FN Archimer Export Format
PT J
TI Acoustic data collected during and between bottom trawl stations: consistency and common trends
BT 
AF BEZ, Nicolas
   REID, David
   NEVILLE, Suzanna
   VERIN, Yves
   HJELLVIK, Vidar
   GERRITSEN, Hans D.
AS 1:1;2:2;3:3;4:4;5:5;6:6;
FF 1:;2:;3:;4:PDG-DOP-DCMMN-HMMN-RHBL;5:;6:;
C1 Ecole Mines, F-77305 Fontainebleau, France.
   MLA, FRS, Aberdeen AB11 9DB, Scotland.
   CEFAS, Lowestoft Lab, Lowestoft NR33 OHT, Suffolk, England.
   IFREMER, F-62321 Boulogne Sur Mer, France.
   Inst Marine Res, N-5024 Bergen, Norway.
   Queens Univ Belfast, DARDNI, Belfast BT9 5PX, Antrim, North Ireland.
C2 ECOLE MINES, FRANCE
   MLA, UK
   CEFAS, UK
   IFREMER, FRANCE
   INST MAR RES, NORWAY
   QUEENS UNIV BELFAST, NORTH IRELAND
SI BOULOGNE
SE PDG-DOP-DCMMN-HMMN-RHBL
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-europe
IF 2.058
TC 7
UR https://archimer.ifremer.fr/doc/2007/publication-2486.pdf
LA English
DT Article
DE ;gear perturbation;acoustic;Bottom trawl
AB Acoustic data are often collected during bottom trawl surveys. Their use can potentially improve the precision and accuracy of fish abundance estimates if acoustic data collected between trawl stations are consistent with those collected during trawling operations. This question is addressed here through the analysis of 20 bottom trawl surveys (three survey areas and five different survey series) with coincident acoustic measurements during and between trawl stations. Firstly, on-station and underway acoustic data were compared using statistics computed globally over each survey (average vertical profiles, global indices of collocations, and spatial structures) for various combinations of depth layers. Secondly, we focussed on underway acoustic data recorded in the vicinity of stations, distinguishing between data recorded before and after the tows. On-station and underway acoustic data were highly consistent, and no systematic perturbation of the acoustic sign due to the presence of the gear a few hundred metres behind the vessel was observed.
PY 2007
SO Canadian journal of fisheries and aquatic sciences
SN 0706-652X
PU NRC
VL 64
IS 1
UT 000244892500014
BP 166
EP 180
DI 10.1139/F06-174
ID 2486
ER

EF