气候变化领域集成服务门户(CCPortal): Activity patterns and controlling factors of debris flows in the Upper Salween Alpine Valley

CCPortal

DOI	10.1007/s11069-020-04039-z
	Activity patterns and controlling factors of debris flows in the Upper Salween Alpine Valley
	Huang J.; Xu H.; Duan X.; Li X.; Wang P.
发表日期	2020
ISSN	0921030X
起始页码	1367
结束页码	1383
卷号	103 期号:1
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.
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
语种	英语
来源期刊	Natural Hazards
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/205729
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
推荐引用方式 GB/T 7714	Huang J.,Xu H.,Duan X.,et al. Activity patterns and controlling factors of debris flows in the Upper Salween Alpine Valley[J],2020,103(1).
APA	Huang J.,Xu H.,Duan X.,Li X.,&Wang P..(2020).Activity patterns and controlling factors of debris flows in the Upper Salween Alpine Valley.Natural Hazards,103(1).
MLA	Huang J.,et al."Activity patterns and controlling factors of debris flows in the Upper Salween Alpine Valley".Natural Hazards 103.1(2020).