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http://dx.doi.org/10.3796/KSFT.2010.46.2.157

Target strength estimation of dominant species in marine ranching ground of Jeju coastal water by KRM model  

Lee, Seung-Jong (Subtropical Fisheries research center, Southwest Sea Fisheries Research Institute, National Fisheries Research and Development Institute)
Lee, Yoo-Won (Division of Marine Production System Management, Pukyong National University)
Kim, Joo-Il (Fisheries Resources Management Division, Southeast Sea Fisheries Research Institute, NFRDI)
Oh, Taeg-Yun (Fisheries Resources Management Division, NFRDI)
Hwang, Bo-Kyu (Research Center for Ocean Industry Development, Pukyong National University)
Kim, Byung-Yeob (Subtropical Fisheries research center, Southwest Sea Fisheries Research Institute, National Fisheries Research and Development Institute)
Lee, Kyoung-Hoon (Fisheries System Engineering Division, NFRDI)
Publication Information
Journal of the Korean Society of Fisheries and Ocean Technology / v.46, no.2, 2010 , pp. 157-163 More about this Journal
Abstract
The indirect target strength (TS) estimation method which uses the Kirchhoff ray mode model (KRM model) was discussed to apply for a biomass estimation in the water of mixed species. TS of 25 live scorpion fishes for 120kHz were measured by a tethered method and of others dominant 5 species in the marine ranching ground of Jeju coastal water including a scorpion fish were also estimated by KRM model. The measurement TS of scorpion fish well agreed with the theoretical values and the standard formula of scorpion fish was estimated as $TS_{120kHz}=20Log\;(L)-72.9$ ($r^2=0.67$). TScm values estimated on trial to each sample of dominant 5 species were from -69.3dB to -75.1dB at 120kHz and they were in the general range of swimbladdered fish. It was clarified that TS by KRM model can be used to estimate fish biomass estimation by increasing a sample number and is more effective under the condition that there is rare TS information for inhabiting species in mixed-species area.
Keywords
Target strength; Dominant species; Kirchhoff ray mode model; Marine ranching ground;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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