June 2011 |
Database updated to include new analyses performed between December 2004 and January 2011 (McMullen and others, 2011) and to make minor revisions; ver. 2.1.
The changes that were made in version 2.1 were as follows:
1. Data collected from December 2004 through January 2011 were appended to the previously published ‘ecstdb2005.xls’ spreadsheet.
2. This file was updated to correct about 100 records for errors in latitudes, longitudes, and other information.
3. Because Esri ArcMap fills all blank numeric fields with ‘0’, blank numeric fields in the Excel file were filled with ‘No Data Values’ of -9999.
4. The East-Coast Sediment Texture Database was renamed ‘ecstdb2011’ and rereleased in shapefile, Excel, and text (.txt) formats. |
February 2012 |
Database updated to make minor revisions; ver.2.2.
The changes that were made in version 2.2 were as follows:
1. The ‘ecstdb2011.xls’ file was updated to correct a few samples for errors in latitudes and longitudes, and rereleased in shapefile, Excel, and text (.txt) formats. |
November 2014 |
Database updated to include new analyses performed between January 2011 and March 2014 (McMullen and others, 2014; Poppe and others, 2014) and to make revisions; ver.3.0.
The changes that were made in version 3.0 were as follows:
1. Data collected from February 2011 through March 2014 were appended to the previously published ‘ecstdb2011.xls’ spreadsheet.
2. This file was updated to correct about 500 records for errors in latitudes, longitudes, and depths, and where cumulative percentages did not add up to 100 percent. Although no samples were off by more than 2 percent, the phi distributions for these samples were renormalized and reprocessed. No post-1980 records are now off by more than 0.2 percent.
3. Numerous No Data Values of -9999 in the phi percentages and gravel/sand/silt/clay percentages were replaced with 0s. No data values were replaced with 0s where it looked like a portion of either the fine or coarse fraction of the sample was analyzed and the original blanks should have been 0s. However, for instance, in some cases it looked like only the coarse fraction was analyzed and any sediment in the fine fraction was recorded as 5 phi, the finer phi sizes remained as no data values in this case. No Data Values were not changed to 0 in records for samples that were not analyzed at the Woods Hole Coastal and Marine Science Center Sediment Lab, or in samples analyzed prior to 1980.
4. The East-Coast Sediment Texture Database was renamed ‘ecstdb2014’ and rereleased in shapefile, Excel, and Comma Separated Values (.csv) formats. |
U.S. Department of the Interior |
U.S. Geological Survey