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http://dx.doi.org/10.5657/KFAS.2016.0393

Observations of Bottom Currents in the Korea Strait  

Lee, Jae Chul (Department of Oceanography, Pukyong National University)
Kim, Dae Hyun (Oceantech Co.)
Publication Information
Korean Journal of Fisheries and Aquatic Sciences / v.49, no.3, 2016 , pp. 393-403 More about this Journal
Abstract
A steady, strong southward flow was observed in the lower layer beneath the Tsushima Warm Current in the deepest trough of the Korea Strait. Known as the Korea Strait Bottom Cold Water (KSBCW), this bottom current had a mean velocity of 24 cm/s and temperatures below 8–10℃. The direction of the bottom current was highly stable due to the topographic effects of the elongated trough. To determine the path of the southward bottom current, ADCP (Acoustic Doppler Current Profiler) data from 14 stations between 1999 and 2005 were examined. Persistent southward flows with average speeds of 4–10 cm/s were observed at only three places to the north of the strait where the bottom depths were 100–124 m. The collected data suggest a possible course of the southward bottom current along the southeast Korean coast before entering the deep trough of the Strait.
Keywords
Korea Strait; Bottom current; Korea Strait Bottom Cold Water (KSBCW); Tsushima Warm Current; ADCP;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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1 Cho Y-K, Kim K and Kim Y-G. 1997. Structure and dynamics of the cold water in the western channel of the Korea Strait. J Korean Society of Coastal and Ocean Engineers 9, 132-139.
2 Cho Y-K and Kim K. 2000. Branching mechanism of the Tsushima Current in the Korea Strait. J Phys Oceanogr 30, 2788-2797.   DOI
3 Lim DB. 1973. The movement of the cold water in the Korea Strait. J Oceanol Soc Korea 8, 46-52.
4 Lyu SJ and Kim K. 2005. Subinertial to interannual transport variations in the Korea Strait and their possible mechanisms. J Geophys Res 110, C12016, http://dx.doi.org/10.1029/2004JC002651.   DOI
5 Min HS, Kim YH and Kim C-H. 2006. Year-to-year variation of cold waters around the Korea Strait. Ocean Sci J 41, 227-234.   DOI
6 Teague WJ, Jacobs GA, Perkins HT, Book JW, Chang K-I and Suk M-S. 2002. Low-frequency current observations in the Korea/Tsushima Strait. J Phys Oceanogr 32, 1621-1641.   DOI
7 Takikawa T, Yoon J-H and Cho K-D. 2005. The Tsushima Current through Tsushima Straits estimated from ferryboat ADCP data. J Phys Oceanogr 35, 1154-1168.   DOI
8 Park M-J, Lee S-R, Lee JC and Byun S-K. 1999. Tidal and nontidal fluctuations of currents in the western channel of the Korea Strait. J Korean Soc Oceanogr 34, 133-143.
9 Yun J-Y, Magaard L, Kim K, Shin C-W Kim C and Byun S-K. 2004. Spatial and temporal variability of the North Korean Cold Water leading to the near-bottom cold water intrusion in Korea Strait. Progress Oceanography 60, 99-131.   DOI
10 Kim CH and Kim K. 1983. Characteristics and origin of the cold water mass along the east coast of Korea. J Oceanol Soc Korea 18, 73-83.
11 Kim I-N and Lee T. 2004. Physicochemical properties and the origin of summer bottom cold waters in the Korea Strait. Ocean and Polar Research 26, 595-606.   DOI
12 Kim YH and Min HS. 2008. Seasonal and interannual variability of the North Korean cold current in the East Sea reanalysis data. Ocean and Polar Res 30, 21-31.   DOI
13 Isobe A. 1999. On the origin of the Tsushima Warm Current and its variability. Continental Shelf Res 19, 117-133.   DOI
14 Isobe A. 1994. Seasonal variability of the barotropic and baroclinic motion in the Tsushima-Korea Strait. J Oceanogr 50, 223-238.   DOI
15 Johnson DR and Teague WJ. 2002. Observations of the Korea Strait bottom cold water. Continental Shelf Res 22, 821-831.   DOI
16 Rikiishi K and Ichiye T. 1986. Tidal fluctuation of the surface currents of the Kuroshio in the East China Sea. Prog Oceanogr 17, 193-213.   DOI
17 Seung YH. 1986. On the response of coastal water to the intensification of East Korea Warm Current along the east coast of Korea-A theoretical consideration. J Oceanol Soc Korea 21, 229-235.
18 Lee JC, Kim DH and Kim J-C. 2003. Observations of coastal upwelling at Ulsan in summer 1997. J Korean Soc Oceanogr 38, 122-134.6-19.
19 Kim YH, Kim Y-B, Kim K, Chang K-I, Lyu SJ, Cho Y-K and Teague WJ. 2006. Seasonal variation of the Korea Strait Bottom Cold Water and its relation to the bottom current. Geophys Res Lett 33, L24604, http://dx.doi.org/10.1029/2006GL027625.   DOI
20 Lee JC and Na JY. 1985. Structure of upwelling off the southeast coast of Korea. J Oceanol Soc Korea 20,
21 Lee JC. 2011. Upwelling-response of the cold water off Haewundae in summer. J Korean Soc Oceanogr 16, 206-211.
22 Lee JC and Chang K-I. 2014. Variability of the coastal current off Uljin in summer 2006. Ocean and Polar Research 36, 165-177.   DOI
23 Lee JC. 2016. Water mass distribution and currents in the vicinity of the Hupo Bank in summer 2010. Korean J Fish Aquat Sci 49, 61-73.   DOI
24 Lim DB and Chang S. 1969. On the cold water mass in the Korea Strait. J Oceanol Soc Korea 4, 71-82.
25 Kaneko A, Byun S-K, Chang S-D and Takahashi M. 1991. An observation of sectional velocity structures and transport of the Tsushima Current across the Korea Strait. Oceanography of Asian Marginal Seas, Takano K, Ed. Elsevier, 179-195.