IMHE OpenIR  > 山地灾害与地表过程重点实验室
Clayey Landslide Initiation and Acceleration Strongly Modulated by Soil Swelling
Schulz, William H.1; Smith, Joel B.1; Wang, Gonghui2; Jiang, Yao2,3; Roering, Joshua J.4
2018-02-28
Source PublicationGEOPHYSICAL RESEARCH LETTERS
ISSN0094-8276
Volume45Issue:4Pages:1888-1896
SubtypeArticle
Contribution Rank3
AbstractLargely unknown mechanisms restrain motion of clay-rich, slow-moving landslides that are widespread worldwide and rarely accelerate catastrophically. We studied a clayey, slow-moving landslide typical of thousands in Northern California, USA, to decipher hydrologic-mechanical interactions that modulate landslide dynamics. Similar to some other studies, observed pore-water pressures correlated poorly with landslide reactivation and speed. In situ and laboratory measurements strongly suggested that variable pressure along the landslide's lateral shear boundaries resulting from seasonal soil expansion and contraction modulated its reactivation and speed. Slope-stability modeling suggested that the landslide's observed behavior could be predicted by including transient swell pressure as a resistance term, whereas modeling considering only transient hydrologic conditions predicted movement five to six months prior to when it was observed. All clayey soils swell to some degree; hence, our findings suggest that swell pressure likely modulates motion of many landslides and should be considered to improve forecasts of clayey landslide initiation and mobility.
KeywordSLOW-MOVING LANDSLIDES PORE-PRESSURE FEEDBACK NORTHERN CALIFORNIA CORTINA-DAMPEZZO MONITORING DATA EARTHFLOWS FLOW MOVEMENT MOBILITY MODEL
DOI10.1002/2017GL076807
Indexed BySCI
WOS KeywordSLOW-MOVING LANDSLIDES ; PORE-PRESSURE FEEDBACK ; NORTHERN CALIFORNIA ; CORTINA-DAMPEZZO ; MONITORING DATA ; EARTHFLOWS ; FLOW ; MOVEMENT ; MOBILITY ; MODEL
Language英语
Funding ProjectU.S. Geological Survey Landslide Hazards Program ; Center Research for 2017 Collaborative Research of the Disaster Prevention Research Institute, Kyoto University[28A-04] ; NASA[NNX15AR59G]
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000427564300022
Funding OrganizationU.S. Geological Survey Landslide Hazards Program ; Center Research for 2017 Collaborative Research of the Disaster Prevention Research Institute, Kyoto University ; NASA
PublisherAMER GEOPHYSICAL UNION
Citation statistics
Cited Times:14[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/22860
Collection山地灾害与地表过程重点实验室
Affiliation1.US Geol Survey, Box 25046, Denver, CO 80225 USA;
2.Kyoto Univ, Disaster Prevent Res Inst, Uji, Kyoto, Japan;
3.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu, Sichuan, Peoples R China;
4.Univ Oregon, Dept Geol Sci, Eugene, OR 97403 USA
Recommended Citation
GB/T 7714
Schulz, William H.,Smith, Joel B.,Wang, Gonghui,et al. Clayey Landslide Initiation and Acceleration Strongly Modulated by Soil Swelling[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(4):1888-1896.
APA Schulz, William H.,Smith, Joel B.,Wang, Gonghui,Jiang, Yao,&Roering, Joshua J..(2018).Clayey Landslide Initiation and Acceleration Strongly Modulated by Soil Swelling.GEOPHYSICAL RESEARCH LETTERS,45(4),1888-1896.
MLA Schulz, William H.,et al."Clayey Landslide Initiation and Acceleration Strongly Modulated by Soil Swelling".GEOPHYSICAL RESEARCH LETTERS 45.4(2018):1888-1896.
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