The Water Mass Character Near The Yellow Sea Warm Current Source Region And Its Seasonal Variation

The seasonal distribution of water mass near the Yellow Sea Warm Current source region was discussed in detail by water mass analysis with the data from Korea Ocean Data Center(KODC), HYCOM simulation and Satellite Altimeter, the conclusions are:1) There are seven water masses in the source of Tsushima Warm Current, including the Tsushima Warm Current Water, yellow sea branch of Tsushima Warm Current, yellow sea mixed water, the East china sea mixed water, fresh water of the Changjiang River, South Korea coastal water, yellow sea cold water. The Tsushima warm current water in the southwest of the Cheju Island have a seasonal west intrusion trend, winter the Tsushima warm current water distributes in the whole layer, the intrusion trend gradually weakened and distribution depth gradually increases from spring to summer, the west intrusion of Tsushima warm current increases in autumn, even more than in winter.2) The source of yellow sea branch of Tsushima Warm Current was discussed, the results shows: In summer, Taiwan warm current water which lies above 50m in the source of Tsushima warm current, comes from the north branch of Taiwan warm current continuum. It flows into Tsushima strait through east of Cheju, instead of into yellow sea. The yellow sea branch of Tsushima Warm Current mainly comes from Kuroshio Branch Current west of Kyushu (KBCW) in summer time.