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Abstract: We used a numerical model to investigate how a barrier island groundwater system responds to increases of up to 60 cm in sea level. We found that a sea-level rise of 20 cm leads to substantial changes in the depth of the water table and the extent and depth of saltwater intrusion, which are key determinants in the establishment, distribution and succession of vegetation assemblages and habitat suitability in barrier islands ecosystems. In our simulations, increases in water-table height in areas with a shallow depth to water (or thin vadose zone) resulted in extensive groundwater inundation of land surface and a thinning of the underlying freshwater lens. We demonstrated the interdependence of the groundwater...
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This data set contains information on the probabilities of hurricane-induced erosion (collision, inundation and overwash) for each 1-km section of the United States coast for category 1-5 hurricanes. The analysis is based on a storm-impact scaling model that uses observations of beach morphology combined with sophisticated hydrodynamic models to predict how the coast will respond to the direct landfall of category 1-5 hurricanes. Hurricane-induced water levels, due to both surge and waves, are compared to beach and dune elevations to determine the probabilities of three types of coastal change: collision (dune erosion), overwash, and inundation. Data on dune morphology (dune crest and toe elevation) and hydrodynamics...
Categories: Data;
Types: ArcGIS REST Map Service,
ArcGIS Service Definition,
Downloadable,
Map Service;
Tags: Alabama,
Atlantic Ocean,
CMGP,
Coastal and Marine Geology Program,
Delaware, All tags...
Florida,
Georgia,
Gulf of Mexico,
Gulf of Mexico,
Louisiana,
Maryland,
Mississippi,
New Jersey,
New York,
North Carolina,
OFR 2012-1084,
OFR 2013-1130,
OFR 2013-1131,
Open-File Report 2012-1084,
Open-File Report 2013-1130,
Open-File Report 2013-1131,
SPCMSC,
South Carolina,
Southeast,
St. Petersburg Coastal and Marine Science Center,
Texas,
U.S. Geological Survey,
U.S. Gulf Coast,
U.S. Mid-Atlantic,
USGS,
United States,
Virginia,
coastal,
coastal hazard,
elevation,
environment,
hurricane impact,
nourishment,
sediments,
shoreline,
shoreline change, Fewer tags
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