Ocean and Polar Research

  • 제37권2호
  • /
  • Pages.107-117
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  • 2015
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  • 1598-141X(pISSN)
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  • 2234-7313(eISSN)
한국해양과학기술원 (Korea Institute of Ocean Science & Technology)
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동해 남서부 해역의 대륙사면에서 Thorpe 규모(scale)를 이용한 연직 난류 확산계수 추정

Thorpe Scale Analysis using CTD Observations on the Continental Slope of the Southwestern East Sea

  • 서성봉 (한국해양과학기술원 물리연구본부) ;
  • 박영규 (한국해양과학기술원 물리연구본부) ;
  • 박재훈 (한국해양과학기술원 물리연구본부) ;
  • 정희동 (국립수산과학원 동해수산연구소 자원환경과)
  • 투고 : 2014.12.29
  • 심사 : 2015.06.18
  • 발행 : 2015.06.30
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초록

Thorpe scale analysis was performed using two sets of 25-hour-long hourly CTD data. Raw density profiles collected on the continental slope of the southwestern East Sea were post-processed to reduce instrument noises and measurement errors. Density inversions were detected by applying the overturn ratio test proposed by Gargett and Garner (2008). The value of $K_z$ below the main thermocline estimated with the Osborn parameterization was $5.3{\times}10^{-4}(1.1{\times}10^{-4})m^2s^{-1}$ and that with the Shih parameterization was $5.9{\times}10^{-5}(2.4{\times}10^{-5})m^2s^{-1}$during the spring (neap) tidal period. This result suggests that internal tides can enhance vertical mixing in the observation region.

키워드

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