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Behavior and Mechanism of Earthquake-Induced Landslides within Pre-Existing Landslide Topography: the Case of the 2004 Mid-Niigata Prefecture Earthquake, Japan
| Content Provider | Semantic Scholar |
|---|---|
| Author | Hanaoka, Masaaki Nozawa, Einosuke Momose, Atsushi Sasaki, Kenji |
| Copyright Year | 2006 |
| Abstract | The Mid-Niigata Prefecture earthquake known as the Chuetsu earthquake triggered numerous slope failures, including landslides, in the Chuetsu region. Among those landslides, about 40% occurred in the pre-existing landslide topography areas. We studied several representative landslides in this area, and discuss two of them in this paper; the Shiotani-kamisawagawa and the Amayachi landslides. These are located in the Imo-gawa river basin, the most heavily damaged area during this earthquake and strong aftershocks. The comprehensive studies, include drillings, revealed that these two landslides occurred in pre-existed landslide areas. They also reveal that the Shiotani-kamisawagawa landslide occurred deeper than older one, whereas the Amayachi landslide occurred almost along the older landslide. The main triggering factor of those landslides is obviously the Chuetsu earthquake, but the heavy rainfall, the geological composition and structure are considered to be additional factors that contributed to the occurrence of the landslides. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.interpraevent.at/palm-cms/upload_files/Publikationen/Tagungsbeitraege/2006_1_35.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
