Access to detailed bathymetric maps is as important to seabed mapping as detailed topographic maps are for terrestrial mapping. NGU extensively uses bathymetric data when mapping the seafloor.
Bathymetric data from inner Oslo fjord combined here with topographic data from land. Data source: The Norwegian Mapping Authority and NGU.

Detailed bathymetric maps are the basis for the mapping of the ocean areas, whether it be the fjords, along the coast or on the continental shelf. Detailed bathymetric data allow us to see land forms on the sea floor, which leads to more accurate interpretations of what the sea bottom is made of and how it is formed.

For fishermen who use equipment that makes close contact with the seafloor, NGU's detailed bathymetric map may help mitigate damage to such equipment and to the environment, as well as reducing fuel consumption and saving time. Good bathymetric data is also essential for developing management plans and for assessing the feasibility of infrastructure on the seafloor.

NGU obtains detailed bathymetric data through the Norwegian Mapping Authority and other agencies, but a multibeam echosounder is also installed on board the vessel FF Seisma, for collecting our own data.

Relaterte prosjekter

MAREANO maps the bathymetry, seafloor conditions, biodiversity, geodiversity and sedimentary contamination along the Norwegian coast and sea areas.