Seasonal Variations in the Siliciclastic Fluxes to the Western Philippine Sea and Their Impacts on Seawater epsilon(Nd) Values Inferred From 1Year of In Situ Observations Above Benham Rise

doi:10.1029/2018JC014274

	Seasonal Variations in the Siliciclastic Fluxes to the Western Philippine Sea and Their Impacts on Seawater epsilon(Nd) Values Inferred From 1Year of In Situ Observations Above Benham Rise
	Xu, Zhaokai 1,2; Li, Tiegang 2,3,4; Colin, Christophe 5; Clift, Peter D.6,7; Sun, Rongtao 8; Yu, Zhaojie 1,5; Wan, Shiming 1,2; Lim, Dhongil 9
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
	2018-09
卷号	123 期号:9 页码:6688-6702
关键词	Sr and Nd isotopes mooring system western Philippine Sea foraminifera dust sources East Asian monsoon
ISSN号	2169-9275
DOI	10.1029/2018JC014274
英文摘要	Plain Language Summary The Sr and Nd isotopic compositions of siliciclastic sediments and the Nd isotopic compositions of planktonic foraminifera are investigated in sediment trap samples collected in 2015 at water depths of 500 and 2,800m to (1) track the seasonal changes in the sources and transport patterns of siliciclastic sediments to Benham Rise, (2) constrain the Nd isotopic compositions of the planktonic foraminifera throughout the water column, and (3) assess the influences of lithogenic inputs on the Nd isotopic compositions of the water masses. We demonstrate that volcanic matter and eolian dust are derived primarily from Luzon Island and the Ordos Desert, respectively. In addition, we show that reduced precipitation over Luzon Island and the weakened East Asian winter monsoon intensity result in mass fluxes from Luzon Island and the eastern Asian deserts to the sea, respectively, that are weaker in the winter than in the spring. Furthermore, the epsilon(Nd) values of the foraminifera collected at a water depth of 500m change slightly in 2015, suggesting negligible impacts of lithogenic Nd inputs characterized by significant seasonal flux variations. In contrast, the epsilon(Nd) values of the planktonic foraminifera collected at a water depth of 2,800m are systematically more radiogenic and appear to display seasonal variability. Such results suggest the rapid modification of epsilon(Nd) values during the settling of planktonic foraminifera by the precipitation of Mn coatings derived from water masses at deposition depths, with greater contributions of colder water masses originating from the volcanic Luzon Island margin during the winter.
资助项目	Shandong Provincial Natural Science Foundation, China[ZR2016DM12]
WOS关键词	NEODYMIUM ISOTOPIC COMPOSITION ; SOUTH CHINA SEA ; PACIFIC-OCEAN ; ND ISOTOPES ; ASIAN DUST ; NORTH PACIFIC ; EOLIAN DUST ; EAST-ASIA ; SR ; FORAMINIFERA
WOS研究方向	Oceanography
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000447552600038
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/25533]
专题	自然资源部第一海洋研究所
通讯作者	Li, Tiegang; Lim, Dhongil
作者单位	1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Geol & Environm, Qingdao, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao, Peoples R China 3.SOA, Key Lab Marine Sedimentol & Environm Geol, Inst Oceanog 1, Qingdao, Peoples R China 4.Univ Chinese Acad Sci, Beijing, Peoples R China 5.Univ Paris Saclay, Univ Paris Sud, CNRS, Lab GEOsci Paris Sud GEOPS,UMR 8148, Orsay, France 6.Louisiana State Univ, Dept Geol & Geophys, Baton Rouge, LA 70803 USA 7.Nanjing Normal Univ, Sch Geog Sci, Nanjing, Jiangsu, Peoples R China 8.Shandong Univ Technol, Sch Resources & Environm Engn, Zibo, Peoples R China 9.Korea Inst Ocean Sci & Technol, South Sea Res Inst, Geoje, South Korea
推荐引用方式 GB/T 7714	Xu, Zhaokai,Li, Tiegang,Colin, Christophe,et al. Seasonal Variations in the Siliciclastic Fluxes to the Western Philippine Sea and Their Impacts on Seawater epsilon(Nd) Values Inferred From 1Year of In Situ Observations Above Benham Rise[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2018,123(9):6688-6702.
APA	Xu, Zhaokai.,Li, Tiegang.,Colin, Christophe.,Clift, Peter D..,Sun, Rongtao.,...&Lim, Dhongil.(2018).Seasonal Variations in the Siliciclastic Fluxes to the Western Philippine Sea and Their Impacts on Seawater epsilon(Nd) Values Inferred From 1Year of In Situ Observations Above Benham Rise.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,123(9),6688-6702.
MLA	Xu, Zhaokai,et al."Seasonal Variations in the Siliciclastic Fluxes to the Western Philippine Sea and Their Impacts on Seawater epsilon(Nd) Values Inferred From 1Year of In Situ Observations Above Benham Rise".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 123.9(2018):6688-6702.