气候变化领域集成服务门户(CCPortal): An Empirical Power Density-Based Friction Law and Its Implications for Coherent Landslide Mobility

CCPortal

DOI	10.1029/2020GL087581
	An Empirical Power Density-Based Friction Law and Its Implications for Coherent Landslide Mobility
	Deng Y.; Yan S.; Scaringi G.; Liu W.; He S.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:11
英文摘要	The evolution of the shear resistance at the base of a coherent landslide body can effectively control its dynamic behavior. High-velocity rotary shear experiments have allowed scientists to explore stress-strain conditions close to those found in large landslides and faults. These experiments have led to two alternative models being proposed, which describe the evolution of the shear resistance through friction laws that depend either on normal stress or on velocity. Here, we discuss an integrated approach, first proposed to study seismic fault behavior, that reconciles these two models under a single parameter—the power density—which we utilize for the first time to investigate landslide dynamics. Using thermodynamic and process-based considerations, different soil and rock types can be related to different weakening mechanisms, which in turn can determine different landslide behaviors. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Landslides; Shear flow; Dynamic behaviors; Integrated approach; Landslide dynamics; Landslide mobility; Power densities; Shear resistances; Single parameter; Stress-strain condition; Friction; empirical analysis; friction; landslide; power law; rockfall; seismic response; shear stress; soil mechanics; stress-strain relationship; thermodynamics
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/170313
作者单位	Key Laboratory of Mountain Hazards and Surface Process, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, China; University of Chinese Academy of Sciences, Beijing, China; Institute of Hydrogeology, Engineering Geology and Applied Geophysics, Faculty of Science, Prague, Czech Republic; Center for Excellence in Tibetan Plateau Earth Sciences, Chinese Academy of Sciences, Beijing, China
推荐引用方式 GB/T 7714	Deng Y.,Yan S.,Scaringi G.,et al. An Empirical Power Density-Based Friction Law and Its Implications for Coherent Landslide Mobility[J],2020,47(11).
APA	Deng Y.,Yan S.,Scaringi G.,Liu W.,&He S..(2020).An Empirical Power Density-Based Friction Law and Its Implications for Coherent Landslide Mobility.Geophysical Research Letters,47(11).
MLA	Deng Y.,et al."An Empirical Power Density-Based Friction Law and Its Implications for Coherent Landslide Mobility".Geophysical Research Letters 47.11(2020).