Historical Earthquake Relocation

这项研究是科罗拉多矿业学院和美国地质调查局合作努力的延续，目的是根据全球地震活动目录中汇编的走时信息系统地重新定位历史地震活动。该项目的最终成果是一份涵盖20世纪的统一的全球地震目录，它将使目前地震数据库的长度增加三倍。地震的重新定位使用一种新的定位算法，该算法基于现代观测得出的每个相位到达时间的概率密度函数动态地重新识别地震相位。这项研究是国家减少地震危害计划的一个组成部分。＊＊＊

9725140 Villasenor This research is a continuation of a cooperative effort between the Colorado School of Mines and the U.S. Geological Survey to systematically relocate historical seismicity based on travel-time information compiled in several catalogs of global seismicity. A final product from this project, a consistent global earthquake catalog covering the 20th Century, will triple the length of the current earthquake data bases. Earthquakes are relocated using a new location algorithm that dynamically re-identifies earthquake phases based on the probability density function of each phase's arrival time derived from modern observations. This research is a component of the National Earthquake Hazard Reduction Program. ***