This study presents a seismic risk assessment and a set of earthquake scenarios for the residential building stock of the three largest metropolitan centers of Colombia: Bogotá, Medellín and Cali (with 8.0, 2.5, and 2.4 million inhabitants, respectively). A uniform methodology was followed for the development of the seismic hazard, vulnerability, and exposure models, thus allowing a direct comparison between the seismic risk of the different cities. Risk metrics such as exceedance probability curves and average annual losses were computed for each city. The earthquake scenarios were selected considering events whose direct economic impact is similar to the aggregated loss for a probability of exceedance of 10% in 50 years. Results show a higher mean aggregate loss ratio for Cali and similar mean aggregate loss ratios for Bogotá and Medellín. All of the models used in this study are openly accessible, enabling risk modelers, engineers, and stakeholders to explore them for disaster risk management.

中文翻译：

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哥伦比亚波哥大、麦德林、卡利三大城市住宅建筑地震风险评估

本研究为哥伦比亚三个最大的城市中心：波哥大、麦德林和卡利（分别有 8.0、2.5 和 240 万居民）的住宅建筑存量提供了地震风险评估和一组地震情景。地震危险性、脆弱性和暴露模型的开发采用统一的方法，从而可以直接比较不同城市的地震风险。为每个城市计算风险指标，例如超标概率曲线和平均年损失。选择地震情景时考虑了直接经济影响类似于 50 年内超过 10% 的概率的总损失的事件。结果显示卡利的平均总损失率较高，波哥大和麦德林的平均总损失率相似。