Abstract
The frequency of landslides and their magnitude are increasing worldwide due to global climate change, causing damage to people and infrastructure. Therefore, landslide risk assessment is urgent. This study developed a novel landslide risk assessment framework to analyze landslide risk on Mt. Umyeon, Republic of Korea. The proposed framework comprises four main procedures: (1) landslide hazard analyses using an ensemble statistical and physical model, (2) analyses of physical vulnerability from a vulnerability curve, (3) analyses of physical vulnerability from a semi-quantitative approach, and (4) risk index calculation using the results from the previous steps via a proposed equation which combines the quantitative and semi-quantitative approaches. To confirm the reliability of the framework, the results of each step were compared to a real landslide event that occurred in July 2011 on Mt. Umyeon. The framework successfully assessed landslide risk in this area. In addition, the landslide risk for different landslide return periods was calculated. This new framework for landslide risk assessment supports reliable decision-making for landslide risk assessment and management.
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Funding
This research was supported by the Korea Institute of Energy Technology Evaluation and Planning, Ministry of Trade, Industry and Energy of the Republic of Korea (No. 20201510100020) and Korea Agency for Infrastructure Technology Advancement via a grant funded by the Ministry of Land, Infrastructure and Transport (grant no. 19TSRD-B151228-01).
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Nguyen, BQV., Kim, YT. Regional-scale landslide risk assessment on Mt. Umyeon using risk index estimation. Landslides 18, 2547–2564 (2021). https://doi.org/10.1007/s10346-021-01622-8
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DOI: https://doi.org/10.1007/s10346-021-01622-8