Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Target Strength According to Tilt Angle and Length of Black Seabream Acanthopagrus schlegeli at 200 kHz-frequency

감성돔(Acanthopagrus schlegeli)의 유영자세각과 체장에 따른 200 kHz대역 음향산란강도

  • Choi, Jung-Hwa (Fisheries Resources Research Center, National Institute of Fisheries Science) ;
  • Oh, Woo-Seok (Division of Fisheries Science, Chonnam National University) ;
  • Yoon, Euna (Department of Marine Technology, Chonnam National University) ;
  • Im, Yang-Jae (Fisheries Resources Research Center, National Institute of Fisheries Science) ;
  • Lee, Kyounghoon (Department of Marine Technology, Chonnam National University)
  • 최정화 (국립수산과학원 수산자원연구센터) ;
  • 오우석 (전남대학교 수산과학과) ;
  • 윤은아 (전남대학교 해양기술학부) ;
  • 임양재 (국립수산과학원 수산자원연구센터) ;
  • 이경훈 (전남대학교 해양기술학부)
  • Received : 2018.08.06
  • Accepted : 2018.10.02
  • Published : 2018.10.31
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Abstract

This study determined the acoustic target strength (TS; dB) of black seabream Acanthopagrus schlegeli off the southern coast of Korea. For the ex-situ measurements, 200 kHz split beam transducers were used, and a Kirchhoff-ray mode (KRM) model acoustic model was used for the calculation. The fork length and total weight of the black seabream ranged from 6.4 to 30.8 cm and 6.4 to 683.8 g. respectively 200 kHz, the TS could beexpressed as a function of fork length as: $TS_{max}=20log_{10}(FL)-60.35(R=0.92)$ and $TS_{avg.}=20log_{10}(FL)-66.89(R=0.88)$. These TS results for black seabream can be used for estimating the biomass of fish in acoustic surveys in coastal areas.

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References

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