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Federal
Marine Trackline Geophysical Database NGDA recent views
National Oceanic and Atmospheric Administration, Department of Commerce —
This data set contains bathymetry, magnetic, gravity and seismic shot point navigation data collected during marine cruises from 1939 to the present. Coverage is... -
Federal
Marine Trackline Geophysical Database for Sub-Bottom Seismic Data NGDA recent views
National Oceanic and Atmospheric Administration, Department of Commerce —
Marine Trackline Geophysical data represented by sub-bottom seismic data, which we sometimes also call chirp (based on its operating mode), uses a 3.5 kHz operating... -
Federal
Marine Trackline Geophysical Database for M77 Data NGDA recent views
National Oceanic and Atmospheric Administration, Department of Commerce —
Marine Trackline Geophysical data represented by the M77 tag are inclusive of singlebeam bathymetry, marine magnetic, and gravity data and were collected during... -
Federal
Gravity for the Redefinition of the American Vertical Datum (GRAV-D) Data Products NGDA recent views
National Oceanic and Atmospheric Administration, Department of Commerce —
Within the NOAA National Ocean Service (NOS), the NOAA National Geodetic Survey (NGS) has a federal mandate to provide accurate positioning, including heights, to all...