Thursday, 17 December 2009

New GEBCO bathymetric grids released

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.

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

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).