Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Biomass Estimate of Euphausiids Euphausia sp. Using the Two-frequency Difference Method

2주파수차 분석 기술을 이용한 난바다곤쟁이류(Euphausia sp.)의 현존량 추정

  • Kim, Pyungkwan (Fisheries Engineering Division, National Institute of Fisheries Science) ;
  • Han, Inwoo (Division of Fisheries Science, Chonnam National University) ;
  • Oh, Wooseok (Division of Fisheries Science, Chonnam National University) ;
  • Choi, Yong-Min (Cetacean Research Institute, National Institute of Fisheries Science) ;
  • Yoon, Seokhyun (Ocean Climate & Ecology Division, National Institute of Fisheries Science) ;
  • Lee, Hyungbeen (West Sea Fisheries Research Institute, National Institute of Fisheries Science) ;
  • Lee, Kyounghoon (Department of Marine Technology, Chonnam National University)
  • 김병관 (국립수산과학원 수산공학과) ;
  • 한인우 (전남대학교 수산과학과) ;
  • 오우석 (전남대학교 수산과학과) ;
  • 최영민 (국립수산과학원 고래연구센터) ;
  • 윤석현 (국립수산과학원 기후변화연구과) ;
  • 이형빈 (서해수산연구소 자원환경과) ;
  • 이경훈 (전남대학교 해양기술학부)
  • Received : 2018.04.30
  • Accepted : 2018.06.04
  • Published : 2018.06.30
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Abstract

This study was carried out to investigate euphausiid abundance in an acoustic survey from March 2010 to July 2010 to suggest reasonable usage and management of the euphausiid Euphausia pacifica in the coastal area of Guryongpo Pohang. The acoustic data were analyzed by the 2-frequency difference method and the distorted wave born approximation acoustical theoretical model, which is used for organisms of weak target strength with small scatter, such as euphausiid scatter, among other marine organisms. The distribution and monthly density of euphausiids were estimated in the survey area. The results show that the volume back scattering strength frequency difference for euphausiid was 13.91-7.6 dB, and their monthly averag density was $28.2g/m^2$.

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References

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