Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Study of Acoustic Characteristics of Common Dolphins Delphinus delphis in the East Sea

동해 참돌고래(Delphinus delphis)의 음향학적 특성 연구

  • Yoon, Young Geul (Cetacean Research Institute, National Institute of Fisheries Science) ;
  • Sohn, Hawsun (Cetacean Research Institute, National Institute of Fisheries Science) ;
  • Park, Kyum Joon (Cetacean Research Institute, National Institute of Fisheries Science) ;
  • Choi, Young-Min (Cetacean Research Institute, National Institute of Fisheries Science) ;
  • Kim, Sunhyo (Development of Marine Science and Convergence Engineering, Hanyang University) ;
  • Choi, Jee Woong (Development of Marine Science and Convergence Engineering, Hanyang University)
  • 윤영글 (국립수산과학원 고래연구센터) ;
  • 손호선 (국립수산과학원 고래연구센터) ;
  • 박겸준 (국립수산과학원 고래연구센터) ;
  • 최영민 (국립수산과학원 고래연구센터) ;
  • 김선효 (한양대학교 해양융합공학과) ;
  • 최지웅 (한양대학교 해양융합공학과)
  • Received : 2017.08.04
  • Accepted : 2017.08.23
  • Published : 2017.08.31
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Abstract

Vocalizations of the common dolphin Delphinus Delphis, were recorded from a single hydrophone while coastal visual survey was performed in the East Sea in March 2017. Like most Delphinidae, common dolphins produce whistles, echolocation clicks, and burst-pulsed calls, with repertoires that differ between species and geographically separated populations. This study focuses on using frequency analysis to classify sounds into three categories and to compare them with those of other common dolphin populations. The fundamental frequencies of the whistles were high in the 6 to 14 kHz range, while echolocation clicks were in the 40 to 90 kHz frequency band. These results are similar to high-energy distributions in the same frequency band in other regions. Based on this study of the acoustic characteristics of dolphins off the east coast of Korea, cetacean vocalizations can be classified using a database of cetacean sounds in Korea. In addition, this technique could improve data quality for visual whale surveys and could be applied to various other research subjects.

Keywords

References

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