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Topography and geology effects on travel distances of natural terrain landslides: Evidence from a large multi-temporal landslide inventory in Hong Kong
Gao, L.1,2; Zhang, L. M.3; Chen, H. X.4; Fei, K.1,2; Hong, Y.5
2021-10
Source PublicationEngineering Geology
ISSN0013-7952
Volume292Pages:106266
Abstract

Landslides pose threats to the safety and property of people living in mountainous areas like Hong Kong. Dependence of landslide travel distance on initial conditions and travel routes has broad implications for assessing the landslide risks. In this study, the controlling topographic and geologic factors for travel distances of open hillslope landslides and channelized debris flows are examined based on the Enhanced Natural Terrain Landslide Inventory (ENTLI) in Hong Kong with 11,622 records during the period of 1984–2013. The mean values of the horizontal travel distances of open hillslope landslides and channelized debris flows are 24.1 and 86.3 m, respectively. Correlations combining horizontal travel distances, volumes and fall heights of open hillslope landslides have been derived. The horizontal travel distances (L) and fall heights (H) are closely related for both types of landslides. The use of the L/H ratio alone as a representation of natural terrain landslide mobility is not suggested. Because of the entrainment of loose materials, the travel distances of channelized debris flows are enlarged significantly on colluvium lands (with mean value of 142.6 m), compared with those on weathered mantles (with mean value of 74.2 m).

KeywordDebris Flow Landslide Landslide Risk Rain-induced Landslides Travel Distance
DOI10.1016/j.enggeo.2021.106266
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaEngineering ; Geology
WOS SubjectEngineering, Geological ; Geosciences, Multidisciplinary
WOS IDWOS:000692696200025
PublisherELSEVIERRADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS
Scopus ID2-s2.0-85110224645
Fulltext Access
FWCI1.2465008
Citation statistics
Document TypeJournal article
CollectionUniversity of Macau
Corresponding AuthorGao, L.
Affiliation1.State Key Laboratory of Internet of Things for Smart City and Department of Civil and Environmental Engineering, University of Macau, Macao
2.Center for Ocean Research in Hong Kong and Macau (CORE), Macao
3.Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong
4.Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Department of Geotechnical Engineering, Tongji University, Shanghai, 200092, China
5.School of Civil Engineering and Environmental Sciences, University of Oklahoma, Norman, 73072, United States
First Author AffilicationUniversity of Macau
Corresponding Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Gao, L.,Zhang, L. M.,Chen, H. X.,et al. Topography and geology effects on travel distances of natural terrain landslides: Evidence from a large multi-temporal landslide inventory in Hong Kong[J]. Engineering Geology,2021,292:106266.
APA Gao, L.,Zhang, L. M.,Chen, H. X.,Fei, K.,&Hong, Y..(2021).Topography and geology effects on travel distances of natural terrain landslides: Evidence from a large multi-temporal landslide inventory in Hong Kong.Engineering Geology,292,106266.
MLA Gao, L.,et al."Topography and geology effects on travel distances of natural terrain landslides: Evidence from a large multi-temporal landslide inventory in Hong Kong".Engineering Geology 292(2021):106266.
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