Title :
A towed dual-frequency hydroacoustic fish assessment system
Author :
Acker, W.C. ; Lewis, Harold W. ; Brune, F.A. ; Thome, R.E.
Abstract :
A towed hydroacoustic system that provides rapid and precise estimates of pelagic (mid-water) fish stock abundance has been developed at the University of Washington. The system is self-contained, and therefore suitable for use on "ships of opportunity." It has been used to assess pelagic fish as part of the Coastal Upwelling Ecosystems Analysis program sponsored by the National Science Foundation.
Keywords :
aquaculture; oceanographic techniques; seawater; underwater sound; National Science Foundation; coastal upwelling ecosystems analysis program; midwater fish stock abundance; pelagic fish stock abundance; ships of opportunity; towed dual frequency hydroacoustic fish assessment system; towed hydroacoustic system; Acoustic pulses; Aquaculture; Coaxial cables; Filters; Instruments; Laboratories; Marine animals; Marine vehicles; Sea measurements; Winches;
Conference_Titel :
OCEAN 75 Conference
Conference_Location :
San Diego, CA
DOI :
10.1109/OCEANS.1975.1154036
