Global Multihazard Proportional Economic Loss Risk Deciles

The Global Multihazard Proportional Economic Loss Risks is a 2.5 minute grid of a multihazard-based economic loss risk as a proportion of the economic productivity of the analytical Unit, the grid cell. Representation of multihazard risk is not based on a multihazard index but rather on combinations of hazard risk categories, drought, seismic, and hydro. The drought category includes drought only. The seismic category consists of earthquake and volcano hazards. Cyclones, floods, and landslides are included in the hydro category.

For each of the six hazards considered, a binary risk surface is constructed utilizing the three most-at-risk deciles of each hazard's global proportional economic loss risks data set (deciles 8-10). Each of the category risk surfaces are constructed by adding all the relevant hazard high-risk surfaces. These categorical risk surfaces are reclassified into binary high-risk surfaces. The combination of the category risk values forms a three digit identifier for determining those locations that are at higher-risk from multihazards. This data set is the result of collaboration among the Columbia University Center for Hazards and Risk Research (CHRR), International Bank for Reconstruction and Development/The World Bank, and Columbia University Center for International Earth Science Information Network (CIESIN).

全球多灾种比例经济损失风险数据集，以2.5分钟网格形式呈现，反映基于多灾种的经济损失风险与分析单元——网格单元的经济生产力的比例。该风险表示并非基于多灾种指数，而是基于灾害风险类别（如干旱、地震和洪水）的组合。其中，干旱类别仅包含干旱；地震类别包括地震和火山灾害；而气旋、洪水和滑坡则包含在洪水类别中。对于所考虑的六种灾害，通过利用每种灾害全球比例经济损失风险数据集中风险最高的三个十分位（第8至第10十分位）构建二元风险表面。每个类别的风险表面通过累加所有相关的高风险表面构建而成。这些类别风险表面被重新分类为二元高风险表面。类别风险值的组合形成一个三位数字标识符，用以确定那些因多灾种而面临较高风险的位置。该数据集是哥伦比亚大学灾害与风险研究（CHRR）、国际复兴开发银行/世界银行以及哥伦比亚大学国际地球科学信息网络中心（CIESIN）之间合作的结果。