干旱区生态环境知识资源中心(Arid): A new 20th century lake sedimentary record from the Atacama Desert/Chile reveals persistent PDO (Pacific Decadal Oscillation) impact

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DOI	10.1016/j.jsames.2019.102302
	A new 20th century lake sedimentary record from the Atacama Desert/Chile reveals persistent PDO (Pacific Decadal Oscillation) impact
	Cerda, Mauricio 1,2,3; Evangelista, Heitor 4,7; Valdes, Jorge 3,5; Siffedine, Abdelfettah 5,6; Boucher, Hugues 6; Nogueira, Juliana 4,5,7; Nepomuceno, Aguinaldo 1; Ortlieb, Luc 6
通讯作者	Cerda, Mauricio
来源期刊	JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
ISSN	0895-9811
出版年	2019
卷号	95
英文摘要	The Atacama Desert lakes located at high altitudes with very low anthropogenic impacts preserve great potential to recover regional climate changes and environmental processes at a decadal to centennial time scales. Herein, we present a high-resolution analysis of the stratigraphy and metal composition of Inka Coya Lake sediment core, in order to clarify the main forcings acting on sedimentation rates and both eolian and precipitation patterns at Atacama Desert environment. The results suggest that terrigenous inputs can be mainly related to the PDO (Pacific Decadal Oscillation), while laminations preserve a direct association with El Nino-Southern Oscillation - ENSO (4.2-5.3 yr cyclicity). Additionally, the Cu mining activities in Chile are recorded in the lake. The sedimentation rates and precipitation patterns were associated with ENSO, highlighting the relation between La Nina and wetter periods at Atacama. Finally, high-resolution analyses of the geochemical composition provided additional criteria to identify the erosion processes at the basin, suggesting different sources of sediments, which fluxes into the lake covariated with PDO at a decadal scale, especially during the 20th century.
英文关键词	Atacama PDO Lake sedimentology Elemental composition Copper record
类型	Article
语种	英语
国家	Brazil ; Chile ; France
收录类别	SCI-E
WOS记录号	WOS:000488136300036
WOS关键词	POLYCHLORINATED-BIPHENYLS ; AMERICA ; NORTH ; BASIN
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
EI主题词	2019-11-01
来源机构	French National Research Institute for Sustainable Development ; E17
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310650
作者单位	1.Univ Fed Fluminense, PBMAC, Outeiro Sao Joao Batista S-N, Niteroi, RJ, Brazil; 2.Univ Santo Tomas Santiago, Fac Ciencias, CiiCC, Santiago, Chile; 3.Univ Antofagasta, Fac Ciencias Mar & Recursos Biol, Inst Alexander Humboldt, Lab Sediment & Paleoambientes, Casilla 170, Antofagasta, Chile; 4.UERJ, LARAMG, IBRAG, Pavilhao Haroldo L da Cunha, BR-20550013 Maracana, RJ, Brazil; 5.Univ Fed Fluminense, UANTOF, UPCH, LMI PALEOTRACES,IRD, Niteroi, RJ, Brazil; 6.Univ P&M Curie, Sorbonne Univ, UPMC,LOCEAN, Paris 06,CNRS,UMR 7159,IRD,IRD France Nord 32,IPS, FR-93143 Bondy, France; 7.Univ Fed Fluminense, Inst Quim, Dept Geoquim, Programa Posgrad Geoquim, Outeiro Sao Joao Batista S-N, Niteroi, RJ, Brazil
推荐引用方式 GB/T 7714	Cerda, Mauricio,Evangelista, Heitor,Valdes, Jorge,et al. A new 20th century lake sedimentary record from the Atacama Desert/Chile reveals persistent PDO (Pacific Decadal Oscillation) impact[J]. French National Research Institute for Sustainable Development, E17,2019,95.
APA	Cerda, Mauricio.,Evangelista, Heitor.,Valdes, Jorge.,Siffedine, Abdelfettah.,Boucher, Hugues.,...&Ortlieb, Luc.(2019).A new 20th century lake sedimentary record from the Atacama Desert/Chile reveals persistent PDO (Pacific Decadal Oscillation) impact.JOURNAL OF SOUTH AMERICAN EARTH SCIENCES,95.
MLA	Cerda, Mauricio,et al."A new 20th century lake sedimentary record from the Atacama Desert/Chile reveals persistent PDO (Pacific Decadal Oscillation) impact".JOURNAL OF SOUTH AMERICAN EARTH SCIENCES 95(2019).