气候变化领域集成服务门户(CCPortal): Enhanced terrigenous organic matter input and productivity on the western margin of the Western Pacific Warm Pool during the Quaternary sea-level lowstands: Forcing mechanisms and implications for the global carbon cycle

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DOI	10.1016/j.quascirev.2020.106211
	Enhanced terrigenous organic matter input and productivity on the western margin of the Western Pacific Warm Pool during the Quaternary sea-level lowstands: Forcing mechanisms and implications for the global carbon cycle
	Xu Z.; Wan S.; Colin C.; Li T.; Clift P.D.; Chang F.; Sun R.; Yu Z.; Lim D.
发表日期	2020
ISSN	0277-3791
卷号	232
英文摘要	Changes in terrigenous organic matter (OM) input, productivity and the associated bottom-water redox conditions, together with forcing mechanisms and global carbon cycle implications of such variations, on the western margin of the Western Pacific Warm Pool (WPWP) during the Quaternary remain controversial. In this study, we reconstructed the hydrological dynamics, terrigenous OM input, productivity, and deep-sea redox conditions using one core from the continental slope of the Philippine Sea. The new data were integrated with published proxies from the same core and two additional cores from the abyssal Philippine Sea. The results exhibited noticeable variations in the abovementioned indicators, in correspondence to changes in the supply of terrigenous material. The continental slope deposition featured signals of strong physical erosion and chemical weathering of unconsolidated sediments on the exposed continental shelf during the Quaternary sea-level lowstands, which significantly contributed to increased terrigenous OM input and productivity and, in turn, decreased bottom-water oxygenation and atmospheric CO2 concentrations. In the abyssal Philippine Sea, increased Asian dust-driven OM input and productivity also acted as a sink of atmospheric CO2 during sea-level lowstands. Analysis of the data suggested that the enhanced terrigenous OM input and biological pump and thus the decreased dissolved oxygen level of the bottom water on the western margin of the WPWP played important roles in modifying the global carbon cycle during sea-level lowstands. In contrast, the influence of hydrological dynamics on terrigenous OM input, productivity, and redox conditions therein during the Quaternary was limited. © 2020 Elsevier Ltd
英文关键词	Atmospheric CO2 sequestration; East Asian winter monsoon; Paleoredox; Siliciclastic input
语种	英语
scopus关键词	Atmospheric chemistry; Biochemical oxygen demand; Biogeochemistry; Carbon; Carbon dioxide; Dissolved oxygen; Erosion; Organic compounds; Productivity; Salinity measurement; Weathering; CO2 sequestration; Dissolved oxygen levels; East Asian winter monsoon; Organic matter inputs; Paleoredox; Siliciclastic input; Unconsolidated sediment; Western Pacific Warm Pool; Sea level; biogeochemistry; biological pump; carbon dioxide; carbon sequestration; chemical weathering; continental shelf; continental slope; dissolved oxygen; monsoon; oxygenation; redox conditions; silicate mineral; terrigenous deposit; Pacific Ocean; Philippine Sea
来源期刊	Quaternary Science Reviews
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/151563
作者单位	CAS Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China; Laboratory for Marine Geology, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, 266061, China; Key Laboratory of Marine Sedimentology and Environmental Geology, First Institute of Oceanography, Ministry of Natural Resources, Qingdao, 266061, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, 266071, China; CAS Center for Excellence in Quaternary Science and Global Change, Xi'an, 710061, China; Laboratoire GEOsciences Paris-Sud (GEOPS), UMR 8148, CNRS-Université de Paris-Sud, Université de Paris-Saclay, Bâtiment 504, Orsay Cedex, 91405, France; Department of Geology and Geophysics, E253 Howe-Russell-Kniffen Geoscience Complex, Louisiana State University, Baton Rouge, LA 70803, United States; School of Resources and Environment Engineering, Shandong University of Technology, Zibo, 255000, China; South Sea Research Institu...
推荐引用方式 GB/T 7714	Xu Z.,Wan S.,Colin C.,et al. Enhanced terrigenous organic matter input and productivity on the western margin of the Western Pacific Warm Pool during the Quaternary sea-level lowstands: Forcing mechanisms and implications for the global carbon cycle[J],2020,232.
APA	Xu Z..,Wan S..,Colin C..,Li T..,Clift P.D..,...&Lim D..(2020).Enhanced terrigenous organic matter input and productivity on the western margin of the Western Pacific Warm Pool during the Quaternary sea-level lowstands: Forcing mechanisms and implications for the global carbon cycle.Quaternary Science Reviews,232.
MLA	Xu Z.,et al."Enhanced terrigenous organic matter input and productivity on the western margin of the Western Pacific Warm Pool during the Quaternary sea-level lowstands: Forcing mechanisms and implications for the global carbon cycle".Quaternary Science Reviews 232(2020).