干旱区生态环境知识资源中心(Arid): TIMING AND EXTENT OF LATE PLEISTOCENE GLACIATION IN THE ARID CENTRAL ANDES OF ARGENTINA AND CHILE (22 degrees-41 degrees S)

Arid

DOI	10.18172/cig.3235
	TIMING AND EXTENT OF LATE PLEISTOCENE GLACIATION IN THE ARID CENTRAL ANDES OF ARGENTINA AND CHILE (22 degrees-41 degrees S)
	Zech, J.; Terrizzano, C.; Garcia-Morabito, E.; Veit, H.; Zech, R.
通讯作者	Zech, J
来源期刊	CUADERNOS DE INVESTIGACION GEOGRAFICA
ISSN	0211-6820
EISSN	1697-9540
出版年	2017
卷号	43 期号:2 页码:697-718
英文摘要	The arid Central Andes are a key site to study changes in intensity and movement of the three main atmospheric circulation systems over South America: the South American Summer Monsoon (SASM), the Westerlies and the El Nino Southern Oscillation (ENSO). In this semi-arid to arid region glaciers are particularly sensitive to precipitation changes and thus the timing of past glaciation is strongly linked to changes in moisture supply. Surface exposure ages from study sites between 41 degrees and 22 degrees S suggest that glaciers advanced: i) prior to the global Last Glacial Maximum (gLGM) at similar to 40 ka in the mid (26 degrees-30 degrees S) and southern Central Andes (35 degrees-41 degrees S), ii) in phase with the gLGM in the northern and southern Central Andes and iii) during the late-glacial in the northern Central Andes. Deglaciation started synchronous with the global rise in atmospheric CO2 concentration and increasing temperature starting at similar to 18 ka. The pre-gLGM glacial advances likely document enhanced precipitation related to the Southern Westerlies, which shifted further to the North at that time than previosuly assumed. During the gLGM glacial advances were favored by decreased temperatures in combination with increased humidity due to a southward shifted Intertropical Convergence Zone (ITCZ) and SASM. During the late-glacial a substantial increase in moisture can be explained by enhanced upper tropospheric easterlies as response to an intensified SASM and sustained La Nina-like conditions over the eastern equatorial Pacific that lead to glacial advances in the northern Central Andes and the lake level highstand Tauca (18-14 ka) on the Altiplano. In the southernmost Central Andes at 39 degrees-41 degrees S, further north at 31 degrees S and in the northernmost Central Andes at 22 degrees S glacial remnants even point to precipitation driven glaciations older than similar to 115 ka and 260 ka.
英文关键词	glacial chronology arid Central Andes of Argentina and Chile Be-10 surface exposure dating paleoclimate reconstruction
类型	Article
语种	英语
开放获取类型	Green Published, Other Gold
收录类别	ESCI
WOS记录号	WOS:000418809200015
WOS关键词	BOLIVIAN ALTIPLANO ; ATACAMA DESERT ; CLIMATE VARIABILITY ; LAST DEGLACIATION ; GLACIER ADVANCES ; NORTHERN CHILE ; HALF-LIFE ; 30' S ; ATLANTIC ; BE-10
WOS类目	Geography, Physical
WOS研究方向	Physical Geography
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/332445
作者单位	[Zech, J.] Max Planck Inst Sci Human Hist, Kahla Str 10, D-07745 Jena, Germany; [Terrizzano, C.; Garcia-Morabito, E.; Veit, H.; Zech, R.] Univ Bern, Inst Geog, Hallerstr 12, CH-3012 Bern, Switzerland; [Garcia-Morabito, E.] Univ Buenos Aires, CONICET, Inst Estudios Andinos Don Pablo Groeber, Buenos Aires, DF, Argentina
推荐引用方式 GB/T 7714	Zech, J.,Terrizzano, C.,Garcia-Morabito, E.,et al. TIMING AND EXTENT OF LATE PLEISTOCENE GLACIATION IN THE ARID CENTRAL ANDES OF ARGENTINA AND CHILE (22 degrees-41 degrees S)[J],2017,43(2):697-718.
APA	Zech, J.,Terrizzano, C.,Garcia-Morabito, E.,Veit, H.,&Zech, R..(2017).TIMING AND EXTENT OF LATE PLEISTOCENE GLACIATION IN THE ARID CENTRAL ANDES OF ARGENTINA AND CHILE (22 degrees-41 degrees S).CUADERNOS DE INVESTIGACION GEOGRAFICA,43(2),697-718.
MLA	Zech, J.,et al."TIMING AND EXTENT OF LATE PLEISTOCENE GLACIATION IN THE ARID CENTRAL ANDES OF ARGENTINA AND CHILE (22 degrees-41 degrees S)".CUADERNOS DE INVESTIGACION GEOGRAFICA 43.2(2017):697-718.