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dc.contributor.authorOna, Egil
dc.contributor.authorToresen, Reidar
dc.date.accessioned2012-08-02T15:11:51Z
dc.date.available2012-08-02T15:11:51Z
dc.date.issued1988
dc.identifier.citationThis report is not to be cited without prior reference to the authorsno_NO
dc.identifier.urihttp://hdl.handle.net/11250/104478
dc.description.abstractThe behavioural response of a shallow herring layer to a steaming vessel has been studied by the use of a high-resolution scanning sonar technique. When the vessel was completely darkened, no significant reaction important for biomass estimation was observed, either at three or at nine knots speed. With usual deck lights, however, the reaction was severe, and the integrator system strongly underestimated the true herring density.no_NO
dc.language.isoengno_NO
dc.publisherICESno_NO
dc.relation.ispartofseriesICES CM Documents;1988/H:46
dc.subjectherringno_NO
dc.subjectsildno_NO
dc.subjectecho sounderno_NO
dc.subjectekkoloddno_NO
dc.titleAvoidance reactions of herring to a survey vessel, studied by scanning sonarno_NO
dc.typeWorking paperno_NO
dc.subject.nsiVDP::Mathematics and natural science: 400::Zoology and botany: 480::Ethology: 485no_NO
dc.subject.nsiVDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452no_NO
dc.source.pagenumber8 s.no_NO


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