DOI: 10.1007/s11069-020-04039-z
论文题名: Activity patterns and controlling factors of debris flows in the Upper Salween Alpine Valley
作者: Huang J. ; Xu H. ; Duan X. ; Li X. ; Wang P.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2020
卷: 103, 期: 1 起始页码: 1367
结束页码: 1383
语种: 英语
中文关键词: Controlling factors
; Debris flow
; Hazard mechanisms
; Nu river
; Upper Salween
英文关键词: activity pattern
; debris flow
; disaster management
; formation mechanism
; gully
; mountain region
; precipitation intensity
; slope dynamics
; structural control
; valley
; China
英文摘要: The frequency of debris flows in mountainous areas has increased in recent years, threatening sustainable development of mountainous communities. The Upper Salween Alpine Valley (USAV) experiences the most serious debris flow disasters in China. However, activity patterns and formation mechanisms of debris flow in this area are still unclear. We analyzed debris flow activity patterns and identified their key controlling factors in the USAV based on 66-year historical data, field records, remote sensing images, and geology, gravity, and precipitation characteristics. The results showed that (1) 200 contemporary debris flow gullies were distributed with a linear density of 0.64 gully/km. Twenty-four large-scale debris flow disasters occurred in the past 66 years; (2) the activity patterns of debris flow in the USAV were characterized by double rain season, nocturnal, high concealment, low frequency, and strong destructive force; (3) the USAV was a debris-flow-prone area with strong precipitation, strong gravity, and moderate geology driving forces. It belongs to loose material-controlled debris flow region. Our findings could contribute to the understanding of formation mechanisms of debris flows, and further improve prevention and mitigation of debris flow disasters in the USAV. © 2020, Springer Nature B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/168528
Appears in Collections: 气候变化与战略
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作者单位: Institute of International Rivers and Eco-Security, Yunnan University, Kunming, China; Yunnan Key Laboratory for International Rivers and Transboundary Eco-Security, Kunming, China
Recommended Citation:
Huang J.,Xu H.,Duan X.,et al. Activity patterns and controlling factors of debris flows in the Upper Salween Alpine Valley[J]. Natural Hazards,2020-01-01,103(1)