Accumulation basins

The map over accumulation basins is based on information about the bottom type sediments (grain size) and bathymetry. The map is useful for fish farmers and others who need information on water quality.
Map Accumulation basins in the Astafjord area (www.ngu.no).

The map reveals the location of accumulation basins, which often occur in areas where the bottom contains fine-grained sediments. These areas are often oxygen poor, and decaying materials emit toxic sulfur gas that could be detrimental for fish farming, while local species of herring may tolerate such conditions.