Climatological and geological controls on seismic earthflows in coastal areas
Zhao, Bo
刊名CATENA
2024-02-01
卷号235页码:20
关键词Seismic earthflow Coastal area Spatial distribution Controls Mobility
ISSN号0341-8162
DOI10.1016/j.catena.2023.107692
英文摘要

Seismic earthflows, as special seismic landslides, have occurred in several recent coastal earthquakes, causing catastrophic consequences, but few studies have focused on these landslides. Thus, this study adopts cases induced by recent earthquakes, e.g., the 2018 Palu, 2018 Eastern Iburi, 2018 Lombok and 2022 Pasaman earthquakes, to analyze the characteristics of occurrence and movement. The results show that the Palu, Eastern Iburi, Lombok and Pasaman events induced 8, 7006, 1155 and 33 typical earthflows, respectively, which are in two material layers: volcanic deposits (Eastern Iburi, Lombok and Pasaman events) and alluvial deposits (Palu event). Earthflows in volcanic deposits are very sensitive to rainfall; all earthflows occur in high-rainfall areas, and they are shallow landslides. The corresponding average mobility values (H/L) range from approximately 0.20 similar to 0.35. The earthflows induced by the Palu event exhibit extremely high mobility levels (average H/L = 0.021). Different liquefied layers could explain the liquefaction mechanism of earthflows in the two material layers. Additionally, compared to other seismic landslides, earthflows occur on gentler hills and have higher mobility.

资助项目National Natural Science Foundation of China[U22A20603] ; National Natural Science Foundation of China[42007273] ; Science and Technology Research Program of the Institute of Mountain Hazards and Environment, Chinese Academy of Sciences[IMHE-ZYTS-03] ; Science and Technology Research Program of the Institute of Mountain Hazards and Environment, Chinese Academy of Sciences[IMHE-ZDRW-03] ; Science and Technology Development Fund ; State Key Laboratory of Internet of Things for Smart City (University of Macau) ; [SKL-IOTSC (UM) -2021-2023] ; [SKL-IoTSC (UM) -2024-2026/ORP/GA09/2023]
WOS关键词EARTHQUAKE-INDUCED LANDSLIDES ; 2018 SULAWESI EARTHQUAKE ; DISTANCE FLOW-SLIDE ; SPATIAL-DISTRIBUTION ; CHINA ; PALU ; RUPTURE ; LOMBOK ; LIQUEFACTION ; TOPOGRAPHY
WOS研究方向Geology ; Agriculture ; Water Resources
语种英语
出版者ELSEVIER
WOS记录号WOS:001123778400001
资助机构National Natural Science Foundation of China ; Science and Technology Research Program of the Institute of Mountain Hazards and Environment, Chinese Academy of Sciences ; Science and Technology Development Fund ; State Key Laboratory of Internet of Things for Smart City (University of Macau)
内容类型期刊论文
源URL[http://ir.imde.ac.cn/handle/131551/57790]  
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
通讯作者Zhao, Bo
作者单位Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Peoples R China
推荐引用方式
GB/T 7714
Zhao, Bo. Climatological and geological controls on seismic earthflows in coastal areas[J]. CATENA,2024,235:20.
APA Zhao, Bo.(2024).Climatological and geological controls on seismic earthflows in coastal areas.CATENA,235,20.
MLA Zhao, Bo."Climatological and geological controls on seismic earthflows in coastal areas".CATENA 235(2024):20.
个性服务
查看访问统计
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。


©版权所有 ©2017 CSpace - Powered by CSpace