Trawl and acoustic survey on herring stocks. Complex oceanographic survey in the Norwegian Sea to develop the long-term co-operation within the framework of ICES. Fish distribution will be investigated with acoustic devices. Check trawlings will be made by mid-water trawl with a mesh size of 16 mm in the bag. Oceanographic observations including water temperature and salinity measurements, as well as hydrochemical investigations, will be carried out at stations of standard hydrographic sections and at trawl stations. Plankton samples will be collected by Juday net.
Alexander I Krysov (Polar Res. Ins. of Mar. Fisheries + Ocean. Russia)
International Council for the Exploration of the Sea (ICES)