GEBCO (Gridded Bathymetric Chart of the Oceans)
Description
GEBCO provides global bathymetry data sets for the world's
oceans. However, it also includes land data, largely derived from
the SRTM30 data set.
The data is available at two grid spacings: 30 arcseconds
(GEBCO_08 Grid) and 1 arcminute (GEBCO One Minute Grid).
Grid Information
| Coord. System: |
Geographic decimal degrees, fixed-angle |
| Cell Size: |
30 arcseconds (1/120 degree or 1/2 arcminute) — GEBCO_08
1 arcminute (1/60 degree) — GEBCO 1-Min
Pixel-center registered |
| Tile Dimensions: |
43200 columns x 21600 rows (GEBCO_08, 1 tile)
21600 columns x 10800 rows (GEBCO 1-Min, 1 tile)
(43200 = 120 x 360; 21600 = 120 x 180; 10800 = 60 x 180)
|
| Tile Span: |
360 degrees (longitude) x 180 degrees (latitude) (GEBCO_08, 1 tile)
|
| Data Type: |
2-byte integer, signed |
| Horizontal Datum: |
WGS 84 |
| Vertical Datum: |
mean sea level |
| Vertical Units: |
meters |
| Nodata Value: |
Not applicable |
| Formats: |
NetCDF format, GMT (Generic Mapping Tools) conventions
|
Data Source
Availability
See comments for Data Source.
Web Sites
Main Page:
http://www.gebco.net
Download Page at BODC (UK):
https://www.bodc.ac.uk/data/online_delivery/gebco/
Copyright (C) RIVIX, LLC. 1998-2026
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