干旱区生态环境知识资源中心(Arid): Antecedent rainfall as a critical factor for the triggering of debris flows in arid regions

Arid

DOI	10.5194/nhess-23-1079-2023
	Antecedent rainfall as a critical factor for the triggering of debris flows in arid regions
	Siman-Tov, Shalev; Marra, Francesco
通讯作者	Siman-Tov, S
来源期刊	NATURAL HAZARDS AND EARTH SYSTEM SCIENCES
ISSN	1561-8633
EISSN	1684-9981
出版年	2023
卷号	23 期号:3 页码:1079-1093
英文摘要	In arid regions, debris flows (DFs) are occasionally observed when heavy rainfall hits steep slopes with unconsolidated materials. Despite the related hazards, not much is yet known about the critical rainfall conditions for DF initiation in dryland areas mainly due to a lack of observations and data. In this study, we use high-resolution digital surface models and orthophotos to detect DFs on the arid slopes of the Dead Sea's northwestern margins, as well as weather radar rainfall estimates for the characterization of the triggering and non-triggering storms. We identify deposits from over 40 relatively small DFs that occurred between 2013 and 2019. We divide them into four groups based on their spatial distribution and triggering period, and we identify the most likely triggering storms based on weather radar data and additional information. We show that the DFs were likely triggered by an intense convective cell (lasting less than 45 min) which was preceded by non-negligible rainfall amounts (about 10 mm) delivered during the storm. Comparing triggering and non-triggering storms, we observed that rain intensity alone is insufficient to explain the phenomena and discuss the possibility that antecedent rainfall could represent a critical factor for the triggering of DFs on steep slopes of arid environments.
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000948675800001
WOS关键词	DEAD-SEA ; CONVECTIVE RAINFALL ; SHALLOW LANDSLIDES ; DURATION CONTROL ; FAN-DELTAS ; THRESHOLDS ; IDENTIFICATION ; INTENSITY ; DESERT ; STRATIGRAPHY
WOS类目	Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences ; Water Resources
WOS研究方向	Geology ; Meteorology & Atmospheric Sciences ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/397895
推荐引用方式 GB/T 7714	Siman-Tov, Shalev,Marra, Francesco. Antecedent rainfall as a critical factor for the triggering of debris flows in arid regions[J],2023,23(3):1079-1093.
APA	Siman-Tov, Shalev,&Marra, Francesco.(2023).Antecedent rainfall as a critical factor for the triggering of debris flows in arid regions.NATURAL HAZARDS AND EARTH SYSTEM SCIENCES,23(3),1079-1093.
MLA	Siman-Tov, Shalev,et al."Antecedent rainfall as a critical factor for the triggering of debris flows in arid regions".NATURAL HAZARDS AND EARTH SYSTEM SCIENCES 23.3(2023):1079-1093.