On the frequency dependence of target strength of mature herring

dc.contributor.author	Foote, Kenneth G.
dc.contributor.author	Hansen, Kaare A.
dc.contributor.author	Ona, Egil
dc.date.accessioned	2012-08-31T14:58:43Z
dc.date.available	2012-08-31T14:58:43Z
dc.date.issued	1992
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/11250/105020
dc.description.abstract	Mature herring (Clupea harengus), hibernating in Ofotfjord in December 1991, was measured simultaneously at each of three frequencies: 18, 38, and 120 kHz. Measurements of the mean volume backscattering coefficient were integrated over the water column and averaged over 0.1- nautical mile intervals. Through a regression analysis of the resulting values of area backscattering coefficient, performed for pairs of frequencies, the ratio of backscattering cross sections o was determined.	no_NO
dc.language.iso	eng	no_NO
dc.publisher	ICES	no_NO
dc.relation.ispartofseries	ICES CM Documents;1992/B:10
dc.subject	acoustics	no_NO
dc.subject	akustikk	no_NO
dc.subject	gear experiments	no_NO
dc.subject	redskapsforsøk	no_NO
dc.title	On the frequency dependence of target strength of mature herring	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.source.pagenumber	8 s.	no_NO