This data set contains a surface depicting the elevations paleochannel unconformities 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 paleochannel unconformities were interpreted and digitized to calculate their depth beneath the seafloor. Interpreted horizons were exported at every 50th shot as xyz points, and imported to ArcGIS for interpolation into a 100-m raster grid.
Are there legal restrictions on access or use of the data?
Use_Constraints:These data are NOT to be used for navigation purposes. Mariners should refer to the appropriate nautical chart. Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey (USGS) as the source of this information.
Although all data have been used by the USGS, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and/or related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
|Data format:||zip archive containing ESRI ArcRaster grid, metadata and browse graphic in format AIG (version ArcGIS9.0) ESRI Raster GRID format Size: 0.2|
|Media you can order:||DVD-ROM (Density 4.75 Gbytes) (format UDF)|
These data are available in Environmental Systems Research Institute (ESRI) GRID format. The user must have software capable of importing and processing the data file.