Authors: JaeHong Moon Naoki Hirose JongHwan Yoon IgChan Pang
Publish Date: 2009/02/01
Volume: 65, Issue: 1, Pages: 17-29
Abstract
Recent investigation suggests that volume transport through the Tsushima/Korea Strait often has double peaks during the summer to autumn period with decreasing transport in September The satelliteobserved wind changes from weak northwestward acrossstrait in summer to strong southwestward alongstrait in early autumn September in the strait Such a strong alongstrait wind is related to tropical cyclones which frequently pass through the East China Sea in September The effect of the alongstrait wind component on the transport variation is examined using a threedimensional numerical model The simulated volume transport through the Tsushima/Korea Strait shows realistic seasonal and intraseasonal variations According to sensitivity experiments on local winds the transport variations in September are mainly generated by strong alongstrait southwestward wind rather than weak acrossstrait wind The strait transport responds to the alongstrait wind southeastward which produces a sea level increase along the Korean coast resulting in the geostrophic balance across the strait The transport minimum through the Tsushima/Korea Strait in September can be determined by the combination of the acrossstrait geostrophic and alongstrait ageostrophic balances
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