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About MGG
Contact MGG
Marine Geophysics
Marine Geology
Bathymetry & Relief
Offline Products
US ECS Project
NGDC is data management lead for the US effort to explore potential extended continental shelf areas.

What's New in MGG?new

Frequently Asked Questions

Educational Resources


Marine Geology & Geophysics

The National Geophysical Data Center provides scientific stewardship, products and services for sea floor and lakebed data, including geophysics (gravity, magnetics, seismic reflection, bathymetry), and data derived from sediment and rock samples.

Marine Geophysics

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All geophysics magnetics
data access sediment thickness
gravity seismic reflection

Marine Geology

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All geology geologic samples (IMLGS)
data access NOS seabed descriptions
crustal ages ocean drilling data

Ocean Depths (Bathymetry) & Relief

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All bathymetry hydrographic surveys
coastal grids IHODCDB
create custom grid international ocean mapping
DEM portal multibeam bathymetry
ETOPO1, global grids paleobathymetry
fishing maps shorelines
Great Lakes tsunami inundation

NGDC compiles coastal and global digital elevation models, high-resolution models for tsunami inundation studies, provides stewardship for NOS data supporting charts and navigation, and is the US national long-term archive for MGG data.
Learn more about mgg activities or the MGG Division.

Screenshot of NGDC Geophysical Survey Data Viewer
Geophysical Survey Data Viewer

Screenshot of Index to Marine and Lacustrine Geological Samples Viewer
Geologic Sample Data Viewer

Screenshot of NGDC Bathymetry Viewer
Bathymetry Data Viewer
Related Data at NGDC:
Geomagnetism
Natural Hazards
Tsunami/Tides

Related External Sites