Radionuclides in ornithogenic sediments as evidence for recent warming in the Ross Sea region, Antarctica

doi:10.1016/j.scitotenv.2016.03.046

CORC > 合肥物质科学研究院 > 中国科学院合肥物质科学研究院 > 技术生物与农业工程研究所

	Radionuclides in ornithogenic sediments as evidence for recent warming in the Ross Sea region, Antarctica
	Nie, Yaguang 1,2; Xu, Liqiang 3; Liu, Xiaodong 1; Emslie, Steven D.4
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2016-07-01
卷号	557 期号:无页码:248-256
关键词	Radionuclides Pb-210 Dating Pb-210 And Cs-137 Flux Ornithogenic Sediments Climate Warming Ross Sea Region
DOI	10.1016/j.scitotenv.2016.03.046
文献子类	Article
英文摘要	Radionuclides including Pb-210, Ra-226 and Cs-137 were analyzed in eight ornithogenic sediment profiles from McMurdo Sound, Ross Sea region, East Antarctica. Equilibration between Pb-210 and Ra-226 were reached in all eight profiles, enabling the determination of chronology within the past two centuries through the Constant Rate of Supply (CRS) model. Calculated fluxes of both Pb-210 and Cs-137 varied drastically among four of the profiles (MB4, MB6, CC and CL2), probably due to differences in their sedimentary environments. In addition, we found the flux data exhibiting a clear decreasing gradient in accordance with their average deposition rate, which was in turn related to the specific location of the profiles. We believe this phenomenon may correspond to global warming of the last century, since warming-induced surface runoff would bring more inflow water and detritus to the coring sites, thus enhancing the difference among the profiles. To verify this hypothesis, the deposition rate against age of the sediments was calculated based on their determined chronology, which showed ascending trends in all four profiles. The significant increase in deposition rates over the last century is probably attributable to recent warming, implying a potential utilization of radionuclides as environmental indicators in this region. (C) 2016 Elsevier B.V. All rights reserved.
WOS关键词	KING-GEORGE ISLAND ; CLIMATE-CHANGE ; LAKE-SEDIMENTS ; SNOW ACCUMULATION ; ICE-SHEET ; CS-137 ; SURFACE ; PB-210 ; PENINSULA ; RESPONSES
WOS研究方向	Environmental Sciences & Ecology
语种	英语
WOS记录号	WOS:000375136200026
资助机构	Chinese Arctic and Antarctic Administration of the State Oceanic Administration ; Chinese Arctic and Antarctic Administration of the State Oceanic Administration ; Chinese Arctic and Antarctic Administration of the State Oceanic Administration ; Chinese Arctic and Antarctic Administration of the State Oceanic Administration ; National Natural Science Foundation of China(41576183 ; National Natural Science Foundation of China(41576183 ; National Natural Science Foundation of China(41576183 ; National Natural Science Foundation of China(41576183 ; NSF(ANT 0739575) ; NSF(ANT 0739575) ; NSF(ANT 0739575) ; NSF(ANT 0739575) ; 41376124) ; 41376124) ; 41376124) ; 41376124) ; Chinese Arctic and Antarctic Administration of the State Oceanic Administration ; Chinese Arctic and Antarctic Administration of the State Oceanic Administration ; Chinese Arctic and Antarctic Administration of the State Oceanic Administration ; Chinese Arctic and Antarctic Administration of the State Oceanic Administration ; National Natural Science Foundation of China(41576183 ; National Natural Science Foundation of China(41576183 ; National Natural Science Foundation of China(41576183 ; National Natural Science Foundation of China(41576183 ; NSF(ANT 0739575) ; NSF(ANT 0739575) ; NSF(ANT 0739575) ; NSF(ANT 0739575) ; 41376124) ; 41376124) ; 41376124) ; 41376124)
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/22383]
专题	合肥物质科学研究院_技术生物与农业工程研究所
作者单位	1.Univ Sci & Technol China, Sch Earth & Space Sci, Inst Polar Environm, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Hefei Inst Phys Sci, Key Lab Environm Toxicol & Pollut Control Technol, Key Lab Ion Beam Bioengn, Hefei 230031, Anhui, Peoples R China 3.Hefei Univ Technol, Sch Resources & Environm Engn, Hefei 230009, Anhui, Peoples R China 4.Univ N Carolina, Dept Biol & Marine Biol, 601 S Coll Rd, Wilmington, NC 28403 USA
推荐引用方式 GB/T 7714	Nie, Yaguang,Xu, Liqiang,Liu, Xiaodong,et al. Radionuclides in ornithogenic sediments as evidence for recent warming in the Ross Sea region, Antarctica[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2016,557(无):248-256.
APA	Nie, Yaguang,Xu, Liqiang,Liu, Xiaodong,&Emslie, Steven D..(2016).Radionuclides in ornithogenic sediments as evidence for recent warming in the Ross Sea region, Antarctica.SCIENCE OF THE TOTAL ENVIRONMENT,557(无),248-256.
MLA	Nie, Yaguang,et al."Radionuclides in ornithogenic sediments as evidence for recent warming in the Ross Sea region, Antarctica".SCIENCE OF THE TOTAL ENVIRONMENT 557.无(2016):248-256.