Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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Time-series Analysis of Seawater Temperature in the Garolim Bay, the West Coast of Korea

서해 가로림만 수온의 시계열 분석

  • Yang, Joon-Yong (West Sea Fisheries Institute, National Institute of Fisheries Science) ;
  • Cho, Sunghee (West Sea Fisheries Institute, National Institute of Fisheries Science) ;
  • Lee, Joon-Soo (Oceanic Climate & Ecology Research Division, National Institute of Fisheries Science) ;
  • Han, Changhoon (West Sea Fisheries Institute, National Institute of Fisheries Science) ;
  • Heo, Seung (West Sea Fisheries Institute, National Institute of Fisheries Science)
  • 양준용 (국립수산과학원 서해수산연구소 자원환경과) ;
  • 조성희 (국립수산과학원 서해수산연구소 자원환경과) ;
  • 이준수 (국립수산과학원 기후변화연구과) ;
  • 한창훈 (국립수산과학원 서해수산연구소 자원환경과) ;
  • 허승 (국립수산과학원 서해수산연구소 자원환경과)
  • Received : 2021.04.05
  • Accepted : 2021.06.25
  • Published : 2021.07.31
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Abstract

We used seawater temperature data, measured in the Garolim Bay, to analyze temperature variation on an hourly and daily basis. Lagrange's interpolation using before and after data was applied to restore nonconsecutive missing temperature data. The estimated error of the data restoration was 0.11℃. Spectral analyses of seawater temperature showed significant periodicities of approximately 12.4 h (semidiurnal tide) and 15.0 d (long-period tide), which is close to those of M2 and Mf partial tides. Variation in seawater temperature was correlated more with tidal height than with air temperature around the Garolim Bay. In June and December, when the seawater temperature difference between the inside and outside of the Garolim Bay was very large, the periodicities of 12.4 h and 15.0 d were highly prominent. These results indicate that the exchange of seawater between the inside and outside of the Garolim Bay induced variations in seawater temperature owing to tide. Understanding temperature variation because of tide helps to prevent abnormal mortality of cultured fish and to predict seawater temperature in the Garolim Bay.

Keywords

Acknowledgement

이 연구는 국립수산과학원 '서해 연안어업 및 환경생태 조사(R2021033)'의 연구비 지원으로 수행하였습니다. 자료 처리에 도움을 준 서해수산연구소 자원환경과 신규진 연구원과 세심하게 논문을 검토해 주신 심사위원에게 감사드립니다.

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