Collaborative Research: Three-Dimensional Modeling of Basin Effects on Ground Motion from the Northridge Earthquake

本研究是利用三维计算机模拟研究1994年加利福尼亚州北岭地震震源与圣费尔南多谷及周边地区三维地质结构的相互作用。该项目将由圣地亚哥州立大学和麦克斯韦实验室S-CUBED部门合作完成。圣费尔南多谷是一个广泛的低地震速度沉积盆地。一个中心目标是评估这种几何结构在控制水平和垂直强震的频率、内容、持续时间和强度方面所起的作用。为了从地震中吸取正确的工程经验，我们需要了解这次地震的具体情况产生了哪些地面运动特征，以及哪些地面反应特征可能在未来的地震中重复出现。该项目是对国家减少地震危害计划的贡献，由北岭地震紧急拨款支持。* * *

9416320 Magistrale This research is to use 3-D computer simulations to investigate the interaction of the 1994 Northridge, California, earthquake source with the three-dimensional geologic structure of the San Fernando Valley and surrounding region. The project will be a collaboration between San Diego State University and S-CUBED Division of Maxwell Laboratories. The San Fernando valley is an extensive, low seismic velocity sedimentary basin. A central objective is to assess the role played by this geometry in controlling the frequency content, duration, and intensity of horizontal and vertical strong ground motions. In order to draw the correct engineering lessons from the earthquake, we need to understand what characteristics of the ground motion arose from the specifics of this event versus which characteristics of the ground response are likely to be repeated in future earthquakes. This project is a contribution to the National Earthquake Hazard Reduction Program and is supported by the Northridge Earthquake Emergency Appropriation. ***