Global Bathymetry BTM (Esri)

This dynamic image service combines topography (land elevation) and bathymetry (water depths) around the world. Heights are based on multiple sources and are orthometric (sea level = 0, and bathymetric values are negative downward from sea level). The source data of land elevation in this service is same as in the Terrain layer . When possible, the water areas are represented by the best available bathymetry. In the current services the bathymetry data is defined by the GEBCO 08 dataset . Data Sources: The data for this layer comes from the multiple sources listed below, with original source data in its native coordinate system. Depending on the scale being viewed; data from one of these datasets will be returned: Source Data Source Native Pixel Size Approximate Pixel Size (m) Primary Sources England 2m 2 meters 2 Environment Agency Wales 2m 2 meters 2 Natural Resources Wales Netherlands 3m 3 meters 3 Rijkswaterstaat Austria 10m 10 meters 10 Geoland Denmark 3m 3.2 meters 3 Geodatastyrelsen Denmark 10m 10 meters 10 Geodatastyrelsen Finland 3m 3 meters 3 NLS Finland 10m 10 meters 10 NLS Norway 10m 10 meters 10 NMA OS Terrain 50 50 meters 50 Ordnance Survey FEMA LiDAR DTM 3 meters 3 FEMA NED 1/9 arc second 0.000030864197530866 degrees 3 USGS NED 1/3 arc second 0.000092592592593 degrees 10 USGS NED 1 arc second 0.0002777777777779 degrees 31 USGS NED 2 arc second 0.000555555555556 degrees 62 USGS SRTM 1 arc second 0.0002777777777779 degrees 31 NASA SRTM 1 arc second DEM-S 0.0002777777777779 degrees 31 Geoscience Australia SRTM v4.1 0.00083333333333333 degrees 93 CGIAR-CSI EarthEnv-DEM90 0.00083333333333333 degrees 93 N Robinson,NCEAS GMTED2010 7.5 arc second 0.00208333333333333 degrees 232 USGS GMTED2010 15 arc second 0.00416666666666666 degrees 464 USGS GMTED2010 30 arc second 0.0083333333333333 degrees 928 USGS Data Coverage: To see the coverage of various datasets comprising this service, click here . Accuracy: The accuracy of these services will vary as a function of location and data source. Please refer to the metadata available in the services, and follow the links to the original sources for further details. An estimate of CE90 and LE90 is included as attributes. For more information on this service, including the terms of use, visit us online .