Catalog of natural earthquakes without duplicates

The U. S. Geological Survey (USGS) makes long-term seismic hazard forecasts that are used in building codes. The hazard models usually consider only natural seismicity; non-tectonic (man-made) earthquakes are excluded because they are transitory or too small. In the past decade, however, thousands of earthquakes related to underground fluid injection have occurred in the central and eastern U.S. (CEUS), and some have caused damage. In response, the USGS is now also making short-term forecasts that account for the hazard from these induced earthquakes. A uniform earthquake catalog is assembled by combining and winnowing pre-existing source catalogs. Seismicity statistics are analyzed to develop recurrence models, accounting for catalog completeness. In the USGS hazard modeling methodology, earthquakes are counted on a map grid, recurrence models are applied to estimate the rates of future earthquakes in each grid cell, and these rates are combined with maximum-magnitude models and ground-motion models to compute the hazard. The USGS published a forecast for the years 2016 and 2017. This data set is the catalog of natural earthquakes without duplicates. Duplicate events have been removed based on a hierarchy of the source catalogs. Explosions and mining related events have been deleted.

美国地质调查局（U. S. Geological Survey, USGS）编制的长期地震危险性预测成果已被应用于建筑规范之中。过往的地震危险性模型通常仅考虑天然地震活动；非构造性（人工诱发）地震因具有瞬时性或震级过小而被排除在外。然而在过去十年间，美国中部与东部地区（CEUS）发生了数千起与地下流体注入相关的地震，其中部分已造成灾害损失。对此，美国地质调查局如今也开始针对此类诱发地震带来的危险性开展短期预测工作。研究团队通过整合并筛选现有震源目录，构建了统一的地震目录。通过分析地震活动统计数据并结合目录完整性约束，建立地震复发模型。在美国地质调查局的危险性建模方法中，首先将地震事件映射至地图网格单元进行统计计数，随后通过地震复发模型估算每个网格单元内未来地震的发生频次，再将该频次与最大震级模型、地面运动模型相结合，最终计算得到地震危险性结果。美国地质调查局曾发布2016至2017年的地震危险性预测成果。本数据集为去重后的天然地震目录，依据震源目录的层级优先级剔除了重复地震事件，并已移除爆破事件及采矿相关地震事件。