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形变的高精度、高分辨率、四维图像，时间尺度为数天至数十年，空间尺度为公里至数千公里。 这一目标将通过分析来自 Earthscope 板块边界观测站 (PBO) 设施的连续 GPS 数据，并扩展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来实现。 开发实现速度梯度张量场四维解的方法的基本目标将在 Earthscope 全面实施之前实现。 主要目标是开发一种工具，随着项目的成熟，社区可以使用该工具来分析 Earthscope 数据。

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.