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Our Data Contributors

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Data contributors

We are continually working to update and improve our global bathymetric grid. This is only possible through access to data sets and regional bathymetric compilations made available by the international community. We thank all data contributors.

Even to this day large areas of the global ocean floor have not been mapped using modern echo-sounding techniques. Help us to map the gaps, find out how to contribute your data and get involved in GEBCO.

The GEBCO grid has been built from data from a number of sources, including regional and global grids and hundreds of individual surveys made available through international and national databases such as the IHO Data Center for Digital Bathymetry (IHO-DCDB). We are also grateful to our partners in industry for their data contributions to help update the GEBCO grid.

The table below lists the regional bathymetric compilations included in the current GEBCO grid, GEBCO_2019. For further information on the development of the GEBCO grid and data sets included in it, please see the accompanying documentation.

Compilations and gridded contributions

Contributing Project/Organization Regional Data Set (including reference/link where available)
Alaska Fisheries Science Center of the US National Oceanic and Atmospheric Administration's National Marine Fisheries Service Bathymetry data from the Alaska bathymetry compilations for the Aleutian Islands, central Gulf of Alaska and Norton Sound. https://www.afsc.noaa.gov/RACE/groundfish/Bathymetry/default.htm
Arndt NE Greenland model Digital bathymetric model of NE Greenland
Arndt, J E, W Jokat, B Dorschel, R Myklebust, J A Dowdeswell and J Evans (2015). A new bathymetry of the Northeast Greenland continental shelf: Constraints on glacial and other processes. Geochemistry, Geophysics, Geosystems. 16. doi:10.1002/2015GC005931
Baltic Sea Bathymetry Database (BSBD) team Baltic Sea Hydrographic Commission (2013). Baltic Sea Bathymetry Database version 0.9.3
Downloaded from
Bureau of Ocean Energy Management (BOEM) Northern Gulf of Mexico Deepwater Bathymetry Grid from 3D Seismic
Canadian Hydrographic Service Non-Navigational (NONNA-100) Bathymetric Data: represent all currently validated, digital bathymetric sources acquired by CHS, combined at a resolution of approximately 100 metres. Contains information licensed under the Open Government Licence – Canada.


Deep Reef Explorer (www.deepreef.org) High-resolution depth model for the Great Barrier Reef – 30 Beaman, R J (2018). High-resolution depth model for the Great Barrier Reef - 30 m. Geoscience Australia, Canberra, Australia.
Deep Reef Explorer (www.deepreef.org) High-resolution depth model for the Northern Australia – 100m, V3 Beaman, R J (2010). Project 3D-GBR: A high-resolution depth model for the Great Barrier Reef and Coral Sea. Marine and Tropical Sciences Research Facility (MTSRF) Project 2.5i.1a Final Report, MTSRF, Cairns, Australia, pp. 13 plus Appendix 1 (Internal Report).
EMODnet The EMODnet Digital Bathymetry (DTM) 2018.
A multilayer bathymetric product for Europe’s sea basins, based upon more than 9400 bathymetric survey data sets and Composite DTMs gathered from 49 data providers from 24 countries.
EMODnet Bathymetry Consortium (2018): EMODnet Digital Bathymetry (DTM): http://doi.org/10.12770/18ff0d48-b203-4a65-94a9-5fd8b0ec35f6
Geological Survey of Israel Hall, J K (2002). Bathymetric compilations of the seas around Israel I: The Caspian and Black Seas. Geological Survey of Israel, Current Research, Vol. 13, December 2002.
Geomar Bathymetric grid for part of the Red Sea region and the South East Pacific region:
https://doi.org/10.1594/PANGAEA.860374 and https://doi.org/10.1594/PANGAEA.785515
Geoscience Australia High-resolution depth model for Northern Australia - 30 m (2018)


Geoscience Australia 50m Multibeam Dataset of Australia 2012
Wilson, O, C Buchanan and M Spinoccia (2012). 50m Multibeam Dataset of Australia 2012
Geoscience Australia Australian Bathymetry and Topography Grid, June 2009
ANZLIC unique identifier: ANZCW0703013116, Geoscience Australia.
Whiteway, T, (2009). Australian Bathymetry and Topography Grid, June 2009. Scale 1:5000000. Geoscience Australia, Canberra. http://dx.doi.org/10.4225/25/53D99B6581B9A.
Geoscience Australia MH370 - Phase One Data Release
Global Multi-resolution Topography Data Synthesis (GMRT) GMRT version 3.5.
A multi-resolutional compilation of edited multibeam sonar data collected by scientists and institutions worldwide, that is reviewed, processed and gridded by the MGDS Team and merged into a single continuously updated compilation of global elevation data, provided at 15 arc sec resolution to GEBCO.
Global Sea Mineral Resources NV (GSR), DEME Group, Belgium Bathymetric grid, based on multibeam data, supplied to GEBCO for a region of the North Pacific, 1800 km southwest of the Mexican Baja Peninsula.
IceBridge BedMachine Greenland IceBridge BedMachine Greenland, Version 3, -80 - 10°E; 60-90°N:
Bed topography/bathymetry map of Greenland based on mass conservation, multi-beam data, and other techniques.
Morlighem, M, C N Williams, E Rignot, L An, J E Arndt, J L Bamber, G Catania, N Chauché, J A Dowdeswell, B Dorschel, I Fenty, K Hogan, I Howat, A Hubbard, M Jakobsson, T M Jordan, K K Kjeldsen, R Millan, L Mayer, J Mouginot, B P Y Noël, C O'Cofaigh, S Palmer, S Rysgaard, H Seroussi, M J Siegert, P Slabon, F Straneo, M R van den Broeke, W Weinrebe, M Wood and Zinglersen (2017). BedMachine v3: Complete Bed Topography and Ocean Bathymetry Mapping of Greenland From Multibeam Echo Sounding Combined With Mass Conservation. Geophysical Research Letters 44, 11,051-011,061, doi:10.1002/2017GL074954
International Bathymetric Chart of the Arctic Ocean (IBCAO) IBCAO v3 bathymetric grid, 180°W-180°E; 64°N-90°N:
The grid for the Arctic Ocean area is based on the IBCAO V13 data base as documented in:
Jakobsson, M, L A Mayer, B Coakley, J A Dowdeswell, S Forbes, B Fridman, H Hodnesdal, R Noormets, R Pedersen, M Rebesco, H-W Schenke, Y Zarayskaya, D Accettella, A Armstrong, R M Anderson, P Bienhoff, A Camerlenghi, I Church, M Edwards, J V Gardner, J K Hall, B Hell, O B Hestvik, Y Kristoffersen, C Marcussen, R Mohammad, D Mosher, S V Nghiem, M T Pedrosa, P G Travaglini and P Weatherall (2012). The International Bathymetric Chart of the Arctic Ocean (IBCAO) Version 3.0. Geophysical Research Letters, doi: 10.1029/2012GL052219

International Bathymetric Chart of the Southern Ocean (IBCSO) IBCSO v1 bathymetric grid, 180°W-180°E; 60S-90°S:
The grid for the Southern Ocean area is based on the IBCSO V1 data base as documented in the source id list: https://www.scar.org/science/ibcso/resources/
Arndt, J E, H W Schenke, M Jakobsson, F Nitsche, G Buys, B Goleby, M Rebesco, F Bohoyo, J K Hong, J Black, R Greku, G Udintsev, F Barrios, W Reynoso-Peralta, T Morishita and R Wigley (2013). The International Bathymetric Chart of the Southern Ocean (IBCSO) Version 1.0 - A new bathymetric compilation covering circum-Antarctic waters. Geophysical Research Letters, doi: 10.1002/grl.50413
Israeli Ministry of National Infrastructure, Energy and water Resources Israel EEZ
Hall J K, S Lippman, G Tibor, M Gardosh, A R Sade, H Sade, A Golan, G Amit, L Gur-Arie and I Nissim. A New Bathymetric Map for the Israeli EEZ: Preliminary Results
Japan Oceanographic Data Center (JODC) of the Japan Coast Guard Japan Coast Guard Grid for the North Western Pacific Ocean
Provided at 30 arc-second intervals, Tthe grid for this area was originally developed from the following source data::
Multibeam data from the Japan Coast Guard, A pre-prepared 500m interval grid based on measured sounding data: J-EGG500 grid JODC-Expert Grid data for Geographic -500m
National Institute of Water and Atmospheric Research Ltd (NIWA). Wellington New Zealand Bathymetry compilation - 250 m
Mitchell, J S, K A Mackay, H L Neil, E J Mackay, A Pallentin and P Notman (2012). Undersea New Zealand, 1:5,000,000. NIWA Chart, Miscellaneous Series No. 92
NOAA Alaskan fisheries Digitized chart soundings, Alaska
Proofed digitized historical chart soundings from “smooth sheets” covering Alaskan waters.
Zimmermann, M, A De Robertis and O Ormseth (2018). Verification of historical smooth sheet bathymetry for the Gulf of Alaska - Integrated Ecosystem Research Program. Deep Sea Research Part II: Topical Studies in Oceanography. doi:10.1016/j.dsr2.2018.06.006.
Zimmermann, M and M Prescott (2018). Bathymetry and Canyons of the Eastern Bering Sea Slope. Geosciences. 8. 184. doi:10.3390/geosciences8050184.
Norwegian Hydrographic Service (NHS) Svalbard bathymetry grid
Released in 2016, this dataset includes modern multibeam data from surveys up until autumn 2015. Data is gridded to 10x10 m.
Norwegian Polar Institute (NPI) Svalbard topography grid
New topographical data of Svalbard with updated glacial fronts from satellite imaging.
Nunaoil A/S New bathymetry models in Baffin Bay, Northeast and Western Greenland.
Olex AS, Norway (www.olex.no) Data supplied to GEBCO for:
  • Areas of the North Atlantic off the west coast of Africa.
  • Areas of the Northwest European Continental Shelf.
  • The Arctic Ocean area.
  • Scripps Institution of Oceanography SRTM15+ v1 Olson, C J, J J Becker and D T Sandwell (2016). SRTM15+: Data fusion of Shuttle Radar Topography Mission (SRTM) land topography with measured and estimated seafloor topography (NCEI Accession 0150537).
    Data resampled to cell registered format for GEBCO.
    Service Hydrographique et Océanographique de la Marine (shom), France Bathymetric data supplied in the form of grids, largely from multibeam and Lidar bathymetric surveys and transect cruises in areas of the Pacific, Atlantic and Indian Oceans, from the data holdings and cruises of shom
    South West Indian Ocean Bathymetry Compilation (SWIOBC) Dorschel, B, L Jensen, J E Arndt, G-J Brummer, H de Haas, A Fielies, D Franke, W Jokat, R Krocker, D Kroon, J Pätzold, R R. Schneider, V Spieß, H Stollhofen, G Uenzelmann‐Neben, M Watkeys and E Wiles (2018). The Southwest Indian Ocean Bathymetric Compilation (SwIOBC). Geochemistry, Geophysics, Geosystems 19, no. 3 (March 2018): 968–76.
    University of Alaska Fairbanks and its College of Fisheries and Ocean Sciences Alaska Region Digital Elevation Model (ARDEM) Version 2.0.
    Danielson, S L, E L Dobbins, M Jakobsson, M A Johnson, T J Weingartner, W J Williams and Y Zarayskaya (2015), Sounding the northern seas, Eos, 96, doi:10.1029/2015EO040975
    University of New Hampshire and its Center for Coastal and Ocean Mapping/Joint Hydrographic Center (UNH/CCOM-JHC) United States Atlantic Law of the sea bathymetric grid, version 2017
    US-Extended Continental Shelf (ECS) cruises Cruise data in:
  • Gulf of Alaska
  • Necker Ridge
  • Kingman Palmyra
  • Mendocino

  • https://www.ngdc.noaa.gov/mgg/ecs/cruises.html

    Multibeam Survey Data

    Source Description and Reference (where available)
    IHO DCDB Bathymetric Soundings extracted from the data maintained by the International Hydrographic Organization (IHO) Data Center for Digital Bathymetry (DCDB) at the US National Centers for Environmental Information (NCEI).
    Alfred Wegener Institute (AWI) 81 Cruises of Multibeam data in the Atlantic and Indian Ocean region.
    11 Cruises of multibeam data in the South and West Pacific:
    British Antarctic Survey (BAS) Multibeam data from three cruises of the RRS James Clark Ross.
    Dufek (Sonne) 2 cruises in the Atlantic Ocean.
    Fugro 8 Cruises of Multibeam data in the Atlantic and Indian Ocean region.
    Indian Ocean Bathymetric Compilation 102 Cruises of Multibeam data in the Atlantic and Indian Ocean region.
    Irish Marine Institute 3 Cruises of Multibeam data in the Atlantic and Indian Ocean region.
    Geological Institute, Russian Academy of Sciences (GIN RAS) Knipovich Ridge
    Multibeam data from four surveys with RV Akademik Nikolaj Strakhov of the Knipovich Ridge. Updated since IBCAO v3 with higher resolution.
    Zayonchek A V, H Brekke, S Yu. Sokolov, A O Mazarovich, K O Dobrolyubova, V N Efimov, A S Abramova, Yu A Zaraiskaya, A V Kokhan, E A Moroz, A A Peive, N P Chamov and K P Yampol'skii (2010). The Structure of Continent-Ocean transition zone at North-West Barents Sea Margin (results of 24-26-th cruises of RV “Akademik Nikolaj Strakhov”, 2006-2009) // Structure and evolution of the Lithosphere. Contribution of Russia to International Polar Year. Vol.4. M Paulsen. pp.111-157.
    Greenland Institute of Natural Resources Crowd source data and multibeam data from Weinrebe Poseidon cruise.
    Japan Agency for Marine-Earth Science and Technology (JAMSTEC) 22 cruises of MBES data in the South and West Pacific Ocean region
    Data and Sample Research System for Whole Cruise Information in JAMSTEC
    Korea Polar Research Institute (KOPRI) Multibeam data from Araon cruise ARA02B.
    MARUM - Center for Marine Environmental Sciences, University of Bremen Multibeam data from two cruises of the RV Heincke.
    NASA-OMG Multibeam mapping carried out by the Ocean Melting Greenland Project (OMG).
    Fenty, I, J K Willis, A Khazendar, S Dinardo, R Forsberg, I Fukumori, D Holland, M Jakobsson, D Moller, J Morison, A Münchow, E Rignot, M Schodlok, A F Thompson, K Tinto, M Rutherford and N Trenholm (2016). Oceans Melting Greenland: Early results from NASA's ocean-ice mission in Greenland. Oceanography 29(4):72-83, https://doi.org/10.5670/oceanog.2016.100.
    OET-Nautilus US Non – ECS Nautilus west coast cruises
    20 Cruises of Multibeam data in the North Pacific
    Stockholm University, Geological Sciences Multibeam data from icebreaker Oden expeditions, e.g. Petermann 2015, SWERUS-C3 2014 and LOMROG 2012.
    Also included is the Vega expedition in 2013, with Explorer of Sweden.
    Oden Mapping data: https://oden.geo.su.se/
    TelePost Greenland A/S Multibeam data from South Greenland on the RV OGS Explora.
    The University Centre in Svalbard (UNIS) Multibeam data from Svalbard, from four cruises on the RV Helmer Hanssen.
    US-Extended Continental Shelf (ECS) cruises Cruise data in:
  • Gulf of Alaska
  • Necker Ridge
  • Kingman Palmyra
  • Mendocino

  • https://www.ngdc.noaa.gov/mgg/ecs/cruises.html

    Other contributions

    Source Description and Reference (where available)
    Member States of the International Hydrographic Organization (IHO) Bathymetric soundings extracted from Electronic Navigation Charts (ENCs) provided by IHO Member States. Access further details about ENC contributions made to GEBCO. www.gebco.net/data_and_products/gridded_bathymetry_data/shallow_water_bathymetry
    Geological Survey of Denmark and Greenland (GEUS) Singlebeam data from BB2012, Baffin Bay, Greenland.
    National Geospatial-Intelligence Agency (NGA) Singlebeam data in Melville Bay, Greenland.
    South African Navy Hydrographic Office ENC data for South African Waters
    US Navy Singlebeam data in Arctic region from US Navy submarines USS New Hampshire, USS Connecticut and USS Topeka.