4.6 Article

Characteristics of landslide path dependency revealed through multiple resolution landslide inventories in the Nepal Himalaya

期刊

GEOMORPHOLOGY
卷 390, 期 -, 页码 -

出版社

ELSEVIER
DOI: 10.1016/j.geomorph.2021.107868

关键词

Landslides; Nepal; Himalaya; Path dependency; Landslide susceptibility

资金

  1. Natural Environment Research Council [NE/L002582/1]
  2. AECOM

向作者/读者索取更多资源

Recent research in Italy showed that landslide susceptibility is controlled by path dependency, leading this study to quantify path dependency in the Nepal Himalaya. The findings confirm the presence of landslide path dependency in Nepal, with characteristics varying based on inventory resolution.
Recent research in Umbria, Italy, has shown that landslide susceptibility is controlled by a process called path dependency, which describes how past landslides control the locations of future landslides. To date, landslide path-dependency has only been characterised in Italy. This raises the question of whether this process occurs in other geomorphic settings, and thus whether path-dependency should be more universally included in landslide susceptibility assessments. Therefore, the main aim of this paper is to investigate and quantify landslide path dependency in the Nepal Himalaya. This is achieved by applying several path dependent metrics to three monsoon-triggered landslide inventories for the central-eastern Nepal Himalaya. These inventories were developed at two different spatial and temporal resolutions. As such, we aim not just to quantify landslide path dependency, but also to assess whether path dependency characteristics are resolution-dependent. We find strong evidence that landslide path dependency is occurring in Nepal, with all three inventories having more overlap between past and new landslides than expected from a random distribution, and a tentative observation that the expected degree of overlap between landslides decreases with time. Finally, whilst path-dependency is observable across both of the investigated inventory resolutions, we find that the rates and magnitudes of the quantified path dependent metrics are sensitive to inventory length, study region size and the size/type of landslides mapped. Overall, our results corroborate the path-dependency observations from Italy, confirming that this process does occur in other geomorphic settings, and thus suggesting that path-dependency should be explicitly and universally considered in landslide susceptibility approaches. (c) 2021 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http:// creativecommons.org/licenses/by/4.0/).

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.6
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据