Bathymetry (GEBCO)

Bathymetry (GEBCO) | NASA

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About this dataset

Beneath the waters of the world's ocean, the Earth's surface isn't flat like the bottom of a glass or large bowl. There are giant mountain ranges and huge cracks where the ocean floor is ripping apart. Underwater volcanoes are slowly building up into mountains that may one day rise above the sea surface as islands. Because of these features, the depth of the water isn't the same everywhere in the ocean. Bathymetry is the measurement of how deep the water is at various places and the shape of the land underwater. In these maps, different shades of color represent different water depths. The data come from the General Bathymetric Chart of the Oceans, produced by the International Hydrographic Organization (IHO) and the United Nations' (UNESCO) Intergovernmental Oceanographic Commission (IOC).

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File Type:
1.0 degrees 360 x 180 download
0.5 degrees 720 x 360 download
0.25 degrees 1440 x 720 download
0.1 degrees 3600 x 1800 download
CSV for Excel older than 2007 download

Get Data

1. Visit GEBCO Data Products

2. Download global gridded in data in netCDF or GeoTIFF

Related Websites

General Bathymetric Chart of the Oceans (GEBCO)

Further Reading

7.0 Quake near Christchurch, New Zealand

Earthquake and Tsunami Near Sendai Japan

Persistent Phytoplankton


Imagery produced by the NASA Earth Observations team using GEBCO Bathymetric Grid courtesy NOAA.

Federal Geographic Data Committee Geospatial Metadata

View the FGDC Metatdata for Bathymetry (GEBCO)

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