Journal of the Korean Society of Marine Environment & Safety (해양환경안전학회지)

The Korean Society of Marine Environment and safety (해양환경안전학회)
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Seawater Temperature Variation at Aquafarms off Wando in the Southwest Coast of Korea

완도 양식장 해역의 수온변동

  • Yang, Joon-Yong (Southeast Sea Fisheries Research Institute, National Fisheries Research and Development Institute) ;
  • Lee, Joon-Soo (Fishery and Ocean Information Division, National Fisheries Research and Development Institute) ;
  • Han, In-Sung (Fishery and Ocean Information Division, National Fisheries Research and Development Institute) ;
  • Choi, Yong-Kyu (East Sea Fisheries Research Institute, National Fisheries Research and Development Institute) ;
  • Suh, Young-Sang (Fishery and Ocean Information Division, National Fisheries Research and Development Institute)
  • 양준용 (국립수산과학원 남동해수산연구소) ;
  • 이준수 (국립수산과학원 수산해양종합정보과) ;
  • 한인성 (국립수산과학원 수산해양종합정보과) ;
  • 최용규 (국립수산과학원 동해수산연구소) ;
  • 서영상 (국립수산과학원 수산해양종합정보과)
  • Received : 2012.09.19
  • Accepted : 2012.12.27
  • Published : 2012.12.31
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Abstract

Abalone culture is one of important coastal fisheries off Wando in the southeast coast of Korea. Since cage culture for abalones was popularized, Understanding of temperature variation, which is important to raise abalones and to prevent their mass mortalities, is necessary. We analyzed temperature data from 2005 to 2009 obtained at Sinji-do and Cheongsan-do off Wando. Sinji-do, which is relatively close to land, had yearly wide range of temperature and rate of temperature variation. It is likely to be caused by heating of solar radiation in summer and cooling in winter at the shallow area. Rate of temperature variation in autumn was higher than that in spring. In summer short term variation of temperature corresponding tidal period was distinguished clearly. Diurnal temperature range, abrupt temperature change, was larger open sea. Comparison between temperatures of two stations and favorable raising conditions of abalones showed that Cheongsan-do, located out to sea, appears to be more appropriate than Sinji-do.

전라남도 완도 연안 해역은 전복양식이 중요하고 최근 해상가두리 양식이 보편화되어 전복사육과 폐사에 중요한 수온의 변동을 이해할 필요가 있다. 완도해역에 위치한 신지도, 청산도의 2005년부터 2009년까지 연속자동관측 수온자료를 이용하여 완도 양식장 해역의 수온 변동 특성을 분석하였다. 연안에 가까운 신지도의 연간 수온변동 범위와 수온증가율이 청산도에 비해 크게 나타났으며, 수심이 낮은 연안 해역에서 하계 태양복사열에 의한 가열과 동계의 냉각에 기인한 것으로 판단된다. 또한 추계의 수온 감소율이 춘계의 상승률보다 컸고, 하계에 조석 주기의 단주기 수온변동이 뚜렷하게 나타났다. 급격한 수온변화에 해당하는 큰 수온일교차는 청산도에서 크게 나타났다. 수온 자료로 판단한 전복양식장은 외해에 위치한 청산도가 연안보다 더 적절한 해역으로 판단된다.

Keywords

References

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