About

GEBCO bathymetric grids — new releases

The GEBCO_08 Grid overlain by the 'Source Identifier' Grid
The GEBCO_08 Grid overlain by the 'Source Identifier' Grid. ©

16 December 2009

The General Bathymetric Chart of the Ocean (GEBCO) community aims to provide the most authoritative, publicly-available bathymetry for the world's oceans. BODC maintain and distribute gridded bathymetric data sets on behalf of the GEBCO community. These are

  • The GEBCO One Minute Grid — a global one arc-minute grid, largely based on the most recent set of bathymetric contours contained within the GEBCO Digital Atlas. Released in 2003 and updated in 2008.
  • The GEBCO_08 Grid — a 30 arc-second interval global terrain model, largely generated by combining quality-controlled ship depth soundings with predicted depths between the sounding points guided by satellite-derived gravity data. Released in January 2009.

You may opt to download data for a user-defined area or the complete global file(s).

Announcing new releases

  • A new release of the GEBCO_08 Grid is now available to download — it includes version 2.23 of the International Bathymetric Chart of the Arctic Ocean (IBCAO).
  • A 'Source Identifier' Grid to accompany the GEBCO_08 Grid is also available. This describes the GEBCO_08 Grid — identifying which grid cells are based on bathymetric soundings or grids and which contain predicted depth values.

GEBCO Software

Free grid display software to allow you to view and access data is also available to download under license. It can be used with the global gridded data files but it will not work with user-defined subsets.