GEBCO's aim is to provide the most authoritative publicly-available bathymetry of the world's oceans. It operates under the joint auspices of the Intergovernmental Oceanographic Commission (IOC) (of UNESCO) and the International Hydrographic Organization (IHO).
We are a non-profit making organisation which relies largely on the voluntary contributions of an enthusiastic international team of geoscientists and hydrographers. GEBCO's work is directed by a Guiding Committee and supported by sub-committees on ocean mapping and undersea feature names plus ad hoc working groups.
GEBCO has its origins at the beginning of the 20th century. Find out more about GEBCO's history from the initiation of the chart series in 1903 to the present day.
Outputs from our work
We produce a range of bathymetric data sets and products. This includes global gridded bathymetric data sets a global set of digital bathymetric contours; the GEBCO Gazetteer of Undersea Feature Names; the GEBCO Digital Atlas; the GEBCO world map and the IHO-IOC GEBCO Cook Book— a reference manual on how to build bathymetric grids.
In order to build the next generation of improved GEBCO global bathymetric compilations, regional expertise is needed and this can only be achieved by fully taking advantage of regional seafloor mapping and data collection activities. Through the Sub-Committee on Regional Undersea Mapping (SCRUM), GEBCO is aiming to build on and extend its collaboration with regional mapping groups in order to improve its global bathymetric model.
Find out more about regional mapping projects and GEBCO's collaborations.
GEBCO is continually working to improve its gridded data sets with the aim of providing the most authoritative publicly-available bathymetric grids for the world’s oceans.
We are grateful for contributions of single-beam and/or multibeam survey data, individual soundings or existing grids to help update our gridded data sets and products. We acknowledge the source of contributed data in the documentation which accompanies GEBCO's data sets.
Find out how to contribute data to help update GEBCO's grids.
As an outcome of the Extraordinary International Hydrographic Conference 5, the IHO Inter-Regional Coordinating Committee has established a Crowd-Sourced Bathymetry Working Group (CSBWG).
The working group will examine how best to incorporate, manage and use bathymetric data collected by other than conventional means and develop principles and guidelines to enable the appropriate collection and use of crowd-sourced bathymetry for the benefit of all stakeholders interested in knowing the shape and nature of the seafloor and its depths.
Training a new generation of scientists
The Nippon Foundation of Japan has provided funding for GEBCO to train a new generation of scientists and hydrographers in ocean bathymetry. The 12-month course, leading to a Postgraduate Certificate in Ocean Bathymetry (PCOB), has been held at the University of New Hampshire, USA since 2004.
Access a YouTube video clip giving perspectives of the impact of the programme from GEBCO colleagues and scholars.
Find out more
To find out more about our work and to get involved in GEBCO please contact us.