Browsing Brage IMR by Author "Gorska, Natalia"
Now showing items 1-3 of 3
-
Differences in swimbladder volume between Baltic and Norwegian spring spawning herring: possible consequences for mean target strength
Fässler, Sascha M.M.; Gorska, Natalia; Ona, Egil (ICES CM documents;2007/H:03, Working paper, 2007)Volume and shape of the swimbladder of Baltic and Norwegian spring spawning herring were measured, together with individual herring fat content. Swimbladder size was found to differ significantly between the two herring ... -
Modelling herring target strength pressure dependence in the frequency domain
Gorska, Natalia; Ona, Egil (ICES CM documents, Working paper, 2001)Improved understanding of the acoustic scattering properties of the fish is needed when trying to remove potential bias is acoustic abundance estimates. The paper address the problem of systematic pressure or depth dependency ... -
On acoustic multi-frequency species identification and separation of Atlantic mackerel, Norwegian spring spawn herring and Norway pout.
Gorska, Natalia; Ona, Egil; Korneliussen, Rolf J. (ICES CM documents, Working paper, 2004)The accuracy of the multi-frequency species identification and separation algorithms may be significantly improved when the detailed acoustic scattering characteristics of the fish are known, including its expected variability ...