Open AccessNew Approach for the Extraction Method of Landslide-Prone Slopes Using Geomorphological Analysis: Feasibility Study in the Shikoku Mountains, Japan
Author(s) -
Go Sato,
Takatsugu Ozaki,
Osamu Yokoyama,
Akihiko Wakai,
Kazunori Hayashi,
Takanari Yamasaki,
Shinichi Tosa,
Takayuki Mayumi,
Takashi Kimura
Publication year - 2021
Publication title -
journal of disaster research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.332
H-Index - 18
eISSN - 1883-8030
pISSN - 1881-2473
DOI - 10.20965/jdr.2021.p0618
Subject(s) - landslide , geology , digital elevation model , terrain , slope stability , elevation (ballistics) , extraction (chemistry) , geomorphology , landslide classification , structural basin , slope stability analysis , laser scanning , slope failure , geotechnical engineering , remote sensing , cartography , geography , laser , chemistry , chromatography , physics , geometry , mathematics , optics
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.