The purpose of this data set is to provide an indication of which type of sediment can be expected on the bottom and the distribution of sediments on the seabed.

The bottom type is of great importance in many aspects. The distribution of sediments on the bottom is closely linked to the physical conditions and tells about the submarine landscape, bottom currents, wave-wash and sedimentary processes.

The level of detail in the data set indicates use within the map scale: 1: 5,000 to 1: 50,000

Detaljnivået på datasettet tilsier bruk innenfor kartmålestokken: 1:5 000 - 1:50 000.

Sediment samples are obtained during hydrographic surveys in fjords and costal areas of Norway over many years. There might occur some uncertainties in Geographic accuracy of sampling locations and geological information.

Data points in the data set are digitized from analogue charts by the Mapping Authority. The Geological Survey of Norway (NGU) has further processed the data by entering new attribute fields, where the original bottom type and other information are described with SOSI standard codes.

ISO19115

2003