The westward intrusion of south Pacific water at the western tip of the New Guinea Island |
| |
Authors: | KIM Eung JEON Dongchull and Hadikusumah |
| |
Institution: | 1.Ocean Circulation & Climate Research Division, Korea Institute of Ocean Science and Technology, Seoul 426-744, Republic of Korea2.Physical Oceanography Laboratory, Indonesian Institute of Sciences-Research Center for Oceanography, Jakarta 11048, Indonesia |
| |
Abstract: | From the eastern Indonesian cruise from November 14 to 23, 2007, CTD (conductivity, temperature, depth profiler)/ADCP (acoustic Doppler current profiler)casting and seawater sampling were done at 25 stations around Waigeo Island near New Guinea Island. It was found overall westward intrusion of the south Pacific waters into the Seram Sea and southward spreading of the north and south Pacific waters into the Seram Sea. There is westward residual flow along the channel between Waigeo and New Guinea within upper 200 m with the maximum speed up to 50 cm/s, and much weaker eastward flow in the lower layer (< 10 cm/s) due to blocking by the shallow sill at the west of the Dampier Strait. The abrupt change of bottom topography induces active horizontal and vertical mixing which results in a three-layered current system with a major through-flow of -0.99 Sv (Sv=106 m3/s) into the Seram Sea; the transports in the upper and the lower layers are -1.14 Sv and -0.24 Sv (westward), respectively, and in the middle there is a return flow with the transport of +0.39 Sv (eastward). |
| |
Keywords: | a three-layered system New Guinea coastal undercurrent south Pacific tropical water (SPTW) south Pacific intermediate water (SPIW) verticalmixing |
本文献已被 CNKI 维普 万方数据 SpringerLink 等数据库收录! |
| 点击此处可从《海洋学报(英文版)》浏览原始摘要信息 |
| 点击此处可从《海洋学报(英文版)》下载免费的PDF全文 |