Gridded bathymetry data

GEBCO’s gridded bathymetric data sets are global terrain models for ocean and land and include the

The GEBCO_2014 Grid is available to download for user-defined areas in netCDF, Esri ASCII raster or INT16 GeoTiff formats. The GEBCO One Minute Grid is available in netCDF only.

In netCDF format the grids are available as either two-dimensional (2D) or one-dimensional (1D) array grid files. You can download data for a user-defined area or the complete global grid. The 1D array grids are for use with GEBCO's Grid Display Software and GEBCO Digital Atlas (GDA) and so are only available as a global grid.

Select your data set

From the table and map below, select your grid and the area of interest. Add your selection to the basket and repeat the process as required. Once you are happy with your selection(s) view the basket and checkout your request to start file preparation. You will be directed to the British Oceanographic Data Centre's (BODC) web site for the data download procedure. You can return to GEBCO's web site once this procedure is complete.

Use the '+' button in the top right-hand corner of the map to select to display the GEBCO Source Identifier (SID) Grid. It shows those grid cells for which the data in the GEBCO Grid are based on bathymetric sounding or grid values. It is best viewed at a zoomed in level to appreciate the detail in the data set.

Source Available data options Available formats Select
GEBCO_2014 Grid (30 arc-second interval). Click to toggle detailed explanation of this data option User-defined area* or global grid 2D netCDF
The GEBCO_2014 Grid is a continuous terrain model for ocean and land with a spatial resolution of 30 arc-seconds. It was generated by combining quality-controlled ship depth soundings with interpolation between sounding points guided by satellite-derived gravity data. Where they improve on the existing grid, data sets developed by other methods are included. Further information can be found in the data set documentation. The complete global grid file in compressed form is 1.1 Gbytes.
Global grid 1D netCDF
User-defined area* INT16 GeoTIFF (data)
User-defined area* ESRI ASCII
GEBCO_2014 Source Identifier (SID) Grid (30 arc-second interval). Click to toggle detailed explanation of this data option User-defined area* or global grid 2D netCDF
The GEBCO_2014 Source Identifier (SID) grid accompanies the GEBCO_2014 bathymetric grid. This data set identifies which grid cells in the GEBCO_2014 grid are based on bathymetric soundings or bathymetric depth values from grids, and which cells contain predicted depth values. The SID grid is a global grid file at 30 arc-second intervals. Further information can be found in the data set documentation. The complete global grid file in compressed form is 32 Mbytes.
Global grid 1D netCDF
User-defined area* INT16 GeoTIFF (data)
User-defined area* ESRI ASCII
GEBCO One Minute Grid (1 arc-minute interval). Click to toggle detailed explanation of this data option User-defined area* or global grid 2D netCDF
The GEBCO One Minute Grid is a continuous terrain model for ocean and land with a spatial resolution of one arc-minute.The grid is largely based on the bathymetric contours contained in the GEBCO Digital Atlas. Further information can be found in the data set documentation. The complete global grid file in compressed form is 270 Mbytes.
Global grid 1D netCDF
*maximum area allowed is 10800 grid cells by 10800 grid cells, this is equal to an area of 90 degrees by 90 degrees

To navigate the map please use the standard mouse options:

Click+drag : allows you to pan

Click+mousewheel : movement allows zoom in or zoom out.

To specify your coordinates via the map

Use Shift+click and drag a box to define your area of interest.

Alternatively for PCs or Macs, type the coordinates of the required area in the form. Once you are happy with your selection use the update button to submit your search criteria.

You may revisit this section and amend your criteria at any time.

Northernmost
latitude
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Westernmost
longitude
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Easternmost
longitude
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Southernmost
latitude
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Depending on the size of your area selection, or during busy periods, data preparation may take a while. Our file generator service will email you when the data are ready for collection.

Dataset errata

Although every care is taken during the development of the GEBCO bathymetric grids, errors are occasionally reported. Reported issues can be viewed on the errata pages hosted at BODC.

Note on vertical datum and GEBCO's grids

GEBCO's global elevation models are generated by the assimilation of heterogeneous data types assuming all of them to be referred to mean sea level. However, in some shallow water areas, the grids include data from sources having a vertical datum other than mean sea level. We are working to understand how best to fully assimilate these data.

Fine out more


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