New Approach for the Extraction Method of Landslide-Prone Slopes Using Geomorphological Analysis: Feasibility Study in the Shikoku Mountains, Japan
| Autor: | Takatsugu Ozaki, Akihiko Wakai, Shinichi Tosa, Takayuki Mayumi, Osamu Yokoyama, Kazunori Hayashi, Takanari Yamasaki, Takashi Kimura, Go Sato |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
021110 strategic
defence & security studies 05 social sciences 0211 other engineering and technologies 0507 social and economic geography Landslide 02 engineering and technology Extraction methods Geomorphological analysis Safety Risk Reliability and Quality Digital elevation model 050703 geography Engineering (miscellaneous) Geomorphology Slope stability analysis Geology |
| Zdroj: | Journal of Disaster Research. 16:618-625 |
| ISSN: | 1883-8030 1881-2473 |
| Popis: | In recent years, airborne laser scanning has been used for terrain surveys of broad areas in Japan. This study attempted to extract the landslide-prone slope based on geomorphological and slope stability analyses using Digital Elevation Model obtained by airborne laser scanning. The study site is located in the mountainous region of the Shikoku Mountains, where landslides occur on the gentle slope deformed by mass rock creeps. Implementing slope stability analysis to incorporate “potential to increase pore water pressure” found that landslides occur in areas with low factor of safety. In the future, it is expected that the method developed in this study could contribute to the planning of basin-based disaster management. |
| Databáze: | OpenAIRE |
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