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dc.contributor.authorOna, Egil
dc.date.accessioned2013-04-04T09:37:45Z
dc.date.available2013-04-04T09:37:45Z
dc.date.issued1988-04
dc.identifier.urihttp://hdl.handle.net/11250/109280
dc.descriptionICES Working Group FAST (WGFAST): Fisheries Acoustics, Science and Technology Working Group (FAST.WG. Oostende, April 20-22, 1988.no_NO
dc.description.abstractObservations made from a stationary echo sounder, passed by a trawling vessel, clearly demonstrate the flight reaction of cod as a response to the noise from the vessel. Horizontal dispersal and downward swimming has been observed to starts as early as 200 m in front of the vessel propeller, and a descent speed of nearly 17 mjmin has been recorded. The avoidance reaction was seen at depths from 50 - 170 m depth, gradually diminising with increasing depth. Similar, but and weaker responses were also observed during general passages without trawl.no_NO
dc.language.isoengno_NO
dc.publisherICESno_NO
dc.subjectcodno_NO
dc.subjecttorskno_NO
dc.subjectacousticsno_NO
dc.subjectakustikkno_NO
dc.subjecttrawlingno_NO
dc.subjecttrålingno_NO
dc.titleObservations of cod reaction to trawling noiseno_NO
dc.typeWorking paperno_NO
dc.subject.nsiVDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fish health: 923no_NO
dc.subject.nsiVDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fisheries technology: 924no_NO
dc.source.pagenumber11 s.no_NO


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