Deep Arrays for Earthquake Ground Response, San Francisco Bay Area

该项目是美国国家科学基金会/美国地质勘探局国家减少地震灾害计划(NEHRP)倡议的一部分，目的是调查1989年10月17日洛马普里塔地震的影响。地震响应的深组合测量对于提高当前预测深层粘土中的运动放大和预测砂土液化的能力是必不可少的。这种阵列的建立符合最近由美国国家科学基金会主办的关于指定的美国岩土试验试验场的研讨会的建议。这项试点研究的目的是收集必要的信息，以便选择可以永久安装地震响应仪器阵列的地点。这项研究的一个组成部分是回顾洛马普里塔地震和旧金山湾区其他先前事件的所有可用信息，以帮助选择旧金山湾区实施阵列的合适候选地点。特别令人感兴趣的是洛马-普里埃塔地震后获得的所有实地岩土数据，这些数据将进一步帮助选择过程。必要的步骤包括访问和勘测潜在的地点，并启动确保这些地点长期可用的必要步骤。最终目标是为在旧金山湾区建立地震记录站推荐所选地点和区域。

This project is part of the NSF/USGS initiative within the National Earthquake Hazard Reduction Program (NEHRP) to investigate the effects of the Loma Prieta earthquake of 17 October 1989. Deep arrays for measurement of earthquake response are essential to improve the current capability to predict the motion amplification in deep clays, and to predict the liquefaction of sands. The establishment of such arrays is consistent with the recommendation of the recent NSF-sponsored workshop on designated test sites for geotechnical experimentation in the United States. The objectives of this pilot study are to gather information necessary for the selection of sites where arrays of instrumentation for earthquake response could be permanently installed. An integral part of this study is to review all information available from the Loma Prieta earthquake and other previous events in the San Francisco Bay area to assist in selecting the most suitable candidate sites in the San Francisco Bay area for implementation of the arrays. Of special interest are all field geotechnical data acquired after the Loma Prieta earthquake which will further help the selection process. Necessary steps include visiting and surveying the potential sites and initiating the steps that are necessary to ensure long-term availability of these sites. The final goal is to recommend sites and areas within the selected sites for the establishment of seismic recording stations in the San Francisco Bay area.