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GEBCO_2019 Grid source data types

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DescriptionSource data type information for the data sets used in the generation of the GEBCO_2019 Grid.
CreatorBritish Oceanographic Data Centre
Version Info2
Identifier GGB
Register Manager British Oceanographic Data Centre
Register Owner British Oceanographic Data Centre
Identifier PrefLabel Definition Date
GGB-8888 GEBCO_2019_source_data_type_-8888 Land elevation. 2019-03-15
GGB0 GEBCO_2019_source_data_type_0 Predicted based on satellite-derived gravity data - depth value is an interpolated value guided by satellite-derived gravity data (from the SRTM15_plus data set, 2019-03-15
GGB10 GEBCO_2019_source_data_type_10 Singlebeam - depth value collected by a single beam echo-sounder. 2019-03-15
GGB11 GEBCO_2019_source_data_type_11 Multibeam - depth value collected by a multibeam echo-sounder. 2019-03-15
GGB13 GEBCO_2019_source_data_type_13 Isolated sounding - depth value that is not part of a regular survey or trackline. 2019-03-15
GGB14 GEBCO_2019_source_data_type_14 ENC sounding - depth value extracted from an Electronic Navigation Chart (ENC). 2019-03-15
GGB15 GEBCO_2019_source_data_type_15 Interpolated based on a computer algorithm - depth value is an interpolated value based on a computer algorithm. 2019-03-15
GGB16 GEBCO_2019_source_data_type_16 Digital bathymetric contours from charts - depth value taken from a bathymetric contour data set. 2019-03-15
GGB17 GEBCO_2019_source_data_type_17 Digital bathymetric contours from ENCs - depth value taken from bathymetric contours from an Electronic Navigation Chart (ENC). 2019-03-15
GGB18 GEBCO_2019_source_data_type_18 Pre-generated grid - depth value is taken from a pre-generated grid that is based on mixed source data types, e.g. single beam, multibeam, interpolation etc. 2019-03-15
GGB19 GEBCO_2019_source_data_type_19 Unknown source - depth value from an unknown source. 2019-03-15
GGB20 GEBCO_2019_source_data_type_20 Steering points - depth value used to constrain the grid in areas of poor data coverage. 2019-03-15
GGB21 GEBCO_2019_source_data_type_21 LiDAR - depth derived from a bathymetric LiDAR sensor. 2019-03-15
GGB22 GEBCO_2019_source_data_type_22 Bathymetric sounding - depth value at this location is constrained by bathymetric sounding(s) from the SRTM15_plus data set ( 2019-03-15
GGB23 GEBCO_2019_source_data_type_23 Pre-generated grid - depth value is based on the GEBCO_08 Grid. This data set is a global grid at 30 arc-seconds. It was largely generated from a data base of ship-track soundings with interpolation between soundings guided by satellite-derived gravity data. 2019-03-26