Detection and counting of individual free-swimming krill using a 2MHz scanning sonar

The euphausiid crustacean Meganyctiphanes norvegica (M. Sars) have been detected and counted in the scanning section of a 2 MHz scanning sonar beam up to 3 meters from the sonar head. The tests completes a pilot investigation on equipment needed to study krill behaviour in relation to sampling gears...

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Bibliographic Details
Main Authors: Ona, Egil, Knutsen, Tor
Format: Report
Language:English
Published: ICES 1992
Subjects:
krill
redskapsforsøk
gear experiments
sonar
VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fisheries technology: 924
VDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497
Meganyctiphanes norvegica
Online Access:http://hdl.handle.net/11250/104984
Description
Summary:The euphausiid crustacean Meganyctiphanes norvegica (M. Sars) have been detected and counted in the scanning section of a 2 MHz scanning sonar beam up to 3 meters from the sonar head. The tests completes a pilot investigation on equipment needed to study krill behaviour in relation to sampling gears used for biomass estimation of euphausiids.

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