Low-frequency western Pacific Ocean sea level and circulation changes due to the connectivity of the Philippine Archipelago

CORC > 南海海洋研究所 > 中国科学院南海海洋研究所 > 热带海洋环境国家重点实验室(LTO)

	Low-frequency western Pacific Ocean sea level and circulation changes due to the connectivity of the Philippine Archipelago
	[Zhuang, Wei ; Du, Yan] South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China ; [Qiu, Bo] Univ Hawaii Manoa, Dept Oceanog, Honolulu, HI 96822 USA
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
	2013
卷号	118 期号:12 页码:6759-6773
关键词	interannual-to-decadal sea level and circulation changes Philippine Archipelago coastal Kelvin waves time-dependent island rule
ISSN号	2169-9275
通讯作者	zhuang@scsio.ac.cn
中文摘要	Interannual-to-decadal sea level and circulation changes associated with the oceanic connectivity around the Philippine Archipelago are studied using satellite altimeter sea surface height (SSH) data and a reduced gravity ocean model. SSHs in the tropical North Pacific, the Sulu Sea and the eastern South China Sea (ESCS) display very similar low-frequency oscillations that are highly correlated with El Nino and Southern Oscillation. Model experiments reveal that these variations are mainly forced by the low-frequency winds over the North Pacific tropical gyre and affected little by the winds over the marginal seas and the North Pacific subtropical gyre. The wind-driven baroclinic Rossby waves impinge on the eastern Philippine coast and excite coastal Kelvin waves, conveying the SSH signals through the Sibutu Passage-Mindoro Strait pathway into the Sulu Sea and the ESCS. Closures of the Luzon Strait, Karimata Strait, and ITF passages have little impacts on the low-frequency sea level changes in the Sulu Sea and the ESCS. The oceanic pathway west of the Philippine Archipelago modulates the western boundary current system in the tropical North Pacific. Opening of this pathway weakens the time-varying amplitudes of the North Equatorial Current bifurcation latitude and Kuroshio transport. Changes of the amplitudes can be explained by the conceptual framework of island rule that allows for baroclinic adjustment. Although it fails to capture the interannual changes in the strongly nonlinear Mindanao Current, the time-dependent island rule is nevertheless helpful in clarifying the role of the archipelago in regulating its multidecadal variations.
学科主题	Oceanography
资助信息	We thank Shuiming Chen for many helpful discussions. Comments from reviewers are highly appreciated. The merged satellite altimeter data were provided by the CLS Space Oceanography Division. The ECMWF ORA-S3 data were provided by the Asia-Pacific Data Research Center, University of Hawaii. W.Z. and Y.D. are supported by Strategic Priority Research Program of the Chinese Academy of Sciences (XDA11010103), National Basic Research Program of China (2011CB403503), National Natural Science Foundation of China (41176028, 41176024), and CAS project (SQ200809). B.Q. is supported by NSF through grant OCE-0926594.
原文出处	AMER GEOPHYSICAL UNION
语种	英语
公开日期	2015-01-14
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/10862]
专题	南海海洋研究所_热带海洋环境国家重点实验室(LTO)
推荐引用方式 GB/T 7714	[Zhuang, Wei,Du, Yan] South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China,[Qiu, Bo] Univ Hawaii Manoa, Dept Oceanog, Honolulu, HI 96822 USA. Low-frequency western Pacific Ocean sea level and circulation changes due to the connectivity of the Philippine Archipelago[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2013,118(12):6759-6773.
APA	[Zhuang, Wei,Du, Yan] South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China,&[Qiu, Bo] Univ Hawaii Manoa, Dept Oceanog, Honolulu, HI 96822 USA.(2013).Low-frequency western Pacific Ocean sea level and circulation changes due to the connectivity of the Philippine Archipelago.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,118(12),6759-6773.
MLA	[Zhuang, Wei,et al."Low-frequency western Pacific Ocean sea level and circulation changes due to the connectivity of the Philippine Archipelago".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 118.12(2013):6759-6773.