Journal cover Journal topic
Natural Hazards and Earth System Sciences An interactive open-access journal of the European Geosciences Union
https://doi.org/10.5194/nhess-2017-264
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.
Research article
04 Oct 2017
Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Natural Hazards and Earth System Sciences (NHESS).
Scale and spatial distribution assessment of rainfall-induced landslides along mountain roads
Chih-Ming Tseng1, Yie-Ruey Chen1, and Szu-Mi Wu2 1Department of Land Management and Development, Chang Jung Christian University, Tainan, 71101, Taiwan
2Chen-Du Construction Limited, Taoyuan, 33059, Taiwan
Abstract. This study focused on landslides along mountain roads that were caused by Typhoons Nanmadol (2011) and Kong-rey (2013). Image interpretation techniques were employed to interpret satellite images captured before and after the typhoons to derive the changes in slope surfaces. The multivariate hazard evaluation method was adopted to establish a landslide susceptibility assessment model. We then mapped landslide susceptibility and locations to determine the relationship between the spatial distribution of landslide areas and the natural environment along mountain roads. The results can serve as a reference for preventing and mitigating slope disasters on mountain roads.

Citation: Tseng, C.-M., Chen, Y.-R., and Wu, S.-M.: Scale and spatial distribution assessment of rainfall-induced landslides along mountain roads, Nat. Hazards Earth Syst. Sci. Discuss., https://doi.org/10.5194/nhess-2017-264, in review, 2017.
Chih-Ming Tseng et al.
Chih-Ming Tseng et al.
Chih-Ming Tseng et al.

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Short summary
The multivariate evaluation method was applied to establish a landslide susceptibility assessment model along mountains roads. The relationships between the rainfall index, instability index, and landslide occurrence indicate that for a high instability index, even a small rainfall event could trigger a landslide. The instability index thus can effectively reflect landslide susceptibility. The results could serve as a reference for the prevention and mitigation of slope disasters on hillsides.
The multivariate evaluation method was applied to establish a landslide susceptibility...
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