Dataset Identification:
Resource Abstract:
- description: In 1999, the U.S. Geological Survey (USGS), in partnership with the South Carolina Sea Grant Consortium, began
a study to investigate processes affecting shoreline change along the northern coast of South Carolina, focusing on the Grand
Strand region. Previous work along the U.S. Atlantic coast shows that the structure and composition of older geologic strata
located seaward of the coast heavily influences the coastal behavior of areas with limited sediment supply, such as the Grand
Strand. By defining this geologic framework and identifying the transport pathways and sinks of sediment, geoscientists are
developing conceptual models of the present-day physical processes shaping the South Carolina coast. The primary objectives
of this research effort are: 1) to provide a regional synthesis of the shallow geologic framework underlying the coastal upland,
shoreface and inner continental shelf, and define its role in coastal evolution and modern beach behavior; 2) to identify
and model the physical processes affecting coastal ocean circulation and sediment transport, and to define their role in shaping
the modern shoreline; and 3) to identify sediment sources and transport pathways; leading to construction of a regional sediment
budget. This data set contains a surface depicting the elevation of the regional transgressive unconformity underlying the
inner shelf of Long Bay, offshore of the South Carolina Grand Strand. Chirp seismic data collected with Benthos SIS-1000 and
Edgetech SB-512 acquisition systems were processed using SIOSEIS (Scripps Institute of Oceanography) and Seismic Unix (Colorado
School of Mines) to produce segy files and jpg images of the profiles. Data were then imported into Landmark SeisWorks, a
digital seismic interpretation package, where the sea floor and underlying transgressive surface were interpreted and digitized.
The isopach between these horizons was exported at every 50th shot as xyz points, and imported to ArcGIS for interpolation
into a 10-m raster grid. The isopach grid was then subtracted from a seafloor bathymetry grid (bathy_grd) to approximate the
proper elevation of the transgressive unconformity beneath the sea floor.; abstract: In 1999, the U.S. Geological Survey (USGS),
in partnership with the South Carolina Sea Grant Consortium, began a study to investigate processes affecting shoreline change
along the northern coast of South Carolina, focusing on the Grand Strand region. Previous work along the U.S. Atlantic coast
shows that the structure and composition of older geologic strata located seaward of the coast heavily influences the coastal
behavior of areas with limited sediment supply, such as the Grand Strand. By defining this geologic framework and identifying
the transport pathways and sinks of sediment, geoscientists are developing conceptual models of the present-day physical processes
shaping the South Carolina coast. The primary objectives of this research effort are: 1) to provide a regional synthesis of
the shallow geologic framework underlying the coastal upland, shoreface and inner continental shelf, and define its role in
coastal evolution and modern beach behavior; 2) to identify and model the physical processes affecting coastal ocean circulation
and sediment transport, and to define their role in shaping the modern shoreline; and 3) to identify sediment sources and
transport pathways; leading to construction of a regional sediment budget. This data set contains a surface depicting the
elevation of the regional transgressive unconformity underlying the inner shelf of Long Bay, offshore of the South Carolina
Grand Strand. Chirp seismic data collected with Benthos SIS-1000 and Edgetech SB-512 acquisition systems were processed using
SIOSEIS (Scripps Institute of Oceanography) and Seismic Unix (Colorado School of Mines) to produce segy files and jpg images
of the profiles. Data were then imported into Landmark SeisWorks, a digital seismic interpretation package, where the sea
floor and underlying transgressive surface were interpreted and digitized. The isopach between these horizons was exported
at every 50th shot as xyz points, and imported to ArcGIS for interpolation into a 10-m raster grid. The isopach grid was then
subtracted from a seafloor bathymetry grid (bathy_grd) to approximate the proper elevation of the transgressive unconformity
beneath the sea floor.
Citation
- Title Elevation of the regional transgressive unconformity underlying the inner shelf of Long Bay (Grid; transgr_grd).
-
- creation Date
2018-05-21T09:45:33.259413
Resource language:
Processing environment:
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Metadata data stamp:
2018-08-06T22:39:17Z
Resource Maintenance Information
- maintenance or update frequency:
- notes: This metadata record was generated by an xslt transformation from a dc metadata record; Transform by Stephen M. Richard, based
on a transform by Damian Ulbricht. Run on 2018-08-06T22:39:17Z
Metadata contact
-
pointOfContact
- organisation Name
CINERGI Metadata catalog
-
- Contact information
-
-
- Address
-
- electronic Mail Address cinergi@sdsc.edu
Metadata language
eng
Metadata character set encoding:
utf8
Metadata standard for this record:
ISO 19139 Geographic Information - Metadata - Implementation Specification
standard version:
2007
Metadata record identifier:
urn:dciso:metadataabout:bf78ad60-ee5d-4568-8852-679554f56e1d
Metadata record format is ISO19139 XML (MD_Metadata)