A numerical modeling of the upper and the intermediate layer circulation in the East Sea SCOPUS

Title
A numerical modeling of the upper and the intermediate layer circulation in the East Sea
Author(s)
Kim C.-H.; Yoon J.-H.
Publication Year
1999
Abstract
Circulation in the upper and the intermediate layer of the East Sea is investigated by using a fine resolution, ocean general circulation model. Proper separation of the East Korean Warm Current from the coast is achieved by adopting the isopycnal mixing, and using the observed heat flux (Hirose et al., 1996) and the realistic wind stress (Na et al., 1992). The simulated surface circulation exhibits a remarkable seasonal variation in the flow patterns of the Nearshore Branch, the East Korean Warm Current and the Cold Currents. East of the Oki Bank, the Nearshore Branch follows the isobath of shelf topography from late winter to spring, while in summer and autumn it meanders offshore. The Nearshore Branch is accompanied by cyclonic and anticyclonic eddies in a fully developed meandering phase. The meandering and the eddy formation of the Nearshore Branch control the interior circulation in the Tsushima Current area. A recirculation gyre is developed in the region of the East Korean Warm Current in spring and grown up to an Ulleung Basin scale in summer. A subsurface water is mixed with the fresh surface water by winter convection in the northeastern coastal region of Korea. The well-mixed low salinity water is transported to the south by the Cold Currents, forming the salinity minimum layer (Intermediate Water) beneath the East Korean Warm Current water. The recirculation gyre redistributes the core water of the salinity minimum layer in the Ulleung Basin.
ISSN
0916-8370
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/6187
DOI
10.1023/A:1007837212219
Bibliographic Citation
Journal of Oceanography, v.55, no.2, pp.327 - 345, 1999
Subject
circulation modeling; marginal sea; oceanic general circulation model; Sea of Japan
Keywords
East Korean Warm Current; Intermediate water; Nearshore branch; Separation of western boundary current; Tsushima Current
Type
Article
Language
English
Document Type
Article
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