Integrated Study of Source, Path and Site Effects on Northridge Ground Motions

北岭地震动源、路径和场地效应的综合研究

• 批准号: 9416223
• 负责人: John Anderson
• 金额: $ 4.62万
• 依托单位: Board of Regents, NSHE, obo University of Nevada, Reno
• 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 1996-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9416223&HistoricalAwards=false
• 关键词: Integrated; Study; Source; Path; Site

9416223 Anderson This research is to understand the site, source and path effect of the Northridge earthquake for strong motion prediction and seismic hazard reduction in the Los Angeles region. Preliminary work on a composite source model generated very realistic synthetic strong motion seismograms at several locations. This work will be continued and completed for several strong ground motion parameters including peak acceleration and velocity, and Fourier and response spectral amplitudes. Then the work will focus on finding the optimal source model parameters and concentrate on site effects, expressed as a Fourier spectral ratio of weak motions in aftershocks to predicted ground motions for a flat-layered half space. This contrasts with the more usual reference, for spectral ratios, of a nearby rock station or a network average. This project is a contribution to the National Earthquake Hazard Reduction Program and is supported by the Northridge Earthquake Emergency Appropriation. ***

9416223安德森 本研究旨在了解北岭地震的地点、震源和路径效应，以利于洛杉矶地区的强震预测和减灾。 复合震源模型的初步工作在几个地点产生了非常逼真的合成强震图。 这项工作将继续进行，并完成了几个强地面运动参数，包括峰值加速度和速度，傅立叶和反应谱振幅。 然后，工作将集中在寻找最佳的源模型参数，并集中在场地效应，表示为一个傅立叶频谱比的弱运动余震预测地面运动的一个平坦的层状半空间。 这与更常见的参考，光谱比，附近的岩石站或网络的平均值。 该项目是对国家减少地震危险计划的贡献，并得到北岭地震紧急拨款的支持。 ***