Seasonal characteristics and forcing mechanisms of the surface Kuroshio branch intrusion into the South China Sea

doi:10.1007/s13131-017-1132-x

	Seasonal characteristics and forcing mechanisms of the surface Kuroshio branch intrusion into the South China Sea
	Guo, Jingsong 1,2; Zhang, Zhixin 1,2; Xia, Changshui 1,2; Guo, Binghuo 1,2
	2019-01
关键词	surface Kuroshio branch Luzon Strait forcing mechanisms
卷号	38
期号	1
DOI	10.1007/s13131-017-1132-x
页码	13-21
英文摘要	Using observational data of Argos satellite-tracked drifters from 1988 to 2012, we analyzed seasonal characteristics of the surface Kuroshio branch (KB) intrusion into the South China Sea (SCS). The analysis results are as follows. The surface KB originates from the southern Balintang Channel (BLTC) and Babuyan Channel (BBYC). It begins in late September, reaches peak strength in November-December, and declines at the end of March. The mean speed of drifters along the KB path during their traverse of the Luzon Strait (LS) was 43% faster than during the two days before entering the LS for the flow originating from the southern BLTC, but there was a 24% increase in speed for the flow from the BBYC. The observations show that in winter, monthly-mean sea-level anomalies (SLAs) were positive southwest of Taiwan Island and extended to the northern LS. The SLAs were negative northwest of Luzon Island and extended to the southern LS, which acted like a pump, forcing a part of Kuroshio water westward into the SCS. The condition under which the KB forms was solved by a set of simplified motion equations. The results indicate that whether the KB can form depends upon the sea-level gradient at the central LS and region to the west, as well as the location, speed and direction of Kuroshio surface water when it enters the LS.
会议录	ACTA OCEANOLOGICA SINICA
会议录出版者	SPRINGER
会议录出版地	233 SPRING ST, NEW YORK, NY 10013 USA
语种	英语
资助项目	China Ocean Mineral Resources R&D Association Program[DY135-E2-1-06]
WOS研究方向	Oceanography
WOS记录号	WOS:000459469100004
WOS关键词	VARIABILITY ; CIRCULATION ; TRANSPORT ; WATER
内容类型	会议论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/26306]
专题	自然资源部第一海洋研究所
通讯作者	Xia, Changshui
作者单位	1.Minist Nat Resources, Inst Oceanog 1, Key Lab Marine Sci & Numer Modeling, Qingdao 266061, Peoples R China 2.Pilot Natl Lab Marine Sci & Technol Qingdao, Lab Reg Oceanog & Numer Modeling, Qingdao 266061, Peoples R China
推荐引用方式 GB/T 7714	Guo, Jingsong,Zhang, Zhixin,Xia, Changshui,et al. Seasonal characteristics and forcing mechanisms of the surface Kuroshio branch intrusion into the South China Sea[C]. 见:.