气候变化领域集成服务门户(CCPortal): Monsoonal forcing of Holocene paleoenvironmental change on the central Tibetan Plateau inferred using a sediment record from Lake Nam Co (Xizang, China)

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DOI	10.1007/s10933-013-9702-1
	Monsoonal forcing of Holocene paleoenvironmental change on the central Tibetan Plateau inferred using a sediment record from Lake Nam Co (Xizang, China)
	Doberschuetz, Stefan; Frenzel, Peter; Haberzettl, Torsten; Kasper, Thomas; Wang, Junbo; Zhu, Liping; Daut, Gerhard; Schwalb, Antje; Maeusbacher, Roland
通讯作者	Doberschutz, S (通讯作者)
发表日期	2014
ISSN	0921-2728
EISSN	1573-0417
起始页码	253
结束页码	266
卷号	51 期号:2
英文摘要	This study focuses on Holocene monsoon dynamics on the central Tibetan Plateau (TP) inferred using a sediment record from Lake Nam Co. A high-resolution (decadal) multi-proxy approach, using geochemical, micropaleontological, and sedimentological methods was applied. Fifteen AMS-C-14 ages were used to establish the chronology, assuming a reservoir effect of 1,420 years. Our results point to a first strong monsoonal pulse at Lake Nam Co similar to 11.3 cal ka BP, followed by colder and drier conditions until similar to 10.8 cal ka BP. A warm and humid climate from similar to 10.8 to similar to 9.5 cal ka BP is related to a strong summer monsoon on the central TP, triggering a lake-level highstand at similar to 9.5 cal ka BP. Declining minerogenic input after similar to 9.5 cal ka BP indicates less moisture availability until similar to 7.7 cal ka BP. Following stable conditions between similar to 7.7 and similar to 6.6 cal ka BP, a warm and wet climate is inferred for the time span from similar to 6.6 to similar to 4.8 cal ka BP. A change towards drier conditions after similar to 4.8 cal ka BP points to a weakening of the Indian Ocean Summer Monsoon on the central TP, further diminished after similar to 2.0 cal ka BP. A short-term wet spell occurred from similar to 1.5 to similar to 1.3 cal ka BP. By comparing the results derived from Lake Nam Co with several lacustrine records from the central, northern, and eastern TP, a similar but not synchronous pattern of monsoon-driven paleoenvironmental change is observed. Although the general trend of lake and catchment evolution on the TP during the Holocene is also reproduced in this record, pronounced spatial and temporal offsets with respect to distinct climate events were detected, suggesting periods of non-uniform moisture and temperature evolution.
关键词	OCEAN SUMMER MONSOON LAGUNA-POTROK-AIKE SOUTHERN PATAGONIA ENVIRONMENTAL-CHANGES ORGANIC GEOCHEMISTRY HYDROLOGICAL CHANGES CLIMATE DEVELOPMENT ARGENTINA QINGHAI INDICATORS
英文关键词	Tibetan Plateau; Nam Co; Paleohydrology; Paleoclimate; Indian Ocean Summer Monsoon; Holocene
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Marine & Freshwater Biology
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Limnology
WOS记录号	WOS:000330734400008
来源期刊	JOURNAL OF PALEOLIMNOLOGY
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258302
推荐引用方式 GB/T 7714	Doberschuetz, Stefan,Frenzel, Peter,Haberzettl, Torsten,et al. Monsoonal forcing of Holocene paleoenvironmental change on the central Tibetan Plateau inferred using a sediment record from Lake Nam Co (Xizang, China)[J]. 中国科学院青藏高原研究所,2014,51(2).
APA	Doberschuetz, Stefan.,Frenzel, Peter.,Haberzettl, Torsten.,Kasper, Thomas.,Wang, Junbo.,...&Maeusbacher, Roland.(2014).Monsoonal forcing of Holocene paleoenvironmental change on the central Tibetan Plateau inferred using a sediment record from Lake Nam Co (Xizang, China).JOURNAL OF PALEOLIMNOLOGY,51(2).
MLA	Doberschuetz, Stefan,et al."Monsoonal forcing of Holocene paleoenvironmental change on the central Tibetan Plateau inferred using a sediment record from Lake Nam Co (Xizang, China)".JOURNAL OF PALEOLIMNOLOGY 51.2(2014).