Mean slope-angle frequency distribution and size frequency distribution of landslide masses in Higashikubiki area, Japan |
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| Authors: | Junko Iwahashi Shiaki Watanabe Takahiko Furuya |
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| Institution: | a Geographical Survey Institute, Kitasato-1, Tsukuba 305-0811, Japan;b Drico Co., Inc., Ginza 4-9-13, Chuo-ku, Tokyo 104-0061, Japan;c Graduate School of Science and Technology, Chiba University, Yayoi-cho 1-33, Inage-ku, Chiba 263-8522, Japan |
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| Abstract: | Landslide mass size frequency distributions and mean slope-angle frequency distributions were calculated for slump, slide, and creep type landslides in the Higashikubiki area. Mean slope-angle frequency distributions closely approximated Weibull distributions. Size frequency distributions show power-law dependencies. Both can be explained by modeling landslides as linked uniform blocks in tensile force. Power coefficients for size frequency distributions were 2.01–2.32 (approximation to power functions) or 2.10–2.24 (approximation to Pareto distributions). |
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| Keywords: | Landslide GIS Digital elevation model Weibull distribution Fractal Self-organised criticality |
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