International Council for the Exploration of the Sea
Browse
1998_H3.pdf (2.46 MB)

Report of the Study Group on Baltic Acoustic Data

Download (2.46 MB)
report
posted on 1998-01-01, 00:00 authored by ICESICES
Russian and Latvian scientists carried out an acoustic survey aboard RN ,,AtlantNIRO" in Subdivisions 26 and 28 from 12 - 31 October 1997. The integration covered 16419 square nautical miles and the integrated track was 1280 nautical miles. The survey grid and position of the trawl hauls are shown in Figure 3.1.1. The hydroacoustic equipment used was S[MRAD EK-500 echosounder working at 38kHz and the echointegrator system B1-500. The working speed of the vessel was 8 knots, the trawling speed was 4 knots. The integration interval was I Nm. The equipment was calibrated against a standard copper sphere in the vicinity of the Baltiysk harbour in calm \Veather. The vessel has been set by means of 3 anchor lines. The calibration sphere was at the distance of 11,4 m from transducer surface. The integration and hauling were performed during the daytime. RN ,,AtlantNIRO" used the mid water trawl RTffM 70/300 with a vertical opening 28 - 32 m and bar length in the codend of 6,5 mm. Totally 60 sample hauls were made

History

Published under the auspices of the following ICES Steering Group or Committee

  • Historical content

Published under the auspices of the following ICES Expert Group or Strategic Initiative

SGBAD

Series

ICES Expert Group Reports

Usage metrics

    ICES Expert Group reports (until 2018)

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC