries. Match exposure for each player was recorded through video review to examine individual risk factors. A total of 58 injuries were recorded during 54 matches. The overall injury rate was 179.0 (95% CI, 138.4-231.6), and the time-loss injury rate was 28.2 (95% CI, 14.7-54.1) per 1000 player-hours. The foot/toe (34.9%) was the most frequently injured area, followed by the lower leg (22.2%) and thigh (11.1%). There was only 1 ankle injury (1.6%). The most frequent injury type was contusions (60.3%), followed by lacerations/abrasions (14.3%) and sprains/ligament injuries (6.3%). Only 4 injuries resulted in ≥30 days of time-loss (7.4%). After adjusting for age, a previous history of severe injury and longer experience of beach soccer were significantly associated with injury risk. The time-loss injury rate in this study was comparable to the rates reported during the matches of soccer or futsal tournaments. However, a greater incidence of foot/toe injury and lacerations/abrasions as well as a lower incidence of ankle injury distinguished beach soccer from soccer and futsal, possibly related to the specific playing conditions of being barefoot on a sand surface.

  13. 78 FR 33969 - Special Local Regulations; Daytona Beach Grand Prix of the Sea, Atlantic Ocean; Daytona Beach, FL

    Science.gov (United States)

    2013-06-06

    ... through Sunday, June 14-16, 2013, Powerboat P1-USA will host the Daytona Beach Grand Prix of the Sea, a... private sector of $100,000,000 (adjusted for inflation) or more in any one year. Though this rule will not...

  14. Beach ridge sedimentology: field observation and palaeoenvironmental interpretation for Anegada Island, British Virgin Islands.

    Science.gov (United States)

    Cescon, Anna Lisa; Cooper, J. Andrew G.; Jackson, Derek W. T.

    2014-05-01

    Beach ridge landforms have been observed in different environments and in settings that range from polar to tropical. Their stratigraphy and sedimentology has received a limited amount of discussion in the literature (Tamura, 2012). In coastal geomorphology a beach ridge can be seen as a transitional deposit between onshore and offshore environments. They are regarded as representing high level wave action along a coastline. In the Caribbean the origin of beach ridges has been variously attributed to one of three extreme wave events: extreme swell, extreme storm or tsunami waves. Beach ridges are arranged in beach ridge plains where there is succession of the landforms and can be several kilometres long. Beach ridge accumulation is not continuous and the coast shows alternating accretion and erosion periods. The use of beach ridges as palaeostorm archives is therefore not straightforward. The temporal continuity of beach ridge formation is being assessed on the beach ridge plains of Anegada, British Virgin Islands (Lesser Antilles). This carbonate platform surrounded by a fringing reef contains two beach ridge plains. There are more than 30 ridges in the Atlantic facing- coast and around 10 in the south, Caribbean- facing coast. The sediments of the modern beaches are dominated by the sand fraction and are 100% biogenic origin due to the isolation of Anegada from terrestrial sediment sources. The beach ridge sections have been studied in different area of Anegada beach ridge plains and present low angle seaward-dipping bedding. The sand fraction is dominant in the stratigraphy with a few intact shells. At only one site were coral pebbles deposited in association with the sand fraction. Aeolian deposits represent the upper part of the beach ridges and reflect the stabilization of the beach ridges with ongoing accretion. The sedimentology of the contemporary beach and dunes will be discussed in terms of their implications for understanding beach ridge genesis and its

  15. Short- and medium-term response to storms on three Mediterranean coarse-grained beaches

    Science.gov (United States)

    Grottoli, Edoardo; Bertoni, Duccio; Ciavola, Paolo

    2017-10-01

    The storm response of three Italian coarse-grained beaches was investigated to better understand the morphodynamics of coarse-clastic beaches in a microtidal context. Two of the studied sites are located on the eastern side of the country (Portonovo and Sirolo) and the third one (Marina di Pisa) is on the western side. Portonovo and Sirolo are mixed sand and gravel beaches where the storms approach from two main directions, SE and NE. Marina di Pisa is a coarse-grained, gravel-dominated beach, exposed to storms driven by SW winds. Gravel nourishments were undertaken in recent years on the three sites. Beach topography was monitored measuring the same network of cross sections at a monthly (i.e. short-term) to seasonal frequency (i.e. medium-term). Geomorphic changes were examined before and after storm occurrences by means of profile analyses and shoreline position evaluations. The beach orientation and the influence of hard structures are the main factors controlling the transport and accumulation of significant amount of sediments and the consequent high variability of beach morphology over the medium-term. For Marina di Pisa, storms tend to accumulate material towards the upper part of the beach with no shoreline rotation and no chance to recover the initial configuration. Sirolo and Portonovo showed a similar behaviour that is more typical of pocket beaches. Both beaches show shoreline rotation after storms in a clockwise or counter-clockwise direction according to the incoming wave direction. The wider and longer beach at Sirolo allows the accumulation of a thin layer of sediment during storms, rather than at Portonovo where, given its longshore and landward boundaries, the beach material tends to accumulate in greater thickness. After storms, Sirolo and especially Portonovo can quickly recover the initial beach configuration, as soon as another storm of comparable energy approaches from the opposite direction of the previous one. Large morphological

  16. Metal concentration in the tourist beaches of South Durban: An industrial hub of South Africa.

    Science.gov (United States)

    Vetrimurugan, E; Shruti, V C; Jonathan, M P; Roy, Priyadarsi D; Kunene, N W; Villegas, Lorena Elizabeth Campos

    2017-04-15

    South Durban basin of South Africa has witnessed tremendous urban, industrial expansion and mass tourism impacts exerting significant pressure over marine environments. 43 sediment samples from 7 different beaches (Bluff beach; Ansteys beach; Brighton beach; Cutting beach; Isipingo beach; Tiger Rocks beach; Amanzimtoti beach) were analyzed for acid leachable metals (ALMs) Fe, Mg, Mn, Cr, Cu, Mo, Ni, Co, Pb, Cd, Zn and Hg. The metal concentrations found in all the beaches were higher than the background reference values (avg. in μgg -1 ) for Cr (223-352), Cu (27.67-42.10), Mo (3.11-4.70), Ni (93-118), Co (45.52-52.44), Zn (31.26-57.01) and Hg (1.13-2.36) suggesting the influence of industrial effluents and harbor activities in this region. Calculated geochemical indexes revealed that extreme contamination of Cr and Hg in all the beach sediments and high Cr and Ni levels poses adverse biological effects. Copyright © 2017 Elsevier Ltd. All rights reserved.

  17. Ankle-brachial blood pressure differences in the beach-chair position of the shoulder surgery.

    Science.gov (United States)

    Choi, Jae Chan; Lee, Jong-Hyuk; Lee, Young-Don; Kim, Soon Yul; Chang, Sei-Jin

    2012-12-01

    During shoulder surgery, blood pressure is frequently measured at the ankle. Anesthetic complications may result when ankle blood pressure is higher than brachial blood pressure and anesthesiologists misinterpret ankle blood pressure as brachial blood pressure. Therefore, we investigated whether ankle blood pressure is significantly higher than brachial blood pressure before anesthesia induction, during induction, after tracheal intubation, before beach chair position, and in the beach chair position. Thirty patients requiring general anesthesia for shoulder surgery were included in this study. Ankle and brachial blood pressure were simultaneously measured before induction, during induction, after intubation, before beach chair position, and in the beach chair position. Ankle blood pressure was higher than brachial blood pressure before induction, during induction, after intubation, before beach chair position, and in the beach chair position. Ankle-brachial blood pressure differences in the beach chair condition were much higher than in four other conditions. The correlation coefficient between mean ankle-brachial blood pressure differences before the beach chair position and mean ankle-brachial blood pressure differences in the beach chair position was 0.616. Brachial systolic blood pressure could be predicted by regression equations (R(2) = 0.306-0.771). These results suggest that anesthesiologists should consider these ankle-brachial blood pressure differences when monitoring anesthesia in the beach chair position.

  18. Family on the beach : Representations of romantic and bourgeois family values by realistic genre painting of nineteenth-century Scheveningen beach

    NARCIS (Netherlands)

    Dekker, JJH

    Around 1800, the desire to go to the beach developed in Europe, and Scheveningen became one of the first beach places. In the same time, poets and painters romanticized the Scheveningen fishing culture and the fishers' moral behavior A group of nineteenth-century painters rediscovered

  19. Regional beach/cliff system dynamics along the california coast

    Science.gov (United States)

    Hapke, C.J.; Reid, Don

    2007-01-01

    The coast of California is comprised of both sandy shorelines and cliffed coastline, and in many areas these features spatially coincide. In order to better understand the regional trends of change along the California coast, the U.S. Geological Survey is quantifying both sandy shoreline change and coastal cliff retreat for the state. The resulting database was used to examine the dynamics of the beach/cliff system. We found inconsistent evidence of a relationship between rates of cliff retreat and shoreline change on the spatial scale of 100-km cells. However, when the data are correlated within individual regions, a strong relationship exists between the geomorphology of the coast and the behavior of the beach/cliff system. Areas of high-relief coast show negative correlations, indicating that higher rates of cliff retreat correlate with lower rates of shoreline erosion. In contrast, low- to moderate-relief coasts show strong positive correlations.

  20. Documenting the global impacts of beach sand mining

    Science.gov (United States)

    Young, R.; Griffith, A.

    2009-04-01

    For centuries, beach sand has been mined for use as aggregate in concrete, for heavy minerals, and for construction fill. The global extent and impact of this phenomenon has gone relatively unnoticed by academics, NGOs, and major news sources. Most reports of sand mining activities are found at the very local scale (if the mining is ever documented at all). Yet, sand mining in many localities has resulted in the complete destruction of beach (and related) ecosystems along with severe impacts to coastal protection and tourism. The Program for the Study of Developed Shorelines at Western Carolina University and Beachcare.org have initiated the construction of a global database of beach sand mining activities. The database is being built through a combination of site visits and through the data mining of media resources, peer reviewed papers, and reports from private and governmental entities. Currently, we have documented sand mining in 35 countries on 6 continents representing the removal of millions of cubic meters of sand. Problems extend from Asia where critical infrastructure has been disrupted by sand mining to the Caribbean where policy reform has swiftly followed a highly publicized theft of sand. The Program for the Study of Developed Shorelines recently observed extensive sand mining in Morocco at the regional scale. Tens of kilometers of beach have been stripped of sand and the mining continues southward reducing hope of a thriving tourism-based economy. Problems caused by beach sand mining include: destruction of natural beaches and the ecosystems they protect (e.g. dunes, wetlands), habitat loss for globally important species (e.g. turtles, shorebirds), destruction of nearshore marine ecosystems, increased shoreline erosion rates, reduced protection from storms, tsunamis, and wave events, and economic losses through tourist abandonment and loss of coastal aesthetics. The threats posed by sand mining are made even more critical given the prospect of a

  1. Evaporation of crude oil and diesel from beach sediment

    International Nuclear Information System (INIS)

    Bech, C.; Guenette, C.; Sveum, P.

    1993-01-01

    Three series of outdoor laboratory experiments were conducted on Spitsbergen to study the evaporation of crude oil and diesel fuel from dry gravel beach sediment under Arctic summer conditions. Evaporation rates were studied as a function of oil loading, depth of contaminated material, and depth of clean sediment covering oiled sediment (to simulate burial of contaminated beach material). Measurement of Evaporation loss was followed by determination of the total weight loss from the experimental containers over periods of 30 to 70 h. The data were fitted to full factorial models in an attempt to explain the variability in the data and the influence of the various factors on evaporation. The results showed that the main factors influencing the evaporation of oil and diesel from sediment were the exposure time, oil loading, amount of clean gravel covering contaminated gravel (i.e. exposure level), and environmental conditions. 5 refs., 3 figs., 4 tabs

  2. Coastal morphology and dynamics of two beaches of Favignana

    International Nuclear Information System (INIS)

    Pasanisi, Francesco; Tebano, Carlo; Grauso, Sergio

    2015-01-01

    Results of an investigation on the coastal morphology and dynamics of two pocket beaches of Favignana, Cala Azzurra and Lido Burrone, are presented. Four detailed hydrographic surveys were performed using multibeam echo sounder with sidescan sonar and differential marine GPS. Surveys were repeated in different periods following the same navigation project. Moreover, incident wave climate and coastal hydrodynamics were investigated using state-of-the-art numerical models. Results of in-situ activities indicate little bathymetric variations among different surveys and suggest a substantial stability of submerged beach profiles limited to surveyed area. Slightly greater bathymetric changes and a generally more intense coastal dynamics were observed at Cala Azzurra compared to Lido Burrone. Simulations of wave propagation and nearshore circulation currents provided results consistent with field observations [it

  3. Bryophytes of beach forests in Chon Buri Province, Thailand

    Directory of Open Access Journals (Sweden)

    Phiangphak Sukkharak

    2014-10-01

    Full Text Available An investigation of bryophyte diversity of three beach forests including Had Tung Prong, Had Tein Talay, and the beach forest in Thai Island and Sea Natural History Museum in Chon Buri Province, Thailand, was carried out. From 137 enumerated specimens, 16 species (6 mosses, 10 liverworts in 12 genera (5 mosses, 7 liverworts and eight families (5 mosses, 3 liverworts were found. Among those the most common families of mosses are Fissidentaceae (2 species and the most common families of liverwort are Lejeuneaceae (8 species. A comparison of species richness among the three areas revealed that the highest species richness of bryophytes was found in Had Tung Prong. Moreover, of all bryophyte species found, Weissia edentula Mitt. was the most common one.

  4. Achieving Energy Savings in Municipal Construction in Long Beach California

    Energy Technology Data Exchange (ETDEWEB)

    None

    2013-03-01

    Long Beach Gas and Oil (LBGO), the public gas utility in Long Beach, California, partnered with the U.S. Department of Energy (DOE) to develop and implement solutions to build a new, low-energy modular office building that is at least 50% below requirements set by Energy Standard 90.1-2007 of the American Society of Heating, Refrigerating, and Air-conditioning Engineers (ASHRAE), the American National Standards Institute (ANSI), and the Illuminating Engineering Society of America (IESNA) as part of DOE’s Commercial Building Partnerships (CBP) program. The LBGO building, which demonstrates that modular construction can be very energy efficient, is expected to exceed the ASHRAE baseline by about 45%.

  5. Semi-automatic recognition of marine debris on beaches

    OpenAIRE

    Ge, Zhenpeng; Shi, Huahong; Mei, Xuefei; Dai, Zhijun; Li, Daoji

    2016-01-01

    An increasing amount of anthropogenic marine debris is pervading the earth?s environmental systems, resulting in an enormous threat to living organisms. Additionally, the large amount of marine debris around the world has been investigated mostly through tedious manual methods. Therefore, we propose the use of a new technique, light detection and ranging (LIDAR), for the semi-automatic recognition of marine debris on a beach because of its substantially more efficient role in comparison with ...

  6. The durban beach monitoring program: simple surveys speak volumes

    CSIR Research Space (South Africa)

    de Wet, p

    2010-10-01

    Full Text Available Conclusions ? CSIR 2010 Slide 2 Introduction ? Durban Port entrance channel deepening & widening (1903 ? ...) barb2right erosion of N.beaches ? sand pumping (1935 ? ... ), low-level groynes / piers (mid 1980s) ? eThekwini Municipality monitoring... scheme for more than 30 yrs barb2right responsible, sound coastal management ? identification of long-term trends, quantify pumping volumes ? observation data NB local, regional, national barb2right implications of ? CSIR 2010 Slide 3 Integrated...

  7. Phragmites Management at Times Beach, Buffalo, New York

    Science.gov (United States)

    2016-01-01

    is most likely haplotype M, which is a highly invasive genotype prevalent in the Midwest and Northeast (Saltonstall 2002). Phragmites spreads by...like Times Beach where dredge material has been spread (Derr 2008a). Phragmites typically grows in dense, monospecific stands which have a negative...monotypic stands of tall, emergent vegetation are generally considered low quality breeding habitat [sic] compared to mixed vegetation stands with

  8. Tracking of Ball and Players in Beach Volleyball Videos

    OpenAIRE

    Gomez, Gabriel; Herrera López, Patricia; Link, Daniel; Eskofier, Bjoern

    2014-01-01

    This paper presents methods for the determination of players' positions and contact time points by tracking the players and the ball in beach volleyball videos. Two player tracking methods are compared, a classical particle filter and a rigid grid integral histogram tracker. Due to mutual occlusion of the players and the camera perspective, results are best for the front players, with 74,6% and 82,6% of correctly tracked frames for the particle method and the integral histogram method, respec...

  9. Pollution of some recreation beaches of Mumbai, Maharashtra

    Digital Repository Service at National Institute of Oceanography (India)

    Ingole, S.A.; Kadam, A.N.

    . S.J.. (1986) Quality of ocean waters around Mumbai. Caius Laboratory., St.Xaviers College. Mumbai. 5. Harrison. R.M..(1995) Pollution: Cause, Effects and Control. Royal Society of Chemistry, Cambridge. 6. Brody, D., Prirkle. J.. Kramer. R... of Mumbai (Figure 1). It was therefore feared that they might have polluted the recreation beaches causing deleterious effects to the human health. Some such effects are known to be skin irritations, gastrointestinal diseases, transmission of typhoid...

  10. Stability of the beaches in Nagapattinam District, Tamilnadu, India

    Digital Repository Service at National Institute of Oceanography (India)

    Manickaraj, D.S.; Chandrasekaran, R.; Gujar, A.R.; Loveson, V.J.; Angusamy, N.; Chandrasekar, N.; Rajamanickam, G.V.

    placer mining is the common phenomena prevailed throughout the world. Besides India, Australia, Malaysia, Srilanka, South Africa, America, Brazil and Canada are also involved in such mining. 1 Beaches are always moving. Winds, waves and currents... has been done to different sampling stations from the permanent bench mark fixed by Survey of India, in the Guest House of Government of Pondicherry at Karaikkal. The height of the different profiling stations had been determined by means of dumpy...

  11. Semi-automatic recognition of marine debris on beaches.

    Science.gov (United States)

    Ge, Zhenpeng; Shi, Huahong; Mei, Xuefei; Dai, Zhijun; Li, Daoji

    2016-05-09

    An increasing amount of anthropogenic marine debris is pervading the earth's environmental systems, resulting in an enormous threat to living organisms. Additionally, the large amount of marine debris around the world has been investigated mostly through tedious manual methods. Therefore, we propose the use of a new technique, light detection and ranging (LIDAR), for the semi-automatic recognition of marine debris on a beach because of its substantially more efficient role in comparison with other more laborious methods. Our results revealed that LIDAR should be used for the classification of marine debris into plastic, paper, cloth and metal. Additionally, we reconstructed a 3-dimensional model of different types of debris on a beach with a high validity of debris revivification using LIDAR-based individual separation. These findings demonstrate that the availability of this new technique enables detailed observations to be made of debris on a large beach that was previously not possible. It is strongly suggested that LIDAR could be implemented as an appropriate monitoring tool for marine debris by global researchers and governments.

  12. Biorock Electric Reefs Grow Back Severely Eroded Beaches in Months

    Directory of Open Access Journals (Sweden)

    Thomas J. F. Goreau

    2017-10-01

    Full Text Available Severely eroded beaches on low lying islands in Indonesia were grown back in a few months—believed to be a record—using an innovative method of shore protection, Biorock electric reef technology. Biorock shore protection reefs are growing limestone structures that get stronger with age and repair themselves, are cheaper than concrete or rock sea walls and breakwaters, and are much more effective at shore protection and beach growth. Biorock reefs are permeable, porous, growing, self-repairing structures of any size or shape, which dissipate wave energy by internal refraction, diffraction, and frictional dissipation. They do not cause reflection of waves like hard sea walls and breakwaters, which erodes the sand in front of, and then underneath, such structures, until they collapse. Biorock reefs stimulate settlement, growth, survival, and resistance to the environmental stress of all forms of marine life, restoring coral reefs, sea grasses, biological sand production, and fisheries habitat. Biorock reefs can grow back eroded beaches and islands faster than the rate of sea level rise, and are the most cost-effective method of shore protection and adaptation to global sea level rise for low lying islands and coasts.

  13. Intraspecific diet shift in Talitrus saltator inhabiting exposed sandy beaches

    Science.gov (United States)

    Olabarria, Celia; Incera, Mónica; Garrido, Josefina; Rodil, Iván F.; Rossi, Francesca

    2009-09-01

    Talitrid amphipods are the most abundant herbivores on exposed sandy beaches. Despite their important role as trophic intermediates between macrophytes and higher levels (i.e. insect and bird) of beach food webs, very little information is available on their feeding patterns. The main aim of this study was to investigate intraspecific differences in the feeding behaviour of Talitrus saltator. We tested the hypotheses that: (1) adult females and males showed different isotope signatures and therefore relied on different sources of food; and (2) patterns of variation of isotope signatures of juveniles differed from those of adult specimens, evidencing a diet shift during the development. We used stable isotope signatures and tested for differences upon the level on the shore, times of the year and beaches experiencing similar morpho-dynamic and environmental conditions. Finally, we investigated the trophic significance of macrophyte detritus in the diet of males, females and juveniles. Results showed that adult males had a more variable diet than females and juveniles (inferred from δ 13C and δ 15N values). Dual-isotope graphs suggested that Sargassum muticum and Cystoseira baccata wrack could be among the main food sources for both juvenile and adult stage.

  14. Comparing different methods for fast screening of microbiological quality of beach sand aimed at rapid-response remediation.

    Science.gov (United States)

    Testolin, Renan C; Almeida, Tito C M; Polette, Marcus; Branco, Joaquim O; Fischer, Larissa L; Niero, Guilherme; Poyer-Radetski, Gabriel; Silva, Valéria C; Somensi, Cleder A; Corrêa, Albertina X R; Corrêa, Rogério; Rörig, Leonardo R; Itokazu, Ana Gabriela; Férard, Jean-François; Cotelle, Sylvie; Radetski, Claudemir M

    2017-05-15

    There is scientific evidence that beach sands are a significant contributor to the pathogen load to which visitors are exposed. To develop beach quality guidelines all beach zones must be included in microbiological evaluations, but monitoring methods for beach sand quality are relatively longstanding, expensive, laborious and require moderate laboratory infrastructure. This paper aimed to evaluate the microorganism activity in different beach zones applying and comparing a classical method of membrane filtration (MF) with two colorimetric screening methods based on fluorescein (FDA) and tetrazolium (TTC) salt biotransformation to evaluate a new rapid and low-cost method for beach sand microbiological contamination assessments. The colorimetric results can help beach managers to evaluate rapidly and at low cost the microbiological quality of different beach zones in order to decide whether remedial actions need to be adopted to prevent exposure of the public to microbes due to beach sand and/or water contamination. Copyright © 2017. Published by Elsevier Ltd.

  15. Bacteriological Monitoring and Sustainable Management of Beach Water Quality in Malaysia: Problems and Prospects

    Science.gov (United States)

    Dada, Ayokunle Christopher; Asmat, Ahmad; Gires, Usup; Heng, Lee Yook; Deborah, Bandele Oluwaseun

    2012-01-01

    Despite the growing demand of tourism in Malaysia, there are no resolute efforts to develop beaches as tourist destinations. With no incentives to monitor public beaches or to use them in a sustainable manner, they might eventually degenerate in quality as a result of influx of pollutants. This calls for concerted action plans with a view to promoting their sustainable use. The success of such plans is inevitably anchored on the availability of robust quality monitoring schemes. Although significant efforts have been channelled to collation and public disclosure of bacteriological quality data of rivers, beach water monitoring appears left out. This partly explains the dearth of published information related to beach water quality data. As part of an on-going nation-wide surveillance study on the bacteriological quality of recreational beaches, this paper draws on a situation analysis with a view to proffering recommendations that could be adapted for ensuring better beach water quality in Malaysia. PMID:22980239

  16. Cardiovascular consequence of reclining vs. sitting beach-chair body position for induction of anesthesia

    DEFF Research Database (Denmark)

    Larsen, Soren L.; Lyngeraa, Tobias S.; Maschmann, Christian P.

    2014-01-01

    The sitting beach-chair position is regularly used for shoulder surgery and anesthesia may be induced in that position. We tested the hypothesis that the cardiovascular challenge induced by induction of anesthesia is attenuated if the patient is placed in a reclining beach-chair position....... Anesthesia was induced with propofol in the sitting beach-chair (n = 15) or with the beach-chair tilted backwards to a reclining beach-chair position (n = 15). The last group was stepwise tilted to the sitting beach-chair position prior to surgery. Hypotension was treated with ephedrine. Continuous...... ± 12 vs. 45 ± 15 % reduction from baseline, p = 0.04) and ScO2 (7 ± 6 vs. 1 ± 8% increase from baseline, p = 0.02) and received less ephedrine (mean: 4 vs. 13 mg, p = 0.048). The higher blood pressure and lower need of vasopressor following induction of anesthesia in the reclining compared...

  17. Research on pathogens at Great Lakes beaches: sampling, influential factors, and potential sources

    Science.gov (United States)

    ,

    2013-01-01

    The overall mission of this work is to provide science-based information and methods that will allow beach managers to more accurately make beach closure and advisory decisions, understand the sources and physical processes affecting beach contaminants, and understand how science-based information can be used to mitigate and restore beaches and protect the public. The U.S. Geological Survey (USGS), in collaboration with many Federal, State, and local agencies and universities, has conducted research on beach health issues in the Great Lakes Region for more than a decade. The work consists of four science elements that align with the USGS Beach Health Initiative Mission: real-time assessments of water quality; coastal processes; pathogens and source tracking; and data analysis, interpretation, and communication. The ongoing or completed research for the pathogens and source tracking topic is described in this fact sheet.

  18. Bacteriological monitoring and sustainable management of beach water quality in Malaysia: problems and prospects.

    Science.gov (United States)

    Dada, Ayokunle Christopher; Asmat, Ahmad; Gires, Usup; Heng, Lee Yook; Deborah, Bandele Oluwaseun

    2012-04-28

    Despite the growing demand of tourism in Malaysia, there are no resolute efforts to develop beaches as tourist destinations. With no incentives to monitor public beaches or to use them in a sustainable manner, they might eventually degenerate in quality as a result of influx of pollutants. This calls for concerted action plans with a view to promoting their sustainable use. The success of such plans is inevitably anchored on the availability of robust quality monitoring schemes. Although significant efforts have been channelled to collation and public disclosure of bacteriological quality data of rivers, beach water monitoring appears left out. This partly explains the dearth of published information related to beach water quality data. As part of an on-going nation-wide surveillance study on the bacteriological quality of recreational beaches, this paper draws on a situation analysis with a view to proffering recommendations that could be adapted for ensuring better beach water quality in Malaysia.

  19. Variability of grain sizes in a beach nourishment programme for the Danish West Caost

    DEFF Research Database (Denmark)

    Frigaard, Peter; Wahl, Niels Arne

    2007-01-01

    The coastal landscape in Denmark is characterized by multiple areas of geologic, biologic and recreational interests both national and international. In the later years several guidelines have been set up for the coastal protection area. The aims for the future are to ensure the presence...... of naturally shaped beaches while at the same time the risk for erosion is reduced. For this reason beach nourishment is used widely along the Danish North Sea coast (called West Coast) and this method is preferred in preference to put up solid constructions. Beach nourishment is the primary method used...... by the Danish Coastal Authority. However problems have occurred in describing the spatial distribution of medium grain size d50 and the gradation U of the sediment used for beach nourishment. At the same time the sedimentary composition determines how fast the nourished beach is eroded and how the beach...

  20. Beach dynamics and nest distribution of the leatherback turtle (Dermochelys coriacea at Grande Riviere Beach,Trinidad &Tobago

    Directory of Open Access Journals (Sweden)

    Lori Lee Lum

    2005-05-01

    Full Text Available Grande Riviere Beach in Trinidad and Tobago is an important nesting site in the Caribbean for the Critically Endangered leatherback sea turtle,Dermochelys coriacea .Community members were concerned that beach erosion and seasonal river flooding were destroying many of the nests deposited annually and thought that a hatchery was a possible solution.Over the 2001 turtle nesting season,the Institute of Marine Affairs (IMA assessed the spatial and temporal distribution of nests using the Global Positioning System recorded to reference points,and beach dynamics using permanent bench mark profile stations,to determine areas of high risk and more stable areas for nesting.A total of 1449 leatherback nests were positioned.It was evident that at the start of the season in March,the majority of leatherback nests were deposited at the eastern section of the beach. After May,there was a continuing westward shift in nest distribution as the season progressed until August and beach erosion in the eastern section became predominant.The backshore remained relatively stable along the entire beach throughout the nesting season,and erosion was predominant in the foreshore at the eastern section of the beach,from the middle to the end of the season.Similar trends in accretion and erosion were observed in 2000.River flooding did not occur during the study period or in the previous year.With both high risk and more stable regions for turtle nesting available at Grande Riviere Beach,there was no compelling evidence to justify the need for a hatchery.La playa de Grande Riviere en Trinidad y Tobago es un sitio importante de anidación en el Caribe de la tortuga baula,Dermochelys coriacea ;una tortuga marina en peligro de extinción.Los residentes estaban preocupados de que la erosión de la playa y las inundaciones estacionales estaban destruyendo muchos de los nidos y pensaron que un criadero era una solución.Durante la temporada de anidación del 2001,el Instituto de

  1. Tracing the source of marine debris on the beaches of northern New South Wales, Australia: The Bottles on Beaches program.

    Science.gov (United States)

    Smith, Stephen D A; Banister, Kelsey; Fraser, Nicola; Edgar, Robert J

    2018-01-01

    Identifying the source of marine plastic pollution accumulating on ocean beaches is often difficult as unidentifiable fragments of plastic usually predominate. In this study, we surveyed plastic bottles as a relatively identifiable subset of plastics on 30km of beach along a 200-km section of the north coast of New South Wales, Australia. Source and product type (contents) were determined using barcodes, inscriptions/embossing, or bottle shape and characteristics. Country of origin and product type could be determined for two-thirds of the 694 bottles found. Just over half (51%) of these were of domestic origin with the remainder dominated by bottles from China (24%) and south-east Asian countries (21%). As most of the foreign bottles lacked marine growth, and are unavailable for purchase in the region, passing ships are hypothesised as the primary source. Copyright © 2017 Elsevier Ltd. All rights reserved.

  2. Biogenic sediments from coastal ecosystems to beach-dune systems: implications for the adaptation of mixed and carbonate beaches to future sea level rise

    Science.gov (United States)

    De Falco, Giovanni; Molinaroli, Emanuela; Conforti, Alessandro; Simeone, Simone; Tonielli, Renato

    2017-07-01

    Coastal ecosystems produce and store carbonate particles, which play a significant role in the carbonate dynamics of coastal areas and may contribute to the sediment budget of adjacent beaches. In the nearshore seabed of temperate zones (e.g. Mediterranean Sea and South Australia), marine biogenic carbonates are mainly produced inside seagrass meadows. This study quantifies the contribution of biogenic sediments, mainly produced in Posidonia oceanica seagrass meadows and secondarily in photophilic algal communities, to the sediment budget of a Mediterranean beach-dune system (San Giovanni beach, western Sardinia, western Mediterranean Sea). A set of geophysical, petrographic and sedimentological data was used to estimate the sediment volume and composition of the beach-dune system as a whole. The San Giovanni beach-dune system contains 3 797 000 ± 404 000 t of sediment, 83 % (3 137 000 ± 404 000 t) of which is located in the coastal wedge, 16 % (619 000 ± 88 000 t) in the dune fields and 1 % (41 000 ± 15 000 t) in the subaerial beach. The sediments are composed of mixed modern bioclastic and relict bioclastic and non-bioclastic grains from various sources. The system receives a large input of modern bioclastic grains, mainly composed of rhodophytes, molluscs and bryozoans, which derive from sediment production of present-day carbonate factories, particularly P. oceanica seagrass meadows. Radiocarbon dating of modern bioclastic grains indicated that they were produced during the last 4.37 kyr. This value was used to estimate the long-term deposition rates of modern bioclastic sediments in the various beach compartments. The total deposition rate of modern bioclastic grains is 46 000 ± 5000 t century-1, mainly deposited in the coastal wedge (39 000 ± 4 000 t century-1) and dunes (7000 ± 1000 t century-1), and 46 000 t represents ˜ 1.2 % of the total beach-dune sediment mass. Carbonate production from coastal ecosystems was estimated to be 132 000/307 000 t

  3. 46 CFR 7.25 - Montauk Point, NY to Atlantic Beach, NY.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 1 2010-10-01 2010-10-01 false Montauk Point, NY to Atlantic Beach, NY. 7.25 Section 7... LINES Atlantic Coast § 7.25 Montauk Point, NY to Atlantic Beach, NY. (a) A line drawn from Shinnecock... Light 348° true to the southernmost extremity of the spit of land at the western end of Oak Beach. (d) A...

  4. Calculation of Beach Change Under Interacting Cross-Shore and Longshore Processes

    Science.gov (United States)

    2010-01-01

    Mathematicalmodeling of the fate of beach fill. In: Niemayer, H.D., van Overeem, J., van de Graaff , J. (Eds.), Artificial Beach Nourishments: Coastal Engineering, vol...Dunes are formed by wind-blown sand transport from the berm and foreshore. Psuty (1990) discusses dune transformation processes for the general area of...berm up to some distance over which equilibrium conditions have developed, implying that beyond equilibrium awider beach does not generate more

  5. Environmental factors controlling macrofaunal assemblages on six microtidal beaches of the Ligurian Sea (NW Mediterranean)

    Science.gov (United States)

    Covazzi Harriague, Anabella; Albertelli, Giancarlo

    2007-06-01

    Six microtidal beaches along the Ligurian coast (NW Mediterranean, Italy) were sampled in order to study their macrofaunal assemblages. All six beaches are subject to heavy tourism in the swimming season and three were subject to nourishment activities during the study period (May 2000). The beaches of Lavagna, Varazze and Pietra Ligure were sampled three times: before the nourishment and the onset of the swimming season (March 2000), after the nourishment (June 2000) and at the end of the swimming season (October 2000). The beaches of Varigotti, Albisola and Loano were sampled twice: before and after the swimming season (March and October 2000, respectively). Sampling was performed along two transects (T1 and T2), about 500 m apart, each transect having three sampling stations: one placed in the swash zone, one in the surf zone and one in the subtidal zone (depth of 3-5 m), in order to verify how far the nourishment material reached. The beaches were characterised by coarse sediments that became finer towards the sub-littoral station. The Beach Deposit Index and Beach Index classified the beaches as reflective (Lavagna, Varazze, Albisola and Varigotti) or intermediate (Pietra Ligure and Loano). Species richness showed a clearly increasing pattern from the swash zone (average 7) to the subtidal zone (average 103). The beach communities were dominated by polychaetes, in particular Saccocirrus papillocercus, which was mainly responsible for the dissimilarity between the beach and subtidal stations. The highest abundance was observed at the surf station (average 118.6 ind. m -2) and the lowest at the subtidal station (average 82.1 ind. m -2). The sediment composition and macrofaunal assemblages were not affected by the beach nourishment. The beach communities responded to different environmental descriptors: species richness seemed to be governed by environmental harshness, while abundance seemed to be linked to the degree of homogeneity of the sediments and the

  6. Pleistocene and holocene beaches and estuaries along the Southern Barrier of Buenos Aires, Argentina

    Science.gov (United States)

    Isla, Federico I.; Cortizo, Luis C.; Schnack, Enrique J.

    The Buenos Aires aggradation plain has a good record of Quaternary sea-level fluctuations. To the east of the Tandilia Range, the elevations of the Pleistocene beaches respond to the tectonic behaviour of the Salado Basin. Holocene beaches indicate a maximum transgression higher than 2 m. The low relief permitted an extended horizontal record of beach/chenier plains interfingered with estuarine environments (coastal lagoons, marshes) covered by a sandy (Eastern) barrier. Between the Tandilia and Ventania ranges, the location of Pleistocene and Holocene beaches are related to a former higher relief; i.e. they are attached to low-altitude cliffs and underneath cliff-top dunes composing the Southern Barrier. At Claromecó, Pleistocene gravel beaches, mostly composed of caliche pebbles, occur at heights between 4 and 7 m, and are overlying estuarine Pleistocene environments. Beaches of the same age are at a level of 10 m at Mar del Plata Harbour and Arroyo Sotelo (west of Mar Chiquita Lagoon). Holocene beaches found at Punta Mogotes and Costa Bonita are at higher altitudes than on the Eastern Barrier (ca. 2-4 m). The Holocene estuarine sequences are related laterally to present operating inlets (Las Brusquitas, La Ballenera, Quequén Grande, Claromecó, Quequén Salado). They are seldon thicker than 2.4 m, and comprise basal layers of black muds; towards the top, the layers are thinner, of coarser grain size and white colours. Grain-size analyses were performed comparatively on Pleistocene, mid-Holocene and present beaches. Sangamonian beaches aregravelly or coarser than medium sand (mean). Holocene beaches are usually coarser than medium sand, but dominantly shelly to the north of Mar del Plata, and composed of volcanic clasts to the south of this city. Modern beaches are dominated by fine sand, except at some erosive beaches between the Mar del Plata capes. They have a lesser content of shells than those of mid-Holocene.

  7. OSPAR standard method and software for statistical analysis of beach litter data.

    Science.gov (United States)

    Schulz, Marcus; van Loon, Willem; Fleet, David M; Baggelaar, Paul; van der Meulen, Eit

    2017-09-15

    The aim of this study is to develop standard statistical methods and software for the analysis of beach litter data. The optimal ensemble of statistical methods comprises the Mann-Kendall trend test, the Theil-Sen slope estimation, the Wilcoxon step trend test and basic descriptive statistics. The application of Litter Analyst, a tailor-made software for analysing the results of beach litter surveys, to OSPAR beach litter data from seven beaches bordering on the south-eastern North Sea, revealed 23 significant trends in the abundances of beach litter types for the period 2009-2014. Litter Analyst revealed a large variation in the abundance of litter types between beaches. To reduce the effects of spatial variation, trend analysis of beach litter data can most effectively be performed at the beach or national level. Spatial aggregation of beach litter data within a region is possible, but resulted in a considerable reduction in the number of significant trends. Copyright © 2017 Elsevier Ltd. All rights reserved.

  8. Human viruses and viral indicators in marine water at two recreational beaches in Southern California, USA.

    Science.gov (United States)

    Love, David C; Rodriguez, Roberto A; Gibbons, Christopher D; Griffith, John F; Yu, Qilu; Stewart, Jill R; Sobsey, Mark D

    2014-03-01

    Waterborne enteric viruses may pose disease risks to bather health but occurrence of these viruses has been difficult to characterize at recreational beaches. The aim of this study was to evaluate water for human virus occurrence at two Southern California recreational beaches with a history of beach closures. Human enteric viruses (adenovirus and norovirus) and viral indicators (F+ and somatic coliphages) were measured in water samples over a 4-month period from Avalon Beach, Catalina Island (n = 324) and Doheny Beach, Orange County (n = 112). Human viruses were concentrated from 40 L samples and detected by nested reverse transcriptase polymerase chain reaction (PCR). Detection frequencies at Doheny Beach were 25.5% (adenovirus) and 22.3% (norovirus), and at Avalon Beach were 9.3% (adenovirus) and 0.7% (norovirus). Positive associations between adenoviruses and fecal coliforms were observed at Doheny (p = 0.02) and Avalon (p = 0.01) Beaches. Human viruses were present at both beaches at higher frequencies than previously detected in the region, suggesting that the virus detection methods presented here may better measure potential health risks to bathers. These virus recovery, concentration, and molecular detection methods are advancing practices so that analysis of enteric viruses can become more effective and routine for recreational water quality monitoring.

  9. Response to storm conditions of two different beaches at the Mediterranean coast of Morocco

    Science.gov (United States)

    El Mrini, Aldelmounim; Anfuso, Giorgio; Nachite, Driss; Taaouati, Mohamed

    2010-05-01

    In recent decades the increased demand for the recreational use of beaches has resulted in the uptake of studies on the morphodynamic processes which are acting on beaches. This knowledge is fundamental for appropriate coastal erosion management, suitable tourist use of littoral and for the design and shape of human construction. The Mediterranean sectors of Moroccan littoral investigated in this study, Ksar Rimal and Cabo Negro beaches, are respectively located north and south of Cabo Negro promontory and, over recent years, have been subject to increasing tourist activity. This has consisted mainly of the construction of two tourist ports (Marina Smir and Kabila), residential developments, hotels and a motorway which runs parallel to the coast, affecting the dune ridges and two lagoons which are of great ecological interest. In detail, the dunes located in the backshore at Ksar Rimal beach, are nowadays occupied by summer houses threaten by coastal retreat. A wide, partially urbanized, backshore is observed at Cabo Negro beach. With the intention of characterize the morphodynamic and seasonal behavior and the response of the studied beaches to storm impact, a beach monitoring program was carried out in the period 2006-2008, with special attention to the February-March 2008 stormy period. On analyzing the information obtained, it was possible to characterize the morphology and sedimentology of the studied beaches, and to calculate beach volumetric variations. Ksar Rimal is an open, exposed beach characterized by an intermediate slope (tan β = 0.10) with medium-coarse sands. The beach showed a reflective beach state characterized by plunging breakers. Small morphological seasonal changes were observed, most important morphological and volumetric variations (about 20 m3/m) taking place after winter storms which usually gave rise to a more dissipative beach profile (tan β = 0.05) characterized by spilling breakers. Beach recovery was quite rapid, usually lasting 2

  10. Terrestrial-based lidar beach topography of Fire Island, New York, June 2014

    Science.gov (United States)

    Brenner, Owen T.; Hapke, Cheryl J.; Lee, Kathryn G.; Kimbrow, Dustin R.

    2016-02-19

    The U.S. Geological Survey (USGS) St. Petersburg Coastal and Marine Science Center (SPCMSC) in Florida and the USGS Lower Mississippi-Gulf Water Science Center (LMG WSC) in Montgomery, Alabama, collaborated to gather alongshore terrestrial-based lidar beach elevation data at Fire Island, New York. This high-resolution elevation dataset was collected on June 11, 2014, to characterize beach topography and document ongoing beach evolution and recovery, and is part of the ongoing beach monitoring within the Hurricane Sandy Supplemental Project GS2-2B. This USGS data series includes the resulting processed elevation point data (xyz) and an interpolated digital elevation model (DEM).

  11. Plastic litter accumulation on high-water strandline of urban beaches in Mumbai, India.

    Science.gov (United States)

    Jayasiri, H B; Purushothaman, C S; Vennila, A

    2013-09-01

    Today, almost every beach on every coastline is threatened by human activities. The inadequate recycling and poor management of waste in developing countries has resulted in considerable quantities of plastic contaminating beaches. Though India has long coastline of 5,420 km along the mainland with 43 % of sandy beaches, data on litter accumulation, particularly the plastics, which are one of the most common and persistent pollutants in marine environment, are scanty. The abundance and distribution of plastic litter was quantitatively assessed in four sandy beaches in Mumbai, India, bimonthly from May 2011 to March 2012. Triplicates of 2 × 2 m (4 m(2)) quadrats were sampled in each beach with a total of 72 quadrats. Overall, average abundance of 11.6 items m(-2) (0.25-282.5 items m(-2)) and 3.24 g m(-2) (0.27-15.53 g m(-2)) plastic litter was recorded in Mumbai beaches. Plastic litter accumulation significantly varied temporally and spatially at p = 0.05. Significantly higher plastic litter accumulation was recorded in Juhu beach. Furthermore, the highest abundance by weight was recorded in November and May numerically. More than 80 % of plastic particles were within the size range of 5-100 mm both by number and weight. Moreover, coloured plastics were predominant with 67 % by number of items and 51 % by weight. Probably, the intense use of beaches for recreation, tourism, and religious activities has increased the potential for plastic contamination in urban beaches in Mumbai.

  12. Assessment of cleanup needs of oiled sandy beaches: lessons from the Prestige oil spill.

    Science.gov (United States)

    Bernabeu, Ana M; Rey, Daniel; Rubio, Belén; Vilas, Federico; Domínguez, Carmen; Bayona, Josep M; Albaigés, Joan

    2009-04-01

    Surveys of the oiled sandy beaches along the northern Atlantic coast of Spain, 2-5 years after the Prestige oil spill of November 2002, have provided new evidence regarding buried fuel and its behavior. The persistence and depth of burial of oil, and the capacity of the beach for natural regeneration, depend on beach morphodynamics, which drive a sequence of physicochemical processes that reduce subsurface tar balls to highly divided oil forms while also allowing appreciable weathering despite burial. These findings prompted reassessment of current spill evaluation strategies. A protocol is proposed that combines the modeling of beach morphodynamics, an environmentally friendly coring survey, and well-calibrated hydrocarbon analysis.

  13. Effects of Fishing and Fishing Closures on Beach Clams: Experimental Evaluation across Commercially Fished and Non-Fished Beaches before and during Harvesting.

    Science.gov (United States)

    Gray, Charles A

    2016-01-01

    Management responses to reconcile declining fisheries typically include closed areas and times to fishing. This study evaluated this strategy for a beach clam fishery by testing the hypothesis that changes in the densities and size compositions of clams from before to during harvesting would differ between commercially fished and non-fished beaches. Sampling was spatially stratified across the swash and dry sand habitats on each of two commercially fished and two non-fished beaches, and temporally stratified across three six-week blocks: before, early and late harvesting. Small-scale spatio-temporal variability in the densities and sizes of clams was prevalent across both habitats and the components of variation were generally greatest at the lowest levels examined. Despite this, differences in the densities and sizes of clams among individual beaches were evident, but there were few significant differences across the commercially fished versus non-fished beaches from before to during harvesting. There was no evidence of reduced densities or truncated size compositions of clams on fished compared to non-fished beaches, contrasting reports of some other organisms in protected areas. This was probably due to a combination of factors, including the current levels of commercial harvests, the movements and other local-scale responses of clams to ecological processes acting independently across individual beaches. The results identify the difficulties in detecting fishing-related impacts against inherent levels of variability in clam populations. Nevertheless, continued experimental studies that test alternate management arrangements may help refine and determine the most suitable strategies for the sustainable harvesting of beach clams, ultimately enhancing the management of sandy beaches.

  14. Digital collection of photographic surveys of beach profiles and animals taken as part of the Beach Watch program at Doran Beach (segment 1-06), California from 1995-01-15 to 1995-07-01 (NODC Accession 0037166)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NOAA's Gulf of the Farallones National Marine Sanctuary (GFNMS) Beach Watch Program, administered by the Farallones Marine Sanctuary Association (FMSA), is a...

  15. Digital collection of photographic surveys of beach profiles and animals taken as part of the Beach Watch program at Dillon Beach (segment 1-10), California from 1996-04-14 to 1996-10-25 (NCEI Accession 0071545)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NOAA's Gulf of the Farallones National Marine Sanctuary (GFNMS) Beach Watch Program, administered by the Farallones Marine Sanctuary Association (FMSA), is a...

  16. Digital collection of photographic surveys of beach profiles and animals taken as part of the Beach Watch program at Doran Beach (segment 1-06), California from 2004-06-20 to 2004-09-26 (NODC Accession 0071433)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NOAA's Gulf of the Farallones National Marine Sanctuary (GFNMS) Beach Watch Program, administered by the Farallones Marine Sanctuary Association (FMSA), is a...

  17. Digital collection of photographic surveys of beach profiles and animals taken as part of the Beach Watch program at Doran Beach (segment 1-06), California from 2001-03-30 to 2002-01-18 (NODC Accession 0071404)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NOAA's Gulf of the Farallones National Marine Sanctuary (GFNMS) Beach Watch Program, administered by the Farallones Marine Sanctuary Association (FMSA), is a...

  18. Digital collection of photographic surveys of beach profiles and animals taken as part of the Beach Watch program at Doran Beach (segment 1-06), California from 1994-01-13 to 1994-06-01 (NODC Accession 0037161)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NOAA's Gulf of the Farallones National Marine Sanctuary (GFNMS) Beach Watch Program, administered by the Farallones Marine Sanctuary Association (FMSA), is a...

  19. Digital collection of photographic surveys of beach profiles and animals taken as part of the Beach Watch program at Doran Beach (segment 1-06), California from 2002-02-01 to 2002-10-25 (NODC Accession 0071405)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NOAA's Gulf of the Farallones National Marine Sanctuary (GFNMS) Beach Watch Program, administered by the Farallones Marine Sanctuary Association (FMSA), is a...

  20. Digital collection of photographic surveys of beach profiles and animals taken as part of the Beach Watch program at Doran Beach (segment 1-06), California from 1995-07-29 to 1995-12-18 (NODC Accession 0037167)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NOAA's Gulf of the Farallones National Marine Sanctuary (GFNMS) Beach Watch Program, administered by the Farallones Marine Sanctuary Association (FMSA), is a...

  1. Digital collection of photographic surveys of beach profiles and animals taken as part of the Beach Watch program at Doran Beach (segment 1-06), California from 1997-02-09 to 1997-09-22 (NODC Accession 0037172)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NOAA's Gulf of the Farallones National Marine Sanctuary (GFNMS) Beach Watch Program, administered by the Farallones Marine Sanctuary Association (FMSA), is a...

  2. Digital collection of photographic surveys of beach profiles and animals taken as part of the Beach Watch program at Doran Beach (segment 1-06), California from 1997-12-27 to 1998-12-11 (NODC Accession 0071352)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NOAA's Gulf of the Farallones National Marine Sanctuary (GFNMS) Beach Watch Program, administered by the Farallones Marine Sanctuary Association (FMSA), is a...

  3. Solid Waste Transportation through Ocean Currents: Marine Debris Sightings and their Waste Quantification at Port Dickson Beaches, Peninsular Malaysia

    Directory of Open Access Journals (Sweden)

    Chong Jing Yi

    2016-07-01

    Full Text Available Four beaches at Port Dickson, Peninsular Malaysia, namely Saujana Beach, Nelayan Beach, Bagan Pinang Beach and Cermin beach have been sampled for marine debris from 7th June 2014 until 26th July 2014, on every Saturday. These beaches face the Strait of Malacca with a coastline stretching 18 km each. Our observations revealed a total debris items of 13193 in those beaches. The top three items of highest frequency were cigarette butts, foamed fragments and food wrappers. Plastic debris scaled high upto 41% of the total debris. Compared to the ocean conservancy�s 2013 report of marine debris in Malaysian beaches, which was 27,005 items with in 6.44 km, the current count is slightly low. However, Malaysia was ranked 14th place among the top 20 countries in International Marine Debris Watch program. Nelayan Beach is the dirtiest beach in Port Dickson. Around 50% of the total plastic items collected are found on those beaches. The marine debris items indicated that they arrived there by land-based and ocean-based activities. High energy conditions such as wind and waves in the beaches correlated well with less debris deposition on the beaches. With debris equivalent of 4193 items/km, Malaysia harvests less solid wastes compared to Croatia, USA, Singapore and Turkey. However, a nation wide survey is needed to assess the seriousness of marine debris problem in Malaysia.

  4. Morphodynamic evolution of Laida beach (Oka estuary, Urdaibai Biosphere Reserve, southeastern Bay of Biscay) in response to supratidal beach nourishment actions

    Science.gov (United States)

    Monge-Ganuzas, M.; Gainza, J.; Liria, P.; Epelde, I.; Uriarte, A.; Garnier, R.; González, M.; Nuñez, P.; Jaramillo, C.; Medina, R.

    2017-12-01

    Laida beach, located at the Oka estuary mouth (Urdaibai Biosphere Reserve) in the southeastern region of the Bay of Biscay, suffered the impact of a severe succession of storms during the first months of 2014. As a result of the erosion induced by these events, the beach lost its supratidal zone almost completely. The absence of a supratidal beach generated an impact on the recreational use of the beach during the summer 2014, and represented a potential impact for the coming summer 2015. Furthermore, it resulted in an overexposure and damage of adjacent infrastructures due to impinging strong waves. Therefore, the competent authorities, in coordination, decided to take action in order to nourish the supratidal zone of this beach. The solution adopted combined two different actions. The first one accomplished in spring of 2015, consisted in the mobilization of 44,800 m3 of sand from an area of 35,200 m2 equal to the 7% of the intertidal zone of Laida beach interpreted as the existing surface between the average low and high tidal limits, to the zone next to the eastern rocky beach contour. This action successfully resulted in an increase of the supratidal beach for the entire summer 2015 without negatively perturbing the morphological system. The second action was somewhat experimental and consisted in the mechanical plough of the previously existing intertidal low-amplitude ridges with the aim of increasing the sand transport toward the supratidal beach. Although this action did not lead to the increase of the supratidal beach, it seems to have resulted in an acceleration of the natural onshore migration of the bars. The objective of this contribution is to describe the morphodynamical response of the estuarine mouth after the performed actions with special emphasis on the evolution of extracted sites and the supratidal Laida beach area. The information here presented represents an innovative step in the understanding of the complex mechanisms driving the

  5. Analysis of the Relationship Between Physical Environmental Parameters and Beach Water Quality in a Subtropical Setting

    Science.gov (United States)

    Zhu, X.; Wang, J. D.; Elmir, S.; Solo-Gabriele, H. M.; Wright, M. E.; Abdelzaher, A.

    2006-12-01

    Fecal Indicator Bacteria(FIB) are found in high concentrations in sewage water, and thus are used to indicate whether there is fecal material related pathogen present and to determine whether a beach is safe for recreational use. Studies have shown, however, in subtropical regions, FIB concentrations above EPA standards may be present in the absence of known point sources of human or animal waste, thus reducing the efficacy of FIB beach monitoring programs. An interdisciplinary study is being conducted in Miami, Florida , the goal is to understand the sources and behavior of FIB on a beach without point source loads and also to improve beach health hazard warnings in subtropical regions. This study, examines relationship between enterococci (EPA recommended FIB for use in marine water) and physical environmental parameters such as rain, tide and wind. FIB data employed include Florida Department of Health weekly beach monitoring enterococci (ENT) data during a five year period and a two-day experiment with hourly sampling at Hobie Cat Beach on Virginia Key in the Miami metropolitan area. The environmental data consist of wind from a nearby CMAN tower, and local rain and tide. The analysis also includes data from nearby beaches monitored by the Health Department. Results show the correlation coefficient between ENT and tide at Hobie Cat Beach is positive but not significant(r=0.17). Rain events have a significant influence on ENT at Hobie Cat Beach, with a correlation coefficient of up to 0.7 while at other beaches the correlation is less than 0.2. Reasons for this aberration are being investigated. Although this is the only beach allowing dogs there are other factors of possible importance, such as tidal flats frequented by birds and weaker water circulation and exchange at this beach facing a bay rather than the ocean. Higher ENT levels (> 300CFU/100ml water) are more likely (67% of the time) to be associated with periods of onshore winds, which may affect the

  6. Isolation, identification, and pathological effects of beach sand bacterial extract on human skin keratinocytesin vitro.

    Science.gov (United States)

    Subhan, Fazli; Shahzad, Raheem; Tauseef, Isfahan; Haleem, Kashif Syed; Rehman, Atta-Ur; Mahmood, Sajid; Lee, In-Jung

    2018-01-01

    Beaches are recreational spots for people. However, beach sand contains harmful microbes that affect human health, and there are no established methods for either sampling and identifying beach-borne pathogens or managing the quality of beach sand. This study was conducted with the aim of improving human safety at beaches and augmenting the quality of the beach experience. Beach sand was used as a resource to isolate bacteria due to its distinctive features and the biodiversity of the beach sand biota. A selected bacterial isolate termed FSRS was identified as Pseudomonas stutzeri using 16S rRNA sequencing and phylogenetic analysis, and the sequence was deposited in the NCBI GenBank database under the accession number MF599548. The isolated P. stutzeri bacterium was cultured in Luria-Bertani growth medium, and a crude extract was prepared using ethyl acetate to examine the potential pathogenic effect of P. stutzeri on human skin. A human skin keratinocyte cell line (HaCaT) was used to assess cell adhesion, cell viability, and cell proliferation using a morphological analysis and a WST-1 assay. The crude P. stutzeri extract inhibited cell adhesion and decreased cell viability in HaCaT cells. We concluded that the crude extract of P. stutzeri FSRS had a strong pathological effect on human skin cells. Beach visitors frequently get skin infections, but the exact cause of the infections is yet to be determined. The beach sand bacterium P. stutzeri may, therefore, be responsible for some of the dermatological problems experienced by people visiting the beach.

  7. Isolation, identification, and pathological effects of beach sand bacterial extract on human skin keratinocytes in vitro

    Directory of Open Access Journals (Sweden)

    Fazli Subhan

    2018-01-01

    Full Text Available Background Beaches are recreational spots for people. However, beach sand contains harmful microbes that affect human health, and there are no established methods for either sampling and identifying beach-borne pathogens or managing the quality of beach sand. Method This study was conducted with the aim of improving human safety at beaches and augmenting the quality of the beach experience. Beach sand was used as a resource to isolate bacteria due to its distinctive features and the biodiversity of the beach sand biota. A selected bacterial isolate termed FSRS was identified as Pseudomonas stutzeri using 16S rRNA sequencing and phylogenetic analysis, and the sequence was deposited in the NCBI GenBank database under the accession number MF599548. The isolated P. stutzeri bacterium was cultured in Luria–Bertani growth medium, and a crude extract was prepared using ethyl acetate to examine the potential pathogenic effect of P. stutzeri on human skin. A human skin keratinocyte cell line (HaCaT was used to assess cell adhesion, cell viability, and cell proliferation using a morphological analysis and a WST-1 assay. Result The crude P. stutzeri extract inhibited cell adhesion and decreased cell viability in HaCaT cells. We concluded that the crude extract of P. stutzeri FSRS had a strong pathological effect on human skin cells. Discussion Beach visitors frequently get skin infections, but the exact cause of the infections is yet to be determined. The beach sand bacterium P. stutzeri may, therefore, be responsible for some of the dermatological problems experienced by people visiting the beach.

  8. Geologic records of Pleistocene, Holocene and Anthropocene beach profiles?

    Science.gov (United States)

    Dougherty, Amy; Choi, Jeong-Heon; Dosseto, Anthony

    2017-04-01

    The Anthropocene Working Group recently concluded that we have entered a new Epoch; starting during the last century when carbon dioxide, temperatures, and sea level all exceeding previous Holocene measurements. Climate change models predict a 1m rise in sea-level by 2100 coupled with increased storm intensity. Determining how vulnerable coasts will respond to global warming in the future, requires past records of sea-level and storm impacts to be deciphered. Paying specific attention to any changes prior to, and since, the onset of the Industrial Revolution. Coastal change over centennial time-scales has long fallen within a knowledge gap that exists between our understanding of shoreline behaviour measured over decades and that inferred from the landscape over millennia. Insight on shoreline behaviour across spatial and temporal scales is gained using computers to integrate models of short-term morphodynamics along beaches with longer-term coastal landscape evolution models. However, limitations exist as process-based engineering models depend on wave climate and beach profile data that is restricted to regional/historical records, while large-scale coastal behaviour models are based on general chronostratographic data from topographic profiles, interpolated cores, and isochrons extrapolated from deep radiocarbon ages. Here we demonstrate a unique methodology combining state-of-the-art geophysics, luminescence, and remote sensing techniques on prograded barriers to extract comprehensive chronostratigraphic records. Ground Penetrating Radar (GPR) data document beach and dune stratigraphy at decimetre resolution. Optically Stimulated Luminescence (OSL) directly date the formation of paleo-beachfaces and dunes. Light Detection and Ranging (LiDAR) image the lateral extent of strandplain ridge morphology. The resulting record of paleo-beach profiles spanning from the present-day beach through Holocene and Pleistocene barriers, enables our in-depth understanding of

  9. Beach-goer behavior during a retrospectively detected algal ...

    Science.gov (United States)

    Algal blooms occur among nutrient rich, warm surface waters and may adversely impact recreational beaches. During July – September 2003, a prospective study of beachgoers was conducted on weekends at a public beach on a Great Lake in the United States. We measured each beachgoer’s activity at the start and end of their beach visit and the environmental factors: water and air temperature, wind speed and wave height at the study site each day. At the time, there was no notification of algal blooms; we retrospectively evaluated the presence of algal blooms using MERIS data from the Envisat-1 satellite. A total of 2840 people participated in the study over 16 study days. The majority (55%) were female, and 751 (26%) were < 18 years of age. An algal bloom was detected retrospectively by remotely sensed satellite imagery during August 16 – 24. This peak bloom period (PB) included 4 study days. During PB study days, more study participants 226/742 (31%) reported body contact with the water compared to contact 531/2098 (25%) on non-peak days. During the 4 PB days, of the environmental factors, only mean water temperature was significantly different, 250 C vs. 230 C (p<0.05) from other days.These results suggest that beachgoer body contact with water was not deterred by the presence of an algal bloom, and that interventions to actively discourage water contact during a bloom are needed to reduce exposure to blooms. This is an abstract of a proposed presentation and

  10. Megascale rhythmic shoreline forms on a beach with multiple bars

    Directory of Open Access Journals (Sweden)

    Zbigniew Pruszak

    2008-06-01

    Full Text Available The study, carried out in 2003 and 2006 at the Lubiatowo Coastal ResearchStation (Poland, located on the non-tidal southern Baltic coast(tidal range < 0.06 m, focused on larger rhythmic forms (mega-cusps withwavelengths in the interval 500 m > Lc > 20 m. Statistical analyses of detailed shoreline configurations were performed mostly with the Discrete Wavelet Transformmethod (DWT. The beach is composed of fine sand with grain diameter D50 ≈ 0.22 mm, which produces 4 longshore sandbars and a gently sloping seabed with β = 0.015. The analysis confirms the key role of bars in hydro- and morphodynamic surf zone processes.The hypothesis was therefore set up that, in a surf zone with multiple bars, the bars and mega-scale shoreline rhythmic forms form one integrated physical system; experimental evidence to substantiate this hypothesis was also sought.In such a system not only do self-regulation processes include swash zone phenomena, they also incorporate processes in offshore surf zone locations.The longshore dimensions of large cusps are thus related to the distances between periodically active large bed forms (bars. The spatial dimension of bar system activity (number of active bars depends, at a given time scale, on the associated hydrodynamic conditions. It was assumed that such a time scale could include either the development and duration of a storm, or a period of stable, yet distinct waves, capable of remodelling the beach configuration.The indentation to wavelength ratio of mega-cusps for the studied non-tidal dissipative environment may be one order of magnitude greater than for mesotidal, reflective beaches.

  11. Morphology and grain-size characteristics of a log-spiral beach at Nagwa (Diu), west coast of India

    Digital Repository Service at National Institute of Oceanography (India)

    Veerayya, M.; Shenoi, S.S.C.; Murty, C.S.

    Sediment samples collected along 6 beach profiles of a log-spiral shaped beach and nearby dunes have been studied for particle size distribution in relation to wave refraction patterns. The results reveal that the foreshore sediments...

  12. 33 CFR 100.740 - Annual Offshore Super Series Boat Race; Fort Myers Beach, FL.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Annual Offshore Super Series Boat Race; Fort Myers Beach, FL. 100.740 Section 100.740 Navigation and Navigable Waters COAST GUARD... Annual Offshore Super Series Boat Race; Fort Myers Beach, FL. (a) Regulated area. (1) The regulated area...

  13. 46 CFR 7.95 - St. Johns Point, FL to Miami Beach, FL.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 1 2010-10-01 2010-10-01 false St. Johns Point, FL to Miami Beach, FL. 7.95 Section 7.95 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY PROCEDURES APPLICABLE TO THE PUBLIC BOUNDARY LINES Atlantic Coast § 7.95 St. Johns Point, FL to Miami Beach, FL. (a) A line drawn from the seaward...

  14. 33 CFR 162.215 - Lake Tahoe, Nev.; restricted area adjacent to Nevada Beach.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Lake Tahoe, Nev.; restricted area adjacent to Nevada Beach. 162.215 Section 162.215 Navigation and Navigable Waters COAST GUARD, DEPARTMENT... § 162.215 Lake Tahoe, Nev.; restricted area adjacent to Nevada Beach. (a) The restricted area. The...

  15. 33 CFR 80.727 - Cape Canaveral, FL to Miami Beach, FL.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Cape Canaveral, FL to Miami Beach, FL. 80.727 Section 80.727 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND..., FL to Miami Beach, FL. (a) A line drawn across the seaward extremity of the Port Canaveral Entrance...

  16. A baseline assessment of beach debris and tar contamination in Bonaire, Southeastern Caribbean

    NARCIS (Netherlands)

    Debrot, A.O.; Rijn, van J.; Bron, P.S.; Leon, R.

    2013-01-01

    Data on beach debris and tar contamination is provided for 21 natural beach sites in Bonaire, Southeastern Caribbean. Transects amounting to a combined length of 991 m were sampled March–May 2011 and a total of 8960 debris items were collected. Highest debris and tar contamination were found on the

  17. Empowering Teachers and Students through Technology: An Interview with Sheryl Nussbaum-Beach.

    Science.gov (United States)

    Milone, Michael

    2003-01-01

    Interviews Sheryl Nussbaum-Beach, the 2002 Teacher of the Year at Virginia Beach City Public Schools. Explains how Sheryl has pushed technology to its limits in an effort to help her students push their own limits. Contends that technology provides the perfect medium for offering children the chance to build their own experiences, construct their…

  18. A simple model to predict soil moisture: Bridging Event and Continuous Hydrological (BEACH) modelling

    NARCIS (Netherlands)

    Sheikh, V.; Visser, S.M.; Stroosnijder, L.

    2009-01-01

    This paper introduces a simple two-layer soil water balance model developed to Bridge Event And Continuous Hydrological (BEACH) modelling. BEACH is a spatially distributed daily basis hydrological model formulated to predict the initial condition of soil moisture for event-based soil erosion and

  19. 33 CFR 165.1155 - Security Zone; Diablo Canyon Nuclear Power Plant, Avila Beach, California.

    Science.gov (United States)

    2010-07-01

    ... Coast Guard District § 165.1155 Security Zone; Diablo Canyon Nuclear Power Plant, Avila Beach... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Security Zone; Diablo Canyon Nuclear Power Plant, Avila Beach, California. 165.1155 Section 165.1155 Navigation and Navigable Waters...

  20. Aeolian sand transport and its effects on the stability of Miramar-Caranzalem beach

    Digital Repository Service at National Institute of Oceanography (India)

    Reddy, G.V.; Sastry, J.S.

    Removal of sand by wind from the beach at Miramar-Caranzalem, Goa, has been found to effect its stability over a relatively longer time scale. This aeolian sand transport has been computed for this strip of the beach utilising the relation between...

  1. 76 FR 30830 - Drawbridge Operation Regulation; Atlantic Intracoastal Waterway (AIWW), at Wrightsville Beach, NC...

    Science.gov (United States)

    2011-05-27

    ... their race on the opposing weekend of the Iron Man competition. As with the Iron Man race, the exact... Beach2Battleship Iron and \\1/ 2\\ Iron Triathlon and the Battleship North Carolina Half Marathon and 5K. DATES: This... held. Basis and Purpose The Beach2Battleship Iron and \\1/2\\ Iron distance Triathlon competition is an...

  2. On wave-driven "shingle" beach dynamics in a table-top Hele-Shaw cell

    NARCIS (Netherlands)

    Bokhove, Onno; van der Horn, Avraham/Bram; van der Horn, A.J.; van der Meer, Roger M.; Thornton, Anthony Richard; Zweers, W.; Lynett, P.J.

    2014-01-01

    The primary evolution of beaches by wave action takes place during storms. Beach evolution by non-linear breaking"waves is 3D, multi-scale, and involves particle-wave interactions. We will show how a novel, three-phase extension to the classic "Hele-Shaw" laboratory experiment is designed to create

  3. Impacts of Hurricanes Frances and Jeanne on Two Nourished Beaches along the Southeast Florida Coast

    NARCIS (Netherlands)

    Benedet, L.; Campbell, T.; Finkl, C.W.; Stive, M.J.F.; Spadoni, R.

    2005-01-01

    Site inspections and beacli profile surveys of nourislied beaclies in the city of Boca Raton, and Town of Palm Beach, Florida show that the nourished beaches protected the shore from hurricane impacts in 2004. Striking the southeast coast of Florida within 20 days of each other. Hurricane Frances

  4. Diversity of Sarcosaprophagous Calyptratae (Diptera) on Sandy Beaches Exposed to Increasing Levels of Urbanization in Brazil.

    Science.gov (United States)

    Barbosa, Taciano Moura; Carmo, Rodrigo Felipe Rodrigues; Silva, Leonardo Pereira; Sales, Raissa Guerra; Vasconcelos, Simao Dias

    2017-06-01

    Sandy beaches are among the most impacted ecosystems worldwide, and the effects of urbanization on the biodiversity of these habitats are largely unknown, particularly in Brazil. We investigated the composition and structure of assemblages of sarcosaprophagous insects (Diptera: Calliphoridae, Sarcophagidae, and Muscidae) on six sandy beaches exposed to differential levels of human impact in Pernambuco State, Brazil. In total, 20,672 adults of 40 species were collected, of which 70% were Calliphoridae. Sarcophagidae had the highest diversity with 26 species of nine genera. A strong overlap in the composition of the assemblages across the six beaches was observed, with only a few species being restricted to one type of beach. The flesh flies Dexosarcophaga carvalhoi (Lopes), Peckia intermutans (Walker), and Titanogrypa larvicida (Lopes) occurred exclusively in beaches under low anthropogenic impact. Species with strong medical and veterinary importance such as Synthesiomyia nudiseta (Wulp) occurred even in beaches under low human presence. The invasive species Chrysomya albiceps (Wiedemann) and Chrysomya megacephala (F.) (Calliphoridae) were dominant in all beaches, which exposes the vulnerability of sandy beaches to exotic species. Our data imply that sarcosaprophagous flies can be used as early biological indicators to suggest urbanization in coastal environments. © The Authors 2017. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

  5. Effects of the nuisance algae, Cladophora, on Escherichia coli at recreational beaches in Wisconsin.

    Science.gov (United States)

    Englebert, Erik T; McDermott, Colleen; Kleinheinz, Gregory T

    2008-10-01

    Recreational beaches constitute a large part of the 12 billion dollar per year tourism industry in Wisconsin. Beach closures due to microbial contamination are costly in terms of lost tourism revenue and adverse publicity for an area. Escherichia coli (E. coli), is used as an indicator of microbial contamination, as high concentrations of this organism should indicate a recent fecal contamination event that may contain other, more pathogenic, bacteria. An additional problem at many beaches in the state is the nuisance algae, Cladophora. It has been hypothesized that mats of Cladophora may harbor high concentrations of E. coli. Three beaches in Door County, WI were selected for study, based on tourist activity and amounts of algae present. Concentrations of E. coli were higher within Cladophora mats than in surrounding water. Beaches displayed an E. coli concentration gradient in water extending away from the Cladophora mats, although this was not statistically significant. Likewise, the amount of Cladophora observed on a beach did not correlate with E. coli concentrations found in routine beach monitoring samples. More work is needed to determine the impact of mats of Cladophora on beach water quality, as well as likely sources of E. coli found within the mats.

  6. Cardiovascular consequence of reclining vs. sitting beach-chair body position for induction of anesthesia.

    Science.gov (United States)

    Larsen, Søren L; Lyngeraa, Tobias S; Maschmann, Christian P; Van Lieshout, Johannes J; Pott, Frank C

    2014-01-01

    The sitting beach-chair position is regularly used for shoulder surgery and anesthesia may be induced in that position. We tested the hypothesis that the cardiovascular challenge induced by induction of anesthesia is attenuated if the patient is placed in a reclining beach-chair position. Anesthesia was induced with propofol in the sitting beach-chair (n = 15) or with the beach-chair tilted backwards to a reclining beach-chair position (n = 15). The last group was stepwise tilted to the sitting beach-chair position prior to surgery. Hypotension was treated with ephedrine. Continuous hemodynamic variables were recorded by photoplethysmography and frontal cerebral oxygenation (ScO2) by near infrared spectroscopy. Significant differences were only observed immediately after the induction when patients induced in a reclining beach-chair position had higher mean arterial pressure (MAP) (35 ± 12 vs. 45 ± 15 % reduction from baseline, p = 0.04) and ScO2 (7 ± 6 vs. 1 ± 8% increase from baseline, p = 0.02) and received less ephedrine (mean: 4 vs. 13 mg, p = 0.048). The higher blood pressure and lower need of vasopressor following induction of anesthesia in the reclining compared to the sitting beach-chair position indicate more stable hemodynamics with the clinical implication that anesthesia should not be induced with the patient in the sitting position.

  7. XYZ point data - Post Hurricane Sandy Beach Profile Survey Fire Island Inlet to Moriches Inlet 2013

    Data.gov (United States)

    Department of the Interior — The U.S. Army Corps of Engineers(USACE) contracted a beach survey of Fire Island, New York from September 17–October 6, 2013, for the purpose of planning a beach...

  8. 76 FR 28130 - Coastal Bank, Cocoa Beach, Florida; Notice of Appointment of Receiver

    Science.gov (United States)

    2011-05-13

    ... DEPARTMENT OF THE TREASURY Office of Thrift Supervision Coastal Bank, Cocoa Beach, Florida; Notice of Appointment of Receiver Notice is hereby given that, pursuant to the authority contained in... Federal Deposit Insurance Corporation as sole Receiver for Coastal Bank, Cocoa Beach, Florida, (OTS No...

  9. Electron cyclotron instability of a beam-plasma system immersed in a magnetic beach

    Energy Technology Data Exchange (ETDEWEB)

    Varandas, C.A.F.; Cabral, J.A.C.

    1982-03-01

    The linear development of the electron cyclotron instability of a beam-plasma system in a magnetic beach is studied. Beaches of positive as well as negative B-field gradients are considered. The experimental results concerning the excited instability spectra are interpreted in terms of local dispersion analysis.

  10. Watershed Assessment with Beach Microbial Source Tracking and Outcomes of Resulting Gull Management.

    Science.gov (United States)

    Goodwin, Kelly D; Gruber, Steve; Vondrak, Mary; Crumpacker, Andrea

    2016-09-20

    Total maximum daily load (TMDL) implementation at a southern California beach involved ultraviolet treatment of watershed drainage that provided >97% reduction in fecal indicator bacteria (FIB) concentrations. However, this pollutant control measure did not provide sufficient improvement of beach water quality, prompting further assessment. Investigation included microbial source tracking (MST) for human, gull, and canine fecal sources, monitoring of enterococci and fecal coliform, and measurement of chemical and physical water quality parameters for samples collected from watershed, groundwater, and beach sites, including a beach scour pond and tidal creek. FIB variability remained poorly modeled in regression analysis. However, MST revealed correlations between FIB and gull source tracking markers, leading to recommendations to manage gulls as a pollutant source. Beach conditions were followed for three years after implementation of a best management practice (BMP) to abate gulls using a falconry program for the beach and an upland landfill. The gull abatement BMP was associated with improved beach water quality, and this appears to be the first report of falconry in the context of TMDL implementation. Overall, MST data enabled management action despite an inability to fully model FIB dynamics in the coupled watershed-beach system.

  11. Can persuasive and demonstrative messages to visitors reduce littering in river beaches?

    Science.gov (United States)

    Cingolani, Ana M; Barberá, Iván; Renison, Daniel; Barri, Fernando R

    2016-12-01

    Littering of public areas is a significant problem worldwide. Here we evaluate the success of persuasive and demonstrative messages at reducing littering in highly visited river beaches in Argentina. We made an intervention at the beaches which consisted of a personalized verbal request asking visitors to take their litter to the waste cans (persuasive message) while they were exposed to the example of picking up the litter already left on the beach (demonstrative message). We conducted 102 observations distributed over 29 dates, two years and four beaches. Each observation consisted of three or four rounds: before the presence of visitors we cleaned the beaches, during the stay of visitors we made the intervention (once or twice) in two out of the four beaches, and early next morning we estimated the amount of litter left per beach. Litter weight ranged from 0 to 53gvisitor -1 day -1 . Littering per visitor was reduced an average of 35% due to the intervention (p=0.049). We also found differences among beaches (p=0.001), and an increase in littering with crowding (p=0.005). We show for the first time that the personalized request combined with the example of picking up litter is effective in reducing littering in a Latin American country. Copyright © 2016. Published by Elsevier Ltd.

  12. VOLUMETRIC METHOD FOR EVALUATION OF BEACHES VARIABILITY BASED ON GIS-TOOLS

    Directory of Open Access Journals (Sweden)

    V. V. Dolotov

    2015-01-01

    Full Text Available In frame of cadastral beach evaluation the volumetric method of natural variability index is proposed. It base on spatial calculations with Cut-Fill method and volume accounting ofboththe common beach contour and specific areas for the each time.

  13. A Conceptual Model for Spatial Grain Size Variability on the Surface of and within Beaches

    Directory of Open Access Journals (Sweden)

    Edith Gallagher

    2016-05-01

    Full Text Available Grain size on the surface of natural beaches has been observed to vary spatially and temporally with morphology and wave energy. The stratigraphy of the beach at Duck, North Carolina, USA was examined using 36 vibracores (~1–1.5 m long collected along a cross-shore beach profile. Cores show that beach sediments are finer (~0.3 mm and more uniform high up on the beach. Lower on the beach, with more swash and wave action, the sand is reworked, segregated by size, and deposited in layers and patches. At the deepest measurement sites in the swash (~−1.4 to −1.6 m NAVD88, which are constantly being reworked by the energetic shore break, there is a thick layer (60–80 cm of very coarse sediment (~2 mm. Examination of two large trenches showed that continuous layers of coarse and fine sands comprise beach stratigraphy. Thicker coarse layers in the trenches (above mean sea level are likely owing to storm erosion and storm surge elevating the shore break and swash, which act to sort the sediment. Those layers are buried as water level retreats, accretion occurs and the beach recovers from the storm. Thinner coarse layers likely represent similar processes acting on smaller temporal scales.

  14. 78 FR 31840 - Safety Zone; USO Patriotic Festival Air Show, Atlantic Ocean; Virginia Beach, VA

    Science.gov (United States)

    2013-05-28

    ...-AA00 Safety Zone; USO Patriotic Festival Air Show, Atlantic Ocean; Virginia Beach, VA AGENCY: Coast... provide for the safety of life on navigable waters during the USO Patriotic Festival Air Show. This action... Patriotic Festival Air Show, Atlantic Ocean; Virginia Beach, VA. (a) Regulated Area. The following area is a...

  15. Staphylococcus aureus and methicillin-resistant S. aureus (MRSA) at ambient freshwater beaches

    Science.gov (United States)

    Fogarty, Lisa R.; Haack, Sheridan K.; Johnson, Heather E.; Brennan, Angela K.; Isaacs, Natasha M.; Spencer, Chelsea

    2015-01-01

    Methicillin-resistant Staphylococcus aureus (MRSA) are a threat to human health worldwide, and although detected at marine beaches, they have been largely unstudied at freshwater beaches. Genes indicating S. aureus (SA; femA) and methicillin resistance (mecA) were detected at 11 and 12 of 13 US Great Lakes beaches and in 18% or 27% of 287 recreational water samples, respectively. Eight beaches had mecA + femA (potential MRSA) detections. During an intensive study, higher bather numbers, staphylococci concentrations, and femA detections were found in samples collected after noon than before noon. Local population density, beach cloud cover, and beach wave height were significantly correlated with SA or MRSA detection frequency. The Panton-Valentine leukocidin gene, associated with community-acquired MRSA, was detected in 12 out of 27 potential MRSA samples. The femA gene was detected less frequently at beaches that met US enterococci criteria or EU enterococci ‘excellent’ recreational water quality, but was not related to Escherichia coli-defined criteria. Escherichia coli is often the only indicator used to determine water quality at US beaches, given the economic and healthcare burden that can be associated with infections caused by SA and MRSA, monitoring of recreational waters for non-fecal bacteria such as staphylococci and/or SA may be warranted.

  16. 33 CFR 263.26 - Small beach erosion control project authority (Section 103).

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 3 2010-07-01 2010-07-01 false Small beach erosion control project authority (Section 103). 263.26 Section 263.26 Navigation and Navigable Waters CORPS OF ENGINEERS....26 Small beach erosion control project authority (Section 103). (a) Legislative authority. Section...

  17. The electron cyclotron instabiity of a beam-plasma system immersed in a magnetic beach

    International Nuclear Information System (INIS)

    Varandas, C.A.F.; Cabral, J.A.C.

    1982-01-01

    The linear development of the electron cyclotron instability of a beam-plasma system in a magnetic beach is studied. Beaches of positive as well as negative B-field gradients are considered. The experimental results concerning the excited instability spectra are interpreted in terms of local dispersion analysis. (Author) [pt

  18. Predicting E. Coli and Enterococci Concentrations in the South Fork Broad River Watershed Using Virtual Beach

    Science.gov (United States)

    Virtual Beach (VB) is a decision support tool that constructs site-specific statistical models to predict fecal indicator bacteria (FIB) at locations of exposure. Although primarily designed for making decisions regarding beach closures or issuance of swimming advisories based on...

  19. Beach-ridge architecture constrained by beach topography and Ground-Penetrating Radar, Itilleq (Lakse Bugt), Disko, Greenland – Implications for sea-level reconstructions

    DEFF Research Database (Denmark)

    Emerich Souza, Priscila; Kroon, Aart; Nielsen, Lars

    2018-01-01

    Detailed topographical data and high-resolution ground-penetrating radar (GPR) reflection data are presented from the present-day beach and across successive raised beach-ridges at Itilleq (Disko, West Greenland). In the western part of our study area, the present low-tide level is well-marked by......Detailed topographical data and high-resolution ground-penetrating radar (GPR) reflection data are presented from the present-day beach and across successive raised beach-ridges at Itilleq (Disko, West Greenland). In the western part of our study area, the present low-tide level is well...... on observations of the active shoreface regime, large clasts are interpreted to give rise to scattering observed near the top of the deeper radar unit. We regard the down-lap points located at this radar boundary as markers of palaeo low-tide level. In some places, scattering hyperbolas are more pronounced...

  20. Beach dynamics and oscillations of shoreline position in recent years at Miramar Beach, Goa, India: a study from a GPR survey.

    Digital Repository Service at National Institute of Oceanography (India)

    Loveson, V.J.; Gujar, A.R.; Iyer, S.D.; Udayaganesan, P.; Luis, R.A.A.; Gaonkar, S.S.; Chithrabhanu, P.; Tirodkar, G.; Singhvi, A.K.

    Consideration of human influences is crucial to understanding the coastal sediment supply and associated shoreline responses prior to undertaking coastal hazard management studies. Observation of the widening of some selected Indian beaches...

  1. Evaluation of beach grooming techniques on Escherichia coli density in foreshore sand at North Beach, Racine, WI

    Science.gov (United States)

    Kinzelman, Julie L.; Whitman, Richard L.; Byappanahalli, Muruleedhara N.; Jackson, Emma; Bagley, Robert C.

    2003-01-01

    Elevated levels of Escherichia coli(E. coli) in bathing waters at North Beach, a popular recreational site in Racine, Wisconsin, have been a persistent problem often resulting in the issuance of poor water quality advisories. Moreover, waterfowl (mostly Larus delawarensis and L. argentatus) in nearshore and offshore areas are common and may serve as non-point sources for bacterial contamination of recreational waters. Current beach management practice involves daily mechanical grooming of the nearshore sand for aesthetics and removal of hazardous debris. However, this practice has not been evaluated in terms of its effects on E. coli loading to beach sand and potential introduction to contiguous swimming water. In this study, we tested E. coli responses to three treatments: mechanical groomer, daily and twice weekly hand raking, and a control (no raking/grooming). A randomized block design consisted of replicated treatments and one control (10 each), for a total of 40 blocks sampled daily for 10 days. Foreshore sand samples were collected by hand coring to an average depth of 10 cm. Median E. colirecovered were 73 (mechanically groomed), 27 (hand-raked daily), 32 (hand-raked twice weekly), and 22 (control) colony-forming units (CFU) per gram dry weight sand. E. colicounts in sand that was groomed were significantly higher than hand rakings and control (p management implications related to grooming efficacy and the importance of understanding non-point sources of bacterial contamination.

  2. Evaluation of beach grooming techniques on Escherichia coli density in foreshore sand at North Beach, Racine, WI

    Science.gov (United States)

    Kinzelman, Julie L.; Whitman, Richard L.; Byappanahalli, Muruleedhara N.; Jackson, Emma; Bagley, Robert C.

    2003-01-01

    Elevated levels of Escherichia coli(E. coli) in bathing waters at North Beach, a popular recreational site in Racine, Wisconsin, have been a persistent problem often resulting in the issuance of poor water quality advisories. Moreover, waterfowl (mostly Larus delawarensis and L. argentatus) in nearshore and offshore areas are common and may serve as non-point sources for bacterial contamination of recreational waters. Current beach management practice involves daily mechanical grooming of the nearshore sand for aesthetics and removal of hazardous debris. However, this practice has not been evaluated in terms of its effects on E. coli loading to beach sand and potential introduction to contiguous swimming water. In this study, we tested E. coli responses to three treatments: mechanical groomer, daily and twice weekly hand raking, and a control (no raking/grooming). A randomized block design consisted of replicated treatments and one control (10 each), for a total of 40 blocks sampled daily for 10 days. Foreshore sand samples were collected by hand coring to an average depth of 10 cm. Median E. colirecovered were 73 (mechanically groomed), 27 (hand-raked daily), 32 (hand-raked twice weekly), and 22 (control) colony-forming units (CFU) per gram dry weight sand. E. colicounts in sand that was groomed were significantly higher than hand rakings and control (p grooming efficacy and the importance of understanding non-point sources of bacterial contamination.

  3. Quantitative analysis of plastic debris on recreational beaches in Mumbai, India.

    Science.gov (United States)

    Jayasiri, H B; Purushothaman, C S; Vennila, A

    2013-12-15

    Plastic litter was quantified on four sandy beaches in Mumbai. The mean abundance of 7.49 g and 68.83 items per square metre was recorded. The abundance of plastics significantly varied among the beaches showing an increasing trend in the southern part. The abundance of plastics by weight in Dadar was significantly higher than that in Aksa. The size fractionation of plastics proved that small particles (1-20 mm) are predominant with 41.85% microplastics (1-5 mm) which emphasizes the high risk to marine organisms due to possible ingestion. The highest quantity of microplastics was seen in Juhu beach (55.33%) followed by Versova, Aksa and Dadar. The major contributing factors for the abundance are beach usage for different activities such as recreational, religious and fishing which suggest that the land-based sources provide major inputs to plastic pollution in these beaches. Copyright © 2013 Elsevier Ltd. All rights reserved.

  4. The Geomorphic System and the Effects of Human Interference at Gold Coast Beach in Tainan, Taiwan

    Science.gov (United States)

    Lin, Tsung-Yi

    2017-04-01

    The Gold Coast beach in Tainan, Taiwan, located between Anping harbor and Ur-Jen river mouth, is the subject of this study, which characterizes the beach's geomorphic system through the analysis of information such as sediment grain size, mineral composition, and periodic measurements of morphological changes of the beach. Based upon such characterizations, further analysis is conducted on the effects that human activities of the last 15 years have upon the geomorphic changes within the Gold Coast beach. The study shows that the median grain size of the Gold Coast beach's sediment is medium sand. The mineral composition includes mainly slate fragments and quartz grains, with small amounts of feldspar, sandstone and shell fragments. Based on a comprehensive study of the longshore distribution of beach sediment size and mineral composition of southwestern coast of Taiwan, as well as, the long-term, monitored data of waves, tides, and currents in this region, we conclude that the main process responsible for the sand accumulation at Gold Coast beach is the prevailing longshore sand transport from south to north. The southern breakwater of Anping harbor plays a role in intercepting the longshore transport sand and helps form the beach. Since the Ur-Jen river flows through a mudstone region, the suspended sediment plume during the flood season does not provide much sediment source to the sandy beach. A monthly beach profile survey project conducted between the years 1999 to 2000 revealed that the beach elevation and width had experienced an obvious seasonal change. The beach widened during the winter, but narrowed in the summer due to typhoon wave erosion. When the subaerial beach was eroded, a submerged longshore bar that was oriented almost parallel to the shoreline had formed at a distance about 400-600 meter away. With this observation, we can conclude that beach morphology is also influenced by various seasonal wave actions that affect onshore and offshore sand

  5. Coastal processes study at Ocean Beach, San Francisco, CA: summary of data collection 2004-2006

    Science.gov (United States)

    Barnard, Patrick L.; Eshleman, Jodi; Erikson, Li H.; Hanes, Daniel M.

    2007-01-01

    Ocean Beach in San Francisco, California, contains a persistent erosional section in the shadow of the San Francisco ebb tidal delta and south of Sloat Boulevard that threatens valuable public infrastructure as well as the safe recreational use of the beach. Coastal managers have been discussing potential mediation measures for over a decade, with little scientific research available to aid in decision making. The United States Geological Survey (USGS) initiated the Ocean Beach Coastal Processes Study in April 2004 to provide the scientific knowledge necessary for coastal managers to make informed management decisions. This study integrates a wide range of field data collection and numerical modeling techniques to document nearshore sediment transport processes at the mouth of San Francisco Bay, with emphasis on how these processes relate to erosion at Ocean Beach. The Ocean Beach Coastal Processes Study is the first comprehensive study of coastal processes at the mouth of San Francisco Bay.

  6. Perceptions of the risk of drowning at surf beaches among New Zealand youth.

    Science.gov (United States)

    Willcox-Pidgeon, Stacey; Kool, Bridget; Moran, Kevin

    2018-02-08

    In many countries, beaches are a high-risk location for drowning. In New Zealand, youth and young adults are particularly at risk of drowning at beaches, accounting for 17.4% of drowning deaths and 18.4% of rescues at surf beaches between 2008 and 2013, over 90% of fatalities were male. This study explored New Zealand youth risk perceptions of drowning and their coping appraisal processes at a surf beach. A cross-sectional survey of high school students (n = 599) was conducted between February and April 2014. Females and non-New Zealand European students reported higher levels of perceived vulnerability and severity of drowning risk, and New Zealand European students reported higher levels of self-efficacy of preventive actions. By addressing the underlying causes of underestimation of risk and overestimation of ability, these findings can be utilized to increase awareness and to enhance water safety risk strategies for youth, especially males, in the surf beach setting.

  7. Litter burial and exhumation: spatial and temporal distribution on a cobble pocket beach.

    Science.gov (United States)

    Williams, A T; Tudor, D T

    2001-11-01

    A cobble beach (-6 diameter to -8 diameter) located on the South Wales coastline, UK, was studied over a three-month winter period to assess litter input levels. After total beach litter clearance, six surveys were conducted at consecutive spring tides which involved marking of previously unrecorded litter. The beach was soon inundated with debris, predominantly plastic beverage containers. Some marked litter was found to disappear from the beach surface, re-emerging weeks later which suggests that the potential for litter burial has been underestimated in litter research. Higher wave energies between surveys coincided with higher levels of previously unseen litter. These new inputs consisted of sea borne and exhumed litter. Items larger than the surrounding cobbles were found to work their way back to the surface of the beach after burial, smaller items remained buried. Pits dug into the cobble ridge confirmed the burial of mainly small items.

  8. 76 FR 47441 - Safety Zone; Apache Pier Labor Day Weekend Fireworks Display, Atlantic Ocean, Myrtle Beach, SC

    Science.gov (United States)

    2011-08-05

    ... Display, Atlantic Ocean, Myrtle Beach, SC AGENCY: Coast Guard, DHS. ACTION: Temporary final rule. SUMMARY... vicinity of Apache Pier in Myrtle Beach, South Carolina during a Labor Day weekend fireworks display on... fireworks display is scheduled to take place in Myrtle Beach, South Carolina. The fireworks will be launched...

  9. 77 FR 2966 - Rock River Beach, Inc.; Notice of Application Tendered for Filing With the Commission and...

    Science.gov (United States)

    2012-01-20

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Project No. 14345-000] Rock River Beach.... c. Filing Date: January 5, 2012. d. Applicant: Rock River Beach, Inc. e. Name of Project: Rock River Beach Hydroelectric Project. f. Location: On the Rock River, in the Township of Onota, Alger County...

  10. 77 FR 73636 - Rock River Beach, Inc.; Notice of Application Tendered for Filing With the Commission and...

    Science.gov (United States)

    2012-12-11

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Project No. 14345-001] Rock River Beach.... c. Date filed: November 23, 2012. d. Applicant: Rock River Beach, Inc. e. Name of Project: Rock River Beach Hydroelectric Project. f. Location: On the Rock River, in the Town of Onota, Alger County...

  11. 76 FR 26931 - Safety Zone; Second Annual Space Coast Super Boat Grand Prix, Atlantic Ocean, Cocoa Beach, FL

    Science.gov (United States)

    2011-05-10

    ...-AA00 Safety Zone; Second Annual Space Coast Super Boat Grand Prix, Atlantic Ocean, Cocoa Beach, FL... temporary safety zone on the waters of the Atlantic Ocean east of Cocoa Beach, Florida during the Second... Atlantic Ocean east of Cocoa Beach, Florida. Approximately 30 high-speed power boats will be participating...

  12. Characterizing storm response and recovery using the beach change envelope: Fire Island, New York

    Science.gov (United States)

    Brenner, Owen T.; Lentz, Erika; Hapke, Cheryl J.; Henderson, Rachel; Wilson, Kathleen; Nelson, Timothy

    2018-01-01

    Hurricane Sandy at Fire Island, New York presented unique challenges in the quantification of storm impacts using traditional metrics of coastal change, wherein measured changes (shoreline, dune crest, and volume change) did not fully reflect the substantial changes in sediment redistribution following the storm. We used a time series of beach profile data at Fire Island, New York to define a new contour-based morphologic change metric, the Beach Change Envelope (BCE). The BCE quantifies changes to the upper portion of the beach likely to sustain measurable impacts from storm waves and capture a variety of storm and post-storm beach states. We evaluated the ability of the BCE to characterize cycles of beach change by relating it to a conceptual beach recovery regime, and demonstrated that BCE width and BCE height from the profile time series correlate well with established stages of recovery. We also investigated additional applications of this metric to capture impacts from storms and human modification by applying it to several post-storm historical datasets in which impacts varied considerably; Nor'Ida (2009), Hurricane Irene (2011), Hurricane Sandy (2012), and a 2009 community replenishment. In each case, the BCE captured distinctive upper beach morphologic change characteristic of these different beach building and erosional events. Analysis of the beach state at multiple profile locations showed spatial trends in recovery consistent with recent morphologic island evolution, which other studies have linked with sediment availability and the geologic framework. Ultimately we demonstrate a new way of more effectively characterizing beach response and recovery cycles to evaluate change along sandy coasts.

  13. Temporal and spatial variation in bird and human use of beaches in southern California.

    Science.gov (United States)

    Lafferty, Kevin D; Rodriguez, Donald A; Chapman, Angela

    2013-12-01

    Southern California's beaches can support a remarkable diversity of birds along the Pacific Flyway. We asked whether seasonal, annual, and spatial factors affect bird richness and abundance on public beaches. To do so, we conducted three years of monthly bird surveys on 12 sandy beaches in Ventura California. Across all surveys, we counted 22 shorebird species, 8 gull species, 24 other water bird species, and 24 landbird species. Sanderling, western gull, Heerman's gull, willet, marbled godwit, and whimbrel were the most abundant members of the bird community. Beach wrack was uncommon, particularly where beaches were groomed, and did not have a large effect on bird abundance, though it was positively associated with overall bird richness. Beaches near estuaries tended to be wide, and such beaches had a higher richness and abundance of birds. Beaches with shallow slopes tended to have more gulls and shorebirds. People and (illegal) unleashed dogs were common, particularly at beaches fronted by houses. The abundance and richness of shorebirds and the richness of other waterbirds was lower where human activity was high. Bird richness and abundance was strongly affected by season, with the highest density of birds being seen during the fall shorebird migration. Gull abundance peaked earlier (August-September) than shorebird abundance (October through December). A brief pulse of shorebirds also occurred in May due to spring migration. Comparing these data with surveys in the 1990's found no evidence for a decline in shorebirds over time, though black-bellied plover appear to still be recovering from the strong 1997-1998 ENSO. Opportunities to conserve birds on these beaches are limited, but could include enforcing leash laws and setting up human exclosures near estuary mouths.

  14. Local scale processes drive long-term change in biodiversity of sandy beach ecosystems.

    Science.gov (United States)

    Schooler, Nicholas K; Dugan, Jenifer E; Hubbard, David M; Straughan, Dale

    2017-07-01

    Evaluating impacts to biodiversity requires ecologically informed comparisons over sufficient time spans. The vulnerability of coastal ecosystems to anthropogenic and climate change-related impacts makes them potentially valuable indicators of biodiversity change. To evaluate multidecadal change in biodiversity, we compared results from intertidal surveys of 13 sandy beaches conducted in the 1970s and 2009-11 along 500 km of coast (California, USA). Using a novel extrapolation approach to adjust species richness for sampling effort allowed us to address data gaps and has promise for application to other data-limited biodiversity comparisons. Long-term changes in species richness varied in direction and magnitude among beaches and with human impacts but showed no regional patterns. Observed long-term changes in richness differed markedly among functional groups of intertidal invertebrates. At the majority (77%) of beaches, changes in richness were most evident for wrack-associated invertebrates suggesting they have disproportionate vulnerability to impacts. Reduced diversity of this group was consistent with long-term habitat loss from erosion and sea level rise at one beach. Wrack-associated species richness declined over time at impacted beaches (beach fill and grooming), despite observed increases in overall intertidal richness. In contrast richness of these taxa increased at more than half (53%) of the beaches including two beaches recovering from decades of off-road vehicle impacts. Over more than three decades, our results suggest that local scale processes exerted a stronger influence on intertidal biodiversity on beaches than regional processes and highlight the role of human impacts for local spatial scales. Our results illustrate how comparisons of overall biodiversity may mask ecologically important changes and stress the value of evaluating biodiversity change in the context of functional groups. The long-term loss of wrack-associated species, a key

  15. The effects of beach nourishment on benthic invertebrates in eastern Australia: impacts and variable recovery.

    Science.gov (United States)

    Schlacher, Thomas A; Noriega, Rocio; Jones, Alan; Dye, Theresa

    2012-10-01

    Beach erosion is likely to accelerate, driven by predicted consequences of climate change and coastal development. Erosion is increasingly combated by beach nourishment, adding sand to eroding shores. Because a range of engineering techniques exists to nourish beaches, and because these techniques differ in their environmental effects, assessments of ecological impacts need to be tailored and specific. Here we report on impacts and recovery of benthic invertebrates impacted by beach nourishment operations undertaken at Palm Beach (SE Queensland, Australia). Assessments are made based on a beyond-BACI design, where samples were taken once before nourishment and twice afterwards at the impact and two control sites. Because almost all of the sand was deposited on the upper beach and later moved with bulldozers down-shore, we specifically examined whether the effects of nourishment varied at different heights of the beach-a little-studied question which has management implications. Impacts on the fauna were massive on the upper and middle levels of the beach: samples collected two days after the conclusion of nourishment were entirely devoid of all invertebrate life ('azoic'), whereas weaker effects of nourishment were detectable on the lower shore. Recovery after five months also varied between shore levels. The sediment of the upper level near the dunes remained azoic, the fauna of the middle shore had recovered partially, and the lower level had recovered in most respects. These findings indicate that the height and position of sand placement are important. For example, rather than depositing fill sand on the intertidal beach, it could be placed in the shallow subtidal zone, followed by slow up-shore accretion driven by hydrodynamic forces. Alternatively, techniques that spread the fill sand in thin layers (to minimize mortality by burial) and leave unfilled intertidal refuge islands (to provide colonists) may minimize the ecological impacts of beach nourishment

  16. Temporal variability of benthic macrofauna on Cassino beach, southernmost Brazil

    Directory of Open Access Journals (Sweden)

    Luciano P. das Neves

    2008-03-01

    Full Text Available The temporal variability of benthic macrofauna on Cassino beach, southernmost Brazil, was studied for a period of one year (June 2004 to May 2005 based on monthly sampling. Three sites were selected distant 50m from each other. At each site, 3 transects were established, 2m equidistant from one another. Each transect extended from the base of the primary dunes to the inner surf zone at approximately 1m in depth, with 7 or 8 sampling levels. Within transects, the distance between the levels was 20m until the upper swash zone, from which distance was 10m until the 1-meter isobath. The temporal variation in the abundance of benthic macrofauna observed in the present study can be attributed to (1 the positive effects of the recruitment peaks and migration of particular species to the swash zone and (2 negative effects of the migration of some species to deeper waters, as well (3 as mortality through natural causes (stranding and action of predators and (4 human causes (harvesting and vehicle transit. We attribute the expressive abundance increase of benthic macrofauna to recruitment. The stranding, that is, the trapping of the organisms on the upper parts of the beach, is likely the main cause of abrupt drops in benthic macrofauna abundance.

  17. Role of beach morphology in wave overtopping hazard assessment

    Science.gov (United States)

    Phillips, Benjamin; Brown, Jennifer; Bidlot, Jean-Raymond; Plater, Andrew

    2017-04-01

    Understanding the role of beach morphology in controlling wave overtopping volume will further minimise uncertainties in flood risk assessments at coastal locations defended by engineered structures worldwide. XBeach is used to model wave overtopping volume for a 1:200 yr joint probability distribution of waves and water levels with measured, pre- and post-storm beach profiles. The simulation with measured bathymetry is repeated with and without morphological evolution enabled during the modelled storm event. This research assesses the role of morphology in controlling wave overtopping volumes for hazardous events that meet the typical design level of coastal defence structures. Results show disabling storm-driven morphology under-represents modelled wave overtopping volumes by up to 39% under high Hs conditions, and has a greater impact on the wave overtopping rate than the variability applied within the boundary conditions due to the range of wave-water level combinations that meet the 1:200 yr joint probability criterion. Accounting for morphology in flood modelling is therefore critical for accurately predicting wave overtopping volumes and the resulting flood hazard and to assess economic losses.

  18. Scale-dependent interactions and community structure on cobble beaches.

    Science.gov (United States)

    van de Koppel, Johan; Altieri, Andrew H; Silliman, Brian R; Bruno, John F; Bertness, Mark D

    2006-01-01

    Recent theory suggests that scale-dependent interaction between facilitation and competition can generate spatial structure in ecological communities. The application of this hypothesis, however, has been limited to systems with little underlying heterogeneity. We evaluated this prediction in a plant community along an intertidal stress gradient on cobble beaches in Rhode Island, USA. Prior studies have shown that Spartina alterniflora facilitates a forb-dominated community higher in the intertidal by modifying the shoreline environment. We tested the hypothesis that, at a smaller scale, Spartina competitively excludes forb species, explaining their marked absence within the lower Spartina zone. Transplant experiments showed forb species grow significantly better in the Spartina zone when neighbours were removed. Removal of the Spartina canopy led to a massive emergence of annual forbs, showing that competition limits local occupation. These findings indicate that interaction of large-scale facilitation and small-scale competition drives plant zonation on cobble beaches. This study is the first to provide empirical evidence of scale-dependent interactions between facilitation and competition spatially structuring communities in heterogeneous environments.

  19. Heterospecific sociality of birds on beaches from southeastern Brazil

    Directory of Open Access Journals (Sweden)

    César Cestari

    2009-12-01

    Full Text Available Studies on the sociality of heterospecific assemblages of birds have promoted a greater understanding of the types of interactions and survivorship between coexisting species. This study verified the group compositions in bird assemblages and analyzed the sociality of migratory and resident species on sandy beaches of southeastern Brazil. A transect was established on the median portion of beaches and all the groups of bird species (monospecific, heterospecific and solitary individuals were registered four days per month from November 2006 to April 2007. The sociality of each species was calculated by its frequency in heterospecific groups, its proportional number of contacts with other species in heterospecific groups, and the number of species that it associated with. Semipalmated Sandpiper Calidris pusilla (Linnaeus, 1766 and Semipalmated Plover Charadrius semipalmatus Bonaparte, 1825 (both migratory had the highest degree of sociality and did not show a preference to associate with either residents or migratory species. Sanderling Calidris alba (Pallas, 1764 (migratory occupied the third position in the sociality rank and associated with migratory species frequently. Southern Caracara Carara plancus (Miller, 1777 and Black Vulture Coragyps atratus (Beschstein, 1793 (both resident were uniquely found among heterospecific groups with necrophagous and resident species. Kelp Gull Larus dominicanus Lichtenstein, 1823 (resident associated more frequently with resident species. The sociality in assemblages of birds may promote advantages such as an increased collective awareness in dangerous situations and indication of sites with abundant food sources.

  20. Mineralogical characterization of beach sand minerals: traditional and modern approaches

    International Nuclear Information System (INIS)

    Krishnamurthy, P.

    2016-01-01

    Precise identification of beach sand minerals is an essential prerequisite for the reserve estimation of a given deposit and also in the subsequent evaluation of the process flow sheet for its optimal recovery. Traditional methods that are used for the identification of the beach sand minerals such as magnetite, hematite, ilmenite, rutile, anatase, zircon, garnet, sillimanite, monazite, quartz and others include heavy liquid separation (bromoform and methylene iodide) and studying the optical properties of the grains from different fractions so as to identify the specific phases in a sample. Grain counting of specific minerals from a given sievefraction under a petrological microscope to estimate the mode and their subsequent conversion in to weight percent fractions forms the critical second stage that is followed by the reserve estimates. These methodologies are tedious and time consuming often involving a few days for a single sample. The paper introduces the numerous instrumental methods (XRF, XRD - Rietveld and CCSEM) of mineral speciation and their qualification in with case studies from the west coast deposits in India

  1. The palm weevil Rhynchophorus vulneratus is eradicated from Laguna Beach

    Directory of Open Access Journals (Sweden)

    Mark S. Hoddle

    2016-09-01

    Full Text Available In October 2010, Rhynchophorus vulneratus, originally identified as the red palm weevil, R. ferrugineus, was discovered infesting Canary Island date palms in Laguna Beach, California. The red palm weevil has caused extensive mortality of palms in the Mediterranean, the Middle East and North Africa, and its discovery in California caused concern for the state's ornamental palm and date industries and the many palms in Southern California landscapes. A rapid, coordinated effort led to the deployment of traps baited with the weevil's aggregation pheromone, coordinated pesticide applications to privately owned palms and destruction of palms at advanced stages of infestation. Research confirmed the chemical components of the aggregation pheromone, assessed the efficacy of trapping strategies and resolved the taxonomic identity, native range and putative region of origin for the population detected in Laguna Beach. The last confirmed detection of a live R. vulneratus was Jan. 20, 2012. USDA-APHIS declared this weevil eradicated from California on Jan. 20, 2015. The estimated cost of the eradication was $1,003,646.

  2. Coastal Adaptation: The Case of Ocean Beach, San Francisco

    Science.gov (United States)

    Cheong, S.

    2012-12-01

    Coastal erosion, storms, sea-level rise, and tsunamis all lead to inundation that puts people and communities at risk. Adapting to these coastal hazards has gained increasing attention with climate change. Instead of promoting one particular strategy such as seawalls or defending against one type of hazard, scholars and practitioners encourage a combination of existing methods and strategies to promote synergistic effects. The recently published Intergovernmental Panel on Climate Change (IPCC) Special Report on climate extremes reflects this trend in the integration of disaster risk management and climate change adaptation. This paper focuses on the roles, compatibilities, and synergies of three coastal adaptation options - engineering, vegetation, and policy - in the case of Ocean Beach in San Francisco. Traditionally engineering approach and ecosystem conservation often have stood in opposition as hard shoreline structures destroy coastal habitats, worsen coastal erosion, divert ocean currents, and prevent the natural migration of shores. A natural migration of shores without structure translates into the abandonment of properties in the coastal zone, and is at odds with property rights and development. For example, policies of relocation, retreat, and insurance may not be popular given the concerns of infrastructure and coastal access. As such, engineering, natural defense, and policy can be more conflictual than complementary. Nonetheless, all these responses are used in combination in many locations. Complementarities and compatibilities, therefore, must be assessed when considering the necessity of engineering responses, natural defense capabilities, and policy options. In this light, the question is how to resolve the problem of mixed responses and short- and long-term interests and values, identify compatibilities, and generate synergies. In the case of Ocean Beach, recent erosions that endangered San Francisco's wastewater treatment system acted as major

  3. Application of denaturing gradient gel electrophoresis (DGGE) for assessing fecal pollution sources at a recreational beach.

    Science.gov (United States)

    Esseili, M A; Kassem, I I; Lis, J; Sigler, V

    2014-12-01

    We investigated the effectiveness of Escherichia coli community fingerprinting for identifying fecal pollution sources impacting a recreational beach. E. coli in water collected from the beach, nearby creek and storm sewer outfall were enumerated using membrane filtration, while E. coli communities were characterized following polymerase chain reaction analysis and denaturing gradient gel electrophoresis (DGGE) fingerprinting. Analysis of E. coli densities to determine the contributions of the creek and storm sewer during dry weather was inconclusive. However, DGGE fingerprinting indicated that the creek E. coli communities had a greater impact on the beach community composition (80-95% similarity), than on storm sewer communities (41-64%). Following rainfall events, E. coli communities in the creek were at least 93% similar to those at the beach, while the similarity of the outfall and beach communities varied from 72 to 96%. Furthermore, E. coli communities at the beach were more similar to creek communities than to storm sewer communities after the first 2 h and 48 h following the onset of rainfall, and of comparable similarity following 24 h of rainfall, suggesting transient contributions from the storm sewer. DGGE analysis of E. coli communities provided evidence that the creek was a consistent source of E. coli to the beach, while the storm sewer was a transient source.

  4. Shotgun metagenomic sequencing reveals freshwater beach sands as reservoir of bacterial pathogens.

    Science.gov (United States)

    Mohiuddin, Mahi M; Salama, Yasser; Schellhorn, Herb E; Golding, G Brian

    2017-05-15

    Recreational waters and adjacent beach sands harbor complex microbial communities which may contain human pathogens that cannot be detected by conventional methods. Here, we investigate the diversity of bacterial populations inhabiting four freshwater beaches of the Great Lakes region using shotgun metagenomic sequencing approach. Our analysis suggests that average taxonomic richness and alpha diversity are significantly higher (P beach sands compared to the corresponding water environments. Compared to the water environments, beach sands harbored taxa from a more diverse range of phyla, including a higher proportion of sequences from unclassified phyla. Unique phyla were also identified in sand which included species from Aquificae, Candidatus Microgenomates, Latescibacteria, and Candidatus Aminicenantes. Sequences originating from pathogens were detected in both sand and water, with some pathogens enriched in both environments. Both lakes exhibited similar community composition suggesting that geographic location did not appear to have any major impact on bacterial diversity. These findings reveal the diversity of bacterial communities of freshwater beaches and highlight the importance of monitoring pathogens in recreational beaches, especially in the sand environment of these beaches. Copyright © 2017 Elsevier Ltd. All rights reserved.

  5. APPLYING UAV AND PHOTOGRAMMETRY TO MONITOR THE MORPHOLOGICAL CHANGES ALONG THE BEACH IN PENGHU ISLANDS

    Directory of Open Access Journals (Sweden)

    C.-H. Lu

    2016-06-01

    Full Text Available Penghu islands, in the southern Taiwan Strait, is a remnant of a middle-late Miocene basaltic shield volcano. We present a procedure to use UAV (Unmanned Aerial Vehicles to perform photogrammetry survey and monitoring analysis in beach evolution scenarios. The aim of this study is to understand spatial-temporal change along the sandy beach in Penghu islands, especially as for the effects of typhoon and coastal structures. According to the study result, this example of application is provided to show the results and the potential of this methodology in real beach changes. In addition, we found the typhoon and coastal structures play important roles to shape the beach morphology and its evolution. The result of beach monitoring reveals that the reduction and change of sand volume in Shanshui beach resulted from the placement of detached breakwater complexes. This coastal structure likely resulted in the development of tombolo and therefor make the beach unstable and subject to conduct rip current and more erosion.

  6. Beach nourishment in the USA, the history, the impacts, and the future

    Science.gov (United States)

    Young, Robert; Coburn, Andrew

    2017-04-01

    Currently, the primary tool being used at the local, state, and federal level in the USA to adapt to rising sea level, and to reduce potential storm damage is the addition of sand to the coastal system in the form of engineered beaches and dunes (commonly referred to as beach nourishment or beach replenishment). At the Program for the Study of Developed Shorelines, we have built a comprehensive database of all beach dredge and fill projects in the USA. The database tracks a history of beach projects that date back to 1923 with continual updates as new projects are implemented today. The projects in the database represent the movement of over 950 million cubic meters of sand covering over 3700 km of shoreline. This massive program of shoreline stabilization is being carried out with little long-term vision or planning, and no consideration for the cumulative environmental impacts of mining and placing so much sand. It is no exaggeration to say that a significant portion of the US East and Gulf Coasts are now completely artificial constructs, with engineering replacing natural processes. Along many shorelines, beach nourishment has become unsustainable as sand sources diminish. In addition, the cost of moving the sand has increased dramatically as communities scramble to build beaches and dunes. This program is not sustainable into the future, but there has been no widespread recognition of this reality, nor any move towards sensible retreat from the coast.

  7. Quality of Tourist Beaches in Huatulco, SW of Mexico: Multiproxy Studies

    Science.gov (United States)

    Retama, I.; Jonathan, M. P.; Rodriguez-Espinosa, P. F.

    2014-12-01

    40 beach water and sediment samples were collected from the inter-tidal zones of tourist beaches of Huatulco in the State of Oaxaca, South Western part of Mexico. The samples were collected in an aim to know the concentration pattern of metals (Cu, Cd, Cr, Ni, Pb, Zn, Co, Mn, Fe, As, Hg) in sediments and microplastics. Physico-chemical parameters like temperature, pH, dissolved oxygen, conductivity and total dissolved solids, salinity and redox potential. Collection of samples was done during the peak season in April 2013. Our results from water samples indicate that the physico-chemical conditions of the beach water have been altered due to human activities in large numbers. The bioavailable metal concentrations indicate that enrichment of Pb, Cd, Cr and As and it is also supported by the higher values observed from the calculation of enrichment factor and geoaccumulation index. The higher values in the sediments is either due to natural sources like chemical weathering of rocks and external sources, which points to high tourism, agricultural activities in the region. Identification of micro-plastics was done through SEM photographs, indicating the type of plastic wastes deposited into the beach regions which can indicate the density, durability and the persistence level in the sediments. Eventhough the enrichment of metals and modification of beach water quality is observed, care need to be taken to avoid further damage to the coastal ecosystem. Keywords: Tourism, Beach sediments, Beach water, Micro plastics, Trace metals, Contamination indices, Huatulco, Mexico.

  8. Cigarette Waste in Popular Beaches in Thailand: High Densities that Demand Environmental Action

    Directory of Open Access Journals (Sweden)

    Nipapun Kungskulniti

    2018-03-01

    Full Text Available Thailand, like all nations, has a responsibility to initiate environmental actions to preserve marine environments. Low- and middle-income countries face difficulties implementing feasible strategies to fulfill this ambitious goal. To contribute to the revitalization of Thailand’s marine ecosystems, we investigated the level of tobacco product waste (TPW on Thailand’s public beaches. We conducted a cross-sectional observational survey at two popular public beaches. Research staff collected cigarette butts over two eight-hour days walking over a one-kilometer stretch of beach. We also compiled and analyzed data on butts collected from sieved sand at 11 popular beaches throughout Thailand’s coast, with 10 samples of sieved sand collected per beach. Our survey at two beaches yielded 3067 butts in lounge areas, resulting in a mean butt density of 0.44/m2. At the 11 beaches, sieved sand samples yielded butt densities ranging from 0.25 to 13.3/m2, with a mean butt density of 2.26/m2 (SD = 3.78. These densities show that TPW has become a serious problem along Thailand’s coastline. Our findings are comparable with those in other countries. We report on government and civil society initiatives in Thailand that are beginning to address marine TPW. The solution will only happen when responsible parties, especially and primarily tobacco companies, undertake actions to eliminate TPW.

  9. Does human pressure affect the community structure of surf zone fish in sandy beaches?

    Science.gov (United States)

    Costa, Leonardo Lopes; Landmann, Júlia G.; Gaelzer, Luiz R.; Zalmon, Ilana R.

    2017-01-01

    Intense tourism and human activities have resulted in habitat destruction in sandy beach ecosystems with negative impacts on the associated communities. To investigate whether urbanized beaches affect surf zone fish communities, fish and their benthic macrofaunal prey were collected during periods of low and high human pressure at two beaches on the Southeastern Brazilian coast. A BACI experimental design (Before-After-Control-Impact) was adapted for comparisons of tourism impact on fish community composition and structure in urbanized, intermediate and non-urbanized sectors of each beach. At the end of the summer season, we observed a significant reduction in fish richness, abundance, and diversity in the high tourist pressure areas. The negative association between visitors' abundance and the macrofaunal density suggests that urbanized beaches are avoided by surf zone fish due to higher human pressure and the reduction of food availability. Our results indicate that surf zone fish should be included in environmental impact studies in sandy beaches, including commercial species, e.g., the bluefish Pomatomus saltatrix. The comparative results from the less urbanized areas suggest that environmental zoning and visitation limits should be used as effective management and preservation strategies on beaches with high conservation potential.

  10. Stakeholder Perceptions of Threatened Species and Their Management on Urban Beaches

    Directory of Open Access Journals (Sweden)

    Michael A. Weston

    2013-10-01

    Full Text Available We surveyed 579 recreationists regarding management of the threatened, beach-dwelling Hooded Plover Thinornis rubricollis. We postulated that: (1 lower awareness of the species and higher ‘inconvenience’ of management would engender less favourable perceptions of conservation and management; and (2 that frequency of beach use and dog ownership may mediate perceptions and levels of awareness and inconvenience. Overall, inconvenience was low while awareness and support for plover conservation were high. Education and awareness strategies were considered less effective than regulations; exclusion and regulations were considered less desirable than on-ground protective measures. Awareness, frequency of beach use and dog walking did not influence the perceived effectiveness of different managements. More frequent beach users had greater awareness of the species and their plight but reported greater inconvenience associated with management. Respondents with high awareness rated the severity of human-related threats higher; low awareness was associated with more inconvenience associated with on-ground protection, and exclusion and regulations. Dog walkers reported more inconvenience associated with exclusions and regulations than non-dog walkers. Dog walkers who used the beach infrequently rated threats significantly higher than frequent beach users. Conservation and education strategies could usefully be tailored to beach users’ level of use and pet ownership.

  11. Does beach nourishment have long-term effects on intertidal macroinvertebrate species abundance?

    Science.gov (United States)

    Leewis, Lies; van Bodegom, Peter M.; Rozema, Jelte; Janssen, Gerard M.

    2012-11-01

    Coastal squeeze is the largest threat for sandy coastal areas. To mitigate seaward threats, erosion and sea level rise, sand nourishment is commonly applied. However, its long-term consequences for macroinvertebrate fauna, critical to most ecosystem services of sandy coasts, are still unknown. Seventeen sandy beaches - nourished and controls - were sampled along a chronosequence to investigate the abundance of four dominant macrofauna species and their relations with nourishment year and relevant coastal environmental variables. Dean's parameter and latitude significantly explained the abundance of the spionid polychaete Scolelepis squamata, Beach Index (BI), sand skewness, beach slope and latitude explained the abundance of the amphipod Haustorius arenarius and Relative Tide Range (RTR), recreation and sand sorting explained the abundance of Bathyporeia sarsi. For Eurydice pulchra, no environmental variable explained its abundance. For H. arenarius, E. pulchra and B. sarsi, there was no relation with nourishment year, indicating that recovery took place within a year after nourishment. Scolelepis squamata initially profited from the nourishment with "over-recolonisation". This confirms its role as an opportunistic species, thereby altering the initial community structure on a beach after nourishment. We conclude that the responses of the four dominant invertebrates studied in the years following beach nourishment are species specific. This shows the importance of knowing the autecology of the sandy beach macroinvertebrate fauna in order to be able to mitigate the effects of beach nourishment and other environmental impacts.

  12. Tools for beach health data management, data processing, and predictive model implementation

    Science.gov (United States)

    ,

    2013-01-01

    This fact sheet describes utilities created for management of recreational waters to provide efficient data management, data aggregation, and predictive modeling as well as a prototype geographic information system (GIS)-based tool for data visualization and summary. All of these utilities were developed to assist beach managers in making decisions to protect public health. The Environmental Data Discovery and Transformation (EnDDaT) Web service identifies, compiles, and sorts environmental data from a variety of sources that help to define climatic, hydrologic, and hydrodynamic characteristics including multiple data sources within the U.S. Geological Survey and the National Oceanic and Atmospheric Administration. The Great Lakes Beach Health Database (GLBH-DB) and Web application was designed to provide a flexible input, export, and storage platform for beach water quality and sanitary survey monitoring data to compliment beach monitoring programs within the Great Lakes. A real-time predictive modeling strategy was implemented by combining the capabilities of EnDDaT and the GLBH-DB for timely, automated prediction of beach water quality. The GIS-based tool was developed to map beaches based on their physical and biological characteristics, which was shared with multiple partners to provide concepts and information for future Web-accessible beach data outlets.

  13. Spatial and temporal correlation between beach and wave processes: implications for bar-berm sediment transition

    Science.gov (United States)

    Joevivek, V.; Chandrasekar, N.; Saravanan, S.; Anandakumar, H.; Thanushkodi, K.; Suguna, N.; Jaya, J.

    2017-06-01

    Investigation of a beach and its wave conditions is highly requisite for understanding the physical processes in a coast. This study composes spatial and temporal correlation between beach and nearshore processes along the extensive sandy beach of Nagapattinam coast, southeast peninsular India. The data collection includes beach profile, wave data, and intertidal sediment samples for 2 years from January 2011 to January 2013. The field data revealed significant variability in beach and wave morphology during the northeast (NE) and southwest (SW) monsoon. However, the beach has been stabilized by the reworking of sediment distribution during the calm period. The changes in grain sorting and longshore sediment transport serve as a clear evidence of the sediment migration that persevered between foreshore and nearshore regions. The Empirical Orthogonal Function (EOF) analysis and Canonical Correlation Analysis (CCA) were utilized to investigate the spatial and temporal linkages between beach and nearshore criterions. The outcome of the multivariate analysis unveiled that the seasonal variations in the wave climate tends to influence the bar-berm sediment transition that is discerned in the coast.

  14. Environmental radioecological study of beaches of Las Tunas and Holguin provinces, Cuba

    International Nuclear Information System (INIS)

    Brigido, F.O.; Peres Tamayo, L.; Barrerras Caballero, A.; Batista Mateo, R.; Hernandez Perez, A.; Parra Valdes, D.; Bravo Lopez, R.; Freeman, D.A.; Zerquera, J.T.

    1999-01-01

    The survey of radioactivity levels in beaches of Las Tunas and Holguin was undertaken as a programme aimed at studying the environmental radioactivity in Cuba. Concentrations of radionuclides were determined by In Situ gamma ray spectrometry. The average concentrations of Ra 226 , Th 232 and K 40 in the surveyed soils of Las Tunas beaches (Covarrubia, Real de Covarrubia and Corella) were 3, < 1 and 14.3 Bq.Kg 1 - , respectively. In surveyed soils of Holguin beaches (Guardalavaca, Pesquero and Don Lino) were 6.0, < 1 and 25.0 Bq.Kg 1 - , respectively. Radiological measurements carried out with a portable scintillometer revealed an average outdoor absorbed dose rate in air of 34.2 n Gy.h 1 - for Las Tunas beaches and 37.3 n Gy.h 1 - for Holguin one. For assessing the ionizing component of cosmic rays, measurements were performed on board a wood and plastic boat in the middle of two deep artificial basins and in two bays. The readings averaged 33.5 n Gy.h 1 - . Measurements of gross beta activity in outdoor air revealed 0.3 and 0.5 Bq.m 3 - for Las Tunas and Holguin beaches, respectively, and indoor values averaged 3.5 and 4.3 Bq.m 3 - , respectively. Taking into account the results of measurements was possible to assess effective doses due to external and internal exposure. For the first one were estimated 230 Sv.year 1 - for Las Tunas beaches and 250 Sv.year 1 - for Holguin beaches. The assessing of internal component of exposure revealed 236 and 292 Sv.year 1 - for Las Tunas and Holguin beaches, respectively, due to exposure to radon daughter. The results of our survey show that studied beaches are characterized by low environmental radioactive background

  15. Aeolian transport of seagrass ( Posidonia oceanica ) beach-cast to terrestrial systems

    KAUST Repository

    Jiménez, Maria A.

    2017-06-29

    The annual export of the Mediterranean seagrass (Posidonia oceanica) litter to adjacent beaches and coastal dunes was quantified by examining the fortnight evolution of seagrass beach-cast volume on two beaches in the NW Mediterranean (Son Real and Es Trenc, Mallorca Island, Spain) for two years and analyzing the wind speed and direction obtained from the closest Meteorological Spanish Agency surface weather stations. The decomposition stage of the deposits was examined by analyzing the total hydrolysable amino acids, its percentage distribution and derived degradation indexes. Prevalent winds exceeding 6 m s−1, the coastline morphology and type of terrestrial vegetation determine the annual dynamics of the seagrass beach-cast. In the most protected beach (Son Real) the seagrass beach-cast remained nearly stationary during the two studied years while it exhibited wide annual fluctuations in the less protected one (Es Trenc). The amounts of P. oceanica wrack washed on Son Real and Es Trenc beaches, respectively, were estimated at 309 kg DW m coastline−1 yr−1 and 1359 kg DW m coastline−1 yr−1. They supplied between 20 kg CaCO3 m coastline−1 yr−1 and 47 kg CaCO3 m coastline−1 yr−1. Between 54% (Son Real) and 70% (Es Trenc) of seagrass beach-cast, respectively accounting for 1.5 kg N m coastline−1 yr−1 and 8.6 kg N m coastline−1 yr−1, were annually exported from the beaches to adjacent dune systems. Our results reveal that Mediterranean seagrass meadows might be an important source of materials, including sand and nutrients, for adjacent terrestrial systems, able to support their functioning.

  16. Structural optimization of Beach-Cleaner snatch mechanism

    Science.gov (United States)

    Ouyang, Lian-ge; Wei, Qin-rui; Zhou, Shui-ting; Peng, Qian; Zhao, Yuan-jiang; Wang, Fang

    2017-12-01

    In the working process of one Beach-Cleaner snatch institution, the second knuckle arm angular speed was too high, which resulted in the pick-up device would crash into the basic arm in the fold process. The rational position of joint to reduce the second knuckle arm angular speed and the force along the axis direction of the most dangerous point can be obtained from the kinematics simulation of snatch institution in the code of Automatic Dynamic Analysis off Mechanical Systems (ADAAMS). The feasible of scheme was validated by analyzing the optimized model in the software of ANSYS. The analysis results revealed: the open angle between the basic arm and the second knuckle arm improved from 125.0° too 135.24°, thee second knuckle arm angular speed decreased from 990.74rad/s to 58.53 rad/s, Not only improved work efficiency of snatch institution, but also prolonged its operation smoothness.

  17. Integrated solid waste management of Palm Beach County, Florida

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1995-11-01

    The subject document reports the results of an in-depth investigation of the fiscal year 1992 cost of the Palm Beach County, Florida integrated municipal solid waste management system (IMSWMS), the energy consumed to operate the system, and the environmental performance requirements for each of the system`s waste-processing and disposal facilities. Actual data from records kept by participants is reported in this document. Every effort was made to minimize the use of assumptions, and no attempt is made to interpret the data reported. Analytical approaches are documented so that interested analysts may perform manipulation or further analysis of the data. As such, the report is a reference document for MSW management professionals who are interested in the actual costs and energy consumption for a one-year period, of an operating IMSWMS.

  18. Self-reported water and drowning risk exposure at surf beaches.

    Science.gov (United States)

    Morgan, Damian; Ozanne-Smith, Joan; Triggs, Tom

    2009-04-01

    To document patterns of water exposure at surf beaches by gender and identify factors that predict bather confidence to return to shore if caught in a rip current. Recreational surf beach bathers (N=406) provided self-completed data on water exposure patterns, surf activity behaviours and potential drowning risk and protective factors. Relative to females, males visited surf beaches more frequently, expected to spend longer in the water and in deeper water, and more often bathed after using alcohol (psurf experience, floatation devices and response to sea conditions.

  19. 11 things a geologist thinks an engineer should know about carbonate beaches

    Science.gov (United States)

    Halley, Robert B.; Magoon, Orville T.; Robbins, Lisa L.; Ewing, Lesley

    2002-01-01

    This is a review of the geological aspects of carbonate beaches that a geologist thinks may be useful for an engineer. Classical geologic problems of carbonate beaches, for example how ancient examples are recognized in rock sequences, are of little interest to engineers. Geologists not involved in engineering problems may find it difficult to know what an engineer should understand about carbonate beaches. Nevertheless, there are at least eleven topics that are potentially very useful for engineers to keep in mind. These eleven are chosen with as much thought going into what has been omitted as has been given to the eleven included topics. Some qualifications are in order: First, this paper does not discuss certain kinds of carbonate shorelines that are beyond the scope of engineering issues. For example, this review does not discuss very high-energy carbonate boulder beaches. These beaches are comprised of pieces of carbonate material ganging in size from ten centimeters to meters. Typically, these are high-energy storm deposits formed from pieces of either eroded carbonate rock or other large carbonate pieces such as pieces of large corals. This paper focuses on sand-sized (0.0625–2.0 mm) coastal carbonate deposits. Second, offshore beaches will not be discussed. There are many carbonate beaches that form on banks or shoals exposed at low tide, but our discussion is confined to what most people think of when they go to some tropical island and/or resort and walk out to lay on the beach. Third, this paper does not consider mixed carbonate/quartz sand beaches. While mixed beaches are common, only the end member of purely carbonate sand beaches is considered. Fourth, there will be no order of preference of the eleven topics. And lastly, these eleven topics are not consensus items. These are simply one geologist s thoughts about the aspects of carbonate beaches that would be useful for engineering colleagues to keep in mind. Where possible, general reference is

  20. Research Spotlight: Why has oil from the Exxon Valdez persisted so long on beaches?

    Science.gov (United States)

    Tretkoff, Ernie

    2011-01-01

    The 1989 Exxon Valdez oil spill released more than 11 million gallons of oil into Prince William Sound, Alaska, polluting 800 kilometers of beaches. In some areas the spilled oil has persisted on beaches more than 20 years later. To examine the factors affecting the persistence of oil from the spill, Xia et al conducted field studies and numerical modeling of the hydrogeological characteristics of a shallow bedrock beach on Knight Island in western Prince William Sound, the area most heavily polluted by the spill. (Water Resources Research, doi:10.1029/2010WR009179, 2010)

  1. Basic study on the estimating the value of sand beach using amenities replace

    OpenAIRE

    Shin, B-S; Kim, K-H.

    2013-01-01

    The sand beach along the east coast of Korea offers beautiful scenery with high-quality sand for leisure, and is also famous for white-sand and pine-trees both of which are important scenic resources. Furthermore, the sand beach helps to maintain natural environment of the coastal area and has the function of a disaster prevention system against high waves. There are two major value evaluation methods, Travel Cost Method and Contingent Valuation Method, to assess the value of sand beach. Cont...

  2. Oficinas de la Newport Beach- California - (EE. UU.

    Directory of Open Access Journals (Sweden)

    William L. Pereira Asociados, Arquitectos e ingenieros

    1974-11-01

    Full Text Available This building that houses the home office of one of the most important Insurance Companies in the country has been constructed in Newport Beach, California. It has seven storeys —two out of which below ground level— and displays a most original architectural design with its facades opening up towards the exterior. Great care has been taken as to the interior decoration, and the layout of almost all the departments, shaped into office landscapes, with movable wall systems, wall - to - wall carpeting consisting of exchangeable squares The aim of this planning is to achieve a maximum of flexibility in the office arrangement, thus providing a possibility to adjust according to the changing needs.Este edificio, que alberga la sede central de una de las Compañías de Seguros más importantes del país, ha sido construido en Newport Beach, California. Cuenta con siete plantas —dos de ellas por debajo del nivel del suelo— y presenta una original fisonomía con sus fachadas abriéndose hacia el exterior. Ha sido muy cuidada la decoración interior, el patio central con su columna ornamental y la disposición de casi todos los departamentos, tratados como oficinas-paisaje, a base de tabiquería móvil, moquetas despiezables, etc., destinado todo ello a lograr la máxima y más fácil flexibilidad de distribución, según las necesidades de cada momento.

  3. Detecting nonlinearity in run-up on a natural beach

    Directory of Open Access Journals (Sweden)

    K. R. Bryan

    2007-07-01

    Full Text Available Natural geophysical timeseries bear the signature of a number of complex, possibly inseparable, and generally unknown combination of linear, stable non-linear and chaotic processes. Quantifying the relative contribution of, in particular, the non-linear components will allow improved modelling and prediction of natural systems, or at least define some limitations on predictability. However, difficulties arise; for example, in cases where the series are naturally cyclic (e.g. water waves, it is most unclear how this cyclic behaviour impacts on the techniques commonly used to detect the nonlinear behaviour in other fields. Here a non-linear autoregressive forecasting technique which has had success in demonstrating nonlinearity in non-cyclical geophysical timeseries, is applied to a timeseries generated by videoing the waterline on a natural beach (run-up, which has some irregular oscillatory behaviour that is in part induced by the incoming wave field. In such cases, the deterministic shape of each run-up cycle has a strong influence on forecasting results, causing questionable results at small (within a cycle prediction distances. However, the technique can clearly differentiate between random surrogate series and natural timeseries at larger prediction distances (greater than one cycle. Therefore it was possible to clearly identify nonlinearity in the relationship between observed run-up cycles in that a local autoregressive model was more adept at predicting run-up cycles than a global one. Results suggest that despite forcing from waves impacting on the beach, each run-up cycle evolves somewhat independently, depending on a non-linear interaction with previous run-up cycles. More generally, a key outcome of the study is that oscillatory data provide a similar challenge to differentiating chaotic signals from correlated noise in that the deterministic shape causes an additional source of autocorrelation which in turn influences the

  4. Achieving Energy Savings in Municipal Construction in Long Beach, CA

    Energy Technology Data Exchange (ETDEWEB)

    Parrish, Kristen [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Regnier, Cindy [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

    2012-01-01

    Long Beach Gas and Oil (LBGO), the public gas utility in Long Beach, California, partnered with the U.S. Department of Energy (DOE) to develop and implement solutions to build a new, low-energy modular office building that is at least 50% below requirements set by Energy Standard 90.1-2007 of the American Society of Heating, Refrigerating, and Air-conditioning Engineers (ASHRAE), the American National Standards Institute (ANSI), and the Illuminating Engineering Society of America (IESNA) as part of DOE’s Commercial Building Partnerships (CBP) program.3 The LBGO building, which demonstrates that modular construction can be very energy efficient, is expected to exceed the ASHRAE baseline by about 45%. The new 15,000-square foot (ft2) LBGO office building has two stories and houses private offices, open-plan cubicle offices, and a conference room and call center on the second floor. The building’s modular nature allowed LBGO to realize the cost benefits of fasttracked construction while saving substantial energy and reducing operational costs. The project was funded by the utility’s ratepayer revenue, which imposed a tight budget limit. The design process was a collaborative effort involving LBGO and its design-build team, Lawrence Berkeley National Laboratory (Berkeley Lab), and subcontractors Stantec (formerly Burt Hill) and LHB Inc. The team proposed efficiency measures based on computer modeling of the building in full compliance with ASHRAE 90.1-2007; in the modeled building, the lighting and cooling systems were the largest energy users, so increasing the efficiency of these systems was a top priority. Promising measures were modeled to estimate their energy performance, and each measure was evaluated for its feasibility within the budget.

  5. Modelling beach profile response during a storm in Praia de Faro, Portugal: Comparison of three beach profile models

    Science.gov (United States)

    Vousdoukas, M. I.; Almeida, L. M.; Ferreira; Karambas, T. V.

    2009-12-01

    The aim of the present contribution is to compare three numerical models on the grounds of their performance in simulating beach profile response on a monitored storm event in the Praia de Faro, South Portugal. The discussed storm occurred on February 1st, 2009, with duration ~24 hours and WSW waves, with maximum observed significant wave height and peak period, around 5 m and 8.5 s, respectively. The event was the most intense of the year, with a 3 years return period. Three models were run: the open source XBeach, a Bussinesq model (Karambas, T.V. and Koutitas, C., 2002. J. Wat, Port, Coas. & Oc. Eng., 128 (3)) and a linear energetics-approach model (Vousdoukas et al., Cont. Shelf Res., in press). Models were run for five profiles distributed along the whole study site, with circa 500 m spacing between each other; and beachface steepness increasing westwards (ranging from ~6% to 10%). All studied profiles showed signs of berm erosion and off-shore bar formation, with the impacts of the storm becoming less prominent, from the steeper NW profiles to the milder sloped ones, found on the SE boundary. All models overestimated the berm erosion, especially on the steeper profiles for which an unrealistic erosive scarp appeared, coupled with enhanced bar formation. Such behaviour was weaker on the Bousinesq model; which was calibrated for milder avalanching and produced overall improved results (rms errors between 0.2-0.35 m), with the cost of increased computational times. The performance of the energetics approach model was comparable to the other two, despite the significantly reduced computational times (~one order of magnitude). The overall rms errors ranged from 0.2 to 0.5 m, with the higher values corresponding to the western steeper profiles. Apart from a weakness of such profile models to simulate morphological response on reflective beaches, some other factors may account for the differences between predictions and observations: e.g. longshore transport, the

  6. Hurricane Sandy beach response and recovery at Fire Island, New York: Shoreline and beach profile data, October 2012 to October 2014

    Science.gov (United States)

    Hehre Henderson, Rachel E.; Hapke, Cheryl J.; Brenner, Owen T.; Reynolds, Billy J.

    2015-04-30

    In response to the forecasted impact of Hurricane Sandy, which made landfall on October 29, 2012, the U.S. Geological Survey (USGS) began a substantial data-collection effort to assess the morphological impacts to the beach and dune system at Fire Island, New York. Global positioning system (GPS) field surveys of the beach and dunes were conducted just prior to and after landfall and these data were used to quantify change in several focus areas. In order to quantify morphologic change along the entire length of the island, pre-storm (May 2012) and post-storm (November 2012) lidar and aerial photography were used to assess changes to the shoreline and beach.As part of the USGS Hurricane Sandy Supplemental Fire Island Study, the beach is monitored periodically to enable better understanding of post-Sandy recovery. The alongshore state of the beach is recorded using a differential global positioning system (DGPS) to collect data around the mean high water (MHW; 0.46 meter North American Vertical Datum of 1988) to derive a shoreline, and the cross-shore response and recovery are measured along a series of 10 profiles.Overall, Hurricane Sandy substantially altered the morphology of Fire Island. However, the coastal system rapidly began to recover after the 2012­–13 winter storm season and continues to recover in the form of volume gains and shoreline adjustment.

  7. Coupling alongshore variations in wave energy to beach morphologic change using the SWAN wave model at Ocean Beach, San Francisco, CA

    Science.gov (United States)

    Eshleman, Jodi L.; Barnard, Patrick L.; Erikson, Li H.; Hanes, Daniel M.

    2007-01-01

    Coastal managers have faced increasing pressure to manage their resources wisely over the last century as a result of heightened development and changing environmental forcing. It is crucial to understand seasonal changes in beach volume and shape in order to identify areas vulnerable to accelerated erosion. Shepard (1950) was among the first to quantify seasonal beach cycles. Sonu and Van Beek (1971) and Wright et al. (1985) described commonly occurring beach states. Most studies utilize widest spaced 2-D cross shore profiles or shorelines extracted from aerial photographs (e.g. Winant et al. 1975; Aubrey, 1979, Aubrey and Ross, 1985; Larson and Kraus, 1994; Jimenez et al., 1977; Lacey and Peck, 1998; Guillen et al., 1999; Norcorss et al., 2002) to analyzed systematic changes in beach evolution. But with the exception of established field stations, such as Duck, NC (Birkemeier and Mason, 1984), ans Hazaki Oceanographical Research Station (HORS) in Japan (Katoh, 1997), there are very few beach change data sets with high temporal and spatial resolutions (e.g. Dail et al., 2000; Ruggiero et al., 2005; Yates et al., in press). Comprehensive sets of nearshore morphological data and local in situ measurements outside of these field stations are very rare and virtually non-existent high-energy coasts. Studied that have attempted to relate wave statistics to beach morphology change require some knowledge of the nearshore wave climate, and have had limited success using offshore measurement (Sonu and Van Beek, 1971; Dail et al., 2000). The primary objective of this study is to qualitatively compare spatially variable nearshore wave predictions to beach change measurements in order to understand the processes responsible for a persistent erosion 'hotspot' at Ocean Beach, San Francisco, CA. Local wave measurements are used to calibrate and validate a wave model that provides nearshore wave prediction along the beach. The model is run for thousands of binned offshore wave

  8. Degradation of Deepwater Horizon oil buried in a Florida beach influenced by tidal pumping.

    Science.gov (United States)

    Huettel, Markus; Overholt, Will A; Kostka, Joel E; Hagan, Christopher; Kaba, John; Wells, Wm Brian; Dudley, Stacia

    2018-01-01

    After Deepwater Horizon oil reached the Florida coast, oil was buried in Pensacola Beach (PB) sands to ~70cm depth, resulting in Total Petroleum Hydrocarbon (TPH) concentrations up to ~2kg per meter of beach. This study followed the decomposition of the buried oil and the factors influencing its degradation. The abundance of bacteria in oiled sand increased by 2 orders of magnitude within one week after oil burial, while diversity decreased by ~50%. Half-lives of aliphatic and aromatic hydrocarbons reached 25 and 22days, respectively. Aerobic microbial oil decomposition, promoted by tidal pumping, and human cleaning activities effectively removed oil from the beach. After one year, concentrations of GC-amenable hydrocarbons at PB were similar to those in the uncontaminated reference beach at St. George Island/FL, and microbial populations that disappeared after the oil contamination had reestablished. Yet, oxihydrocarbons can be found at PB to the present day. Copyright © 2017 Elsevier Ltd. All rights reserved.

  9. Characteristics of meso-sized plastic marine debris on 20 beaches in Korea.

    Science.gov (United States)

    Lee, Jongsu; Lee, Jongmyoung; Hong, Sunwook; Hong, Sang Hee; Shim, Won Joon; Eo, Soeun

    2017-10-15

    We surveyed the abundance and accumulation patterns of mesoplastic marine debris (5-25mm) on 20 beaches in Korea. The mean abundance of it was 13.2items/m 2 , and the mean weight was 1.5g/m 2 . Hard plastic and Styrofoam were the dominant types. The proportions of hard plastic and Styrofoam were highly variable among the beaches, each accounting for 0-100% of the total debris on a given beach with 32% and 48.5% (by number) on average, respectively. Relatively lower abundances of mesoplastic marine debris compared with our previous studies were likely due by differences of the sampling areas within the beach. The samples of this research were selected from backshore, middle line, and water edge whereas they were selected from high strandline and backshore in our previous studies. It should be considered when discussing the level of mesoplastic marine debris. Copyright © 2017 Elsevier Ltd. All rights reserved.

  10. SOME STATISTICAL ISSUES RELATED TO MULTIPLE LINEAR REGRESSION MODELING OF BEACH BACTERIA CONCENTRATIONS

    Science.gov (United States)

    As a fast and effective technique, the multiple linear regression (MLR) method has been widely used in modeling and prediction of beach bacteria concentrations. Among previous works on this subject, however, several issues were insufficiently or inconsistently addressed. Those is...

  11. Bioremediation of Aromatic Hydrocarbons at Seal Beach, CA: Laboratory and Field Investigations

    National Research Council Canada - National Science Library

    Ball, Harold

    1994-01-01

    .... The focus of the investigation was a site at the Seal Beach Naval Weapons Station in Southern California where a significant gasoline spill resulted in contamination of the ground water aquifer...

  12. Risks of drowning and safety concerns at the beaches of Karachi--perspective from lifeguards.

    Science.gov (United States)

    Shaikh, Masood Ali

    2014-05-01

    Going to beaches is a popular pastime for many people in Karachi. Lifeguards have been deployed on many beaches for the safety and protection of beachgoers. This cross-sectional survey was conducted to study the opinions and experiences of lifeguards posted at eight beaches of Karachi. Ignorance among beachgoers about how dangerous it could be at seaside, was reported by 19 (61.3%) out of 31 lifeguards interviewed. Lifeguards had to put up with verbal and physical abuse while discharging their duties, with verbal abuse being the universal experience. Improved record keeping of drowning and near-drowning data would help make better evidence-informed beach-safety decisions in Karachi for reducing the morbidity and mortality burden owing to drowning.

  13. Aerial Photography and Imagery, Ortho-Corrected - 2009 Digital Orthophotos - Palm Beach County

    Data.gov (United States)

    NSGIC Education | GIS Inventory — This MrSID-compressed true color dataset is one component of the digital orthophoto coverage (DOI) over Palm Beach County, FL. This dataset is comprised of 3-band...

  14. Deformation of textural characteristics and sedimentology along micro-tidal estuarine beaches

    Digital Repository Service at National Institute of Oceanography (India)

    Dora, G.U.; SanilKumar, V.; Philip, C.S.; Johnson, G.

    to medium sand, moderately well sorted to moderately sorted, positive to negative skewed, and platykurtic to leptokurtic sediments. Spatio-temporal variation of mean grain size showed significant influence of breaking waves on beach sediments whereas sorting...

  15. Topography and sedimentary characteristics of the sandy beach of Kavaratti (Lakshadweep) - a premonsoonal study

    Digital Repository Service at National Institute of Oceanography (India)

    SanilKumar, K.V.; Shyam, K.R.; Varma, P.U.; Sivadas, P.

    During the southwest monsoon beach sediments on the western coast of Kavaratti are transported from the southern tip of the island to its northern tip. After the monsoon the littoral current reverses and the redistribution of the sediments takes...

  16. Short-term observation of beach dynamics using cross-shore profiles and foreshore sediment

    Digital Repository Service at National Institute of Oceanography (India)

    Dora, G.U.; SanilKumar, V.; Johnson, G.; Philip, C.S.; Vinayaraj, P.

    characteristics. Present study emphasizes the need to observe the beach changes over inter-annual seasons before planning coastal protection measures. The results of the study will be helpful for formulating an effective coastal zone management plan at Devbag...

  17. Texture, carbonate content and component composition of Mauritius beach sands, Indian Ocean

    Digital Repository Service at National Institute of Oceanography (India)

    Karisiddaiah, S.M.; Veerayya, M.; Guptha, M.V.S.

    Samples collected from beaches bordering the southern, southeastern, western and northwestern shores representing swell (windward) and non-swell (leeward) dominated environments of the island of Mauritius were studied in order to define grain size...

  18. Feasibility of the Blue Flag Eco-Labelling Scheme for Beaches in ...

    African Journals Online (AJOL)

    Nafiisah

    Various awards and quality assurance systems are in widespread use for promoting ... caused, numerous effects, and most importantly, a solution – International ... hotels. United States. Blue Flag beaches and marinas. International. Brazil Sustainable. Tourism Program accommodations and tourism operators Brazil.

  19. April 2005 Lidar Point Data of Southern California Coastline: Long Beach to US/Mexican Border

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set contains lidar point data (latitude/longitude) from a strip of Southern California coastline (including water, beach, cliffs, and top of cliffs) from...

  20. September 2004 Lidar Point Data of Southern California Coastline: Long Beach to US/Mexican Border

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set contains lidar point data (Geodetic Coordinates) from a strip of Southern California coastline (including water, beach, cliffs, and top of cliffs) from...

  1. March 2006 Lidar Point Data of Southern California Coastline: Long Beach to US/Mexican Border

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set contains lidar point data (Geodetic Coordinates) from a strip of Southern California coastline (including water, beach, cliffs, and top of cliffs) from...

  2. October 2003 Lidar Point Data of Southern California Coastline: Newport Beach to US/Mexican Border

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set contains lidar point data (Geodetic Coordinates) from a strip of Southern California coastline (including water, beach, cliffs, and top of cliffs) from...

  3. October 2005 Lidar Point Data of Southern California Coastline: Long Beach to US/Mexican Border

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set contains lidar point data (UTM, Zone 11) from a strip of Southern California coastline (including water, beach, cliffs, and top of cliffs) from Long...

  4. Physical actions and work-rest time in men's beach volleyball

    Directory of Open Access Journals (Sweden)

    José Manuel Palao

    2014-09-01

    Full Text Available The purpose of this study was to assess the ball contacts, jumps, hits, work time, and rest ratio in male beach volleyball players in relation to their tactical roles. The sample of this study included 6970 rallies played by 91 beach volleyball players, which corresponded to 179 sets of the 2008 Men's Beach Volleyball World Tour (FIVB. We analyzed: ball contacts, jumps, hits, work time, rest time, set (first, second or third, and player's tactical role (e.g., defense specialist, blocker, or no specialization. A significantly higher number of jumps were executed by blockers. No differences were found in the third set for any of the physical variables studied. This paper provides references about the physical demands (e.g., contacts, jumps, and hits for blockers and defense specialists and temporal patterns of the beach volleyball game (i.e., work and rest time for two-set matches and three-set matches.

  5. Microplastics in tourist beaches of Huatulco Bay, Pacific coast of southern Mexico.

    Science.gov (United States)

    Retama, I; Jonathan, M P; Shruti, V C; Velumani, S; Sarkar, S K; Roy, Priyadarsi D; Rodríguez-Espinosa, P F

    2016-12-15

    The presence and impacts of plastic marine debris (PMD) have been documented in the oceans worldwide, and they deserve special attention. This study is the first to report the presence of microplastics in tourist beaches located in Huatulco Bay, southern Mexico. A total of 70 beach sediment samples (for 2 distinct seasons) were collected from Huatulco Bay in April 2013 and December 2014. The samples were subsequently extracted by scanning electron microscopy (SEM) to identify the fibrous microplastics (diametermicroplastics is present in the Conejos, Tangolunda, Santa Cruz, and San Agustin beaches. The microplastics are mainly derived from tourism-based activities and effluents discharged from the hotels and restaurants located along the beaches. Copyright © 2016 Elsevier Ltd. All rights reserved.

  6. Hazardous Waste Cleanup: International Flavors & Fragrances Incorporated in Union Beach, New Jersey

    Science.gov (United States)

    International Flavors & Fragrances was located at 800 Rose Lane in Union Beach, New Jersey. International Flavors & Fragrances (IFF) manufactured specialty organic flavors and fragrances at this site from 1951 until the plant closed in 1997. It is adjacent

  7. Echinodermata das praias de Salvador (Bahia, Brasil The Echinoderms of Salvador beaches (Bahia, Brazil

    Directory of Open Access Journals (Sweden)

    Orane Falcão de Souza Alves

    2000-06-01

    Full Text Available This paper presents 28 species of Echinoderms collected on 5 beaches of Salvador (12º54' to 13º01' S and 38º26' to 38º33' W, Brazil, which are distributed in 19 families. Ophiuroidea represented 53,6% of the collected species, followed by Echinoidea (28,6%, Asteroidea (7,1%, Holothuroidea (7,1%, and Crinoidea (3,6%. Ophiuroidea and Echinoidea were the most frequent groups, occurring at all the studied beaches while Crinoidea occurred only on 20% of them. Most of the species are characterized as belonging to the tropical warm waters, some to the shallow coastal areas and some having a broad bathymetric distribution. The richness of species values on beaches ranged from 7 to 24, at Itapua Beach, and from 2 to 14 among different kinds of habitats, where protected ones showed higher values.

  8. Barrier island response to an elevated sea-level anomaly: Onslow Beach, North Carolina, USA

    Science.gov (United States)

    Theuerkauf, E. J.; Rodriguez, A. B.; Fegley, S. R.; Luettich, R.

    2012-12-01

    Variations in sea level over time scales ranging from hours to millennia influence coastal processes and evolution. At annual time scales, elevated sea-level anomalies produce coastal flooding and promote beach erosion. This study examines the coastal response of Onslow Beach, North Carolina to the summer 2009 East Coast sea-level anomaly. Onslow Beach is a 12-km-long wave-dominated barrier island with highly variable along-barrier morphology. The transgressive southern portion of the island is characterized by a narrow beach, low dunes, and multiple washover fans, while the regressive northern portion is characterized by a wide beach and continuous tall dunes. Hourly tide gauge data from adjacent NOAA stations (Beaufort and Wrightsville Beach) are used to determine the timing and extent of elevated water levels. The seasonal and longer term trends (relative sea level rise) are removed from both of the water level series and the sea-level anomaly is represented by a large residual between the observed and predicted water levels. Beach response is quantified using terrestrial laser scanning for morphology and from geoprobe cores to determine the maximum depth of erosion (MDOE). The mean high water (MHW) shoreline and dune toe are digitized from digital elevation models derived from the laser scans and analyzed using the Digital Shoreline Analysis System (DSAS). Landward (negative) movement of these contacts indicates erosion. Wave data collected from an Acoustic Wave and Current Meter (AWAC) located offshore of the southern end of Onslow Beach is used to characterize the wave regime throughout the study. Water level is elevated in the tide gauge data from June 2009 to March 2010. This sea-level anomaly corresponds with an increase in the maximum depth of erosion between 2009 and 2010. Landward movement of the MHW shoreline and the dunetoe increased during the period between September 2009 and May 2010 indicating an increase in beach erosion during the sea

  9. Isolation and significance of Salmonella sp. from some beaches of Kerala

    Digital Repository Service at National Institute of Oceanography (India)

    Gore, P.S.; Iyer, T.S.G.; Raveendran, O.; Unnithan, R.V.

    to be some relation between the coliforms, E. coli counts and the presence of Salmonella. The occurrence and significance of Salmonella in bathing beaches in relation to public health hazard have been highlighted...

  10. Grain size analysis of beach sediment along the barrier bar lagoon ...

    African Journals Online (AJOL)

    Grain size analysis of beach sediment along the barrier bar lagoon coastal system, Lagos, Nigeria; its implication on coastal erosion. R Abdulkarim, EA Akinnigbagbe, DO Imo, MT Imhansoloeva, VO Aniebone, MP Ibitola, BR Faleye, O Shonde, YJ Appia ...

  11. 33 CFR 110.214 - Los Angeles and Long Beach harbors, California.

    Science.gov (United States)

    2010-07-01

    ...) Radio communications for port entities governing anchorages are as follows: Los Angeles-Long Beach... Defense charter, and vessels requiring use of the explosives anchorage. c. Bunkering and lightering are...

  12. Palm Beach County FL 2007 Seagrass GIS Maps and Trends Analysis (NODC Accession 0061752)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Geographic Information System (GIS) coverage of Palm Beach County seagrasses, mangrove habitat, oyster reef, and spartina. The mapped area is the Lake Worth Lagoon...

  13. Textural studies of beach sediments from Sadashivagad and Karwar, Central west coast of India

    Digital Repository Service at National Institute of Oceanography (India)

    Mislankar, P.G.; Antao, F.B.

    Analysis of textural parameters such as mean grain size, standard deviation, skewness and kurtosis was done for 48 surface sediment samples of two close but separate beaches, namely Sadashivagad and Karwar, in the Central West Coast of India...

  14. Seasonal beach profiling along Malvan and Kotharwadi coast , southern Maharashtra, central west coast of India.

    Digital Repository Service at National Institute of Oceanography (India)

    Ganesan; Gaonkar

    Malvan beach has clearly shown the specific zones of sand erosion and sand accumulation at various periods. This report analyses the field data collected at different seasons at Malvan and presents the results of the field observations with final...

  15. Coastal erosion vulnerability and risk assessment focusing in tourism beach use.

    Science.gov (United States)

    Alexandrakis, George

    2016-04-01

    It is well established that the global market for tourism services is a key source of economic growth. Especially among Mediterranean countries, the tourism sector is one of the principal sectors driving national economies. With the majority of the mass tourism activities concentrated around coastal areas, coastal erosion, inter alia, poses a significant threat to coastal economies that depend heavily on revenues from tourism. The economic implications of beach erosion were mainly focused in the cost of coastal protection measures, instead of the revenue losses from tourism. For this, the vulnerability of the coast to sea level rise and associated erosion, in terms of expected land loss and economic activity need to be identified. To achieve this, a joint environmental and economic evaluation approach of the problem can provide a managerial tool to mitigate the impact of beach erosion in tourism, through realistic cost-benefit scenarios for planning alternative protection measures. Such a multipurpose tool needs to consider social, economic and environmental factors, which relationships can be better understood when distributed and analyzed along the geographical space. The risk assessment is implemented through the estimation of the vulnerability and exposure variables of the coast in two scales. The larger scale estimates the vulnerability in a regional level, with the use environmental factors with the use of CVI. The exposure variable is estimated by the use of socioeconomic factors. Subsequently, a smaller scale focuses on highly vulnerable beaches with high social and economic value. The assessment of the natural processes to the environmental characteristics of the beach is estimated with the use of the Beach Vulnerability Index (BVI) method. As exposure variable, the value of beach width that is capitalized in revenues is implemented through a hedonic pricing model. In this econometric modelling, Beach Value is related with economic and environmental

  16. Plastic debris in the coastal environment: The invincible threat? Abundance of buried plastic debris on Malaysian beaches.

    Science.gov (United States)

    Fauziah, S H; Liyana, I A; Agamuthu, P

    2015-09-01

    Studies on marine debris have gained worldwide attention since many types of debris have found their way into the food chain of higher organisms. Thus, it is crucial that more focus is given to this area in order to curb contaminations in sea food. This study was conducted to quantify plastic debris buried in sand at selected beaches in Malaysia. Marine debris was identified according to size range and distribution, and this information was related to preventive actions to improve marine waste issues. For the purpose of this study, comparison of plastic waste abundance between a recreational beach and fish-landing beaches was also carried out, since the different beach types represent different activities that produce debris. Six beaches along the Malaysian coastline were selected for this study. The plastic types in this study were related to the functions of the beach. While recreational beaches have abundant quantities of plastic film, foamed plastic including polystyrene, and plastic fragment, fish-landing beaches accumulated line and foamed plastic. A total of 2542 pieces (265.30 g m(-2)) of small plastic debris were collected from all six beaches, with the highest number from Kuala Terengganu, at 879 items m(-2) on Seberang Takir Beach, followed by Batu Burok Beach with 780 items m(-2). Findings from studies of Malaysian beaches have provided a clearer understanding of the distribution of plastic debris. This demonstrates that commitments and actions, such as practices of the 'reduce, reuse, recycle' (3R) approach, supporting public awareness programmes and beach clean-up activities, are essential in order to reduce and prevent plastic debris pollution. © The Author(s) 2015.

  17. Littoral Transport Modeling for Ocean Beach and San Francisco Bight, California

    Science.gov (United States)

    2012-07-01

    shape, and moisture content. The avalanche action redistributes the sand volume down the slipface. Dry beach and dune typically has an angle of...longshore ripples around it. The beach fill is clearly eroded more by the sand avalanche combined with wave asymmetry and undertow. COASTAL ENGINEERING...The modeling is conducted for the dune -only plan with approximately 300,000 cy of fine sand (0.2 mm) placement to a stretch of 1-km shoreline. The

  18. Petroleum-influenced beach sediments of the campeche bank, Mexico: Diversity and bacterial community structure assessment

    Energy Technology Data Exchange (ETDEWEB)

    Rosano-Hernandez, M. C.; Ramirez-Saad, H.; Fernandez-Linares, L.; Xoconostle, B.

    2009-07-01

    In Mexican, either spilled or seeped out petroleum impacts nearly 300 km of the beach between Dos Bocas (Tabasco State) to Champoton town (Campeche State), where between 9 to exceptionally 9 to exceptionally 300 tonnes of oil as tar balls have been measured. This study was focused to explore, for the first time, the bacterial diversity and community structure ({alpha}-diversity)- in a kilometric scale on petroleum influenced sediments of 100 km of sandy beach. (Author)

  19. Plastics and microplastics on recreational beaches in Punta del Este (Uruguay): Unseen critical residents?

    Science.gov (United States)

    Lozoya, J P; Teixeira de Mello, F; Carrizo, D; Weinstein, F; Olivera, Y; Cedrés, F; Pereira, M; Fossati, M

    2016-11-01

    Beaches are social-ecological systems that provide several services improving human well-being. However, as one of the major coastal interfaces they are subject to plastic pollution, one of the most significant global environmental threats at present. For the first time for Uruguayan beaches, this study assessed and quantified the accumulation of plastic and microplastic debris on sandy beaches of the major touristic destination Punta del Este during the austral spring of 2013. Aiming to provide valuable information for decision-making, we performed a detailed analysis of plastic debris, their eventual transport pathways to the coast (from land and sea), and the associated persistent pollutants. The results indicated that the smallest size fractions (plastic debris, and their levels did not differ from baseline values reported for similar locations. The abundance of plastic debris was significantly and positively correlated with both the presence of possible land-based sources (e.g. storm-water drains, beach bars, beach access, car parking, and roads), and dissipative beach conditions. The analysis of coastal currents suggested some potential deposition areas along Punta del Este, and particularly for resin pellets, although modeling was not conclusive. From a local management point of view, the development and use of indices that allow predicting trends in the accumulation of plastic debris would be critically useful. The time dimension (e.g. seasonal) should also be considered for this threat, being crucial for locations such as Uruguay, where the use of beaches increases significantly during the summer. This first diagnosis aims to generate scientific baseline, necessary for improved management of plastic litter on beaches and their watersheds. Copyright © 2016 Elsevier Ltd. All rights reserved.

  20. Hydrodynamic factors affecting the persistence of the Exxon Valdez oil in a shallow bedrock beach

    Science.gov (United States)

    Xia, Yuqiang; Li, Hailong; Boufadel, Michel C.; Sharifi, Youness

    2010-10-01

    We report a field study and numerical modeling of multicomponent flow in a tidal gravel beach in Knight Island, Prince William Sound, Alaska, where oil from the 1989 Exxon Valdez oil spill persisted. Field measurements of water table, salinity, and tracer (lithium) concentration were obtained for around a week during the summer of 2008. The numerical model MARUN was used to simulate the field observations. On the basis of field experiments and numerical simulations, the beach was identified to have a two-layered hydraulic structure: a high-permeability surface layer underlain by a low-permeability lower layer. The hydraulic conductivity was found to be 5 × 10-2 m s-1 for the surface layer and 7 × 10-6 m s-1 for the lower layer. The simulations reproduced the observed water table, salinity, and lithium concentrations accurately. The small flow entering the beach from the land side resulted in a beach water table dropping below the interface of the two layers. This seems to be the major reason for the presence of oil in the lower layer. The exchange flow between the beach and the sea due to tidal influence was ˜2.12 m3 d-1 m-1. The patterns of inflow and outflow rates showed that the maximum seawater-groundwater exchange occurred in the middle to high intertidal zone, which explains the persistence of oil in the lower intertidal zone. To explore bioremediation of the beach with nutrient amendment, a numerical simulation of nutrient application on the beach surface was conducted, where the applied nutrient concentration was 5,000 mg L-1. The results showed that the nutrient concentration remaining in oiled areas after a week was larger than 50 mg L-1, which is larger than that needed for maximum microbial growth (2-10 mg L-1). This implies that the bioremediation via nutrient application on the beach surface could be adopted if nutrients were the only limiting factor.

  1. Bacterial pathogen gene abundance and relation to recreational water quality at seven Great Lakes beaches

    Science.gov (United States)

    Oster, Ryan J.; Wijesinghe, Rasanthi U.; Fogarty, Lisa Reynolds; Haack, Sheridan K.; Fogarty, Lisa R.; Tucker, Taaja R.; Riley, Stephen

    2014-01-01

    Quantitative assessment of bacterial pathogens, their geographic variability, and distribution in various matrices at Great Lakes beaches are limited. Quantitative PCR (qPCR) was used to test for genes from E. coli O157:H7 (eaeO157), shiga-toxin producing E. coli (stx2), Campylobacter jejuni (mapA), Shigella spp. (ipaH), and a Salmonella enterica-specific (SE) DNA sequence at seven Great Lakes beaches, in algae, water, and sediment. Overall, detection frequencies were mapA>stx2>ipaH>SE>eaeO157. Results were highly variable among beaches and matrices; some correlations with environmental conditions were observed for mapA, stx2, and ipaH detections. Beach seasonal mean mapA abundance in water was correlated with beach seasonal mean log10E. coli concentration. At one beach, stx2 gene abundance was positively correlated with concurrent daily E. coli concentrations. Concentration distributions for stx2, ipaH, and mapA within algae, sediment, and water were statistically different (Non-Detect and Data Analysis in R). Assuming 10, 50, or 100% of gene copies represented viable and presumably infective cells, a quantitative microbial risk assessment tool developed by Michigan State University indicated a moderate probability of illness for Campylobacter jejuni at the study beaches, especially where recreational water quality criteria were exceeded. Pathogen gene quantification may be useful for beach water quality management.

  2. Severe cerebral desaturation during shoulder arthroscopy in the beach-chair position

    DEFF Research Database (Denmark)

    Dippmann, Christian; Winge, Søren; Nielsen, Henning Bay

    2010-01-01

    During shoulder arthroscopy in the beach-chair position, cerebral ischemia may be a serious complication because prolonged hypotension may affect regional cerebral oxygen supply. We present the cases of 2 patients in whom a reduction in mean arterial pressure after anesthesia provoked a decrease...... cerebral oxygenation. During surgery in the beach-chair position, hypotension must be avoided, and in all patients regional, cerebral oxygenation should be monitored and optimized....

  3. Monsoonal effects on beach and offshore sediments from kalbadevi bay, Ratnagiri, Maharashtra state, India.

    Digital Repository Service at National Institute of Oceanography (India)

    Valsangkar, A.B.; Farnnades, D.

    DAV International Journal of Science Volume-3 Issue-1 2014 ISSN: 2277-5536 (Print); 2277-5641 (Online) 70 MONSOONAL EFFECTS ON BEACH AND OFFSHORE SEDIMENTS... in Ratnagiri to carry out `Environmental Impact Assessment (EIA) studies for placer mining` under the ‘Capacity Building for Sand Mining, Network Program’ of the Council of Scientific and Industrial Research (CSIR), New Delhi. The beach sediment samples from...

  4. Sensible Heat Flux Related to Variations in Atmospheric Turbulence Kinetic Energy on a Sandy Beach

    Science.gov (United States)

    2017-06-01

    FLUX RELATED TO VARIATIONS IN ATMOSPHERIC TURBULENCE KINETIC ENERGY ON A SANDY BEACH by Jessica S. Koscinski June 2017 Thesis Advisor...KINETIC ENERGY ON A SANDY BEACH 5. FUNDING NUMBERS 6. AUTHOR(S) Jessica S. Koscinski 7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) Naval...Sensible heat flux, turbulence kinetic energy , surf zone 15. NUMBER OF PAGES 57 16. PRICE CODE 17. SECURITY CLASSIFICATION OF REPORT

  5. Petroleum-influenced beach sediments of the campeche bank, Mexico: Diversity and bacterial community structure assessment

    International Nuclear Information System (INIS)

    Rosano-Hernandez, M. C.; Ramirez-Saad, H.; Fernandez-Linares, L.; Xoconostle, B.

    2009-01-01

    In Mexican, either spilled or seeped out petroleum impacts nearly 300 km of the beach between Dos Bocas (Tabasco State) to Champoton town (Campeche State), where between 9 to exceptionally 9 to exceptionally 300 tonnes of oil as tar balls have been measured. This study was focused to explore, for the first time, the bacterial diversity and community structure (α-diversity)- in a kilometric scale on petroleum influenced sediments of 100 km of sandy beach. (Author)

  6. Impacts of beach wrack removal via grooming on surf zone water quality.

    Science.gov (United States)

    Russell, Todd L; Sassoubre, Lauren M; Zhou, Christina; French-Owen, Darien; Hassaballah, Abdulrahman; Boehm, Alexandria B

    2014-02-18

    Fecal indicator bacteria (FIB) are used to assess the microbial water quality of recreational waters. Increasingly, nonfecal sources of FIB have been implicated as causes of poor microbial water quality in the coastal environment. These sources are challenging to quantify and difficult to remediate. The present study investigates one nonfecal FIB source, beach wrack (decaying aquatic plants), and its impacts on water quality along the Central California coast. The prevalence of FIB on wrack was studied using a multibeach survey, collecting wrack throughout Central California. The impacts of beach grooming, to remove wrack, were investigated at Cowell Beach in Santa Cruz, California using a long-term survey (two summers, one with and one without grooming) and a 48 h survey during the first ever intensive grooming event. FIB were prevalent on wrack but highly variable spatially and temporally along the nine beaches sampled in Central California. Beach grooming was generally associated with either no change or a slight increase in coastal FIB concentrations and increases in surf zone turbidity and silicate, phosphate, and dissolved inorganic nitrogen concentrations. The findings suggest that beach grooming for wrack removal is not justified as a microbial pollution remediation strategy.

  7. Factors Influencing the Spatial Variation of Microplastics on High-Tidal Coastal Beaches in Korea.

    Science.gov (United States)

    Kim, In-Sung; Chae, Doo-Hyeon; Kim, Seung-Kyu; Choi, SooBong; Woo, Seung-Bum

    2015-10-01

    The presence and distribution characteristics of microplastics become a big issue due to the adverse effects on marine organisms caused by not only microplastics but any incorporated and/or adsorbed pollutants. Distribution of microplastics (50- to 5000-μm size) was determined for three sandy beaches on an isolated island in a high-tidal costal region to elucidate spatial distributions in relation to beach locations. The abundances of microplastics (n = 21) measured were 56-285,673 (46,334 ± 71,291) particles/m(2) corresponding to the highest level globally. Out of observed polymer types, expanded polystyrene was overwhelmingly dominant. Although lying toward the estuary of the largest river in the country, the north-side beach contained a 100-fold lower abundance than two south-side beaches that faced southerly wind and currents that were prevalent throughout the study season. In addition, distinct differences between the beaches on either side were also present in terms of size distribution and spatial homogeneity of microplastics on the same beach. Winds and currents are therefore considered to be the driving forces in the distribution of microplastics.

  8. Effect of coastal urbanization on sandy beach coleoptera Phaleria maculata (Kulzer, 1959) in northern Chile.

    Science.gov (United States)

    González, Sergio A; Yáñez-Navea, Katherine; Muñoz, Mauricio

    2014-06-15

    The beetle Phaleria maculata is a common inhabitant of the upper intertidal fringe of Chilean beaches. Anthropogenic intervention in coastal areas has increased intensely, leading to changes in the flora and fauna of sandy beaches. To examine the impact of human activities on P. maculata, we studied several beaches along the northern Chilean coast. Beaches were characterized based on morphodynamics and the level of intervention, leading to the estimation of an "Urbanization Index" based on various indicators. The analysis showed a significant inverse correlation between the rate of urbanization and night sky quality. Larval and adult beetles were almost absent on beaches with high levels of urbanization. The results of simple and multiple correlations based on nMDS ordination showed an inverse relationship between increases in urbanization and the abundance of beetles. Because darkling beetles are very sensitive to human interventions on sandy beaches, we suggest that they are ideal indicator organisms for the health of these environments. Copyright © 2014 Elsevier Ltd. All rights reserved.

  9. The Early Shorebird Will Catch Fewer Invertebrates on Trampled Sandy Beaches.

    Science.gov (United States)

    Schlacher, Thomas A; Carracher, Lucy K; Porch, Nicholas; Connolly, Rod M; Olds, Andrew D; Gilby, Ben L; Ekanayake, Kasun B; Maslo, Brooke; Weston, Michael A

    2016-01-01

    Many species of birds breeding on ocean beaches and in coastal dunes are of global conservation concern. Most of these species rely on invertebrates (e.g. insects, small crustaceans) as an irreplaceable food source, foraging primarily around the strandline on the upper beach near the dunes. Sandy beaches are also prime sites for human recreation, which impacts these food resources via negative trampling effects. We quantified acute trampling impacts on assemblages of upper shore invertebrates in a controlled experiment over a range of foot traffic intensities (up to 56 steps per square metre) on a temperate beach in Victoria, Australia. Trampling significantly altered assemblage structure (species composition and density) and was correlated with significant declines in invertebrate abundance and species richness. Trampling effects were strongest for rare species. In heavily trafficked plots the abundance of sand hoppers (Amphipoda), a principal prey item of threatened Hooded Plovers breeding on this beach, was halved. In contrast to the consistently strong effects of trampling, natural habitat attributes (e.g. sediment grain size, compactness) were much less influential predictors. If acute suppression of invertebrates caused by trampling, as demonstrated here, is more widespread on beaches it may constitute a significant threat to endangered vertebrates reliant on these invertebrates. This calls for a re-thinking of conservation actions by considering active management of food resources, possibly through enhancement of wrack or direct augmentation of prey items to breeding territories.

  10. Mycological assessment of sediments in Ligurian beaches in the Northwestern Mediterranean: pathogens and opportunistic pathogens.

    Science.gov (United States)

    Salvo, Vanessa-Sarah; Fabiano, Mauro

    2007-05-01

    Sediments of five Ligurian beaches in compliance with European Union bathing water regulations were studied based on the characteristics of the fungal assemblage during the tourism season. Among the 179 taxa of filamentous fungi isolated, 120 were opportunistic pathogens, such as Acremonium sp., and the genus Penicillium was also present as the pathogenic species P. citrinum. Furthermore, 5% of the total filamentous fungi belonged to the dermatophyte genus Microsporum, whose species can cause mycoses. Beach sediments showed elevated densities of opportunistic pathogens, of pathogenic filamentous fungi, and of yeasts during the tourism season. Although monitoring of beach sediments for microbiological contamination is not mandatory, and disease transmission from sediments has not yet been demonstrated, our study suggests that beach sediments may act as a reservoir of potential pathogens, including fungi. In addition, the mycoflora displayed high sensitivity to critical environmental situations in the beaches studied. Therefore, the fungal community can be a useful tool for assessing the quality of sandy beaches in terms of sanitary and environmental quality.

  11. Optimal nutrient application strategy for bioremediation of oil-polluted beaches. Volume 1

    International Nuclear Information System (INIS)

    Li, H.; Zhao, Q.; Boufadel, M.C.; Venosa, A.D.

    2007-01-01

    Offshore oil spills in coastal areas generally occur in the intertidal zone of beaches and affect the top 25 cm of soil, known as the bioremediation zone. Biostimulation by nutrient application such as nitrogen and phosphorus is a viable technology for restoring oil-contaminated beaches. The key for achieving a rapid cost-effective cleanup is to ensure maximum nutrient residence time. This study proposed a strategy that consisted of injecting nutrients through a perforated pipe at the high tide line. Beach hydraulics were numerically simulated to estimate the optimal injection flow rate of nutrient solution. It was shown that the optimal application should begin following high tide just as it drops and should last for half a tidal cycle. The flow rate ensures that the saturated wet-front of the nutrient solution on the beach surface moves seaward with the same speed of the falling tide keeping a constant distance with the tide line. The numerical results were generalized to a broad range of hydraulic and tidal properties of beaches using an innovative dimensionless formulation for water flow and solute transport in porous media. Nomographs were presented to provide the flow rate based on 4 parameters, notably the beach slope, permeability, tidal amplitude and tidal period. 29 refs., 1 tab., 5 figs

  12. Groundwater flow due to a nonlinear wave set-up on a permeable beach

    Directory of Open Access Journals (Sweden)

    Anna Przyborska

    2014-06-01

    Full Text Available Water flow through the beach body plays an important role in the biological status of the organisms inhabiting the beach sand. For tideless seas, the groundwater flow in shallow water is governed entirely by the surface wave dynamics on the beach. As waves propagate towards the shore, they become steeper owing to the decreasing water depth and at some depth, the waves lose their stability and start to break. When waves break, their energy is dissipated and the spatial changes of the radiation stress give rise to changes in the mean sea level, known as the set-up. The mean shore pressure gradient due to the wave set-up drives the groundwater circulation within the beach zone. This paper discusses the circulation of groundwater resulting from a nonlinear set-up. The circulation of flow is compared with the classic Longuet-Higgins (1983 solution and the time series of the set-up is considered for a 24 h storm. Water infiltrates into the coastal aquifer on the upper part of the beach near the maximum run-up and exfiltration occurs on the lower part of the beach face near the breaking point.

  13. The presence and near-shore transport of human fecal pollution in Lake Michigan beaches

    Science.gov (United States)

    Molloy, S.L.; Liu, L.B.; Phanikumar, M.S.; Jenkins, T.M.; Wong, M.V.; Rose, J.B.; Whitman, R.L.; Shively, D.A.; Nevers, M.B.

    2005-01-01

    The Great Lakes are a source of water for municipal, agricultural and industrial use, and support significant recreation, commercial and sport fishing industries. Every year millions of people visit the 500 plus recreational beaches in the Great Lakes. An increasing public health risk has been suggested with increased evidence of fecal contamination at the shoreline. To investigate the transport and fate of fecal pollution at Great Lakes beaches and the health risk associated with swimming at these beaches, the near-shore waters of Mt Baldy Beach, Lake Michigan and Trail Creek, a tributary discharging into the lake were examined for fecal pollution indicators. A model of surf zone hydrodynamics coupled with a transport model with first-order inactivation of pollutant was used to understand the relative importance of different processes operating in the surf zone (e.g. physical versus biological processes). The Enterococcus human fecal pollution marker, which targets a putative virulence factor, the enterococcal surface protein (esp) in Enterococcus faecium, was detected in 2/28 samples (7%) from the tributaries draining into Lake Michigan and in 6/30 samples (20%) from Lake Michigan beaches. Preliminary analysis suggests that the majority of fecal indicator bactateria variation and water quality changes at the beaches can be explained by inputs from the influential stream and hydrometeorological conditions. Using modeling methods to predict impaired water quality may help reduce potential health threats to recreational visitors.

  14. Ecological Evaluation of a Beach Nourishment Project at Hallandale (Broward County) Florida. Volume II. Evaluation of Benthic Communities Adjacent to a Restored Beach, Hallandale (Broward County), Florida.

    Science.gov (United States)

    1980-03-01

    Udotea conglutinata, Halimeda opuntia , and Ulva Zactuca. Marine invertebrates on the first reef were notably scarce, represented primarily by...Beach Golden Beach HR-i HR-2 HR-3 11R-4 GR-l GR-2 GR-3 GR-4 DIVISION CIILOROPIIYTA Ikilimeda opuntia C 0 Udotea congiutinata C A 0 0 0 U~va lactuca C 0... diseased or damaged; the causes of these conditions could not be determined. Sponges, represented primarily by Cliona amcpa and HaZiclona rubens, were more

  15. Management of vertebral compression fracture in general practice: BEACH program.

    Directory of Open Access Journals (Sweden)

    Rodrigo Z Megale

    Full Text Available The pain associated with vertebral compression fractures can cause significant loss of function and quality of life for older adults. Despite this, there is little consensus on how best to manage this condition.To describe usual care provided by general practitioners (GPs in Australia for the management of vertebral compression fractures.Data from the Bettering the Evaluation And Care of Health (BEACH program collected between April 2005 and March 2015 was used for this study. Each year, a random sample of approximately 1,000 GPs each recorded information on 100 consecutive encounters. We selected those encounters at which vertebral compression fracture was managed. Analyses of management options were limited to encounters with patients aged 50 years or over.i patient demographics; ii diagnoses/problems managed; iii the management provided for vertebral compression fracture during the encounter. Robust 95% confidence intervals, adjusted for the cluster survey design, were used to assess significant differences between group means.Vertebral compression fractures were managed in 211 (0.022%; 95% CI: 0.018-0.025 of the 977,300 BEACH encounters recorded April 2005- March 2015. That provides a national annual estimate of 26,000 (95% CI: 22,000-29,000 encounters at which vertebral fractures were managed. At encounters with patients aged 50 years or over (those at higher risk of primary osteoporosis, prescription of analgesics was the most common management action, particularly opioids analgesics (47.1 per 100 vertebral fractures; 95% CI: 38.4-55.7. Prescriptions of paracetamol (8.2; 95% CI: 4-12.4 or non-steroidal anti-inflammatory drugs (4.1; 95% CI: 1.1-7.1 were less frequent. Non-pharmacological treatment was provided at a rate of 22.4 per 100 vertebral fractures (95% CI: 14.6-30.1. At least one referral (to hospital, specialist, allied health care or other was given for 12.3 per 100 vertebral fractures (95% CI: 7.8-16.8.The prescription of oral

  16. Population biology of the gastropod Olivella minuta (Gastropoda, Olividae) on two sheltered beaches in southeastern Brazil

    Science.gov (United States)

    Petracco, Marcelo; Camargo, Rita Monteiro; Tardelli, Daniel Teixeira; Turra, Alexander

    2014-10-01

    The structure, dynamics and production of two populations of the olivid gastropod Olivella minuta were analyzed through monthly sampling from November 2009 through October 2011 on two sandy beaches, Pernambuco (very sheltered) and Barequeçaba (sheltered) in São Paulo state (23°48'S), southeastern Brazil. On both beaches, samples were taken along five transects established perpendicular to the waterline. Parameters of the von Bertalanffy growth function were estimated for both populations from monthly length-frequency distributions. The production and turnover ratios were determined using the mass-specific growth rate method. The population on the less-sheltered Barequeçaba Beach was less abundant (120.02 ± 22.60 ind m-1) than on Pernambuco Beach (3295.30 ± 504.86 ind m-1 (±SE)), which we attribute to the greater environmental stability of the latter. Conversely, the mean length, size of the largest individual, and body mass were higher at Barequeçaba than at Pernambuco. The significant differences in the growth of individuals and the mortality rate (Z) between the beaches suggest that density-dependent processes were operating at Pernambuco Beach. The production and P/B ratio at Pernambuco (12.12 g AFDM m-1 year-1 and 1.91 year-1) were higher than at Barequeçaba (0.82 g AFDM m-1 year-1 and 1.06 year-1). The difference in production can be attributed to the higher abundance on Pernambuco, while the higher P/B ratio resulted from the scarcity of smaller individuals in the intertidal zone of Barequeçaba. The P/B ratio estimated for the Pernambuco population is the highest found so far for sandy-beach gastropods. This study reinforces the theory that biological interactions are important regulators of sheltered sandy-beach populations. Future studies with multi-beach sampling are needed to better understand the life-history variations of O. minuta along gradients of degree of exposure of sandy beaches.

  17. Temporal variation of sandy beach macrofauna at two sites with distinct environmental conditions on Cassino Beach, extreme southern Brazil

    Directory of Open Access Journals (Sweden)

    Pedro de Sá Rodrigues da Silva

    2008-12-01

    Full Text Available Temporal variations of the macrofauna of sandy beaches have been related to variations in the beach morphodynamics and also to the population dynamics of dominant species. The aim of this article is to describe the temporal variation of the intertidal macrofauna at two sites with distinct environmental condition on Cassino Beach, extreme southern Brazil. At each site three transect lines 50 m apart were defined perpendicular to the shore line, from which samples were collected monthly in triplicate at 4 intertidal levels (10 m apart from June 2004 to May 2005. During winter a generally low density was observed, due to the absence of recruitments and to the mud deposition, which occurred just before sampling (in April 2004, and to low intensity stranding events. Spring witnessed a population explosion of Scolelepis gaucha, a migration of Mesodesma mactroides adults from the subtidal zone, and a strong stranding event. In the summer, recruitment of M. mactroides, Donax hanleyanus and Emerita brasiliensis was observed. Fall was characterized by low densities, except for D. hanleyanus recruitment. The macrofauna at both sites showed a striking seasonal variation in density and diversity, perhaps attributable to the recruitment of numerically dominant species and physical disturbances (stranding and mud deposition.Variações sazonais da macrofauna bentônica de praias arenosas têm sido relacionadas com variações da morfodinâmica da praia e também aos recrutamentos das espécies dominantes. Este trabalho objetiva avaliar a variabilidade temporal da macrofauna da zona entremarés de dois locais com distintas características ambientais na praia do Cassino, extremo sul do Brasil. Em cada local foram demarcadas três transversais (separadas por 50m perpendiculares à linha de água, nas quais amostras foram coletadas em triplicata em 4 níveis entremarés (separados por 10 m, entre junho/2004 e maio/2005. Durante o inverno ocorreram baixas

  18. Analysis of multi-scale morphodynamic behaviour of a high energy beach facing the Sea of Japan

    Directory of Open Access Journals (Sweden)

    Harshinie Urmila Karunarathna

    2015-07-01

    Full Text Available Monthly cross shore beach profiles measured at the Ogata Wave Observation pier located in Joetsu-Ogata Coast, Niigata Prefecture, Japan, was analysed to investigate multi-scale morphodynamic beach behaviour. The Ogata beach, facing the Sea of Japan, is subjected to high energy wave conditions with that has a strong winter/summer seasonal signature. The measured beach profiles at the beach show very significant variability where cross-shore movement of shoreline position and lowering of the beach at the location of measurements exceed 20 m and 4 m respectively. The shoreline position seems to follow the seasonal variability of incident wave climate where a correlation coefficient of 0.77 was found between monthly averaged incident significant wave height and the measured monthly shoreline position. During the summer months, the beach variability mostly concentrated to in the sub-tidal part of the profile, while a significant amount of upper beach change was observed during the winter months. The beach profile shape was found to rotate between three different beach states in time; (i concave reflective profile; (ii profile with sub-tidal berm; and (iii gentle, dissipative profile. Empirical Orthogonal Function (EOF analysis of the profiles show that the variability of beach profile shape is dominated by (a upper shoreface steepening; (b sub tidal berm development and dissipation; and (c variability of the overall profile slope, which have some longer than seasonal cyclic signatures. Comparison of temporal EOFs with climate indices such as Southern Oscillation Index and Pacific Decadal Oscillation index shows notable some correlations between profile change and climatic variability in the region. The analysis also shows that the morphological variability of Joetsu-Ogata Coast has similarities and some distinct spatial and temporal differences to beaches of similar kind found elsewhere.

  19. Surf, sand, scrapes and stings: First aid incidents involving children at New Zealand beaches, 2007–2012.

    Science.gov (United States)

    Moran, Kevin; Webber, Jonathon

    2014-03-01

    Aims: In spite of the popularity of beaches for family recreation, little is known about childhood injuries sustained at beaches. It is the purpose of this study to analyse data from incidents necessitating first aid treatment from reports compiled by surf lifeguards on New Zealand beaches.Method: A retrospective analysis of first aid incidents involving children (safety via greater care giver awareness, the use of protective clothing and footwear, and child safety promotion via health professionals and safety organisations are discussed.

  20. Field and Model Study to Define Baseline Conditions of Beached Oil Tar Balls along Florida’s First Coast

    OpenAIRE

    Peter Bacopoulos; James David Lambert; Mary Hertz; Luis Montoya; Terry Smith

    2014-01-01

    Anecdotal data are currently the best data available to describe baseline conditions of beached oil tar balls on Florida’s First Coast beaches. This study combines field methods and numerical modeling to define a data-driven knowledge base of oil tar ball baseline conditions. Outcomes from the field study include an established methodology for field data collection and laboratory testing of beached oil tar balls, spatial maps of collected samples and analysis of the data as to transport/wash-...

  1. Baseline for beached marine debris on Sand Island, Midway Atoll

    Science.gov (United States)

    Ribic, Christine; Seba B. Sheavly,; John Klavitter,

    2012-01-01

    Baseline measurements were made of the amount and weight of beached marine debris on Sand Island, Midway Atoll, June 2008–July 2010. On 23 surveys, 32,696 total debris objects (identifiable items and pieces) were collected; total weight was 740.4 kg. Seventy-two percent of the total was pieces; 91% of the pieces were made of plastic materials. Pieces were composed primarily of polyethylene and polypropylene. Identifiable items were 28% of the total; 88% of the identifiable items were in the fishing/aquaculture/shipping-related and beverage/household products-related categories. Identifiable items were lowest during April–August, while pieces were at their lowest during June–August. Sites facing the North Pacific Gyre received the most debris and proportionately more pieces. More debris tended to be found on Sand Island when the Subtropical Convergence Zone was closer to the Atoll. This information can be used for potential mitigation and to understand the impacts of large-scale events such as the 2011 Japanese tsunami.

  2. Spatial variability in the concentrations of metals in beached microplastics.

    Science.gov (United States)

    Vedolin, M C; Teophilo, C Y S; Turra, A; Figueira, R C L

    2017-10-12

    Heavy metals and microplastics have been considered as threats to the marine environment and the interactions between these two pollutants are poorly understood. This study investigates the interactions between metals adsorbed in pellets collected randomly from 19 beaches along the coast of São Paulo State in southeastern Brazil, comparing these levels with those in virgin pellets. The samples were analyzed for Al, Cr, Cu, Fe, Mn, Sn, Ti and Zn by inductively coupled plasma optical emission spectroscopy (ICP-OES). The polymers were solubilized via acid digestion. The highest levels occurred with Fe (227.78mgkg -1 - Itaguaré) and Al (45.27mgkg -1 - Guaraú) in the same areas, which are closer to the Port of Santos. The metal adsorption on pellets collected is greater than that on virgin pellets. In this context, pellets can be considered to be a carrier for the transport of metals in the environment, even in small quantities. Copyright © 2017 Elsevier Ltd. All rights reserved.

  3. Tracking of Ball and Players in Beach Volleyball Videos

    Science.gov (United States)

    Gomez, Gabriel; Herrera López, Patricia; Link, Daniel; Eskofier, Bjoern

    2014-01-01

    This paper presents methods for the determination of players' positions and contact time points by tracking the players and the ball in beach volleyball videos. Two player tracking methods are compared, a classical particle filter and a rigid grid integral histogram tracker. Due to mutual occlusion of the players and the camera perspective, results are best for the front players, with 74,6% and 82,6% of correctly tracked frames for the particle method and the integral histogram method, respectively. Results suggest an improved robustness against player confusion between different particle sets when tracking with a rigid grid approach. Faster processing and less player confusions make this method superior to the classical particle filter. Two different ball tracking methods are used that detect ball candidates from movement difference images using a background subtraction algorithm. Ball trajectories are estimated and interpolated from parabolic flight equations. The tracking accuracy of the ball is 54,2% for the trajectory growth method and 42,1% for the Hough line detection method. Tracking results of over 90% from the literature could not be confirmed. Ball contact frames were estimated from parabolic trajectory intersection, resulting in 48,9% of correctly estimated ball contact points. PMID:25426936

  4. Characteristics of drift pumice from New Caledonia beaches

    Science.gov (United States)

    Nicholson, Kirsten Ngaire; Stewart, Ariel

    2016-12-01

    Siliceous drift pumice was collected from a total of 40 beaches around the main island of New Caledonia, Southwest Pacific, in order to determine its provenance. New Caledonia is enclosed by a barrier reef lagoon whose 2008 designation as a UNESCO World Heritage Site brought attention to the environmental degradation caused by a century of open cast nickel mining. The frequent, voluminous pumice eruptions in the Southwest Pacific provide ample source material that is somewhat durable, highly transportable in water, and easy to collect and analyze. Geochemical and mineralogical analyses were used to identify the source of the pumice in order to map the transport vector across the open ocean and into the lagoon. Drift pumice was sampled during 2008 and 2010. The mineral assemblage of the pumice was consistently calcic plagioclase, clinopyroxene, orthopyroxene, and opaque minerals. All of the pumice was of fairly uniform geochemistry: low in mafic elements, low in alkalis, with LILE enriched compared to HFSE, and negative Eu, Ti, and Zr anomalies. The pumice is predominately dacitic and tholeiitic. This geochemical signature was consistent with published data from the Tonga arc, which is further supported by the mineralogy. With the exception of two samples (which probably came from either the Kermadec arc or Vanuatu) all of the pumice comes from the Tonga arc. The samples from 2008 are consistent with pumice erupted from Metis Shoal in 2006, and the majority of 2010 samples are consistent with pumice erupted from an unnamed volcano (0403-091) that erupted in 2001.

  5. Microplastic concentrations in beach sediments along the German Baltic coast.

    Science.gov (United States)

    Stolte, Andrea; Forster, Stefan; Gerdts, Gunnar; Schubert, Hendrik

    2015-10-15

    The contamination with microplastic particles and fibres was evaluated on beaches along the German Baltic coast. Sediments were sampled near the Warnow and Oder/Peene estuaries, on Rügen island and along the Rostock coast to derive possible entry pathways. Seasonal variations were monitored along the Rostock coast from March to July 2014. After density separation in saline solution, floating particles were found to be dominated by sand grains. Water surface tension is shown to be sufficient to explain floatation of grains with sizes less than 1.5mm. Selecting intensely coloured particles and fibres, we find lower limits of the microplastic concentrations of 0-7 particles/kg and 2-11 fibres/kg dry sediment. The largest microplastic contaminations are measured at the Peene outlet into the Baltic Sea and in the North Sea Jade Bay. City discharges, industrial production sites, fishing activity and tourism are the most likely sources for the highest microplastic concentrations. Copyright © 2015 Elsevier Ltd. All rights reserved.

  6. Trait-dependent modification of facilitation on cobble beaches.

    Science.gov (United States)

    Irving, Andrew D; Bertness, Mark D

    2009-11-01

    Fundamental gaps remain in our knowledge of how positive species interactions, such as facilitation and mutualism, structure and maintain populations and communities. Foundation species create extensive biogenic habitats, but we know little of how their traits, such as density, age, and patch size, modify their ability to facilitate other species. We tested the role of facilitator traits in cobble beach plant communities in New England, USA. In this system, intertidal beds of the cordgrass Spartina alterniflora facilitate populations of halophytic forbs at higher shore elevations by buffering wave action, stabilizing cobbles, and limiting physical disturbance. Using descriptive and experimental techniques, we tested the hypotheses that (1) the density and height of cordgrass shoots modify the strength of the cordgrass-forb facilitation, and (2) cordgrass peat alone contributes to the facilitation of forbs. Increased shoot density, as well as the combination of cordgrass peat and shoots, positively affected two life history stages (seedling and adult) of the abundant forb Suaeda linearis, demonstrating that cordgrass traits modify the strength of facilitation in this system. Since the expression of traits varies within and among patches of any given foundation species, traits can and should be used to predict the strength of facilitation, to guide the development of conservation strategies, and to develop more accurate models of species interactions.

  7. Tracking of ball and players in beach volleyball videos.

    Directory of Open Access Journals (Sweden)

    Gabriel Gomez

    Full Text Available This paper presents methods for the determination of players' positions and contact time points by tracking the players and the ball in beach volleyball videos. Two player tracking methods are compared, a classical particle filter and a rigid grid integral histogram tracker. Due to mutual occlusion of the players and the camera perspective, results are best for the front players, with 74,6% and 82,6% of correctly tracked frames for the particle method and the integral histogram method, respectively. Results suggest an improved robustness against player confusion between different particle sets when tracking with a rigid grid approach. Faster processing and less player confusions make this method superior to the classical particle filter. Two different ball tracking methods are used that detect ball candidates from movement difference images using a background subtraction algorithm. Ball trajectories are estimated and interpolated from parabolic flight equations. The tracking accuracy of the ball is 54,2% for the trajectory growth method and 42,1% for the Hough line detection method. Tracking results of over 90% from the literature could not be confirmed. Ball contact frames were estimated from parabolic trajectory intersection, resulting in 48,9% of correctly estimated ball contact points.

  8. Tracking of ball and players in beach volleyball videos.

    Science.gov (United States)

    Gomez, Gabriel; Herrera López, Patricia; Link, Daniel; Eskofier, Bjoern

    2014-01-01

    This paper presents methods for the determination of players' positions and contact time points by tracking the players and the ball in beach volleyball videos. Two player tracking methods are compared, a classical particle filter and a rigid grid integral histogram tracker. Due to mutual occlusion of the players and the camera perspective, results are best for the front players, with 74,6% and 82,6% of correctly tracked frames for the particle method and the integral histogram method, respectively. Results suggest an improved robustness against player confusion between different particle sets when tracking with a rigid grid approach. Faster processing and less player confusions make this method superior to the classical particle filter. Two different ball tracking methods are used that detect ball candidates from movement difference images using a background subtraction algorithm. Ball trajectories are estimated and interpolated from parabolic flight equations. The tracking accuracy of the ball is 54,2% for the trajectory growth method and 42,1% for the Hough line detection method. Tracking results of over 90% from the literature could not be confirmed. Ball contact frames were estimated from parabolic trajectory intersection, resulting in 48,9% of correctly estimated ball contact points.

  9. Further assessment of survey results from the beaches around Sellafield

    International Nuclear Information System (INIS)

    Webb, G.A.M.; Fry, F.A.

    1984-02-01

    Contaminated material continues to be found on the beaches, estuaries and salt marshes. An initial apparent fall in the frequency of discovery of highly contaminated samples has not been sustained. In the last week of surveys reported here, a change was noted in the type of contaminated material found. Results averaged on the entire period from 19 November 1983 to 13 February 1984 suggest that about 2 items every kilometre might be found giving a reading in excess of 1 mR/L βγ and 1 item every few kilometres giving a reading in excess of 10 mR/h βγ, with actual contact dose rates possible of about a hundred times higher than apparent instrument readings. A member of the public could pick up an item contaminated in excess of the 10 mR/h βγ or 1000 cps criterion and hold it for sufficiently long to sustain an appreciable dose to the skin surface. These and laboratory studies of contaminated materials confirmed the Board's views that the only situations of concern are those of prolonged handling of debris and contamination of the skin, rather than intake by ingestion or inhalation. (U.K.)

  10. Development of predictive models for determining enterococci levels at Gulf Coast beaches.

    Science.gov (United States)

    Zhang, Zaihong; Deng, Zhiqiang; Rusch, Kelly A

    2012-02-01

    The US EPA BEACH Act requires beach managers to issue swimming advisories when water quality standards are exceeded. While a number of methods/models have been proposed to meet the BEACH Act requirement, no systematic comparisons of different methods against the same data series are available in terms of relative performance of existing methods. This study presents and compares three models for nowcasting and forecasting enterococci levels at Gulf Coast beaches in Louisiana, USA. One was developed using the artificial neural network (ANN) in MATLAB Toolbox and the other two were based on the US EPA Virtual Beach (VB) Program. A total of 944 sets of environmental and bacteriological data were utilized. The data were collected and analyzed weekly during the swimming season (May-October) at six sites of the Holly Beach by Louisiana Beach Monitoring Program in the six year period of May 2005-October 2010. The ANN model includes 15 readily available environmental variables such as salinity, water temperature, wind speed and direction, tide level and type, weather type, and various combinations of antecedent rainfalls. The ANN model was trained, validated, and tested using 308, 103, and 103 data sets (collected in 2007, 2008, and 2009) with an average linear correlation coefficient (LCC) of 0.857 and a Root Mean Square Error (RMSE) of 0.336. The two VB models, including a linear transformation-based model and a nonlinear transformation-based model, were constructed using the same data sets. The linear VB model with 6 input variables achieved an LCC of 0.230 and an RMSE of 1.302 while the nonlinear VB model with 5 input variables produced an LCC of 0.337 and an RMSE of 1.205. In order to assess the predictive performance of the ANN and VB models, hindcasting was conducted using a total of 430 sets of independent environmental and bacteriological data collected at six Holly Beach sites in 2005, 2006, and 2010. The hindcasting results show that the ANN model is capable of

  11. Seasonal variation of bivalve larvae on an exposed sandy beach on Kashima-nada: Tips for the sandy beach recruitment process

    Science.gov (United States)

    Sawada, Hideki; Saito, Hajime; Adachi, Kumiko; Toyohara, Haruhiko

    2011-02-01

    Bivalves are often the dominant macrobenthos species in exposed sandy beach environments. However, our understanding of their recruitment processes before post-settlement stages on sandy beaches with highly energetic environments is incomplete. To clarify the characteristics of the free-swimming planktonic stage that affects recruitment efficiency in sandy shore ecosystems, we investigated the temporal (weekly-biweekly) variation of bivalve planktonic larval concentration coupled with oceanographic conditions on an exposed sandy shore on the sea of Kashima-nada, Japan, from summer 2003 to autumn 2005. Larvae were observed throughout the year, but the surge of larval concentration composed of sandy beach and sessile bivalves occurred most prominently in summer, from August to September. The peak concentration of larvae during this season was more than 1000 times higher than in other seasons. The larval concentration was positively correlated with water temperature and northward wind velocity and negatively correlated with each of the nutrient concentrations. On the other hand, chlorophyll a concentration and salinity seemed to have little effect on the larval concentration. Based on this fundamental knowledge, further investigations about planktonic larvae in sandy beaches are needed.

  12. Experimental Investigations of Effect of Sulphur on Beach Sand–Fly Ash–Asphalt (S-F-A) Paving Mixes

    OpenAIRE

    Satyakumar, M.; Satheeshchandran, R.

    2013-01-01

    The main components of the flexible pavements are asphalt and aggregates. But in most of the places in India there is shortage of the good quality aggregates (especially coarse aggregates), at the same time beach sand is available in plenty in many regions. Due to relative abundance of beach sand, the studies on the utilities of the beach sand in paving mixes are worth taking up. But beach Sand-Asphalt mix alone is not suitable for pavement construction, because of its low stability and high ...

  13. [Effects of human disturbance on the population dynamics of Ocypode quadrata (Decapoda: Ocypodidae) in beaches of the Mexican Caribbean].

    Science.gov (United States)

    Ocaña, Frank A; Navarrete, Alberto de Jesús; Carrillo, Rosa María de Jesús; Oliva-Rivera, José J

    2016-12-01

    The ghost crab Ocypode quadrata is a relevant species in the Western Atlantic beaches, and has been proposed as an indicator of human impact in these ecosystems. Eventhough some studies have covered various aspects of its natural history, no evaluations on the effects of human disturbance on its population dynamics have been made. This work compared the abundance, growth, and mortality of O. quadrata in two disturbed beaches (Aventuras and Majahual) and two preserved beaches (Xcacel and Puerto Angel) from the Mexican Caribbean. For this, nine samplings were made on each beach (every two to three months) between March 2013 and November 2014. Crabs were collected manually by three people, during the night first hours and for one hour, and a total area of 9 000 m2 per beach. The crabs were measured, weighed, and separated into three groups: juvenile, male and female; while abundance was estimated by the number of collected crabs, and growth parameters were estimated using length frequencies. A total of 1 047 crabs were sampled in the four beaches; a higher crab abundance was found in the preserved beaches, but significant differences were only found between Puerto Angel and Majahual (Tukey, ppopulation dynamics of this species. These results supported the information that the ghost crab is a good indicator of human disturbance, and its population changes were clearly measurable and comparable among protected and impacted beaches; these results are also relevant for the management of sandy beaches in the Mexican Caribbean.

  14. Reconnaissance Report, Local Study Cost Sharing Agreement, Shore Protection And Erosion Control Project; Nantasket Beach Shore Protection Study Hull, Massachusetts

    National Research Council Canada - National Science Library

    1993-01-01

    .... During the Halloween Storm of October 30-31, 1991, the concrete sea walls along the Metropolitan District Commission Nantasket Beach Reservation in Hull, Massachusetts, experienced a substantial...

  15. MODELING OF FLOW THROUGH A VERTICAL PERFORATED PIPE IN THE BEACH, AND THE MORPHODYNAMIC INTERPRETATION: THE PRESSURE EQUALIZATION MODULE SYSTEM

    DEFF Research Database (Denmark)

    Fredsøe, Jørgen

    2009-01-01

    It has been suggested that vertical perforated tubes placed below the beach surface will increase the drainage of the beach, and hence increase the deposition of sand on the beach. The system is called the PEM-system, Pressure Equalization System, and the Danish company SIC (www.shore.dk) is doing...... the marketing. Although it for a coastal engineer seems obvious that such a device can’t drain the beach (nearly no driving forces ), SIC has succeeded in installing the system in more than 75 locations around the world (according to the company). In Denmark a full scale experiment at the exposed west coast has...

  16. Numerical study of wave effects on groundwater flow and solute transport in a laboratory beach.

    Science.gov (United States)

    Geng, Xiaolong; Boufadel, Michel C; Xia, Yuqiang; Li, Hailong; Zhao, Lin; Jackson, Nancy L; Miller, Richard S

    2014-09-01

    A numerical study was undertaken to investigate the effects of waves on groundwater flow and associated inland-released solute transport based on tracer experiments in a laboratory beach. The MARUN model was used to simulate the density-dependent groundwater flow and subsurface solute transport in the saturated and unsaturated regions of the beach subjected to waves. The Computational Fluid Dynamics (CFD) software, Fluent, was used to simulate waves, which were the seaward boundary condition for MARUN. A no-wave case was also simulated for comparison. Simulation results matched the observed water table and concentration at numerous locations. The results revealed that waves generated seawater-groundwater circulations in the swash and surf zones of the beach, which induced a large seawater-groundwater exchange across the beach face. In comparison to the no-wave case, waves significantly increased the residence time and spreading of inland-applied solutes in the beach. Waves also altered solute pathways and shifted the solute discharge zone further seaward. Residence Time Maps (RTM) revealed that the wave-induced residence time of the inland-applied solutes was largest near the solute exit zone to the sea. Sensitivity analyses suggested that the change in the permeability in the beach altered solute transport properties in a nonlinear way. Due to the slow movement of solutes in the unsaturated zone, the mass of the solute in the unsaturated zone, which reached up to 10% of the total mass in some cases, constituted a continuous slow release of solutes to the saturated zone of the beach. This means of control was not addressed in prior studies. Copyright © 2014 Elsevier B.V. All rights reserved.

  17. Microbiological and mycological beach sand quality in a volcanic environment: Madeira archipelago, Portugal

    Energy Technology Data Exchange (ETDEWEB)

    Pereira, Elisabete; Figueira, Celso; Aguiar, Nuno; Vasconcelos, Rita [Universidade da Madeira, Caminho da Penteada, 9020-105 Funchal (Portugal); Vasconcelos, Sílvia [Laboratório Regional de Veterinária e Segurança Alimentar, Caminho das Quebradas de Baixo n° 79, 9000-254 Funchal (Portugal); Calado, Graça [Laboratório de Saúde Pública, IASaúde, Rua das Pretas n° 1, 9004-515 Funchal (Portugal); Brandão, João [Instituto Nacional de Saúde Dr. Ricardo Jorge, Avenida Padre Cruz, 1649-016 Lisboa (Portugal); Prada, Susana, E-mail: susana@uma.pt [Universidade da Madeira, Caminho da Penteada, 9020-105 Funchal (Portugal); Centro de Vulcanologia e Avaliação de Riscos Geológicos, Universidade dos Açores, Rua da Mãe de Deus, Edifício do Complexo Científico, 3° Andar — Ala Sul, 9500-321 Ponta Delgada (Portugal)

    2013-09-01

    Madeira forms a mid-Atlantic volcanic archipelago, whose economy is largely dependent on tourism. There, one can encounter different types of sand beach: natural basaltic, natural calcareous and artificial calcareous. Microbiological and mycological quality of the sand was analyzed in two different years. Bacterial indicators were detected in higher number in 2010 (36.7% of the samples) than in 2011 (9.1%). Mycological indicators were detected in a similar percentage of samples in 2010 (68.3%) and 2011 (75%), even though the total number of colonies detected in 2010 was much higher (827 in 41 samples) than in 2011 (427 in 66 samples). Enterococci and potentially pathogenic and allergenic fungi (particularly Penicillium sp.) were the most common indicators detected in both years. Candida sp. yeast was also commonly detected in the samples. The analysis of the 3rd quartile and maximum numbers of all indicators in samples showed that artificial beaches tend to be more contaminated than the natural ones. However, a significant difference between the variables was lacking. More monitoring data (number of bathers, sea birds, radiation intensity variation, and a greater number of samples) should be collected in order to confirm if these differences are significant. In general, the sand quality in the archipelago's beaches was good. As the sand may be a vector of diseases, an international common set of indicators and values and a compatible methodologies for assessing sand contamination, should be defined, in order to provide the bather's with an indication of beach sand quality, rather than only the water. - Highlights: • Microbial indicators were studied in the beach sands of Madeira archipelago. • Differences between years may be attributed to extreme weather. • Sand of artificial beaches has higher levels of microbial contamination. • Microbial analysis of the sand showed that the beaches have mainly good quality.

  18. Microbiological and mycological beach sand quality in a volcanic environment: Madeira archipelago, Portugal

    International Nuclear Information System (INIS)

    Pereira, Elisabete; Figueira, Celso; Aguiar, Nuno; Vasconcelos, Rita; Vasconcelos, Sílvia; Calado, Graça; Brandão, João; Prada, Susana

    2013-01-01

    Madeira forms a mid-Atlantic volcanic archipelago, whose economy is largely dependent on tourism. There, one can encounter different types of sand beach: natural basaltic, natural calcareous and artificial calcareous. Microbiological and mycological quality of the sand was analyzed in two different years. Bacterial indicators were detected in higher number in 2010 (36.7% of the samples) than in 2011 (9.1%). Mycological indicators were detected in a similar percentage of samples in 2010 (68.3%) and 2011 (75%), even though the total number of colonies detected in 2010 was much higher (827 in 41 samples) than in 2011 (427 in 66 samples). Enterococci and potentially pathogenic and allergenic fungi (particularly Penicillium sp.) were the most common indicators detected in both years. Candida sp. yeast was also commonly detected in the samples. The analysis of the 3rd quartile and maximum numbers of all indicators in samples showed that artificial beaches tend to be more contaminated than the natural ones. However, a significant difference between the variables was lacking. More monitoring data (number of bathers, sea birds, radiation intensity variation, and a greater number of samples) should be collected in order to confirm if these differences are significant. In general, the sand quality in the archipelago's beaches was good. As the sand may be a vector of diseases, an international common set of indicators and values and a compatible methodologies for assessing sand contamination, should be defined, in order to provide the bather's with an indication of beach sand quality, rather than only the water. - Highlights: • Microbial indicators were studied in the beach sands of Madeira archipelago. • Differences between years may be attributed to extreme weather. • Sand of artificial beaches has higher levels of microbial contamination. • Microbial analysis of the sand showed that the beaches have mainly good quality

  19. Beach geomorphic factors for the persistence of subsurface oil from the Exxon Valdez spill in Alaska.

    Science.gov (United States)

    Xia, Yuqiang; Boufadel, Michel C

    2011-12-01

    Oil from the 1989 Exxon Valdez oil spill persists in some of the Prince William Sound (Alaska) beaches and continues to be a potential threat to the fauna. This paper reports a field investigation during the summer of 2008 of groundwater flow and solute transport in a tidal gravel beach in Smith Island, Prince William Sound. The beach contains oil on one side, the left side (facing landward). Field measurements of water table, salinity, and tracer (lithium) concentration were obtained for an approximate duration of 64 h for two transects, the oiled transect and a clean transect (the right transect). It was found that the hydraulic conductivity and the fresh groundwater recharge into the two transects were similar. It was also found that the beach slope of the mid to high tidal zone along the oiled (left) transect was ~7.4% which is considerably smaller than that of the clean (right) transect (~11.8%). This suggests a higher flushing/replenishing of the right transect with nutrients and/or oxygen, which would have enhanced biodegradation of oil on the right transect if that oil was not washed by waves. We also found that the degree of oiling at each location was inversely dependent on the armoring of the beach surface with clasts and boulders. The applied tracer concentration at the left transect was less than 2% of the source or close to the background level at all locations except a seaward well closest to the applied location, indicating that the tracer applied was diluted or washed out from the beach during the application. Thus, in situations where oil biodegradation is limited by the availability of nutrients and/or dissolved oxygen, applying the chemicals on the beach surface would most likely not enhance oil biodegradation as the applied chemicals would be greatly diluted prior to reaching the oil. Thus, deep injection of nutrients and/or dissolved oxygen is probably the only option for enhancing oil biodegradation.

  20. Marine oil pollution and beached bird surveys: the development of a sensitive monitoring instrument

    International Nuclear Information System (INIS)

    Camphuysen, C.J.; Heubeck, M.

    2001-01-01

    One of the most obvious adverse effects of (chronic) pollution of the world's oceans and seas with mineral oil is the mortality of seabirds. Systematic surveys of beachcast corpses of birds ('beached bird surveys') have been used in many parts of the world to document the effect of oil pollution, but particularly so in Western Europe and in parts of North America. In this paper, the history, current schemes, methods and possible (future) use of beached bird surveys are described and discussed, because the value of beached bird surveys has been hotly disputed. Oil pollution is known since the late 19 th century, while the first beached bird surveys were conducted in the 1920s. Due to the amount of man-power needed for these surveys, most beached bird survey programs thrived only through the work of a large number of volunteers. However, most programs have resulted in substantial amounts of high quality data, often covering many consecutive years. One of the main shortcomings of many beached bird survey programs was the emphasis on stranded bird numbers rather than on relative measures, such as oil rates (percentage of corpses oiled of all corpses found). Sources of pollution, particularly so in chronically polluted regions such as the North Sea, the Baltic, the Mediterranean and the waters around Newfoundland, are insufficiently known, but could be studied through a sampling program connected to beached bird surveys. Suggestions for standardization of methods are presented, which could lead to a global and highly sensitive monitoring instrument of marine oil pollution. (Author)