Intrusion Pattern of the Offshore Kuroshio Branch Current and Its Effects on Nutrient Contributions in the East China Sea

doi:10.1002/2017JC013538

	Intrusion Pattern of the Offshore Kuroshio Branch Current and Its Effects on Nutrient Contributions in the East China Sea
	Wang, Wentao 1,2; Yu, Zhiming 1,2; Song, Xiuxian 1,2; Yuan, Yongquan 1,2; Wu, Zaixing 1,2; Zhou, Peng 1,2,3; Cao, Xihua 1,2
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
	2018-03-01
卷号	123 期号:3 页码:2116-2128
关键词	East China Sea Kuroshio Phosphate Branch Current Intrusion Nutrients Cycles
ISSN号	2169-9275
DOI	10.1002/2017JC013538
文献子类	Article
英文摘要	During the autumn season of 2014 (October-November), nutrient samples and nitrogen and oxygen isotope samples from the East China Sea (ECS) were collected and analyzed, and auxiliary physical parameters were determined. Distinctive high-salinity water column conditions with significant haloclines and pycnoclines similar to those observed during the spring were detected at the bottom of the ECS during the autumn. These water column conditions were attributed to the intrusion of the Kuroshio Subsurface Water (KSSW), which then separated into two currents, including the Offshore Kuroshio Branch Current (OKBC). Compared with spring, this intrusion transported higher phosphorus (P) concentrations onto the ECS continental shelf in autumn. However, according to multiple analyses, biogeochemical nitrogen processes are unable to explain the variations in the P concentrations (increase) while assuming that each distinctive water column is consistent. Identifying the water columns by their salinities and P concentrations revealed that the northern ECS water column was similar to the deep KSSW while the southern ECS water column was similar to the shallow KSSW. Therefore, we speculate that the distinctions among the seasonal variations of P-enriched water masses were attributable to the different intrusion positions of the Kuroshio. The shift of the KSSW intrusion location moved toward the northeast during the autumn relative to the spring. This shift, which was proved by the oceanic vortex data, caused the deeper KSSW water upwelled to the ECS and formed the OKBC, thereby supplying additional P during the autumn.
WOS关键词	MARINE NITROGEN-CYCLE ; FRESH-WATER ; ENVIRONMENTAL-CONDITIONS ; CHEMICAL HYDROGRAPHY ; ISOTOPIC COMPOSITION ; CONTINENTAL-SHELF ; NITRATE ; TAIWAN ; PHOSPHORUS ; PHYTOPLANKTON
WOS研究方向	Oceanography
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000430918500031
资助机构	Strategic Priority Research Program of the Chinese Academy of Sciences(XDA11020601) ; National Key Research and Development Program of China(2016YFE0101500) ; Aoshan Talent Cultivation Program(2017ASTCP-OS16)
内容类型	期刊论文
源URL	[http://ir.qibebt.ac.cn/handle/337004/11537]
专题	中国科学院青岛生物能源与过程研究所
通讯作者	Yu, Zhiming
作者单位	1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Ecol & Environm Sci, Qingdao, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Ecol & Environm Sci, Qingdao, Peoples R China 3.Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Wang, Wentao,Yu, Zhiming,Song, Xiuxian,et al. Intrusion Pattern of the Offshore Kuroshio Branch Current and Its Effects on Nutrient Contributions in the East China Sea[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2018,123(3):2116-2128.
APA	Wang, Wentao.,Yu, Zhiming.,Song, Xiuxian.,Yuan, Yongquan.,Wu, Zaixing.,...&Cao, Xihua.(2018).Intrusion Pattern of the Offshore Kuroshio Branch Current and Its Effects on Nutrient Contributions in the East China Sea.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,123(3),2116-2128.
MLA	Wang, Wentao,et al."Intrusion Pattern of the Offshore Kuroshio Branch Current and Its Effects on Nutrient Contributions in the East China Sea".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 123.3(2018):2116-2128.