Marine Geology & Geophysics

Scientific stewardship, products, and services for
sea floor and lakebed data, including trackline geophysical measurements
and descriptions and analyses of marine sediment and rock.

Marine Geophysics

All geophysics	magnetics
search for data	sediment thickness
custom grids	seismic reflection
gravity	trackline geophysics

Marine Geology

All geology	Index to Geological Samples
search for data	marine minerals data
file list (partial)	ocean drilling data
crustal ages	well logs

Ocean Depths (Bathymetry)

All bathymetry	hydrographic surveys
coastal gridded	IHO DCDB
coastlines	international ocean mapping
custom grids	multibeam bathymetry
fishing maps	satellite-derived
global gridded	trackline
Great Lakes	tsunami inundation

NGDC and the collocated World Data Center for Geophysics and Marine Geology, Boulder, compile, maintain, archive, and distribute data from extensive databases in coastal and open ocean areas. Key data types include trackline geophysics (gravity, magnetics, seismic reflection, bathymetry), sediment thickness, data from ocean drilling and sea floor and lakebed sediment and rock samples, and digital coastlines. NGDC is the designated National long-term archive for marine geological and geophysical data collected with US public funds. Learn more about marine geology & geophysics data management at NGDC

more about NGDC's MGG Division

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Frequently Asked Questions

Educational Resources

Age of the Oceans

Sediment Thickness of the Oceans

Images & Animations

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DVD-ROMs & CD-ROMs

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Website of the US Dept of Commerce/NOAA/NESDIS/NGDC, last update April 21, 2008