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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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