dc.contributor.author | Ona, Egil | |
dc.contributor.author | Toresen, Reidar | |
dc.date.accessioned | 2012-08-02T13:34:55Z | |
dc.date.available | 2012-08-02T13:34:55Z | |
dc.date.issued | 1988 | |
dc.identifier.citation | This report is not to be cited without prior reference to the authors | no_NO |
dc.identifier.uri | http://hdl.handle.net/11250/104424 | |
dc.description.abstract | The reaction of herring during pelagic trawl sampling has been
studied by use of a high-frequency scanning sonar mounted on the
headline of the trawl. The difficulties of obtaining high catch
rates on shallow herring layers by single-vessel trawling are
demonstrated. Propeller-noise avoidance is suggested as the main
reason for the low fish density observed behind the trawling
vessel. Minor adjustments in trawling technique to improve catch
efficiency are suggested. | no_NO |
dc.language.iso | eng | no_NO |
dc.publisher | ICES | no_NO |
dc.relation.ispartofseries | ICES CM Documents;1988/B:36 | |
dc.subject | trawl | no_NO |
dc.subject | trål | no_NO |
dc.subject | herring | no_NO |
dc.subject | sild | no_NO |
dc.subject | sonar | no_NO |
dc.title | Reactions of herring to trawling noise | no_NO |
dc.type | Working paper | no_NO |
dc.subject.nsi | VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fisheries technology: 924 | no_NO |
dc.subject.nsi | VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 | no_NO |
dc.source.pagenumber | 8 s. | no_NO |