U.S. Geological Survey calculated percentage of time sediment is mobile for May 2010 to May 2011 at select points in the South Atlantic Bight (SAB_mobile_perc, point shapefile, Geographic, WGS84)

The U.S. Geological Survey has been characterizing the regional variation in shear stress on the sea floor and sediment mobility through statistical descriptors. The purpose of this project is to identify patterns in stress in order to inform habitat delineation or decisions for anthropogenic use of the continental shelf. The statistical characterization spans the continental shelf from the coast to approximately 120 m water depth, at approximately 5 km resolution. Time-series of wave and circulation are created using numerical models, and near-bottom output of steady and oscillatory velocities and an estimate of bottom roughness are used to calculate a time-series of bottom shear stress at 1-hour intervals. Statistical descriptions such as the median and 95th percentile, which are the output included with this database, are then calculated to create a two-dimensional picture of the regional patterns in shear stress. In addition, time-series of stress are compared to critical stress values at select points calculated from observed surface sediment texture data to determine estimates of sea floor mobility.

Data and Resources

Additional Info

Field Value
Maintainer P. Soupy Dalyander
Last Updated March 21, 2023, 08:10 (CDT)
Created March 21, 2023, 08:10 (CDT)
Identifier USGS:c55d8155-3082-4d4c-a471-8b256702af68
Modified 20211119
Theme {geospatial}
accessLevel public
bureauCode {010:12}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
metadata_type geospatial
old-spatial -81.816673, 24.408331, -74.501671, 38.834999
publisher U.S. Geological Survey
publisher_hierarchy Department of the Interior > U.S. Geological Survey
resource-type Dataset
source_datajson_identifier true
source_hash 40ef429aad962a85555b65f0552cc31f522ed082
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-81.816673, 24.408331], [-81.816673, 38.834999], [ -74.501671, 38.834999], [ -74.501671, 24.408331], [-81.816673, 24.408331]]]}