Deep Arrays for Earthquake Ground Response, San Francisco Bay Area

该项目是NSF/USGS的一部分。 国家地震局的倡议 减少危害计划（NEHRP）， 调查洛马普列塔的影响 1989年10月17日地震。 深部地震台阵 反应是必不可少的，以改善目前 预测运动的能力 在深层粘土中的放大，并预测 沙子的液化 建立 这类数组与 最近NSF赞助的建议 指定试验场讲习班 土工试验在美国 States. 这项试验性研究的目的是 收集必要的信息， 选择的网站，阵列 地震反应仪器可以 永久安装。 一个组成部分 这项研究的目的是审查所有信息， 从洛马普列塔地震和 以前在旧金山弗朗西斯科的其他活动 湾区协助挑选最 在旧金山弗朗西斯科的合适的候选地点 用于实施阵列的湾区。 特别感兴趣的是所有领域 Loma之后获得的岩土数据 普列塔地震将进一步帮助 选择过程。 必要的步骤包括 访问和调查可能的地点 并启动必要的步骤 以确保长期提供这些 网站. 最终目标是推荐网站， 选定地点内的区域， 地震台站建设 在旧金山弗朗西斯科湾区。

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.