Tidal Dynamics in the Strong Tidal Current Environment of the Uldolmok Waterway, Southwestern Tip Off the Korean Peninsula SCIE SCOPUS KCI

Cited 9 time in WEB OF SCIENCE Cited 9 time in Scopus
Title
Tidal Dynamics in the Strong Tidal Current Environment of the Uldolmok Waterway, Southwestern Tip Off the Korean Peninsula
Author(s)
Kang, Sok Kuh; Jung, Kyung Tae; Yum, Ki-Dai; Lee, Kwang-Soo; Park, Jin-Soon; Kim, Eun Jin
KIOST Author(s)
Kim, Eun Jin(김은진)
Publication Year
2012-12
Abstract
Uldolmok waterway, located between an island off the southwestern tip of Korean peninsula and mainland, is famous for its strong tidal current that has a maximum current of about 6.0m/s. A series of field observations along with numerical modeling have been carried out in order to understand the tidal dynamics in terms of the force balance along the whole waterway and the energy balance in the narrowest part of the waterway. First, analysis of the ADCP current and the tide level variation data reveals that the tidal dynamics along the total waterway (channel) is balanced dominantly between the pressure gradient and linear bottom frictional forces, with the phase lag of sea level difference for the semi-diurnal constituents leading the current phase about by 10. Secondly, the result of the numerical modeling reveals that the tidal energy flux vector flows toward the narrowest section, indicating that there should be related nonlinear processes. Through the numerical model experiment with multi-components, the convergence of (M-2 + S-2) tidal energy flux of 6.68 x 10(7) Joule/s in the narrow area of the Uldolmok waterway is explained mainly by the energy consumption of 73% through the nonlinear generation of shallow water components and by the bottom frictional energy dissipation of 27%. This reveals that the remarkably strong nonlinear process dominates in the narrowest section of the Uldolmok waterway, compared with other areas, such as Yellow and East China Seas where the total M2 energy flux through the open boundary is balanced in terms of the bottom dissipation (Kang et al. 2003; Choi 1980).
ISSN
1738-5261
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/3405
DOI
10.1007/s12601-012-0041-3
Bibliographic Citation
OCEAN SCIENCE JOURNAL, v.47, no.4, pp.453 - 463, 2012
Publisher
KOREA OCEAN RESEARCH DEVELOPMENT INST
Subject
EAST CHINA SEAS; VARIABILITY; YELLOW
Keywords
tidal dynamics; tidal energy balance; tidal model; Uldolmok waterway
Type
Article
Language
English
Document Type
Article
Publisher
KOREA OCEAN RESEARCH DEVELOPMENT INST
Related Researcher
Research Interests

Rapidly Intensified Typhoon research,Air-sea interaction,in-situ data analysis,급강화 태풍 연구,해양-대기 상호작용,현장관측자료분석

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