The effects of slope length and slope gradient on the size distributions of loess slides: Field observations and simulations

doi:10.1016/j.geomorph.2017.10.020

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 山地灾害与地表过程重点实验室

	The effects of slope length and slope gradient on the size distributions of loess slides: Field observations and simulations
	Qiu, Haijun 1,2,3; Cui, Peng2 ; Regmi, Amar Deep 2; Hu, Sheng 1; Wang, Xingang 4; Zhang, Yuzhu 1
刊名	GEOMORPHOLOGY
	2018
卷号	300 页码:69-76
关键词	Loess Slides Size Distribution Simulations Rollover
ISSN号	0169-555X
DOI	10.1016/j.geomorph.2017.10.020
通讯作者	Haijun Qiu
英文摘要	In this study, we characterize and consider the effects of slope length and slope gradient on the size distributions of loess slides. To carry out this study, we employ data on 275 loess slides within Zhidan County, Central Loess Plateau, China. These data were collected in the field and supplemented by the interpretation of remote sensing images. Both the field observations and slope stability analysis show that loess slide size increases with the slope length. Slide sizes is significantly correlated with slope length, showing a power law relationship in both cases. However, the simulation results show that slope gradient is not associated with loess slide size. The main part of the link between slope gradient and slide size seen in the observations is only apparent, as indicated by the strong connection between slope gradient and length. Statistical analysis of the field observations reveals that slope gradient decreases with increasing slope length, and this correlation interferes with the potential relationship between landslide sizes and slope gradient seen in the field observations. In addition, the probability densities of the areas of loess slides occurring on slopes of different slope lengths are determined using kernel density estimation. This analysis shows that slope length controls the rollover of the frequency-size distribution of loess slides. The scaling exponent increases with slope length. (C) 2017 Elsevier B.V. All rights reserved.
语种	英语
WOS记录号	WOS:000418981700005
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/20812]
专题	成都山地灾害与环境研究所_山地灾害与地表过程重点实验室
作者单位	1.Northwest Univ, Coll Urban & Environm Sci, Xian 710127, Shaanxi, Peoples R China 2.Chinese Acad Sci, Inst Mt Hazard & Environm, Chengdu 610041, Sichuan, Peoples R China 3.Northwest Univ, Inst Earth Surface Syst & Hazards, Xian 710127, Shaanxi, Peoples R China 4.Northwest Univ, Dept Geol, State Key Lab Continental Dynam, Xian 710069, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Qiu, Haijun,Cui, Peng,Regmi, Amar Deep,et al. The effects of slope length and slope gradient on the size distributions of loess slides: Field observations and simulations[J]. GEOMORPHOLOGY,2018,300:69-76.
APA	Qiu, Haijun,Cui, Peng,Regmi, Amar Deep,Hu, Sheng,Wang, Xingang,&Zhang, Yuzhu.(2018).The effects of slope length and slope gradient on the size distributions of loess slides: Field observations and simulations.GEOMORPHOLOGY,300,69-76.
MLA	Qiu, Haijun,et al."The effects of slope length and slope gradient on the size distributions of loess slides: Field observations and simulations".GEOMORPHOLOGY 300(2018):69-76.