Repeated acoustic surveys on small herring in a fjord area

This paper describes an acoustic survey on small herring in a fjord in Northern Norway which was carried out three times during the same night. The survey speed was 4 knots during two of the survey runs and once 8 knots.The integrator output for each of the surveys showed a variation of less than 10...

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Bibliographic Details
Main Authors: Ona, Egil, Røttingen, Ingolf
Format: Report
Language:English
Published: ICES 1986
Subjects:
acoustics
akustikk
stock assessment
bestandsberegning
VDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497
VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452
Norway
Northern Norway
Online Access:http://hdl.handle.net/11250/104215
Description
Summary:This paper describes an acoustic survey on small herring in a fjord in Northern Norway which was carried out three times during the same night. The survey speed was 4 knots during two of the survey runs and once 8 knots.The integrator output for each of the surveys showed a variation of less than 10% of the mean integrator output.

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