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Trial manufacture of dual frequency acoustic pinger to minimize cetacean bycatch

고래류 혼획을 최소화하기 위한 다주파 음향 경고시스템의 시험 제작

  • Lee, Yoo-Won (Department of Marine Production System Engineering, Pukyong National University) ;
  • Shin, Hyeong-Il (Department of Marine Production System Engineering, Pukyong National University) ;
  • Kim, Seok-Jae (Education & Training Division, Korea Institute of Maritime and Fisheries Technology) ;
  • Seo, Du-Ok (Faculty of Ocean Science, Cheju National University) ;
  • Lee, Dae-Jae (Department of Marine Production System Engineering, Pukyong National University) ;
  • Kim, Zang-Geun (Cetacean Research Center, National Fisheries Research and Development Institute) ;
  • Hwang, Doo-Jin (Department of Marine Production Management, Yosu National University)
  • 이유원 (부경대학교 해양생산시스템공학과) ;
  • 신형일 (부경대학교 해양생산시스템공학과) ;
  • 김석재 (한국해양수산연수원 선박운항교육팀) ;
  • 서두옥 (제주대학교 해양과학부) ;
  • 이대재 (부경대학교 해양생산시스템공학과) ;
  • 김장근 (국립수산과학원 고래연구센터) ;
  • 황두진 (여수대학교 해양생산관리학과)
  • Published : 2005.08.31

Abstract

Dual frequency acoustic pinger(AP) was manufactured to reduce study effect by long-term use of developed single frequency AP to prevent cetacean bycatch. Directivity characteristic of transducer was the omnidirectional pattern which showed less than ${\pm}3dB$ the change range of sensitivity on the beam pattern of right and left. Source power level(SPL) was 1384311pa with epoxy window before casing however after casing 1170B11Pa at sea. Dual frequency Af was tested to identify the avoidance behavior of bottlenose dolphin by its working. However the efficiency of dual frequency AP about the study effect was verified experiment repeatedly using single and dual frequency AP.

References

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Cited by

  1. Design and Performance Characteristics of a Broadband Underwater Speaker System vol.44, pp.5, 2011, https://doi.org/10.5657/KFAS.2011.0543