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| | National Geophysical Data Center (NGDC) Digital Marine Sediment Grain Size Database |
 | | Data are from OCSEAP studies, academic institutions, environmental baseline studies conducted under contract to the Bureau of Land Management under the Outer Continental Shelf (OCS) Program, and from laboratory reports generated by the U.S. Naval Oceanographic Office. |
 | | Data include collecting institution, ship, cruise, sample id, latitude/longitude, date of collection, water depth, sampling device, method of analysis, sample weight, sampled interval, raw weight percentages of sediment, within a given phi range. |
 | | The NGDC digital grain size file contains particle size data for over 14,000 seafloor samples worldwide. |
| gcmd.gsfc.nasa.gov /records/GCMD_FE00127.html |
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