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Alternative TitleSpatial-temporal Distribution of Debris Flows in Sichuan Province in China and the Corresponding Rainfall Characteristics
杨红娟1,2; 韦方强2; 马振峰3; 江玉红3
Corresponding Author杨红娟
Source Publication灾害学
Other Abstract



Sichuan Province is one of the regions in China where debris flow hazards are significantly serious. In this study,619 debris flow events which occurred during 1990 -2007 in this region were employed to analyze the spatial and temporal distribution of debris flows. It suggests that more than half of the counties have been threatened by
debris flows,with counties of high debris-flow incidence generally located along the Longmenshan fault or Anninghe fault. In addition,torrential rain plays an important role in the temporal distribution of debris flows,and most debris flows occurred between June and August,with the incidence during the nighttime higher than that during the daytime. Furthermore,precipitation data measured by 152 meteorological stations were utilized to investigate the characteristics of rainfalls that triggered these debris flows. It indicates that debris-flow triggering rainfalls are below 25 mm/day in most cases,and rainfalls that triggered a group of debris flow events are generally greater than those which triggered a single debris flow event. Moreover,this study reveals that the present rain gauge network is too sparse for debris flow forecast.

Keyword泥石流 分布规律 降水特征 四川
Subject AreaP642.23
Indexed ByCSCD
Funding Organization四川省科技计划项目(2015SZ0214) ; 国家自然科学基金项目(41671013)
Citation statistics
Cited Times:4[CSCD]   [CSCD Record]
Document Type期刊论文
First 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
杨红娟,韦方强,马振峰,等. 四川省泥石流灾害的时空分布规律和降水特征[J]. 灾害学,2017,32(4):102-107.
APA 杨红娟,韦方强,马振峰,&江玉红.(2017).四川省泥石流灾害的时空分布规律和降水特征.灾害学,32(4),102-107.
MLA 杨红娟,et al."四川省泥石流灾害的时空分布规律和降水特征".灾害学 32.4(2017):102-107.
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