Volcaniclastic debris avalanche on Motomachi area of Izu-Oshima, Japan, triggered by severe storm: Phenomenon and mechanisms
文献类型：期刊论文
| 作者 | Wang, Gonghui1; Jiang, Yao2,4 ; Chang, Chengrui3; Doi, Issei1; Kamai, Toshitaka1
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| 刊名 | ENGINEERING GEOLOGY
 |
| 出版日期 | 2019-03-09 |
| 卷号 | 251页码:24-36 |
| 关键词 | Tephra slope Shallow landslides Fluidization process Heavy storm Wind load Vibration of ground |
| ISSN号 | 0013-7952 |
| DOI | 10.1016/j.enggeo.2019.02.003 |
| 产权排序 | 2 |
| 通讯作者 | Wang, Gonghui(wanggh@landslide.dpri.kyoto-u.ac.jp) |
| 文献子类 | Article |
| 英文摘要 | Heavy rainfall and strong wind associated with Typhoon Wipha hit Izu-Oshima Island, Japan, and triggered catastrophic landslides on the western slope of Oshima Volcano on 16 October 2013. These landslides were shallow but large in scale, and the displaced landslide materials were characterized by rapid and long runout movement. A massive landslide resulted in 36 people dead and 3 missing, with 46 buildings being completely destroyed in the downstream area of Motomachi district. To understand the initiation and movement of these shallow landslides, we surveyed the landslide area and found that in addition to heavy rainfall, strong wind may also have played a key role in increasing the instability of the slopes. We took samples from the source areas and examined their static and dynamic shear behaviors under naturally drained or undrained conditions. Test results showed that high pore-water pressure can be built up and maintained within the displaced landslide material and increase landslide mobility, even though the thickness of displaced landslide materials is 0.7-1.2 m. This may then give a rational explanation on the fluidization process of the displaced landslide materials. We also examined the windthrow features of trees subjected to different wind speed through monitoring the ground motion by seismometer and portable anemometer, and then performed cyclic shear tests on the materials laying above the sliding surface. The test results suggest that the windthrow may have promoted the buildup of excess pore-water pressure within the saturated soil layer and thus favoured the occurrence of slope failure. Therefore, it is suggested that in the prediction of shallow landslides on forested slopes subjected to heavy storm, both the effects of rainfall and strong wind should be taken into account. |
| WOS关键词 | RAINFALL-INDUCED LANDSLIDES ; STABILITY ANALYSIS ; SATURATED SANDS ; OCTOBER 16 ; WIND ; TREES ; LIQUEFACTION ; FREQUENCIES ; EARTHQUAKE ; PREDICTION |
| 资助项目 | Joint Usage/Collaborative Research Project of the Disaster Prevention Research Institute, Kyoto University[28A-04] ; MEXT KAKENHI[25900002] |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000464480600003 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | Joint Usage/Collaborative Research Project of the Disaster Prevention Research Institute, Kyoto University ; MEXT KAKENHI |
| 源URL | [http://ir.imde.ac.cn/handle/131551/25892]  |
| 专题 | 中国科学院水利部成都山地灾害与环境研究所 |
| 通讯作者 | Wang, Gonghui |
| 作者单位 | 1.Kyoto Univ, Disaster Prevent Res Inst, Res Ctr Landslides, Uji, Kyoto 6110011, Japan; 2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China; 3.Kyoto Univ, Grad Sch Sci, Uji, Kyoto 6110011, Japan; 4.Kyoto Univ, Grad Sch Sci, Uji, Kyoto, Japan |
| 推荐引用方式 GB/T 7714 | Wang, Gonghui,Jiang, Yao,Chang, Chengrui,et al. Volcaniclastic debris avalanche on Motomachi area of Izu-Oshima, Japan, triggered by severe storm: Phenomenon and mechanisms[J]. ENGINEERING GEOLOGY,2019,251:24-36. |
| APA | Wang, Gonghui,Jiang, Yao,Chang, Chengrui,Doi, Issei,&Kamai, Toshitaka.(2019).Volcaniclastic debris avalanche on Motomachi area of Izu-Oshima, Japan, triggered by severe storm: Phenomenon and mechanisms.ENGINEERING GEOLOGY,251,24-36. |
| MLA | Wang, Gonghui,et al."Volcaniclastic debris avalanche on Motomachi area of Izu-Oshima, Japan, triggered by severe storm: Phenomenon and mechanisms".ENGINEERING GEOLOGY 251(2019):24-36. |
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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