Shaded relief in grey scale: 100 m raster, 50 m raster, 10 m raster

Iceberg plough marks are formed by icebergs scraping along the bottom of the sea as they drift with wind and stream. The plough marks appears on the terrain form maps as stripes in different directions.

Official web processing services from the Norwegian Mapping Authority The service contains four operations: * The elevation process returns the elevation and place name of a given point in a given coordinate system. The elevation is calculated by interpolation in a 1m network of isometric lines in populated areas (with FKB coverage), and in a 20m network in other areas. It also returns the depth if the given point is in the ocean and close to the coast. The depth is calculated by interpolation in a 10m network of isometric lines (2 to 5 meters in shallow water close to the coast). This data is not to be used for navigational purposes. * The elevationXML process returns a terrain and height profile in the form of a series of XML-encoded data points. * The elevationChart process returns a terrain and height profile in the form of a chart (png image file). * The elevationJSON process returns a terrain and height profile in the form of a series of JSON-encoded data points. It is calculated by interpolation in a 1m network of isometric lines in populated areas (with FKB coverage), and in a 20m network in other areas.

The data set shows the landscape classification in the sea areas. In our mapping, landscape is defined as "large geographical areas with a visually homogeneous character”. Marine landscape mapping describes the major features of the topography on the seabed. We use an automated GIS classification following the definitions of Naturtyper i Norge (NiN, Nature types in Norway). The classification is based on bathymetry of 50 meters resolution.

The data set shows different landforms on the seabed on the Norwegian continental shelf and in the fjords. Examples of seabed landforms are channels, canyons, sediment waves, areas with sediment waves, glacial lineations, iceberg plough marks, moraines, slide escarpments, slide scars, slide areas, areas with slide deposits, submarine fans and areas with pockmarks.