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Showing 1 to 20 of 71 for “"barrier island"”.
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Barrier island groundwater dynamics
Nearly 1.5 million people inhabit barrier islands along the U.S. Atlantic and Gulf Coasts and coastal groundwater dynamics influence the availability of freshwater, ecosystem health, pollutant transport, and flooding in these densely populated communities. However, groundwater dynamics, including …
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Barrier Island Groundwater Dynamics
Nearly 1.5 million people inhabit barrier islands along the U.S. Atlantic and Gulf Coasts and coastal groundwater dynamics influence the availability of freshwater, ecosystem health, pollutant transport, and flooding in these densely populated communities. However, groundwater dynamics, including …
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The Environmental Discrimination of Barrier Island Sediments, by the S.E.M
… discrimination was undertaken on five Barrier Island samples, representing overwash, inlet, flood tidal delta, aeolian and beach environments. S.E.M. textural analysis, utilizing a checklist of thirty-six common surface features, coupled with photographic evidence was used to analyse …
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Morphological Change of a Developed Barrier Island due to Hurricane Forcing
… Among the most vulnerable coastlines are barrier islands, which often act as the first line of defense against storms for the mainland coast. In this dissertation, the physical damage to a developed barrier island (Bay Head, NJ, USA) caused by erosion during Hurricane Sandy (2012) is …
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Subsurface controls on mainland marsh shoreline response during barrier island transgressive submergence
… have sought to understand the response of barrier islands and their attendant marshes to sea level rise. The Mississippi River delta plain, specifically the Chandeleur Islands and associated interior wetlands in eastern Louisiana, serves as an excellent natural laboratory for studying these …
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Complex retreat behavior in experimental barrier island response to base level rise
Barrier islands act as natural barriers between the ocean and the mainland. These islands create protected, low energy environments behind them that are important ecological and economic hubs. Barrier islands are naturally low-laying features and are susceptible to drowning from sea level rise. …
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Stratigraphy and Depositional Environments of a Late Pleistocene Barrier Island Complex, Southeastern Virginia
<p>The Norfolk, Kempsville, and Sand Bridge Formations beneath the HIckory Scarp of southeastern Virginia are reinterpreted as representing one glacio-eustatic transgressive cycle. The timing of this transgressive event is set during the earliest Wisconsinan. The formations were previously …
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Barrier Island Morphodynamic Insights from Applied Global Sensitivity Analysis and Decadal Exploratory Modeling
Barrier islands serve as valuable resources for coastal communities by reducing backbarrier flooding, providing wildlife habitat, and creating local economic activity through opportunities for recreation and tourism. Because the benefits of these islands are linked to their morphology, coastal …
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Holocene Geology and Migration of a Low-Profile Barrier Island System, Metompkin Island, Virginia
… of historical shoreline position, cross-island profile change, and stratigraphic data provided a shoreline response model for low-profile barrier island systems. Historical shoreline data illustrates continuous, shore-parallel retreat between 1852 and 1957, at which time the island …
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Groundwater Thresholds for Root Decomposition and the Relation to Barrier Island Ecological State Changes
<p>Barrier islands off the eastern shore of Virginia exhibit distinct habitats that abruptly transition between periodically brackish/freshwater marshes, wooded swales, and sparsely vegetated dunes. There is strong evidence that the plant communities and ecosystem processes occurring in each …
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Field Observations and Numerical Simulations of Groundwater Dynamics Within Cabretta Island, A Georgia Barrier Island
… storms on groundwater properties within Cabretta Island, a barrier island in Georgia. Field and numerical results showed that tidal exchange is the predominant driving force for groundwater flow in the marsh and beach, reaching velocities greater than 10 cm/d and 30 cm/d respectively. Topography …
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Ecophysiology of Barrier Island Beach Plants: Responses in Form and Function to Daily, Seasonal and Episodic Stresses
Barrier islands (BIs) are transient, highly dynamic geological structures of fairly recent origin found along most continental shorelines. In particular, eighty-five percent of the East and Gulf Coasts of the United States are fronted by BIs. Within this environment, the BI beach is considered …
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Modeling the Effects of Low-Pressure Atmospheric Fronts on Sediment Transport through Mississippi Sound Barrier Island Inlets
… hurricanes are well recognized for reshaping barrier islands and altering sediment budgets, the cumulative role of recurrent fronts remains poorly quantified. This thesis investigates the impacts of six low-pressure atmospheric fronts (2015–2017) on sediment flux through six barrier island …
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Configuration of the Pleistocene Surface Beneath Cat Island, Mississippi and Implications for Barrier Island Formation and Evolution
The mechanism of Holocene barrier formation aids in determining island geomorphologic responses to modifying climatic processes of the surrounding environment. The geometry and composition of local antecedent topography plays a role in barrier formation by providing an elevated base, nucleus for …
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The Role of Nitrogen Availability, Hydroperiod and Litter Quality in Root Decomposition Along a Barrier Island Chronosequence
… conducted along a southeastern Atlantic Coast barrier island dune and swale chronosequence (Virginia Coast Reserve Long Term Ecological Research site), addressed how hydroperiod, litter quality and nitrogen availability influenced below ground root decay in response to gradients associated with …
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Building resiliency or holding off the inevitable? climate adaptation on a dense barrier island in New York
… analysis of climate adaptation planning on the barrier island of Long Beach, NY five years after Hurricane Sandy left the island devastated. Relying on theories of ecological resiliency that call to mind a 'safe-to-fail' approach rather than engineering resiliency's 'fail-safe' mentality, I look …
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Morphological and Physiological Leaf Adaptations to Seasonal and Diurnal Abiotic Stress for Two Barrier Island Sand Dune Species
The coastal barrier island ecosystem provides protection to the coastline from storm and wave energy associated with extreme episodic storm events, such as hurricanes, tropical storms, and nor'easters. In addition, barrier islands produce, protect, and maintain inlets, bays, estuaries, wetlands, …
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Changes in Avian Capture Rate and Migration Phenology Across 37 Years at a Coastal Barrier Island in Georgia
… fall bird banding data collected at the Jekyll Island Banding Station in Georgia. Capture rates of Neotropical migrants on Jekyll have declined 50-90% in many common species, and the mean ordinal passage date of Gray Catbird and Western Palm Warbler have shifted 8 days later. Landcover analysis …
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Estuarine Dynamics as a Function of Barrier Island Transgression and Wetland Loss: Understanding the Transport and Exchange Processes
… (SLR) on estuarine dynamics in a transgressive barrier island setting. The field methods and numerical modeling in this study show that as barrier islands are converted to inner shoals, tidal exchange increases between the estuary and coastal ocean. If marshes are unable to accrete at a pace …
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Plant Assemblage Structure on Barrier Island ‘Pimple’ Dunes at the Virginia Coast Reserve Long-Term Ecological Research Site
… were the focus of the current study are the Hog Island and Parramore Island 'pimples', small, rounded dunes forming along main dune ridges of the barrier islands. There are distinct plant assemblage zones found on pimples, although most of these dunes are 10–20 m in diameter. Hypotheses of the …
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