Journal of The Japan Forest Engineering Society
Online ISSN : 2189-6658
Print ISSN : 1342-3134
ISSN-L : 1342-3134
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Volume 33, Issue 2
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Article
  • Shallow landslide hazard assessment using high-resolution DEM for application to road alignment design.
    Hiroaki Shirasawa, Masashi Saito, Kenichiro Toda, Yasuyuki Tada, Hirom ...
    2018 Volume 33 Issue 2 Pages 123-131
    Published: April 30, 2018
    Released on J-STAGE: May 11, 2018
    DOIhttps://doi.org/10.18945/jjfes.33.123
    JOURNAL FREE ACCESS
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    Road construction on unstable mountain slopes must be avoided to reduce the risk of disaster. This paper developed and verified a simple approach for assessing shallow landslide hazards, with the goal of supporting the design of road alignment. The assessment was conducted using three topographic characteristics—dissection height, undissection height, and dissection rate—derived from a high-resolution digital elevation model (DEM). The results showed that all three topographic characteristics are closely related to shallow landslides, and are useful in the assessment of shallow landslide hazard. The evaluation of the assessment performance showed that the best assessment is provided by using dissection height; this approach efficiently narrows down hazard areas. These assessment results can support road alignment design based on the appropriate interpretation of the terrain.

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