This map includes bathymetry and inland waters and roads, overlaid on land-cover and shaded relief imagery.
Map Service Name: World_Ocean_Base
Description
This map is designed to be used as a basemap by marine GIS professionals and as a reference map by anyone interested in ocean data. The basemap features marine bathymetry. Land features include inland waters and roads overlaid on land cover and shaded relief imagery.
The map was compiled from a variety of best available sources from several data providers, including General Bathymetric Chart of the Oceans GEBCO_08 Grid, National Oceanic and Atmospheric Administration (NOAA), National Geographic, Garmin, Geonames.org, Esri, and various other contributors. The basemap was designed and developed by Esri.
Note:
Data from the GEBCO_08 Grid shall not be used for navigation or for any other purpose relating to safety at sea. The GEBCO_08 Grid is largely based on a database of ship-track soundings with interpolation between soundings guided by satellite-derived gravity data. In some areas, data from existing grids are included. The GEBCO_08 Grid does not contain detailed information in shallower water areas, and information concerning the generation of the grid can be found on GEBCO website at www.gebco.net/data_and_products/gridded_bathymetry_data/. The GEBCO_08 Grid is accompanied by a Source Identifier (SID) Grid, which indicates which cells in the GEBCO_08 Grid are based on soundings or existing grids and which have been interpolated. The latest version of both grids and accompanying documentation is available to download, on behalf of GEBCO, from the British Oceanographic Data Centre (BODC) website at www.bodc.ac.uk/data/hosted_data_systems/gebco_gridded_bathymetry_data/. The names of the IHO (International Hydrographic Organization), IOC (Intergovernmental Oceanographic Commission), GEBCO (General Bathymetric Chart of the Oceans), NERC (Natural Environment Research Council) or BODC (British Oceanographic Data Centre) may not be used in any way to imply, directly or otherwise, endorsement or support of either the Licensee or their mapping system.
Contributors
The following table names the current Community Maps Program contributors to the World Ocean Basemap hosted by Esri and provides information on their specific content. The basemap was compiled to uniform cartography using a variety of best available sources from these data providers.
| Contributor | Coverage | Resolution | Scales |
|---|---|---|---|
General Bathymetric Chart of the Oceans (GEBCO) | Global | 927 meters | ~1:591,000,000 - 1:577,000 |
National Oceanic and Atmospheric Administration | US coastal waters, Great Lakes | 110 meters - 40 centimeters | ~1:18,000,000 - 1:9,000 in select areas |
Geoscience Australia | Australian coastal waters | ~1:9,000,000 – 1:72,000 in select areas | |
Seafloor Mapping Lab of California State University Monterey Bay | Southern California coast, Channel Islands | 25 meters - 2 meters | ~1:288,000 - 1:72,000 |
Canadian Hydrographic Service | North Pacific, Queen Charlotte Sound, Newfoundland Sea, Labrador Sea, and Gulf of St. Lawrence | 250 meters - 80 meters | ~1:4,500,000 - 1:72,000 |
University of New Hampshire Center for Coastal and Marine Mapping/Joint Hydrographic Center | Beringian Margin, Bowers Ridge, Necker Ridge, Line Islands, Mariana Trench, Mendocino Ridge, Sigsbee Escarpment, Florida Escarpment, and Atlantic Shelf | 180 meters - 60 meters | ~1:2,300,000 - 1:72,000 |
Davey Jones' Locker Seafloor Mapping/Marine GIS at Oregon State University | American Samoa | 200 meters | ~1:2,300,000 - 1:72,000 |
National Institute of Water and Atmospheric Research Ltd (NIWA) | New Zealand, higher-resolution data of Hauraki Gulf and Cook Strait | 250 meters, 20 meters | ~1:4,500,000 – 1:72,000 |
Geological Survey of Ireland | Western coast of Ireland up to 1,000 miles offshore, higher-resolution data in nearshore areas | 111 meters, 5 meters | ~1:2,300,000 – 1:9,000 |
OceanWise | Coastal waters around the islands of Great Britain and Ireland | 186 meters | ~1:4,500,000 – 1:9,000 |
Khaled bin Sultan Living Oceans Foundation | Red Sea | 2.5 meters - 7.5 meters | ~1:288,000 - 1:9,000 in select areas |
University of Hawaii School of Ocean and Earth Science and Technology | Hawaiian Islands | 50 meters | ~1:288,000 - 1:9,000 in select areas |
Attribution
Sources: Esri, Garmin, GEBCO, NOAA NGDC, and other contributors
Coordinate system
Web Mercator Auxiliary Sphere (WKID 102100)
Tiling scheme
Map service data format
Map server cache in JPEG format
Coverage
Coverage is provided at the following scales:
World Basic (Collection 1)
~1:591,000,000 to 1:577,000 worldwide; ~1:288,000 to ~1:144,000 in select areas
World Standard (Collection 2) and World Advanced (Collection 3)
~1:591,000,000 to ~1:577,000 worldwide; ~1:288,000 to ~1:9,000 in limited areas based on regional hydrographic survey data
North America Standard (Collection 4), North America Advanced (Collection 5)
Regional coverage from ~1:591,000,000 to ~1:9,000 in limited areas based on regional hydrographic survey data