GEBCO’s current gridded bathymetric data set, the GEBCO_2024 Grid, is a global terrain model for ocean and land, providing elevation data, in meters, on a 15 arc-second interval grid. It is accompanied by a Type Identifier (TID) Grid that gives information on the types of source data that the GEBCO_2024 Grid is based on.

GEBCO releases a new global grid every year, generally in late June. Find out more about the grid generation process.

The Nippon Foundation-GEBCO Seabed 2030 project has produced a global terrain model for ocean and land. The GEBCO_2023 grid was published in April 2023 and is the fifth GEBCO grid developed through The Nippon Foundation-GEBCO Seabed 2030 Project. This is a collaborative project between the Nippon Foundation of Japan and GEBCO. The Seabed 2030 Project aims to bring together all available bathymetric data to produce the definitive map of the world ocean floor and make it available to all.

The GEBCO_2023 Grid is a continuous, global terrain model for ocean and land with a spatial resolution of 15 arc seconds. Between latitudes of 50° South and 60° North it uses version 2.5.5 of the SRTM15+ dataset as a \"base\". This data set is a fusion of land topography with measured and estimated seafloor topography. This version of SRTM15+ is similar to version 2.1 [Tozer et al., 2019] but includes additional data sets. It uses predicted depths based on the V32 gravity model [Sandwell et al., 2019]. The SRTM15+ base grid has been augmented with the gridded bathymetric data sets developed by the four Seabed 2030 Regional Centers to produce the GEBCO_2023 Grid. Note: SRTM15+ V2.5.5 is also available through OpenTopography here.

The information for ice-surface elevation and under-ice topography/bathymetry is taken from IceBridge BedMachine Greenland, Version 4.6 (Morlighem, M. et al. 2017) and data based on MEaSUREs BedMachine Antarctica, Version 2 (Morlighem, M. et al 2020).

NOTE: This dataset includes under-ice sheet topography. For a version of the dataset with ice surface topography see \"GEBCO IceTopo\" below under \"Other Available Data Products\".

This file geodatabase contains bathymetric contours derived from the General Bathymetric Chart of the Oceans GEBCO_2024 grid, which is a global bathymetry compilation at 15 arc-second resolution. Depths are displayed in meters. The contour interval is 500 meters, with supplementary contours in shallower water.These contours were used to generate the GEBCO Bathymetric Contours (NOAA NCEI Visualization) tiled service.A "smoothing" process was done in ArcGIS Pro to generate these contours:Create a version of the GEBCO grid using the Convolution raster function "Smoothing 3x3" option.Generate contours at selected intervals using "Contour List".Generalize the contours using "Simplify Line" with a tolerance of 0.005 degrees.Please also see NOAA/NCEI's color shaded-relief visualization of the GEBCO grid.

The data set consists of digital bathymetric contours taken from the International Bathymetric Chart of the Mediterranean (IBCM) chart series. Most of the IBCM sheets depict contours at depths at 0m (coastline), 20m, 50m, 100m, and 200m, and at 200m intervals thereafter, although the actual contours displayed vary slightly from sheet to sheet. The data set is included in the GEBCO Digital Atlas (GDA). Through the GDA software interface the IBCM bathymetric contours can be exported in ASCII or shapefile format. The 10 sheets of the IBCM chart series are on a Mercator Projection at a scale of 1:1 million (at 38 N). The Black Sea is included at a scale of 1:2 million. The IBCM (1st Edition) chart series was published by the Head Department of Navigation and Oceanography of the USSR Ministry of Defence, St. Petersburg, under the auspices of the Intergovernmental Oceanographic Commission (IOC) of UNESCO 1981. The bathymetric contours and coastlines from the IBCM sheets were digitised. Error checking and quality control work on the data set was carried out at BODC. The digital data set was first made available in 1988.

The GEBCO_2014 Grid - a continuous terrain model for oceans and land at 30 arc-second intervals. The data in the GEBCO_2014 Grid should not be used for navigation or any purpose relating to safety at sea. cdm_data_type=Grid comment=The data in the GEBCO_2014 Grid should not be used for navigation or any purpose relating to safety at sea. Conventions=CF-1.6, COARDS, ACDD-1.3 Easternmost_Easting=-9.995833333333334 geospatial_lat_max=50.00416666666666 geospatial_lat_min=-0.004166666666666667 geospatial_lat_resolution=0.008333333333333333 geospatial_lat_units=degrees_north geospatial_lon_max=-9.995833333333334 geospatial_lon_min=-99.99583333333334 geospatial_lon_resolution=0.008333333333333333 geospatial_lon_units=degrees_east history=This is version 20150318 of the data set. Information on the history of the data set can be found in the data set documentation available from the internet: http://www.gebco.net/data_and_products/gridded_bathymetry_data/ infoUrl=??? institution=GEBCO, BODC . keywords_vocabulary=GCMD Science Keywords node_offset=1 Northernmost_Northing=50.00416666666666 references=Information on the data set is available from the GEBCO project web pages: http://www.gebco.net/data_and_products/gridded_bathymetry_data/ source=The bathymetric portion of the GEBCO_2014 Grid was largely developed from a database of ship track soundings with interpolation between soundings guided by satellite-derived gravity data. In areas where they improve on this existing base grid, data sets developed by other methods are included. Recognising the importance of local expertise when building a global bathymetric model, GEBCO have been working with regional mapping groups to improve the existing GEBCO grid. Details about the development of the grid and the data sets included can be found in the documentation that accompanies the data set. With the exception of polar regions, land data are based on the 1-km averages of topography derived from version 2.0 of the US Geological Survey SRTM30 gridded digital elevation model data product, created with data from the US National Aeronautics and Space Administration (NASA) Shuttle Radar Topography Mission. For the Arctic region north of 64N the GEBCO grid is based on the International Bathymetric Chart of the Arctic Ocean (IBCAO) v3. This data set uses land data taken largely from the Global Multi-resolution Terrain Elevation Data 2010 (GMTED2010) data set. Over Greenland the approximately 2000 by 2000 m resolution Digital Elevation Model (DEM) published by Ekholm (1996) is used. For the Southern Ocean area, south of 60S, land data are taken from Bedmap2 data set as included in the International Bathymetric Chart of the Southern Ocean (IBCSO). The grid is accompanied by a Source Identifier grid, which identifies which grid cells are based on soundings or existing grids and which have been interpolated. The grid uses the convention that depths are negative. sourceUrl=(local files) Southernmost_Northing=-0.004166666666666667 standard_name_vocabulary=CF Standard Name Table v70 Westernmost_Easting=-99.99583333333334

A polygonised bathymetric dataset covering the Southern Ocean. The dataset was compiled from data sourced from the General Bathymetric Chart of the Oceans (GEBCO) Digital Atlas, 2003 edition, and the Antarctic Digital Database, version 4.

The General Bathymetric Chart of the Oceans (GEBCO) consists of an international group of experts who work on the development of a range of bathymetric data sets and products. GEBCO operates under the joint auspices of the International Hydrographic Organization (IHO) and the Intergovernmental Oceanographic Commission (IOC) of UNESCO. See our web site for more information about GEBCO at https://www.gebco.net/. This service provides access to GEBCO's latest global bathymetric grid, GEBCO_2014, in the form of shaded relief imagery as layer 'GEBCO_LATEST'. It also provides access to imagery based on the Source Identifier (SID) Grid that accompanies the GEBCO_2014 Grid as GEBCO_LATEST_SID. The GEBCO_2014 Grid is a global grid of elevation data at 30 arc-second intervals. This data set is available as a Web Map Service (WMS) for use as imagery in your applications. The bathymetric portion of the grid was largely generated from a database of ship-track soundings with interpolation between soundings guided by satellite-derived gravity data. However, in areas where they improve on the existing GEBCO Grid, data sets generated by other methods have been included. Further information about the data sets included in the grid can be found in the documentation that accompanies the data set and is available from https://www.gebco.net/data_and_products/gridded_bathymetry_data/ Within the GEBCO grid land elevation data is largely taken from the 30 arc-second version of the Shuttle Radar Topography Mission data set (SRTM30). Further details can be found in the data set's documentation. The imagery for land areas in this WMS, north of 60 degrees south, is largely taken from the NASA Blue Marble: Next Generation data set, produced by Reto Stockli, NASA Earth Observatory, the NASA Goddard Space Flight Center (http://earthobservatory.nasa.gov/Features/BlueMarble). For land areas south of 60 degrees south, coastline and ice shelf information is taken from the Scientific Committee on Antarctic Research (SCAR) Antarctic Digital Database coastline dataset (http://www.add.scar.org). The GEBCO global grid is accompanied by a Source Identifier (SID) grid - this indicates which of the corresponding cells in the GEBCO grid are based on soundings or existing grids and which are interpolated. The SID grid accompanying the GEBCO_2014 Grid is available as a layer in this WMS, GEBCO_LATEST_SID. GEBCO's first gloabl 30 arc-second interval terrain model was the GEBCO_08 Grid, published in January 2009. The WMS layer generated for the 2010 version of the GEBCO_08 Grid is included as a layer, 'GEBCO_08', within this WMS to accommodate users of this existing WMS layer. Information on how to download the GEBCO's grids can be found at https://www.gebco.net/ Please note that GEBCO's grids are mainly deeper water data sets and do not contain detailed bathymetry in shallower water areas. This WMS has been developed by the British Oceanographic Data Centre (BODC) on behalf of the GEBCO community. If imagery from this WMS is included in web sites, reports and digital and printed imagery then we request that the source of the dataset is acknowledged and be of the form 'Imagery reproduced from the GEBCO Grid, version xxxxxx, www.gebco.net'. Where 'version xxxxxx' is the appropriate version number of the GEBCO Grid, given in the layer information below.

GEBCO is a global terrain model for ocean and land providing elevation data in meters on a 15 arc-second interval grid. It is accompanied by a Type Identifier (TID) Grid that gives information on the types of source data that the GEBCO_2022 Grid is based. More Info.What can you do with this layer?Determine spot elevations and depths by clicking on the map and viewing the pop-up.Use in analysis within ArcGIS Online or ArcGIS Pro to enrich points, lines, or polygons with associated elevation data. This can be achieved by using the “Sample” tool in ArcGIS Pro or ArcGIS Online.Use for visualization of seafloor features.Layers associated with the GEBCO 2022 product:GEBCO Type Identifier 2022GEBCO Depth Zones 2022GEBCO 500m Contours 2022GEBCO Shaded Relief 2022GEBCO Bathymetry 2022For more GEBCO related layers and maps please visit the GEBCO ArcGIS Online Group.Source: GEBCO Compilation Group (2022) GEBCO_2022 Grid (doi:10.5285/e0f0bb80-ab44-2739-e053-6c86abc0289c)

A color shaded relief visualization of the General Bathymetric Chart of the Oceans GEBCO_2024 grid, combined with generalized land cover coloration from the Natural Earth 1 dataset. The Natural Earth 1 imagery and lake polygons were obtained from https://naturalearthdata.com. The coastline displayed is from Esri's World Countries dataset.Please also see NOAA/NCEI's layer of GEBCO bathymetric contours.A grayscale version is also available, and see here for a map with both hillshade and contours included.

The GEBCO world map shows the shape and depth of the global ocean floor as a shaded relief map. This is the third release of the map and now includes the names of features on the sea floor from the IHO-IOC GEBCO Gazetteer of Undersea Feature Names. The map is based upon bathymetry data from the GEBCO_08 Grid, version 20100927, a global bathymetric grid with 30 arc-second spacing. The land imagery is taken from the US National Aeronautics and Space Administration's (NASA) Blue Marble data set. The coastline is taken from the World Vector Shoreline.

The GEBCO Grid is a global terrain model for oceans and land at 30 arc-second intervals which was developed and first released in 2009 by the General Bathymetric Chart of the Oceans (GEBCO) as GEBCO 08. The current release is GEBCO 2014, released in December 2014 and updated in March 2015. GEBCO is an international group of experts who work on the development of a range of bathymetric (accurate mapping of the sea floor) data sets and data products. The bathymetric portion of the grid is largely based on a database of ship-track soundings with interpolation between soundings guided by satellite-derived gravity data. Data sets developed by other methods are also included where they improve the grid. The land portion of the grid is largely based on the US Geological Survey's SRMT30 data set, developed with data from the US National Aeronautics and Space Administration (NASA) Shuttle Radar Topographic Mission (SRTM). For the area around Antarctica, the land data are taken from the Bedmap2 data set. The grid is accompanied by a Source Identifier (SID) Grid which identifies which cells in the GEBCO Grid are based on soundings or existing grids and which have been interpolated. The data sets are updated as new bathymetric compilations are made available. Both grids are freely available to download, in netCDF; data GeoTiff and Esri ASCII raster formats, from the web. Free software is available for viewing and accessing data from the grids in netCDF and ASCII data formats. The grids are also included as part of the GEBCO Digital Atlas DVD.

The General Bathymetric Chart of the Oceans (GEBCO) Digital Atlas (GDA) contains global bathymetric data sets, consisting of the latest versions of GEBCO’s global gridded bathymetric data sets; global bathymetric contour and accompanying trackline control data sets; bathymetric contours and coastlines from the First Edition of the International Bathymetric Chart of the Mediterranean (IBCM); a set of digital global coastlines based on the World Vector Shoreline data set (coastlines south of 60S have been removed) at a range of scales from 1:43 million to 1:250,000; the SCAR coastline of Antarctica (version 3.0) at a range of scales from 1:30 million to 1:250,000; and a digital set of geographically referenced feature names including the International Hydrographic Organization (IHO)/Intergovernmental Oceanographic Commission (IOC) Gazetteer of Geographic Names of Undersea Features. The GEBCO dataset has global coverage and was first released in 1994. The contents of the GDA are updated periodically to include new versions of GEBCO’s bathymetric grids. The GDA is distributed on DVD and includes full documentation and a software interface for viewing and accessing the data sets.

Overview This dataset contains global bathymetry, or water depth, measurements from the General Bathymetric Chart of the Oceans (GEBCO), converted into the format needed for WRF's Pre-processing System (WPS). The data are read in for the use of a depth-dependent water surface roughness scheme. Data Details File is zipped directory topobath_30s which includes the following files: .txt: index .bil: 08401-09600.13201-14400 10801-12000.15601-16800 14401-15600.13201-14400 18001-19200.15601-16800 20401-21600.15601-16800 22801-24000.15601-16800 25201-26400.15601-16800 08401-09600.14401-15600 10801-12000.16801-18000 14401-15600.14401-15600 18001-19200.16801-18000 20401-21600.16801-18000 22801-24000.16801-18000 25201-26400.16801-18000 08401-09600.15601-16800 12001-13200.13201-14400 14401-15600.15601-16800 18001-19200.18001-19200 20401-21600.18001-19200 22801-24000.18001-19200 25201-26400.18001-19200 08401-09600.16801-18000 12001-13200.14401-15600 14401-15600.16801-18000 18001-19200.19201-20400 20401-21600.19201-20400 22801-24000.19201-20400 26401-27600.16801-18000 09601-10800.13201-14400 12001-13200.15601-16800 15601-16800.15601-16800 19201-20400.14401-15600 21601-22800.14401-15600 24001-25200.14401-15600 26401-27600.18001-19200 09601-10800.14401-15600 12001-13200.16801-18000 15601-16800.16801-18000 19201-20400.15601-16800 21601-22800.15601-16800 24001-25200.15601-16800 27601-28800.16801-18000 09601-10800.15601-16800 13201-14400.13201-14400 15601-16800.18001-19200 19201-20400.16801-18000 21601-22800.16801-18000 24001-25200.16801-18000 27601-28800.18001-19200 09601-10800.16801-18000 13201-14400.14401-15600 16801-18000.16801-18000 19201-20400.18001-19200 21601-22800.18001-19200 24001-25200.18001-19200 10801-12000.13201-14400 13201-14400.15601-16800 16801-18000.18001-19200 19201-20400.19201-20400 21601-22800.19201-20400 24001-25200.19201-20400 10801-12000.14401-15600 13201-14400.16801-18000 18001-19200.14401-15600 20401-21600.14401-15600 22801-24000.14401-15600 25201-26400.14401-15600 Data Quality The provided 30 arc second GEBCO bathymetry data were masked with WRF's 30-second land mask data and over-water measurements (negative in GEBCO) were converted to depth (positive number relative to water surface). The data were then compared to existing lake depth values in WRF where only minor differences were found. Uncertainty The land mask data and bathymetry data are not from the same source but were collected in a similar fashion. Areas may exist where GEBCO is providing over-water information while WRF's land mask shows it is land, and vice-versa. These situations are accounted for by setting the depth to a default value where ever inconsistencies are found. Constraints This data are currently set up for ease of use with WRF and proper care should be taken when trying to use the data for other purposes. It is recommended that the GEBCO data be downloaded directly in this case.

GEBCO’s gridded bathymetric data set, the GEBCO_2020 grid, is a global terrain model for ocean and land at 15 arc-second intervals.Original data source: https://www.gebco.net/data_and_products/gridded_bathymetry_data/This depth contours are generated from GEBCO's gridded bathymetry which is clipped by GCOOS Region (https://gis.gcoos.org/arcgis/rest/services/Stations/The_GCOOS_Region/MapServer/2). There are 4 different datasets: 1) 500m interval, namely 500m, 1000m, 1500m, 2000m, 2500m, 3000m, 3500m depth contours. 2) 100m interval, 3) 10m interval. 4) Selected (filtered) contours (10, 20, 30, 40, 50, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000, 1500, 2000, 2500, 3000, 3500m)

Data source and attribution: GEBCO Compilation Group (2024), GEBCO 2024 Grid (doi:10.5285/1c44ce99-0a0d-5f4f-e063-7086abc0ea0f)

GEBCO places their data in the public domain. Their terms of use give more detail on what users should and should not do with these data.

The General Bathymetric Chart of the Oceans (GEBCO) is a publicly available bathymetric chart of the world's oceans. The project was conceived with the aim of preparing a global series of charts showing the general shape of the seafloor. Over the years it has become a reference map of the bathymetry of the world's oceans for scientists and others.

To ensure usability of the Global Bathymetric Model (GEBCO) across all OS platforms in the TABS R-package, without dependencies of external software, a tiled version has been generated. Annually updated to the newest release of GEBCO.

GEBCO’s current gridded bathymetric data set, the GEBCO_2024 Grid, is a global terrain model for ocean and land, providing elevation data, in meters, on a 15 arc-second interval grid. It is accompanied by a Type Identifier (TID) Grid that gives information on the types of source data that the GEBCO_2024 Grid is based on. This release also includes a version of the grid with under-ice topography/bathymetry information for Greenland and Antarctica.

Gebco global 30 arc-second grid updated in 2008. On behalf of GEBCO, the GEBCO_08 and GEBCO is available to download from the British Oceanographic Data Centre (BODC).

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 International Hydrographic Organization(IHO) and the Intergovernmental Oceanographic Commission (IOC) (of UNESCO).

GEBCO produces and makes available a range of bathymetric data sets and products. This includes a global bathymetric grid; gazetteer of undersea feature names, a Web Map Service and printable maps of ocean bathymetry.