Interpretation of the thickness of Pleistocene deposits on the inner-continental shelf within the New York Bight, derived from seismic data collected by the U.S. Geological Survey, 1995 - 1999 (Grid, UTM Zone 18N, WGS84 and Esri polyline shapefile, Geographic, WGS84)

The difference between the Quaternary and Holocene Isopachs was used to generate the Pleistocene Isopach within Dynamic Graphics Inc., EarthVision surface modelling software. The resultant grid has a grid cell size of 100, yeilding a grid size of 1007 rows and 1854 columns. The grid was exported as an ASCII raster format file.

The exported ASCII Pleistocene thickness grid file from EarthVision was edited to create an ASCII grid file suitable for import to ArcView software. The order of rows were flipped, so that the file begins with the lower row, left column and ends with the upper row right column. An ArcView header that descibes the lower left origin of the grid, the grid cell size, the number of rows and columns, and the null value used (-9999).

The edited ASCII grid file was imported into ArcView software with the 3D Spatial Analyst extension. The file was saved as a Spatial Analyst (ArcInfo raster grid format) grid.

Contour data were generated from the Pleistocene Isopach Gridded data at a 5 meter contour interval within EarthVision. These data were exported and converted to an ESRI generate format. The contour interval associated with each contour was saved as an ASCII file and read into ArcView in table format. The generate file was converted to a vector shapefile. The table and attritube table of the contour shapefile were joined based on unique contour IDs. The attribute table was then editted to include the associated contour value with each contour line, and the join was removed. These contour data are stored in the Geographic Coordinate System (decimal degrees, WGSir Ellipsoid).

The grid and contour data were clipped, using GRIDCLIP script within ArcView 3.2, to the extents of the 1995 and 1996 survey areas.

Edits to the metadata were made to fix any errors that MP v 2.9.36 flagged. This is necessary to enable the metadata to be successfully harvested for various data catalogs. In some cases, this meant adding text "Information unavailable" or "Information unavailable from original metadata" for those required fields that were left blank. Other minor edits were probably performed (title, publisher, publication place, etc.). Completely changed the title based on an author (Jane Denny) supplied title. Added online links to the publication and data page in the Identification section. Added the standard order section to the Distribution Information, which included providing a link to download the data. The metadata describes both the grid and the contours, but the contours are the only dataset available for download in a zip file from the publication. Downloading the grid would require downloading individual files within folders. The metadata date (but not the metadata creator) was edited to reflect the date of these changes. The metadata available from a harvester may supersede metadata bundled within a download file. Compare the metadata dates to determine which metadata file is most recent.

Added keywords section with USGS persistent identifier as theme keyword.