Collaborative research: Determination of time-dependent velocity and velocity gradient fields for Earthscope

该项目的首要目标是利用Earthscope数据确定北美大陆地壳变形的高精度、高分辨率四维图像，时间尺度从几天到几十年，空间尺度从几公里到几千公里。 这一目标将通过分析Earthscope的板块边界观测站（PBO）设施的连续GPS数据来实现，并通过扩大过去在板块边界尺度地壳变形分析和建模方面的经验，以更好地解释地壳运动的时间依赖性。 在全面实施Earthscope之前，将实现制定实现速度梯度张量场四维解的方法的基本目标。 其主要目标是开发一种工具，供社区在项目成熟时用于今后对Earthscope数据的分析。

The overriding-objective of this project is to use Earthscope data to determine a high-precision, high resolution, four-dimensional image of crustal deformation for the North America continent on time-scales of days to decades, and spatial-scales of kilometers to thousands of kilometers. This goal will be achieved by analyzing continuous GPS data from Earthscope's Plate Boundary Observatory (PBO) facility, and by expanding upon past experience in the analysis and modeling of plate boundary-scale crustal deformations to better account for time-dependence of crustal motions. The fundamental objective of developing methods to realize four-dimensional solutions of the velocity gradient tensor field will be achieved prior to the full implementation of Earthscope. It is a primary goal to develop a tool that the community can use for future analysis of Earthscope data as the project matures.