Observations of flow variability through the Kerama Gap

摘要：

　　The Kerama Gp,near the middle of the Ryukyu Island chain,is a ~ 1,000 m deep channel connecting the East China Sea (ECS) to the Northwestern Pacific.We measured the flow through the Kerama Gap from June 2009 to June 2011.The 2-year mean transport,2.0 ± 0.7 Sv,is into the ECS from the Northwestern Pacific; it contributes about 11% of the mean Kuroshio transport in the ECS at the PN line.Standard deviation of subtidal transport through the Kerama Gap is 3.2 Sv,comparable to the standard deviation of the PN-line Kuroshio transport (4.0 Sv),which suggests a significant effect of Kerama Gap transport on temporal variability of the Kuroshio transport in the ECS.Comparison with time series of satellite-measured sea surface height maps reveals that temporal variability of the Kerama Gap transport is related to the arrival of mesoscale eddies from the east: high (low) transport into the ECS is associated with the presence of a cyclonic (anticyclonic) eddy south of the Kerama Gap.

关键词： Kerama Gap transport Kuroshio East China Sea Northwestern Pacific

作者: Hanna Na Mark Wimbush Jae-Hun Park Hirohiko Nakamura Ayako Nishina

作者单位: Faculty of Science, Hokkaido University, Sapporo, Hokkaido 060-0810, Japan Graduate School of Oceanography, University of Rhode Island, Narragansett, Rhode Island 02882, USA Korea Institute of Ocean Science and Technology, Ansan 426-744, Republic of Korea Faculty of Fisheries, Kagoshima University, Shimoarata, Kagoshima 890-0056, Japan

会议类型: 国际会议

会议名称: The 17th Pacific -Asian Marginal Seas Meeting(第十七届太平洋与亚洲边缘海国际会议)

会议地点: 杭州

会议语种:英文

页码: 44-52

在线出版日期: 2013-04-23（万方平台首次上网日期，不代表论文的发表时间）