NOAA/NESDIS/National Geophysics Data Center (NGDC)
This National Oceanic and Atmospheric Administration website provides bathymetry, topography and relief data; digital coastlines; an interactive coastline extractor; ocean mapping; the geomorphology and bathymetry of the Great Lakes; geological data of the seafloor, and total sediment thickness; and geophysical data, including trackline measurements of gravity, and magnetics from global ocean areas.
This description of a site outside SERC has not been vetted by SERC staff and may be incomplete or incorrect. If you
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