GEBCO One Minute Grid - ESRI Grid

General Bathymetric Chart of the Oceans - GEBCO One Minute Grid

Released: 2003, updated: 2008.

The GEBCO One Minute Grid is an ArcInfo Grid version (one arc-minute resolution) of the original data source gridone.grd NetCDF file which is part of the GEBCO Digital Atlas (GDA) Centenary Edition.

The GEBCO One Minute Grid is largely based on the most recent set of bathymetric contours contained within the GEBCO Digital Atlas. Additional control contours and sounding data were used in many regions, particularly shallow water areas and semi-enclosed seas, to constrain the gridding process. It is a continuous digital terrain model for ocean and land, with land elevations derived from the Global Land One-km Base Elevation (GLOBE) database.

It must be stressed that although the GEBCO One Minute Grid is presented at one minute intervals of latitude and longitude, this does not imply that knowledge is available on sea floor depth at this resolution. It is important to note that, in most places, many miles exist between adjacent ship tracklines and that the grid is an interpolation based upon the input data.

Date (Publication): 2008-01-01T00:00:00

Edition: Second

Presentation form: Digital map

Purpose: The General Bathymetric Chart of the Oceans (GEBCO) aims to provide the most authoritative, publicly-available bathymetry data sets for the world's oceans.

Status: Completed

Maintenance and update frequency: As needed

Theme

bathymetry
depths
GEBCO
fisheries
fishery

Place

World

GEMET

Use limitation: NOT TO BE USED FOR NAVIGATION OR FOR ANY OTHER PURPOSE INVOLVING SAFETY AT SEA.

Use constraints: Copyright

Other constraints: The GEBCO One Minute Grid is available for download from the GEBCO Gridded bathymetry data web page (see link in the Distribution Info Section). To download the data, you need to be a registered BODC web user. The GEBCO One Minute Grid is subject to copyright and should not be passed on to third parties without prior permission from BODC. An acknowledgement to the source of the data set should be given. Suggested text: "The GEBCO One Minute Grid as derived from the GEBCO Digital Atlas is subject to copyright restrictions. Reproduction in derivative form for scientific research, environmental conservation, education or other non-commercial purposes is authorised without prior permission of the copyright holders, providing the source material is properly credited. Any material reproduced from the GEBCO Digital Atlas should be accompanied by appropriate attribution to the source of the material. The source should be acknowledged as 'Reproduced from the GEBCO Digital Atlas published by the British Oceanographic Data Centre on behalf of IOC and IHO, 2003'. The production of the GEBCO Digital Atlas is the culmination of a community based endeavour involving numerous scientists and hydrographers across the world who have devoted much of their time and effort, often on a voluntary basis. For the most part, this endeavour was stimulated by a wish to create an authoritative, high quality bathymetry of the world's oceans for the benefit of humanity. The GEBCO community does not wish the contents of the GEBCO Digital Atlas, either in whole or in part, to be used for commercial gain and requests that any monies accruing from sales of the GDA CDROM set should be reinvested in the further development of GEBCO. Copying of the data from the GEBCO Digital Atlas in digital form for dissemination to third parties is prohibited without prior written permission from the British Oceanographic Data Centre. Reproduction for resale or for use in a commercial product or for any other commercial purpose is prohibited without the prior written permission of the copyright holders. In the first instance, any request for such permission should be addressed to the British Oceanographic Data Centre and should include a clear statement of the purpose for which the material will be used and the manner in which it will be reproduced. In the case of commercial activities, consideration will always be given to the possibility of making an appropriate charge, the benefits from which will be used for the further development of GEBCO. The legal copyright of the main components of the GEBCO Digital Atlas is held by the UK Natural Environment Research Council (NERC), on behalf of the Intergovernmental Oceanographic Commission (of UNESCO) and the International Hydrographic Organization through the Joint IOC/IHO Guiding Committee for GEBCO."

Spatial representation type: Grid

Language: English

Character set: UTF8

Topic category

Elevation
Oceans

Supplemental Information: The GEBCO Digital Atlas is published and maintained by the British Oceanographic Data Centre (BODC) of the Natural Environment Research Council (NERC) on behalf of the International Hydrographic Organization (IHO) and the Intergovernmental Oceanographic Commission (IOC) of UNESCO acting through the Joint IOC/IHO Guiding Committee for GEBCO.

The General Bathymetric Chart of the Oceans (GEBCO) aims to provide the most authoritative, publicly-available bathymetry data sets for the world's oceans.

The Centenary Edition of the GEBCO Digital Atlas is published on CD-ROM.

Unique resource identifier: EPSG:4326

Number of dimensions: 2

Dimension name: Column

Dimension size: 21601

Resolution: 0.016667 Degree,

Dimension name: Row

Dimension size: 10801

Resolution: 0.016667 Degree,

Cell geometry: Area

Transformation parameter availability

Units of distribution: Raster format

Transfer size: 368.658

OnLine resource

Protocol	Linkage	Name
WWW:LINK-1.0-http--link	http://www.gebco.net/data_and_products/gebco_digital_atlas/
WWW:LINK-1.0-http--link	http://www.gebco.net/data_and_products/gridded_bathymetry_data/
WWW:LINK-1.0-http--link	http://www.gebco.net/
WWW:LINK-1.0-http--link	http://www.bodc.ac.uk

Hierarchy level: Dataset

Statement: The GEBCO One Minute Grid is an ArcInfo Grid version of the original data source gridone.grd NetCDF file.

GEBCO is essentially a deep ocean product and does not include detailed bathymetry for shallow shelf waters. Even to the present day, most areas of the world's oceans have not been fully surveyed and, for the most part, bathymetric mapping is an interpretation based on random tracklines of data from many different sources. The quality and coverage of data from these sources is highly variable. Although the GEBCO grid is presented at one minute intervals of latitude and longitude, this does not imply that knowledge is available on seafloor depth at this resolution - the depth in most one minute squares of the world's oceans has yet to be measured.