• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2023-09-15T00:00:00.000+00:00

This data set contains bathymetry, magnetic, gravity and seismic shot point navigation data collected during marine cruises from 1939 to the present. Coverage is worldwide. These data are stored...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2023-09-15T00:00:00.000+00:00

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 frequency. Research vessels use...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 1976-01-01T00:00:00.000+00:00

NCEI maintains a large volume of both analog and digital seismic reflection data. Currently only a limited number of lines are available online. Digital data include SEGY files and scanned images...

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