| DOI: | 10.1002/grl.50437
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| 论文题名: | Dynamic landslide processes revealed by broadband seismic records |
| 作者: | Yamada M.; Kumagai H.; Matsushi Y.; Matsuzawa T.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8862
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| EISSN: | 1944-8593
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| 出版年: | 2013
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| 卷: | 40, 期:12 | | 起始页码: | 2998
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| 结束页码: | 3002
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| 语种: | 英语
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| 英文关键词: | Akatani
; deep-seated landslide
; high-frequency
; landslide
; low-frequency
; seismic data
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| Scopus关键词: | Akatani
; Coefficient of frictions
; High frequency HF
; Low-frequency
; Physical parameters
; Seismic datas
; Seismic recording
; Topographic surveys
; Friction
; Liquefaction
; Seismology
; Tribology
; Landslides
; broadband data
; friction
; landslide
; liquefaction
; seismic data
; seismicity
; sliding
; slope failure
; topographic mapping
; Honshu
; Japan
; Kii Peninsula
; Kinki
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| 英文摘要: | We use broadband seismic recordings to trace the dynamic process of the deep-seated Akatani landslide that occurred on the Kii Peninsula, Japan, which is one of the best recorded large slope failures. Combining analyses of the seismic records with precise topographic surveys done before and after the event, we can resolve a detailed time history of the mass movement. During 50 s of the large landslide, we observe a smooth initiation, acceleration with changes in basal friction, and reversal of the momentum when the mass collides with the opposite valley wall. Of particular importance is the determination of the dynamic friction during the landslide. The coefficient of friction is estimated to be 0.56 at the beginning of the event and drops to 0.38 for most of the sliding. The change in the frictional level on the sliding surface may be due to liquefaction or breaking of rough patches and contributes to the extended propagation of the large landslide. Key Points We show the changing values of the sliding friction of a landslide The change of friction may be due to liquefaction or breaking of rough patches These physical parameters will help to simulate the motion of mass failure ©2013. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84880561784&doi=10.1002%2fgrl.50437&partnerID=40&md5=dac873566a3c94b62818aff50e249b72
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/6126
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Disaster Prevention Research Institute, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
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| Recommended Citation: | |
Yamada M.,Kumagai H.,Matsushi Y.,et al. Dynamic landslide processes revealed by broadband seismic records[J]. Geophysical Research Letters,2013-01-01,40(12).
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