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Evolution of landslide hotspots in Taiwan

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Abstract

Among the disasters facing Taiwan, earthquakes and typhoons incur the greatest monetary losses, and landslide disasters inflict the greatest damage in mountainous areas. The nationwide landslide susceptibility map gives an indication of where landslides are likely to occur in the future; however, there is no objective index indicating the location of landslide hotspots. In this study, we used statistical analysis to locate landslide hotspots in catchments in Taiwan. Global and local spatial autocorrelation analysis revealed the existence of landslide clusters between 2003 and 2012 and identified a concentration of landslide hotspots in the eastern part of Central Taiwan. The extreme rainfall brought by typhoon Morakot also led to the formation of new landslide hotspots in Southern Taiwan. This study provides a valuable reference explaining changes in landslide hotspots and identifying areas of high hotspot concentration to facilitate the formulation of strategies to deal with landslide risk.

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Authors and Affiliations

  1. National Science and Technology Center for Disaster Reduction, Taipei, Taiwan, Republic of China

    S. C. Lin & M. C. Ke

  2. Department of Civil Engineering, National Taiwan University, Taipei, Taiwan, Republic of China

    S. C. Lin

  3. Institute of Mineral Resources Engineering, National Taipei University of Technology, Taipei, Taiwan, Republic of China

    M. C. Ke

  4. Department of Civil and Disaster Prevention Engineering, National United University, Miaoli, Taipei, Taiwan, Republic of China

    C. M. Lo

Authors
  1. S. C. Lin
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  2. M. C. Ke
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  3. C. M. Lo
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Correspondence to C. M. Lo.

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Lin, S.C., Ke, M.C. & Lo, C.M. Evolution of landslide hotspots in Taiwan. Landslides 14, 1491–1501 (2017). https://doi.org/10.1007/s10346-017-0816-9

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