ELECTRONIC ATLAS OF TYPICAL ACOUSTIC IMAGES FOR COMMERCIAL FISH SPECIES IN THE FAR-EASTERN SEAS OF RUSSIA

Abstract

The first version of the software is developed for presentation of metaarchive and library of typical acoustic images of marine organisms for their size and species identification on echograms. It displays certain typical acoustic images of commercial fishes in the Far- Eastern Seas and their descriptions as electronic atlas and allows to choose a typical acoustic image by area (using its coordinates and/or name of fishery district), time of day, season, and object (species and size). For this atlas, the echograms of different fish species from the Bering, Chukchi, Okhotsk Seas and adjacent Pacific waters accompanied with the data on location, time, and results of trawling were accumulated since 1996. The options «Filter», «Echogram parameters», «Trawling parameters», «List of echograms», «Catch», «Size composition», «Maturity», and «Echogram image» are presented on the window of this atlas. The «Filter» limits the area of echograms search by coordinates, borders of fishery district, time of day, season, species and size of fish. The «Echogram parameters» allows to select the echogram palette suitable for the type of echosounder and gives information on time and distance of the record. The atlas could be applied in trawl-acoustic surveys and for maintenance of fisheries in the Far-Eastern Seas, as well as a guide for work with scientific and fishery sonar devices.

Keywords

• echogram
• fish species
• far-eastern seas
• fishery
• database
• metadata archive
• acoustic image
• selection parameters
• species identification
• fish stock assessment