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Sediment Records Indicate Outburst Events of Gega Dammed Lake at Yarlung Tsangpo River in the Tibetan Plateau
Liu, Weiming1,2; Wu, Chaohua1,3; Liu, Nannan4; Chen, Xiaoqing1; Huang, Runqiu2
Source PublicationACTA GEOLOGICA SINICA (English Edition)
Contribution Rank1

Outburst floods from glacial-dammed lakes are the main source of megafloods on earth (Baker, 2013). Outburst floods not only cut deep gorges, but also heavily impacted prehistoric human society deeply
because they were the main sources of the great floods described in many legends(Baker, 2009). Outburst floods have even caused global climate change by changing ocean circulation after flowing into the sea (Clarke et al.,2003). The Gega paleo-dammed lake is, located at the
entrance of the Yarlung Tsangpo gorge, and is the only paleo-glacial dammed lake found in the eastern Tibetan Plateau. However, no detailed analyses of its outburst floods have been carried out (Liu et al., 2015;
Montgomery et al., 2004). The sediments from outburst floods, such as gravel dunes and slack-water deposits, were stored in limited amounts because downstream of the dam often consisted of gorges. In addition to forming downstream deposits, outburst floods can also cause a sudden decline in the dammed lake’s water levels, or even cause the lake to dry up. The sediment from dammed lakes can therefore be used to reconstruct the outburst events (Liu et al., 2014), as has been done for
the Missoula dammed lake (Hanson et al., 2012). In previous work, we studied the feasibility of using lacustrine sediment from the Gega paleo-lake to reconstruct outburst events (Liu et al., 2018; Liu et al.,2014). In the present study, we selected the 28.5 m Guoruo (GR) lacustrine section of the Gega paleo-dammed lake for detailed analysis. We carried out
detailed multiple proxy analysis and investigated the sand layers that indicated three outburst events.

KeywordOutburst Events Gega Dammed Lake Sand Layers
Indexed BySCI
Document Type期刊论文
Corresponding AuthorChen, Xiaoqing; Huang, Runqiu
Affiliation1.Key Laboratory of Mountain Hazards and Surface Process, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuan 610041,China
2.State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, Sichuan 610041,China
3.University of Chinese Academy of Sciences, Beijing 100049, China
4.Ministry of Education Key Laboratory of Western China's Environmental Systems, College of Earth Environmental Sciences, Lanzhou University, Lanzhou, Gansu 730000,China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Corresponding Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Liu, Weiming,Wu, Chaohua,Liu, Nannan,et al. Sediment Records Indicate Outburst Events of Gega Dammed Lake at Yarlung Tsangpo River in the Tibetan Plateau[J]. ACTA GEOLOGICA SINICA (English Edition),2018,92:87-90.
APA Liu, Weiming,Wu, Chaohua,Liu, Nannan,Chen, Xiaoqing,&Huang, Runqiu.(2018).Sediment Records Indicate Outburst Events of Gega Dammed Lake at Yarlung Tsangpo River in the Tibetan Plateau.ACTA GEOLOGICA SINICA (English Edition),92,87-90.
MLA Liu, Weiming,et al."Sediment Records Indicate Outburst Events of Gega Dammed Lake at Yarlung Tsangpo River in the Tibetan Plateau".ACTA GEOLOGICA SINICA (English Edition) 92(2018):87-90.
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