수산해양기술연구(구 韓國漁業技術學會誌) 53권 4호 (p.413-422)

해양플랜트 작업환경이 어류분포에 미치는 영향

Effects of off-shore plant operating condition on fish distribution
키워드 :
Drilling rig,Underwater radiated noise,Irradiance distribution of light,Fishes distribution,Fishery management

목차

서 론
장치 및 방법
  해양플랜트
  수중소음
  수중조도
  어획조사 및 무인잠수정 (ROV) 관측자료
결과 및 고찰
  시추선 주변의 수중소음
  시추선 주변의 조도
  시추선 주변의 어류분포 특성
결 론
사 사
References

초록

The objective of this study was to prove possible effects of a habitable place for fish around semi-submersible drilling rig which measured underwater radiated noise, irradiance distribution of rig's light and conducted experimental fishing in Malaysia territory and observed for distribution of fishes around the rig by ROV during drilling operation in the East Sea of Korea. As a result underwater radiated noise was 130 dB/μPa from 156.25 to 187.50 Hz, irradiance distribution of light was between 21.5 and 43.1 lx. Despite this result, underwater radiated noise was not a threat to fish around rig and low irradiance distribution of light also played a role in the luring influence of the fishes at night. Fish showed up in the beginning of drilling operation and at the end of drilling operation. However, there are few fish in the midst of drilling operation. The main reason for this result was the destruction of the habitable place due to blow out mud and broken pieces of ground formation in drilling hole. The results are expected to contribute to reasonable fishery management around rig.