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学科主题: 地理学::自然地理学
题名: Glacial activity reflected in a continuous lacustrine record since the early Holocene from the proglacial Laigu Lake on the southeastern Tibetan Plateau
作者: Huang, L (Huang, Lei)1, 3; Zhu, LP (Zhu, Liping)1, 2; Wang, JB (Wang, Junbo)1, 2; Ju, JT (Ju, Jianting)1; Wang, Y (Wang, Yong)1; Zhang, JF (Zhang, Jifeng)1; Yang, RM (Yang, Ruimin)1, 3
通讯作者: Huang, L ; Zhu, LP
关键词: OCEAN SUMMER MONSOON ; SEDIMENT CORE ; PUMOYUM CO ; FLUCTUATIONS ; MOUNTAINS ; HIMALAYA ; CHINA ; AGE ; RECONSTRUCTION ; TEMPERATURE
刊名: PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
发表日期: 2016
DOI: 10.1016/j.palaeo.2016.05.019
卷: 456, 期:0, 页:37-45
收录类别: SCI
合作性质: 国内
文章类型: Article
部门归属: 环境
英文摘要: The southeastern Tibetan Plateau is an important area of monsoonal maritime glaciation, and it serves as a watershed for several major Asian rivers, including the Brahmaputra River and the Lantsang River. Glacial activity is sensitive to climate change in this area. However, due to high annual ablation and accumulation in this region, ice cores over long time scales are difficult to retrieve. In addition, reconstructed glacial activity from moraine dates is usually discontinuous. Here, we use a sediment core retrieved from Laigu Lake, which is a proglacial lake located in the headwaters of the Parlung Zangbo River, the largest tributary of the Brahmaputra River, to reflect glacial activities over the last-8000 years in this area. Samples of the sediment core were analyzed for magnetic susceptibility, XRF (X-ray florescence) scanned elemental concentration and grain size. The results indicated that the magnetic susceptibility and CPS (peak area counts per second) of strontium (Sr) could be used as proxies for glacial activity. The CPS of Sr and the magnetic susceptibility were lower and the glacial activity was weak before 4.3 cal Ica BP. Expansion of the glaciers in this area.began from 4.3 cal ka BP and continued to develop after similar to 33 cal ka BP. From 2.2 cal ka BP to 1.6 cal ka BP, the glaciers retreated substantially, followed by another development period until the onset of modern global warming. Based on our findings and other climate records, we concluded that glacial activity in the southeastern Tibetan Plateau areas was mainly influenced by Northern Hemisphere temperatures and summer insolation over a sub-orbital time scale, but did not respond to the Indian monsoon. (C) 2016 Elsevier B.V. All rights reserved.
语种: 英语
WOS记录号: WOS:000378959900003
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.itpcas.ac.cn/handle/131C11/7627
Appears in Collections:图书馆_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China
2.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

Recommended Citation:
Huang, L ,Zhu, LP ,Wang, JB ,et al. Glacial activity reflected in a continuous lacustrine record since the early Holocene from the proglacial Laigu Lake on the southeastern Tibetan Plateau[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2016,456(0):37-45.
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