Grain size composition of the seabed sediments in the Norwegian coastal areas. Detailed interpretation based on large scale mapping and high resolution field data.

The map is based on grain size distribution and indicates how easy it would be to dig into the sea floor, and how stable the dugout depression would be.

The map service presents a number of thematic layers derived from detailed basis information about the seabed: depth and sediment composition. The following themes are visualized: Bathymetry (terrain), Slope, Anchoring, Diggability, Accumulation basins and Habitats.

Slope is one of the terrain parameters derived from depth data. Slope shows where there are steep slopes or flat fjord bottom. Slope is presented in five steepness classes measured in degrees.

Data coverage of marine base maps.

The map service presents a number of thematic layers derived from detailed basis information about the seabed: depth and sediment composition. The following themes are visualized: Bathymetry (terrain), Slope, Anchoring, Diggability, Accumulation basins and Habitats.

Depth contours and detailed shaded relief images of submarine landscapes with indication of depth. Different grid sizes available for different areas (50m, 10m and 2m)

Accumulation basins are the natural depressions on the sea floor with very weak bottom currents and prevailingly fine grained sediments. The renewal of bottom water in natural depressions on the seafloor my be so slow, that input of extra organic matter (f.ex. from fish farms) may result in reducing conditions.

The map service presents a number of thematic layers derived from detailed basis information about the seabed: depth and sediment composition. The following themes are visualized: Bathymetry (terrain), Slope, Anchoring, Diggability, Accumulation basins and Habitats.