Making Effective Use of GPS and Strainmeter Data: A PBO Pilot Project

0454475Agnew该项目正在改进分析由应变计和永久性GPS阵列记录的地球变形的方法，包括EarthScope的板块边界观测组件。 为了改进钻孔应变仪的校准，正在分析现有的数据，以提供不同的应变耦合模型，以及通用的工具和方法。 新的方法正在被开发出来，以根据GPS测量的位移来估计应变变化，并检查这些数据中的噪声源和可能的地球物理信号。这些方法将使用允许时间相关性和非高斯行为的统计描述。 来自现有GPS网络的结果正在与旧金山湾区、帕克菲尔德、洛杉矶和尤卡山的校准应变计测量结果进行比较。 结果之一是帮助建立一个应变数据用户社区，培训学生并提供分析工具。

0454475AgnewThis project is improving methods for analyzing Earth deformation recorded bystrainmeters and by permanent GPS arrays including those of the Plate BoundaryObservatory component of EarthScope. To improve the calibration of boreholestrainmeters, existing data is being analysed to provide different models forstrain coupling, and tools and methods for general use. New methods are beingdeveloped to estimate strain changes from displacements measured by GPS, and toexamine sources of noise, and of possible geophysical signals, in such data.These methods will use statistical descriptions that allow for temporalcorrelation and non-Gaussian behavior. The results from existing GPS networksare being compared with calibrated strainmeter measurements around the SanFrancisco Bay area, at Parkfield, in Los Angeles, and at Yucca Mountain. Oneresult is to help create a community of strain-data users, in training studentsand providing analysis tools.