Global Earthquake Hazard Frequency and Distribution

The Global Earthquake Hazard Frequency and Distribution is a 2.5 minute grid utilizing Advanced National Seismic System (ANSS) Earthquake Catalog data of actual earthquake events exceeding 4.5 on the Richter scale during the time period 1976 through 2002. To produce the final output, the frequency of an earthquake hazard is calculated for each grid cell, and the resulting grid cells are then classified into deciles (10 classes consisting of an approxiamately equal number of grid cells). The greater the grid cell value in the final output, the higher the relative frequency of hazard posed by earthquakes. This data set is the result of collaboration among the Columbia University Center for Hazards and Risk Research (CHRR) and Columbia University Center for International Earth Science Information Network (CIESIN).

全球地震灾害频率与分布数据集，采用2.5分钟网格划分，基于1976年至2002年间实际发生的里氏震级超过4.5级的地震事件，并利用先进的国家级地震系统（ANSS）地震目录数据。为生成最终输出，对每个网格单元的地震灾害频率进行计算，并将结果网格单元分类为十等分（包含约等数量的网格单元的10个等级）。最终输出中网格单元的值越大，地震所造成的相对灾害频率越高。该数据集为哥伦比亚大学灾害与风险评估研究中心（CHRR）和哥伦比亚大学国际地球科学信息网络中心（CIESIN）合作成果。