气候变化领域集成服务门户(CCPortal): Rainfall Intensity Temporal Patterns Affect Shallow Landslide Triggering and Hazard Evolution

CCPortal

DOI	10.1029/2019GL085994
	Rainfall Intensity Temporal Patterns Affect Shallow Landslide Triggering and Hazard Evolution
	Fan L.; Lehmann P.; Zheng C.; Or D.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:1
英文摘要	A characteristic of rainfall-induced landslides is the gradual loading by infiltrating rainwater that weakens the soil mantle and could progress to abrupt soil mass release. The temporal patterns of similar rainfall amounts affect the hydrological response of a catchment and thus influence landslide dynamics. We use a novel catchment scale landslide hydromechanical triggering model to systematically study how different asymmetric distributions of rainfall intensities affect landslide dynamics and hazard evolution. Evaluating rainfall events with similar durations and total amounts shows that early rainfall peak intensity exerts stronger destabilizing effects, relative to delayed rainfall peak intensity. Intense rainfall events reduce landslide triggering relative to uniform-intensity rainfall events due to reduced water infiltration. With advances in highly resolved and real-time precipitation observations, the study offers a means for improving prediction of landslide timing and hazard evolution and identifying hydrological scenarios that enhance landslide activity. ©2019. American Geophysical Union. All Rights Reserved.
英文关键词	Catchments; Hazards; Infiltration; Rain; Runoff; Asymmetric distribution; Destabilizing effect; Hydrological response; Hydrological scenarios; Landslide hazard; Landslide prediction; Rainfall induced landslides; Rainfall intensity; Landslides; catchment; hazard assessment; hydrological response; landslide; precipitation (climatology); precipitation intensity; rainfall; rainwater
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170887
作者单位	Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, China; State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, China; Soil and Terrestrial Environmental Physics (STEP), Institute of Biogeochemistry and Pollutant Dynamics (IBP), ETH Zurich, Zurich, Switzerland
推荐引用方式 GB/T 7714	Fan L.,Lehmann P.,Zheng C.,et al. Rainfall Intensity Temporal Patterns Affect Shallow Landslide Triggering and Hazard Evolution[J],2020,47(1).
APA	Fan L.,Lehmann P.,Zheng C.,&Or D..(2020).Rainfall Intensity Temporal Patterns Affect Shallow Landslide Triggering and Hazard Evolution.Geophysical Research Letters,47(1).
MLA	Fan L.,et al."Rainfall Intensity Temporal Patterns Affect Shallow Landslide Triggering and Hazard Evolution".Geophysical Research Letters 47.1(2020).