Articles | Volume 17, issue 3
https://doi.org/10.5194/nhess-17-345-2017
https://doi.org/10.5194/nhess-17-345-2017
Research article
 | 
08 Mar 2017
Research article |  | 08 Mar 2017

Meteorological factors driving glacial till variation and the associated periglacial debris flows in Tianmo Valley, south-eastern Tibetan Plateau

Mingfeng Deng, Ningsheng Chen, and Mei Liu

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Latest update: 14 Jun 2024
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Short summary
Annual air temperature spiked and glacier retreated shortly before the three periglacial debris flows in Tianmo valley. However, they did not occur when glacier retreat was sharpest, resulting from the frozen bared glacial till as the melting of internal ice lags behind glacial retreat. The activity of the glacial till can be enhanced by prolonged high air temperature. Finally, either rainfall or continuous percolation of ice ablation water flows can generate debris flow.
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