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KRM 모델을 이용한 전갱이의 다주파수 음향산란특성 KCI 등재

Multifrequency acoustic scattering characteristics of jack mackerel by KRM model

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수산해양기술연구 (Journal of the Korean Society of Fisheries and Ocean Technology)
한국수산해양기술학회(구 한국어업기술학회) (The Korean Society of Fisheriers and Ocean Technology)
초록

This study was focused on acoustic scattering characteristics of jack mackerel (Trachurus japonicus) at frequency 38, 70, and 120 kHz by Kirchhoff-ray mode (KRM) model. The body length (BL) of 16 individuals ranged in 12.2~22.0 cm (mean±S.D.: 17.8±3.2 cm) and the swimbladder length ranged in 4.2~8.6 cm (mean±S.D.: 6.6±1.6 cm) and the swimbladder cross section ranged in 1.7~6.6 cm2 (mean±S.D.: 3.8±1.6 cm2). This result shows that results correlate well between the BL and the length and cross section of swimbladder. The swimbladder angle ranged in 7~12°and the maximum TS values ranged in –16~–5°at tilt angle. The averaged TS-to-BL relationship were TS38kHz=20log10BL-65.33 (R2=0.66), TS70kHz=20log10BL-65.90 (R2=0.67), and TS120kHz=20log10BL-66.65 (R2=0.65). These results can be used fundamental data in order to estimate distribution and biomass of jack mackerel by using hydro-acoustic method.

저자
  • 황강석 | Kangseok HWANG
  • 윤은아(국립수산과학원 자원관리과) | Eun-A YOON (Fisheries Resource Research Division, Nataional Fisheries Research & Development Institute, Busan 619-705, Korea) Corresponding author
  • 이경훈(국립수산과학원 자원관리과) | Kyounghoon LEE (Fisheries Resource Research Division, Nataional Fisheries Research & Development Institute, Busan 619-705, Korea)
  • 이형빈 | Hyungbeen LEE
  • 황두진(국립수산과학원 자원관리과) | Doo-Jin HWANG (Fisheries Resource Research Division, Nataional Fisheries Research & Development Institute, Busan 619-705, Korea)