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

  • 제52권2호
  • /
  • Pages.111-120
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  • 2016
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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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춘계와 동계에 남해안 멸치어군의 주파수 반응 특성

Frequency responses of anchovy schools in the South Sea of South Korea in spring and winter

  • 박준성 (경상대학교 해양경찰시스템학과 / 해양산업연구소) ;
  • 서영일 (국립수산과학원 연근해자원과) ;
  • 장충식 (경상대학교 해양경찰시스템학과 / 해양산업연구소) ;
  • 박병수 (경상대학교 해양경찰시스템학과 / 해양산업연구소) ;
  • 박상식 (경상대학교 해양경찰시스템학과 / 해양산업연구소) ;
  • 안영수 (경상대학교 해양경찰시스템학과 / 해양산업연구소) ;
  • 박준수 (경상대학교 해양경찰시스템학과 / 국립수산과학원 남동해연구소) ;
  • 강명희 (경상대학교 해양경찰시스템학과 / 해양산업연구소)
  • PARK, Junseong (Department of Maritime Police and Production System / The institute of Marine Industry, Gyeongsang National University) ;
  • SEO, Young-Il (Coastal Water Fisheries Resources Research Division, National Institute of Fisheries Science) ;
  • JANG, Choong-Sik (Department of Maritime Police and Production System / The institute of Marine Industry, Gyeongsang National University) ;
  • PARK, Byung-Soo (Department of Maritime Police and Production System / The institute of Marine Industry, Gyeongsang National University) ;
  • PARK, Sang-Sik (Department of Maritime Police and Production System / The institute of Marine Industry, Gyeongsang National University) ;
  • AN, Young-Su (Department of Maritime Police and Production System / The institute of Marine Industry, Gyeongsang National University) ;
  • PARK, Junsu (Department of Maritime Police and Production System, Gyeongsang National University / Southeast Fisheries Research Institute, National Institute of Fisheries Science) ;
  • KANG, Myounghee (Department of Maritime Police and Production System / The institute of Marine Industry, Gyeongsang National University)
  • 투고 : 2016.03.17
  • 심사 : 2016.05.20
  • 발행 : 2016.05.31
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초록

Acoustic surveys using a scientific echosounder and trawl surveys were concurrently carried out in between Geoje and Tongyeong of the South Sea by season. The anchovy schools were identified by trawling in each station and used for frequency response analysis. Frequency responses of anchovy schools by season and species composition ratio were examined using multi-frequencies (18, 38, 70, 120 and 200 kHz). The frequency response r(f), is one of the acoustic characteristics which means the volume back-scattering strength ratio between a reference frequency and other frequencies. In spring, the r(f) of anchovy schools decreased with increased frequency, with the exception of 120kHz. While, in winter, the r(f) continuously decreased inversely proportional to the increase in frequency. Frequency response of anchovy schools presented a distinctive difference between spring and winter, however it did not different in spife of different species composition ratios in schools.

키워드

참고문헌

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