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Dynamic landslide processes revealed by broadband seismic records
https://nied-repo.bosai.go.jp/records/4072
https://nied-repo.bosai.go.jp/records/4072d0fd0d33-4b56-45a6-99e6-1c83a5b6e38c
| Item type | researchmap(1) | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 公開日 | 2023-03-30 | |||||||||||||
| タイトル | ||||||||||||||
| 言語 | en | |||||||||||||
| タイトル | Dynamic landslide processes revealed by broadband seismic records | |||||||||||||
| 言語 | ||||||||||||||
| 言語 | eng | |||||||||||||
| 著者 |
Masumi Yamada
× Masumi Yamada
× Hiroyuki Kumagai
× Yuki Matsushi
× Takanori Matsuzawa
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| 抄録 | ||||||||||||||
| 内容記述タイプ | Other | |||||||||||||
| 内容記述 | 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 50s 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. | |||||||||||||
| 言語 | en | |||||||||||||
| 書誌情報 |
en : GEOPHYSICAL RESEARCH LETTERS 巻 40, 号 12, p. 2998-3002 |
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| 出版者 | ||||||||||||||
| 言語 | en | |||||||||||||
| 出版者 | AMER GEOPHYSICAL UNION | |||||||||||||
| ISSN | ||||||||||||||
| 収録物識別子タイプ | ISSN | |||||||||||||
| 収録物識別子 | 0094-8276 | |||||||||||||
| DOI | ||||||||||||||
| 関連識別子 | 10.1002/grl.50437 | |||||||||||||
