IMHE OpenIR  > 山地灾害与地表过程重点实验室
Alternative TitleTriggering Mechanism of Debris Flows in Jiurong Valley in Parlung Zangbo,Southeastern Tibet
齐云龙1; 邓明枫2
Source Publication灾害学
Contribution Rank2
Other AbstractThe Sichuan-Tibet highway stretches along with the Parlung Zangbo river,where the temperate glacier and debris flows are highly concentrated. As the distribution of glacier is uneven is each catchment,debris flows is more or less affected by air temperature which enhance glacier retreat. In the downstream of Parlung Zangbo, the occurrence of debris flows in non-glacier catchment is found to be not correlated with air temperature fluctuation, such as which in Jiama valley;however,debris flows in the middle and upper Parlung Zangbo could be affected by air temperature. In this paper,4 debris flows occurred in 2014 ~ 2015 in Jiurong Valley of the upper Parlung Zangbo are applied to analyze the rainfall process before debris flows and the effect of rainfall and air temperature on debris flow occurrence. The research shows 3 debris flows were generated by rainfall and the mechanism is similar with the normal storm induced debris flows,which islow air temperature+ stormtype. Debris flows occurrence On Aug. 18th,2014 is highly correlated with the mushrooming air temperature. The effect ofhigh air temperature+ rainfalllied in soil activity was greatly amplified because the mushrooming air temperature drove internal ice particle ablation and a surface layer with high water content,resulting into less rainfall threshold required to generate surface runoff and the following debris flows.
Keyword藏东南 泥石流 形成机制 降雨 高温
Indexed ByCSCD
Citation statistics
Cited Times:1[CSCD]   [CSCD Record]
Document Type期刊论文
Corresponding Author齐云龙
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GB/T 7714
齐云龙,邓明枫. 川藏公路波密段九绒沟泥石流形成机制研究[J]. 灾害学,2019,34(3):123-127.
APA 齐云龙,&邓明枫.(2019).川藏公路波密段九绒沟泥石流形成机制研究.灾害学,34(3),123-127.
MLA 齐云龙,et al."川藏公路波密段九绒沟泥石流形成机制研究".灾害学 34.3(2019):123-127.
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