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The effects of slope length and slope gradient on the size distributions of loess slides: Field observations and simulations
Qiu, Haijun1,2,3; Cui, Peng2; Regmi, Amar Deep2; Hu, Sheng1; Wang, Xingang4; Zhang, Yuzhu1
2018
Source PublicationGEOMORPHOLOGY
ISSN0169-555X
Volume300Pages:69-76
SubtypeArticle
AbstractIn 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.
KeywordLoess Slides Size Distribution Simulations Rollover
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1016/j.geomorph.2017.10.020
WOS Subject ExtendedPhysical Geography ; Geology
Indexed BySCI
WOS KeywordBRITISH-COLUMBIA ; LANDSLIDE VOLUMES ; RIVER-BASIN ; FREQUENCY ; MAGNITUDE ; EROSION ; CHINA ; TOPOGRAPHY ; SEDIMENT ; HAZARDS
Language英语
WOS SubjectGeography, Physical ; Geosciences, Multidisciplinary
WOS IDWOS:000418981700005
Funding OrganizationNational Natural Science Foundation of China(41771539) ; Chinese Academy of Sciences(131551KYSB20160002)
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:33[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/20812
Collection山地灾害与地表过程重点实验室
Corresponding AuthorQiu, Haijun
Affiliation1.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
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Corresponding Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
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.
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