Sedimentary environment describes processes that presently influence the seabed with respect to erosion, sediment transport and sediment deposition. The dataset series comprise two datasets: Sedimentary environment, detailed, and Sedimentary environment, regional. The two individual datasets are digitized in different scales and have different data coverage.

Hydrographic survey data is the most detailed depth data that the Norwegian Mapping Authority, Hydrographic Service has. This data has been collected by mapping the seabed in Norwegian coastal and sea areas. Detailed depth data for large areas of the coast has been gathered using multibeam echo sounders. Only older surveys with less detailed resolution are available for other areas. Older data is being replaced regularly as new data is collected. Hydrographic survey data includes several types of depth information. The main products are point data with position and depth (.xyz), in addition to log data (.all). For more recent surveys, log data containing backscatter information and water column data (.wcd) is also available.

Seabed sediments (grain size) show the grain size composition in the upper part (upper 0-50 cm) of the seabed. The dataset series comprise three datasets: Seabed sediments (grain size), overview, Seabed sediments (grain size), regional and Seabed sediments (grain size), detailed. The three individual datasets are digitized in different scales and have different data coverage.

Seabed sediments and sedimentary environment. The map service presents the grain size composition, relative hardness and the genesis of the of the seabed sediments in Norwegian marine areas. The thickness of Quaternary sediments on the Norwegian Shelf and the thickness of the Holocene sediments in the Skagerrak are also presented.

This data set contains the distribution of seabed sediments classified after genesis in mapped areas on the Norwegian shelf. The superficial deposit surface type describes the superficial deposits genesis. The data is based on the contents of the Quaternary map which are analogous (scale 1: 250,000 to 1: 500,000), or based on digital data from modern surveying.