Aller au contenu principal

    Target strength of Antarctic krill

    Demander un document de réunion
    Numéro du document:
    WG-KRILL-91/13
    Auteur(s):
    R.P. Hewitt and D.A. Demer (USA)
    Point(s) de l'ordre du jour
    Résumé

    In-situ measurements of individual krill target strength are presented (modal value = -69db). Net samples obtained immediately before the experiment indicate that the animals were reproductively mature and averaged 47.44mm in length. Results agree well with recent predictions of acoustic target strength based on extrapolations of other field experiments using the bent cylinder model of sound scattering by elongated zooplankters. The modal value of the measurements is 6.7dB lower than that predicted by the BIOMASS equation for 47.44mm krill.

    Retour haut de page

    © Copyright - Commission for the Conservation of Antarctic Marine Living Resources 2021, All rights reserved.

    Site by Eighty Options