Modeling Strong Motions from the Northridge Earthquakes

模拟北岭地震的强烈运动

• 批准号: 9416340
• 负责人: Donald Helmberger
• 金额: $ 7.99万
• 依托单位: California Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-09-15 至 1996-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9416340&HistoricalAwards=false
• 关键词: Modeling; Strong; Motions; Northridge; Earthquakes

9416340 Helmberger This research is to obtain aftershock source information from the broad-band, high capability TERRAscope waveform data in conjunction with the locations from the USGS-Caltech short-period array. With the sources fixed, propagational effects will be examined to develop better velocity models and associated Green's functions for the San Fernando region. Thus, the larger events and mainshock can be re-inverted for slip-distributions using these Green's Functions. In the process, the 3-D velocity model of the region will have greatly improved and can be used to assess hazards throughout the extended Los Angeles region. This project is a contribution to the National Earthquake Hazard Reduction Program and is supported by the Northridge Earthquake Emergency Appropriation. ***

小行星9416340 本研究系利用宽频带、高性能的地形仪波形资料，结合美国地质勘探局-加州理工学院短周期台阵的定位，来获取余震震源信息。 随着源的固定，传播效应将被检查，以开发更好的速度模型和相关的绿色的功能，圣费尔南多地区。 因此，可以使用这些绿色函数重新反演较大的事件和主震的滑移分布。 在此过程中，该地区的三维速度模型将得到极大的改进，并可用于评估整个扩展的洛杉矶地区的危险。 该项目是对国家地震减灾计划的贡献，并得到北岭地震紧急拨款的支持。 ***