Articles | Volume 17, issue 3
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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Cited articles

Åkerman, H. J. and Johansson, M.: Thawing permafrost and thicker active layers in sub-Arctic Sweden, Permafrost Periglac., 19, 279–292, 2008.
Arenson, L. U. and Springman, S. M.: Mathematical descriptions for the behaviour of ice-rich frozen soils at temperatures close to 0 °C, Can. Geotech. J., 42, 431–442, 2005.
Berti, M. and Simoni, A.: Experimental evidences and numerical modelling of debris flow initiated by channel runoff, Landslides, 2, 171–182, 2005.
Bommer, C., Fitze, P., and Schneider, H.: Thaw-consolidation effects on the stability of Alpine talus slopes in permafrost, Permafrost Periglac., 23, 267–276, 2012.
Chen, N. S., Zhou, H. B., and Hu, G. S.: Development rules of debris flow under the influence of climate change in Nyingchi, Adv. Clim. Change Res., 7, 412–417, 2011 (in Chinese).
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.
Final-revised paper