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Risk Assessment of Earthquake-Triggered Geohazards Surrounding Wenchuan, China
The great 2008 Wenchuan earthquake in China was a painful disaster. Accordingly, the management and mitigation of the risk of future earthquake-triggered geohazards remain a critical responsibility of local authorities. This case study assesses the risk of earthquake-triggered geohazards surrounding Wenchuan County using the analytical hierarchical process (AHP) and the trapezoidal fuzzy AHP (FAHP). The assessment results show that the regions with high-risk and very high-risk levels are distributed in the belt along the Longmenshan fault zone. Moreover, the percentages of high and very high-risk levels obtained from the trapezoidal FAHP are higher than those obtained from the original AHP. This comparison reveals that the trapezoidal FAHP provides a more reasonable assessment than the AHP. Further, the trapezoidal FAHP can capture the regions with high-risk and very high-risk levels. The results from the trapezoidal FAHP provide four choices that stakeholders can use to make decisions, which mitigates the biases that exist in the original AHP.
Risk Assessment of Earthquake-Triggered Geohazards Surrounding Wenchuan, China
The great 2008 Wenchuan earthquake in China was a painful disaster. Accordingly, the management and mitigation of the risk of future earthquake-triggered geohazards remain a critical responsibility of local authorities. This case study assesses the risk of earthquake-triggered geohazards surrounding Wenchuan County using the analytical hierarchical process (AHP) and the trapezoidal fuzzy AHP (FAHP). The assessment results show that the regions with high-risk and very high-risk levels are distributed in the belt along the Longmenshan fault zone. Moreover, the percentages of high and very high-risk levels obtained from the trapezoidal FAHP are higher than those obtained from the original AHP. This comparison reveals that the trapezoidal FAHP provides a more reasonable assessment than the AHP. Further, the trapezoidal FAHP can capture the regions with high-risk and very high-risk levels. The results from the trapezoidal FAHP provide four choices that stakeholders can use to make decisions, which mitigates the biases that exist in the original AHP.
Risk Assessment of Earthquake-Triggered Geohazards Surrounding Wenchuan, China
Lyu, Hai-Min (author) / Shen, Shui-Long (author) / Yang, Jun (author) / Zhou, An-Nan (author)
2020-05-15
Article (Journal)
Electronic Resource
Unknown
Special thematic issue: Wenchuan earthquake geohazards
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