Broad-band target strength functions of 3 freshwater free-swimming fish
International audience In this paper, experimental results on the equivalent backscattering cross-section and target strength (TS) of individual and small monospecific groups, of encaged but freeswimming fish, are given. Three freshwater species are involved in this study : arctic char (Sa/velil1us...
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1995
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ftunivsavoie:oai:HAL:hal-02849501v1 2024-04-14T08:08:04+00:00 Broad-band target strength functions of 3 freshwater free-swimming fish Dziedzic, Albin Chorier, Cécile Dubois, Jean-Paul Vray, Didier Centre Alpin de Recherche sur les Réseaux Trophiques et Ecosystèmes Limniques (CARRTEL) Institut National de la Recherche Agronomique (INRA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry ) Institut National des Sciences Appliquées de Lyon (INSA Lyon) Université de Lyon-Institut National des Sciences Appliquées (INSA) Aberdeen, United Kingdom 1995-06-12 https://hal.inrae.fr/hal-02849501 en eng HAL CCSD hal-02849501 https://hal.inrae.fr/hal-02849501 PRODINRA: 50862 International Symposium on Fisheries and Plankton Acoustics https://hal.inrae.fr/hal-02849501 International Symposium on Fisheries and Plankton Acoustics, Jun 1995, Aberdeen, United Kingdom. 9 p GARDON ACOUSTIQUE [SDV]Life Sciences [q-bio] info:eu-repo/semantics/conferenceObject Conference papers 1995 ftunivsavoie 2024-03-21T17:01:13Z International audience In this paper, experimental results on the equivalent backscattering cross-section and target strength (TS) of individual and small monospecific groups, of encaged but freeswimming fish, are given. Three freshwater species are involved in this study : arctic char (Sa/velil1us a/pil1/1s), roach (RI/ti/us /'lili/us) and perch (Perca jl/lviatilis). The acoustical system is a broad-band sonar system, using a linearly frequency modulated chirp (20 to 140 kHz in 0.5 ms). Il was calibrated using a 60 mm diameter calibration copper sphere. The dependence between the target strength and the weight and frequency (in the range of 50-140 kHz) obtained with least-squares regression methods are presented. Regression coefficients are given with a 3 kHz step width. A positive slope against weight and a slightly negative against frequency of the TS dependence are shown. Il is also shown that these general results change deeply with environmental conditions as illustrated by two experiments on perch. The obtained data demonstrate also that the averaging over a broad frequency range makes measurements more independent of the fluctuations in the target's response and less sensitive to external parameters. Conference Object Arctic Université Savoie Mont Blanc: HAL Arctic |
institution |
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collection |
Université Savoie Mont Blanc: HAL |
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ftunivsavoie |
language |
English |
topic |
GARDON ACOUSTIQUE [SDV]Life Sciences [q-bio] |
spellingShingle |
GARDON ACOUSTIQUE [SDV]Life Sciences [q-bio] Dziedzic, Albin Chorier, Cécile Dubois, Jean-Paul Vray, Didier Broad-band target strength functions of 3 freshwater free-swimming fish |
topic_facet |
GARDON ACOUSTIQUE [SDV]Life Sciences [q-bio] |
description |
International audience In this paper, experimental results on the equivalent backscattering cross-section and target strength (TS) of individual and small monospecific groups, of encaged but freeswimming fish, are given. Three freshwater species are involved in this study : arctic char (Sa/velil1us a/pil1/1s), roach (RI/ti/us /'lili/us) and perch (Perca jl/lviatilis). The acoustical system is a broad-band sonar system, using a linearly frequency modulated chirp (20 to 140 kHz in 0.5 ms). Il was calibrated using a 60 mm diameter calibration copper sphere. The dependence between the target strength and the weight and frequency (in the range of 50-140 kHz) obtained with least-squares regression methods are presented. Regression coefficients are given with a 3 kHz step width. A positive slope against weight and a slightly negative against frequency of the TS dependence are shown. Il is also shown that these general results change deeply with environmental conditions as illustrated by two experiments on perch. The obtained data demonstrate also that the averaging over a broad frequency range makes measurements more independent of the fluctuations in the target's response and less sensitive to external parameters. |
author2 |
Centre Alpin de Recherche sur les Réseaux Trophiques et Ecosystèmes Limniques (CARRTEL) Institut National de la Recherche Agronomique (INRA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry ) Institut National des Sciences Appliquées de Lyon (INSA Lyon) Université de Lyon-Institut National des Sciences Appliquées (INSA) |
format |
Conference Object |
author |
Dziedzic, Albin Chorier, Cécile Dubois, Jean-Paul Vray, Didier |
author_facet |
Dziedzic, Albin Chorier, Cécile Dubois, Jean-Paul Vray, Didier |
author_sort |
Dziedzic, Albin |
title |
Broad-band target strength functions of 3 freshwater free-swimming fish |
title_short |
Broad-band target strength functions of 3 freshwater free-swimming fish |
title_full |
Broad-band target strength functions of 3 freshwater free-swimming fish |
title_fullStr |
Broad-band target strength functions of 3 freshwater free-swimming fish |
title_full_unstemmed |
Broad-band target strength functions of 3 freshwater free-swimming fish |
title_sort |
broad-band target strength functions of 3 freshwater free-swimming fish |
publisher |
HAL CCSD |
publishDate |
1995 |
url |
https://hal.inrae.fr/hal-02849501 |
op_coverage |
Aberdeen, United Kingdom |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
International Symposium on Fisheries and Plankton Acoustics https://hal.inrae.fr/hal-02849501 International Symposium on Fisheries and Plankton Acoustics, Jun 1995, Aberdeen, United Kingdom. 9 p |
op_relation |
hal-02849501 https://hal.inrae.fr/hal-02849501 PRODINRA: 50862 |
_version_ |
1796305496806785024 |