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).

本数据集为全球地震灾害频率与分布数据集，采用2.5弧分网格格式，其数据取自1976年至2002年间、震级超过里氏4.5级的实际地震事件的先进国家地震系统（Advanced National Seismic System, ANSS）地震目录。为生成最终输出成果，本数据集针对每个网格单元计算地震灾害发生频率，随后将所有网格单元按十分位数法划分为10个类别，每个类别包含近似相等数量的网格单元。最终成果中，网格单元的数值越高，其所对应的地震灾害相对发生频率也就越高。本数据集由哥伦比亚大学灾害与风险研究中心（Center for Hazards and Risk Research, CHRR）与哥伦比亚大学国际地球科学信息网络中心（Center for International Earth Science Information Network, CIESIN）合作研发完成。