Insights into the mobility characteristics of seismic earthflows related to the Palu and Eastern Iburi earthquakes
文献类型：期刊论文
| 作者 | Zhao, Bo4; Su, Lijun1,2,4 ; Wang, Yunsheng3; Ji, Feng3; Li, Weili3; Tang, Chenxiao4
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| 刊名 | GEOMORPHOLOGY
 |
| 出版日期 | 2021-10-15 |
| 卷号 | 391页码:17 |
| 关键词 | Seismic earthflows Palu earthquake Eastern Iburi earthquake Mobility characteristics |
| ISSN号 | 0169-555X |
| DOI | 10.1016/j.geomorph.2021.107886 |
| 英文摘要 | As an important indicator for landslide hazard and risk assessments, landslide mobility has attracted considerable attention in the literature, yet few studies have investigated seismic earthflows. Therefore, the earthflows induced by the 2018 Mw 7.5 Palu earthquake (Indonesia) and the 2018 Mw 6.5 Eastern Iburi earthquake (Japan) and their mobility characteristics were analyzed. Long-term irrigation for cultivation of wet rice and heavy rainfall produced by Typhoon Jebi introduced substantial moisture into alluvial fans (Palu earthquake) and pyroclastic fall deposits (Eastern Iburi earthquake), respectively, and seismic shaking liquefied these moist deposits, which consequently traveled long distances. Four earthflows that were triggered on very gentle slopes of 1-3 degrees by the Palu event exhibited very high mobility levels (H/L) of 0.0129, 0.01125, 0.0209 and 0.0271 (average H/L = 0.018), whereas 7058 earthflows triggered by the Eastern Iburi event exhibited an average mobility of 0.33. Different liquefied layers were located below or above the low permeability layer, and movement restrictions and complex final flow disturbances could be responsible for obvious mobility differences triggered by the two seismic events. However, the earthflow mobility induced by the Eastern Iburi earthquake was obviously higher than that of coseismic rock landslides worldwide and is described by the following relationship: H/L = 1.46-0.24 x log(10) (earthflow_area). Furthermore, the earthflow area, peak ground acceleration (PGA) and slope angle all have increase influences on mobility. (C) 2021 Elsevier B.V. All rights reserved. |
| WOS关键词 | 2018 SULAWESI EARTHQUAKE ; DISTANCE FLOW-SLIDE ; LONG-RUNOUT ; SPATIAL-DISTRIBUTION ; INDUCED LANDSLIDES ; WENCHUAN EARTHQUAKE ; HOKKAIDO ; FAILURE ; CHINA ; LIQUEFACTION |
| 资助项目 | National Natural Science Foundation of China[42007273] ; Special Assistant Researcher Foundation of the Chinese Academy of Sciences ; China Postdoctoral Science Foundation[2020M673292] ; China Postdoctoral Science Foundation[2021T140650] ; IMHE Youth ST Foundation[SDS-QN-2106] |
| WOS研究方向 | Physical Geography ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000696636700004 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; Special Assistant Researcher Foundation of the Chinese Academy of Sciences ; China Postdoctoral Science Foundation ; IMHE Youth ST Foundation |
| 源URL | [http://ir.imde.ac.cn/handle/131551/56239]  |
| 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 | Su, Lijun |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.China Pakistan Joint Res Ctr Earth Sci, Islamabad, Pakistan 3.Chengdu Univ Technol, State Key Lab Geohazard Prevent & Geoenvironm, Chengdu 610059, Peoples R China 4.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Earth Surface Processes, Chengdu 610041, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, Bo,Su, Lijun,Wang, Yunsheng,et al. Insights into the mobility characteristics of seismic earthflows related to the Palu and Eastern Iburi earthquakes[J]. GEOMORPHOLOGY,2021,391:17. |
| APA | Zhao, Bo,Su, Lijun,Wang, Yunsheng,Ji, Feng,Li, Weili,&Tang, Chenxiao.(2021).Insights into the mobility characteristics of seismic earthflows related to the Palu and Eastern Iburi earthquakes.GEOMORPHOLOGY,391,17. |
| MLA | Zhao, Bo,et al."Insights into the mobility characteristics of seismic earthflows related to the Palu and Eastern Iburi earthquakes".GEOMORPHOLOGY 391(2021):17. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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