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Nonlinear Tidal Characteristics along the Uldolmok Waterway off the Southwestern Tip of the Korean Peninsula
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  • Journal title : Ocean and Polar Research
  • Volume 25, Issue 1,  2003, pp.89-106
  • Publisher : Korea Institute of Ocean Science & Technology
  • DOI : 10.4217/OPR.2003.25.1.089
 Title & Authors
Nonlinear Tidal Characteristics along the Uldolmok Waterway off the Southwestern Tip of the Korean Peninsula
Kang, Sok-Kuh; Yum, Ki-Dai; So, Jae-Kwi; Song, Won-Oh;
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 Abstract
Analyses of tidal observations and a numerical model of the and tides in the Uldolmok waterway located at the southwestern tip of the Korean Peninsula are described. This waterway is well known fer its strong tidal flows of up to more than 10 knots at the narrowest part of the channel. Harmonic analysis of the observed water level at five tidal stations reveals dramatic changes in the amplitude and phase of the shallow water constituents at the station near the narrowest part, while survey results show a decreasing trend in local mean sea levels toward the narrow section. It was also observed that the amplitudes of semi-diurnal constituents, and are diminishing toward the narrowest part of the waterway. Two-dimensional numerical modeling shows that the energy flux is dominated by the component coming from the eastern boundary. The energy is inward from both open boundaries and is transported toward the narrow region of the channel, where it is frictionally dissipated or transferred to other constituents due to a strong non-linear advection effect. It is also shown that the generation is strong around the narrow region, and the abrupt decrease in the M4 amplitude in the region is due to a cancellation of the locally generated M4 with the component propagated from open boundaries. The superposition of both propagated and generated M4 contributions also explains the discontinuity of the M4 phase lag in the region. The tide-induced residual sea level change and the regeneration effect of the tide through interaction with are also examined.
 Keywords
nonlinear tidal phenomena; generation;Uldolmok waterway;numerical modeling;
 Language
English
 Cited by
1.
울돌목 시험조류발전소의 수중소음 특성 연구,고명권;최지웅;이진학;정원무;

한국음향학회지, 2012. vol.31. 8, pp.523-531 crossref(new window)
1.
Acoustic Characteristics of Underwater Noise from Uldolmok Tidal Current Pilot Power Plant, The Journal of the Acoustical Society of Korea, 2012, 31, 8, 523  crossref(new windwow)
2.
Tidal dynamics in the strong tidal current environment of the Uldolmok waterway, southwestern tip off the Korean peninsula, Ocean Science Journal, 2012, 47, 4, 453  crossref(new windwow)
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