| dc.contributor.author | Misund, Ole Arve | |
| dc.contributor.author | Øvredal, Jan Tore | |
| dc.date.accessioned | 2012-08-02T12:13:54Z | |
| dc.date.available | 2012-08-02T12:13:54Z | |
| 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/11250/104392 | |
| dc.description.abstract | The connections between reflected echo energy and dimensions
of fatty herring schools were studied by a combination of
multibeam sonar and a calibrated echo integration unit. A
relation between the area and the biomass of the schools was
established. A target strength relation was derived by preseining
echo integration and sonar measurments of schools.
Method deficiencies and improvements for school biomass estimation
using sonar and preseining target strength measurements
are discussed. | no_NO |
| dc.language.iso | eng | no_NO |
| dc.publisher | ICES | no_NO |
| dc.relation.ispartofseries | ICES CM Documents;1988/B:26 | |
| dc.subject | acoustics | no_NO |
| dc.subject | akustikk | no_NO |
| dc.subject | herring | no_NO |
| dc.subject | sild | no_NO |
| dc.title | Acoustic measurements of schooling herring. Estimation of school biomass and target strength | 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.subject.nsi | VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921 | no_NO |
| dc.source.pagenumber | 16 s. | no_NO |
