Acoustic portrait of herring in Vestfjord, january 1996, with geostatistical analysis
In January 1996 the stock of Norwegian spring-spawning herring (Clupea harengus) was acoustically surveyed in the wintering area. Both immature and mature fish were present. Because of the comparative lateness of the survey, the spawning migration had already begun, and the total survey area extende...
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ftimr:oai:imr.brage.unit.no:11250/105625 2023-05-15T18:41:23+02:00 Acoustic portrait of herring in Vestfjord, january 1996, with geostatistical analysis Foote, Kenneth G. Ostrowski, Marek 1996 application/pdf http://hdl.handle.net/11250/105625 eng eng ICES ICES CM Documents;1996/H:31 This report is not to be cited without prior reference to the authors http://hdl.handle.net/11250/105625 12 s. herring sild acoustics akustikk distribution utbredelse stock assessment bestandsberegning VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ethology: 485 VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fish health: 923 Working paper 1996 ftimr 2021-09-23T20:16:12Z In January 1996 the stock of Norwegian spring-spawning herring (Clupea harengus) was acoustically surveyed in the wintering area. Both immature and mature fish were present. Because of the comparative lateness of the survey, the spawning migration had already begun, and the total survey area extended from the inner reaches of Ofotfjord and Tysfjord to the sea area southwest of Vestfjord, well over 200 nautical miles from end to end. Coverage of the Vestfjord area alone occupied three days, thus also including diurnal vertical migration. The evident complex of dynamics is described in two ways: (1) by acoustic images of herring distribution in vertical sections of Vestfjord, and (2) through variograms computed for strata identified by the visual presentation. Speculation is offered on the use of such an analysis in stratification. Report Tysfjord Institute for Marine Research: Brage IMR Tysfjord ENVELOPE(16.374,16.374,68.097,68.097) Vestfjord ENVELOPE(-28.750,-28.750,70.500,70.500) |
institution |
Open Polar |
collection |
Institute for Marine Research: Brage IMR |
op_collection_id |
ftimr |
language |
English |
topic |
herring sild acoustics akustikk distribution utbredelse stock assessment bestandsberegning VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ethology: 485 VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fish health: 923 |
spellingShingle |
herring sild acoustics akustikk distribution utbredelse stock assessment bestandsberegning VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ethology: 485 VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fish health: 923 Foote, Kenneth G. Ostrowski, Marek Acoustic portrait of herring in Vestfjord, january 1996, with geostatistical analysis |
topic_facet |
herring sild acoustics akustikk distribution utbredelse stock assessment bestandsberegning VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ethology: 485 VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fish health: 923 |
description |
In January 1996 the stock of Norwegian spring-spawning herring (Clupea harengus) was acoustically surveyed in the wintering area. Both immature and mature fish were present. Because of the comparative lateness of the survey, the spawning migration had already begun, and the total survey area extended from the inner reaches of Ofotfjord and Tysfjord to the sea area southwest of Vestfjord, well over 200 nautical miles from end to end. Coverage of the Vestfjord area alone occupied three days, thus also including diurnal vertical migration. The evident complex of dynamics is described in two ways: (1) by acoustic images of herring distribution in vertical sections of Vestfjord, and (2) through variograms computed for strata identified by the visual presentation. Speculation is offered on the use of such an analysis in stratification. |
format |
Report |
author |
Foote, Kenneth G. Ostrowski, Marek |
author_facet |
Foote, Kenneth G. Ostrowski, Marek |
author_sort |
Foote, Kenneth G. |
title |
Acoustic portrait of herring in Vestfjord, january 1996, with geostatistical analysis |
title_short |
Acoustic portrait of herring in Vestfjord, january 1996, with geostatistical analysis |
title_full |
Acoustic portrait of herring in Vestfjord, january 1996, with geostatistical analysis |
title_fullStr |
Acoustic portrait of herring in Vestfjord, january 1996, with geostatistical analysis |
title_full_unstemmed |
Acoustic portrait of herring in Vestfjord, january 1996, with geostatistical analysis |
title_sort |
acoustic portrait of herring in vestfjord, january 1996, with geostatistical analysis |
publisher |
ICES |
publishDate |
1996 |
url |
http://hdl.handle.net/11250/105625 |
long_lat |
ENVELOPE(16.374,16.374,68.097,68.097) ENVELOPE(-28.750,-28.750,70.500,70.500) |
geographic |
Tysfjord Vestfjord |
geographic_facet |
Tysfjord Vestfjord |
genre |
Tysfjord |
genre_facet |
Tysfjord |
op_source |
12 s. |
op_relation |
ICES CM Documents;1996/H:31 This report is not to be cited without prior reference to the authors http://hdl.handle.net/11250/105625 |
_version_ |
1766230875388772352 |