Journal Article

A consistent approach to definitions and symbols in fisheries acoustics

David N. Maclennan, Paul G. Fernandes and John Dalen

in ICES Journal of Marine Science

Published on behalf of ICES/CIEM

Volume 59, issue 2, pages 365-369
Published in print January 2002 | ISSN: 1054-3139
Published online January 2002 | e-ISSN: 1095-9289 | DOI:
A consistent approach to definitions and symbols in fisheries acoustics

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Long-standing problems with acoustical terminology in fisheries applications such as echo-integration indicate the need for a more consistent approach. Based where possible on existing terms, a scheme of explicitly named quantities is proposed, backed by clearly stated definitions and preferred symbols. The emphasis is on scattering phenomena because the terminology in this area presents the main source of difficulty. Starting with the scattering equations for a small target, the volume, area, and line coefficients relevant to multiple, distributed targets are defined, leading to practical formulas for the important application of remote biomass estimation from echo-integration. The aim is to incorporate, as far as possible, common practice in fisheries-acoustics terminology and related fields. The developed scheme has been commended by the ICES Fisheries Acoustics Science and Technology Working Group as a constructive approach to better communication standards in fisheries-acoustics publications.

Keywords: acoustics; definitions; fisheries; ICES; symbols; sonar; units; WGFAST

Journal Article.  0 words. 

Subjects: Environmental Science ; Marine and Estuarine Biology

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