c:/dev/skygeo/src/iso2stac/stac_output_dynamic/catalog.json
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c:/dev/skygeo/src/iso2stac/stac_output_dynamic/collection-norwegian_mapping_authority/collection.json
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c:/dev/skygeo/src/iso2stac/stac_output_dynamic/collection-norwegian_mapping_authority/bbd687d0-d34f-4d95-9e60-27e330e0f76e/bbd687d0-d34f-4d95-9e60-27e330e0f76e.json
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c:/dev/skygeo/src/iso2stac/stac_output_dynamic/collection-norwegian_mapping_authority/collection.json
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The datasets are based on depth data from the Hydrographic Service's primary database. Depth points and shoals have been triangulated to a TIN model (triangulated irregular network), while preserving the positions and depths. The TIN model has also been used to interpolate depth values with a spacing of every 25 meters. The dataset has also been modelled with linear distance weighting, cropped to land and unsurveyed areas, and compiled into regular grids with a resolution of 50m x 50m.  The datasets are based on depth data from the Hydrographic Service's primary database. Depth points and shoals have been triangulated to a TIN model (triangulated irregular network), taking into account both the position and depth. The TIN model has also been used to interpolate depth values with a spacing of every 25 meters. The dataset has also been modelled with linear distance weighting, cropped to land and unsurveyed areas, and compiled into regular grids with a resolution of 50m x 50m.  The depth data from the primary database is of varying quality and resolution. The data for coastal areas is considerably better than further out in the ocean. Generally, local variations will also occur as a consequence of differences in the source of the data. Positioning accuracy varies depending on depth and terrain variations, and on the equipment and methodology which was used during the hydrographic surveys.  Note that varying degrees of interpolation have also been used when generating the datasets.
Høyde Geodata Act Norway Digital Felles datakatalog Base maps Norwegian coastal and near-shore areas Adjacent sea areas sea depth depth data terrain models grid 3D shadow relief ocean sea data nautical charts mapping data Norwegian Hydrographic Service Mareano imageryBaseMapsEarthCover
Regular grids with 50m x 50m resolution which show the terrain variation on the seafloor in Norwegian sea/ocean areas. The grid model was generated by interpolating the original depth data from the primary database of the Norwegian Mapping Authority Hydrographic Service.  Therefore the data has varying quality with regard to the reliability of both the positions and the depths.
Depth data 50m grid