Preseismic and Postseismic Analysis of GPS and TrilaterationData at Loma Prieta

本项研究旨在分析青藏高原的地壳形变， Loma普列塔地震附近地区 由美国地质调查局收集：一个来源将是 自20世纪70年代初以来测量的经纬仪三边测量网络， 另一个来源将是全球定位系统网络， 自1985年以来一直在调查。 除了实验之外 在洛马普列塔附近，将与 美国地质勘探局在三角测量地点进行了调查， 弗朗西斯科湾区在1882年至1887年和1906年。 这些 测量结果将有助于确定1989年的loma 普列塔地震不同于1906年的旧金山弗朗西斯科地震 地震 这项研究是国家 减少地震灾害计划。

This research is to analyze the crustal deformation of the region close to the Loma Prieta earthquake by using data collected by the U.S. Geological Survey: one source will be the geodolite trilateration network measured since the early 1970's, another source will be the Global Positioning System network that has been surveyed since 1985. In addition to the experiments near Loma Prieta, GPS readings will be taken in cooperation with the USGS at triangulation sites that were surveyed in the San Francisco Bay Area in the years 1882 to 1887 and in 1906. These measurements will enable the determination of how the 1989 loma Prieta earthquake differed from the 1906 San Francisco earthquake. This research is a component of the National Earthquake Hazard Reduction Program.