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Multi-scale landslide susceptibility analysis along a mountain highway in Central Taiwan

机译：台湾中部山区公路沿线多尺度滑坡敏感性分析

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摘要

For the past decade, climate change has caused increasingly more frequent extreme rainfall events in Taiwan, during which concentrated and intense rainfall has induced large-scale flooding and landslides. Considering the urgency of protecting isolated villages and residential areas near highways from large-scale landslides, this study analyzed landslide susceptibility along Nantou County Road #89, in the upstream region of the Wu River in Taiwan. To assess landslide hazards spatially, landslide susceptibility analysis was implemented at the catchment scale. To predict landslide susceptibility, this study employed an atmospheric general circulation model with downscaling estimation. Information from boreholes was used to analyze the temporal behavior and complex mechanisms of large-scale landslides at the local scale. On the basis of the results, this paper discusses the different findings from the catchment- and local-scale analyses. For the major large-scale landslides, the rankings of landslide susceptibility values can be obtained to prioritize the remediation of the landslides. And the multiscale landslide susceptibility analysis could be applied to mountain highways with complex landslide hazard. (C) 2016 Published by Elsevier B.V.
机译：在过去的十年中，气候变化在台湾引起了越来越频繁的极端降雨事件，在此期间，集中而强烈的降雨引发了大规模的洪水和山体滑坡。考虑到保护高速公路附近的偏远村庄和居民区免受大规模滑坡影响的紧迫性，本研究分析了台湾吴河上游南投县89号公路沿线的滑坡敏感性。为了从空间上评估滑坡灾害，在流域尺度上进行了滑坡敏感性分析。为了预测滑坡易感性，本研究采用了大气总环流模型并进行了缩减估算。来自井眼的信息被用于分析当地大规模滑坡的时间行为和复杂机制。在结果的基础上，本文讨论了流域和地方尺度分析的不同发现。对于主要的大型滑坡，可以获取滑坡敏感性值的等级，以优先处理滑坡。多尺度滑坡敏感性分析可应用于复杂滑坡灾害的山区公路。 （C）2016由Elsevier B.V.发布

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