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    題名: Fractal analysis of rainfall-induced landslide and debris flow spread distribution in the Chenyulan Creek Basin, Taiwan
    作者: Zon-Yee Yang;Hamid Reza Pourghasemi;Yen-Hung Lee
    關鍵詞: landslide distribution;box dimension;two-point correlation dimension;Taiwan
    日期: 2016-02-02
    上傳時間: 2016-04-22 13:23:52 (UTC+8)
    出版者: China University of Geosciences
    摘要: The Chenyulan Stream in Central Taiwan follows the Chenyulan fault line which is a major boundary fault in Taiwan. In recent years, many destructive landslides have occurred in the Chenyulan Creek Basin after heavy rainfall accompanied by several strong typhoons. Three examples of landslide distributions in the Chenyulan Creek Basin, before and after 1996 and after 2004 are analyzed. The box dimension and two-point correlation dimension are employed to describe the landslide area size distribution and distance distribution between every two landslides, respectively. It is found that the number of landslides increased in this period. However, the average landslide area decreased. The correlation dimension gradually increased from 1.15 to 1.32 during this period (before and after 1996 and after 2004). This implies that the landslide distribution in the Chenyulan Creek Basin has become diffuse and extensive. The box dimension value shows the degree of the landslide density occupied in a space. The box dimension also increased from 0.3 to 0.69 during this period. The increasing box dimension means that the landslide presented in this creek basin has gradually increased. This indicates that the slopes of this creek basin have become more unstable and susceptible.
    關聯: Journal of Earth Sciences 27(1), pp.151-159
    DOI: 10.1007/s12583-016-0633-4
    顯示於類別:[土木工程學系暨研究所] 期刊論文


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