International Acoustic Survey on Blue Whiting in the Norwegian Sea, August 1984.
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Six research vessels from the five nations, USSR, Norway, Faroe
Islands, Iceland and GDR participated in the third ICES-coordinated
acoustic survey on blue whiting in the Norwegian Sea and
adjacent waters.
By use of instrument constants obtained from calibration either
against a standard target or with a hydrophone, the integrator
values were standardized and combined.
Blue whiting was recorded over the major part of the Norwegian
Sea on the warmer side of the Polarfront. The highest concentrations
were found in the southern part of the investigated
area, especially off the northern coast of Farce Islands, the
southern coast of Iceland and in a limited area between Iceland
and Greenland. The acoustic estimate resulted in a total biomass of 3.8 mill.
tonnes of blue whiting, which is an increase of 1 mill. tonnes
since August 1983.