Origin of outer shelf water in the East China Sea
Water mass properties in cross sections of the Kuroshio in the East China Sea (ECS) are investigated in details.We used temperature,salinity and dissolved oxygen data obtained in the cruises in autumn of 2000 and 2002,and historical temperature and salinity data along PN section from 1987 to 2004.The T/S and T/DO diagrams divided the water masses into two groups – with high and low salinity or oxygen.We found the existence of typical outer shelf water (OSW),defined by clear modes in frequency distributions of salinity and oxygen in various temperature segments.The outer shelf water was different from both Kuroshio Tropical Water (KTW) and coastal water.We mapped horizontal and vertical distributions of OSW along with KTW.The OSW was found with density σ t = 22.5 to 25.5 over a relatively broad area,from the outer continental shelf to the continental slope,particularly in autumn.The vertical distribution of the water suggests that the OSW spreads from the outer shelf to just the shelf side of the velocity maximum of the Kuroshio.Comparing with T-S diagram east of Taiwan and Taiwan Strait,the OSW would be originated from South China Sea Tropical Water (SCSTW) as suggested by Chen (2005).Present study in the ECS clearly shows that SCSTW is transported along the east coast of Taiwan or through the Taiwan Strait into the ECS,then spreads over relatively wide area from the outer shelf to just shelf side of the Kuroshio axis.
East China Sea outer shelf water Kuroshio South China Sea Water
Shigefumi Yanao Takeshi Matsuno
Department of Earth System Science and Technology, Kyushu University, Kasuga, Japan, 816-8580 Research Institute for Applied Mechanics, Kyushu University, Kasuga, Japan, 816-8580
国际会议
The 17th Pacific -Asian Marginal Seas Meeting(第十七届太平洋与亚洲边缘海国际会议)
杭州
英文
974-979
2013-04-23（万方平台首次上网日期，不代表论文的发表时间）