气候变化领域集成服务门户(CCPortal): Holocene millennial lake-level fluctuations of Lake Nam Co in Tibet using OSL dating of shorelines

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DOI	10.1016/j.jhydrol.2022.128643
	Holocene millennial lake-level fluctuations of Lake Nam Co in Tibet using OSL dating of shorelines
	Huang, Chang; Yu, Lupeng; Lai, Zhongping
发表日期	2023
ISSN	0022-1694
EISSN	1879-2707
卷号	618
英文摘要	In the past decades, most Tibetan lakes experienced large-scale rises in response to current global warming, conflicting with the limited amplitudes and gradual fluctuation in shoreline-based lake-levels that occurred over the Holocene. The discrepancy is a critical issue in understanding the regional response to global climate. In this study, we reconstructed the Holocene lake-level variations based on high-resolution luminescence ages of thirtyseven samples from fourteen shorelines of Nam Co in interior Tibet. The findings of this work concluded that Nam Co witnessed millennial large-scale lake-level fluctuations with periodical outflows during 11.9-8.3 ka and a broad decrease thereafter. Seven highstand events with ages of ca. 11.9-11.0, 8.3, 6.7, 5.1, 4.2-3.4, 2.4 and 1.1 ka were identified, consistent with the North Atlantic warmer intervals indicating a quick response to global climatic events. In particular, the dramatic lake-level decline during the transition from the Medieval Warm Period to Little Ice Age demonstrated its potential rapid and sensitive response to millennial climatic changes. Our high-resolution OSL dates enabled detection of millennial-scale highstand events. Based on comparison with other global and regional paleoclimatic records, we suggested that Holocene highstands were mainly attributed to the strengthened monsoonal precipitation and increased glacier meltwater that amplifies lake-level fluctuations of glacier-fed lakes, and that paleoclimate and paleo-lake-level reconstruction by core proxies during lake overflow stages could be problematic.
关键词	Holocene highstands Luminescence ages Shorelines Tibetan Nam Co Global change
英文关键词	NORTH-ATLANTIC CLIMATE; ASIAN MONSOON; GLACIER FLUCTUATIONS; HYDROLOGICAL CHANGES; TEMPERATURE-CHANGES; SUMMER MONSOON; QINGHAI LAKE; ICE-AGE; PLATEAU; LUMINESCENCE
WOS研究方向	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS记录号	WOS:000966243600001
来源期刊	JOURNAL OF HYDROLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283174
作者单位	Shantou University; University of Hong Kong; Linyi University
推荐引用方式 GB/T 7714	Huang, Chang,Yu, Lupeng,Lai, Zhongping. Holocene millennial lake-level fluctuations of Lake Nam Co in Tibet using OSL dating of shorelines[J],2023,618.
APA	Huang, Chang,Yu, Lupeng,&Lai, Zhongping.(2023).Holocene millennial lake-level fluctuations of Lake Nam Co in Tibet using OSL dating of shorelines.JOURNAL OF HYDROLOGY,618.
MLA	Huang, Chang,et al."Holocene millennial lake-level fluctuations of Lake Nam Co in Tibet using OSL dating of shorelines".JOURNAL OF HYDROLOGY 618(2023).