수산해양기술연구 (Journal of the Korean Society of Fisheries and Ocean Technology)

  • 제48권4호
  • /
  • Pages.487-494
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  • 2012
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  • 2671-9940(pISSN)
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  • 2671-9924(eISSN)
한국수산해양기술학회 (The Korean Society of Fisheries and Ocean Technology)
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Verification and application of Target Strength for Japanese anchovy (Engraulis japonicas) by theoretical acoustic scattering model

  • Hwang, Kangseok (Fisheries Resources Research Division, National Fisheries Research & Development Institute) ;
  • Lee, Kyounghoon (Fisheries System Engineering Division, National Fisheries Research & Development Institute) ;
  • Hwang, Bo-Kyu (Division of Marine Production System Management, Pukyong National University)
  • 투고 : 2012.10.12
  • 심사 : 2012.10.30
  • 발행 : 2012.11.30
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초록

Acoustical backscattering characteristics of Japanese anchovy can be estimated by Kirchhoffray mode model (KRM model) due to estimate exact body and swim-bladder shape of the fish, the samples were rapidly frozen by dry-ice and alcohol. X-ray photos for ventral and lateral direction for 6 samples were taken and the 3D coordinates of the body swim-bladder were estimated by digitizing from the photos. The angles between the axis of body and swim-bladder were about $9^{\circ}$ at 38kHz and $7^{\circ}$ at 120kHz, 200kHz. General formula of TS and BL estimated were < $TS_{38kHz}$ >=20logBL-67.3, < $TS_{120kHz}$ >=20logBL-66.6, < $TS_{200kHz}$ >=20logBL-67.0. As a result, we confirmed KRM model is very useful to estimate TS (Target Strength) for design of experiment and it also can be applied to estimate the abundance of Japanese anchovy distributed by 2 frequency difference method in the survey area.

키워드

과제정보

연구 과제번호 : 수산업의 기후변화에 대한 영향 연구 및 대응 전략

연구 과제 주관 기관 : 국립수산과학원

참고문헌

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피인용 문헌

  1. Visual census and hydro-acoustic survey of demersal fish aggregations in Ulju small scale marine ranching area (MRA), Korea vol.51, pp.1, 2015, https://doi.org/10.3796/KSFT.2015.51.1.016