COLLABORATIVE RESEARCH: Determination of time-dependent velocity and velocity gradient fields for EarthScope

0545606霍尔特本项目的首要目标是利用地球观测仪的数据来确定北美大陆在几天到几十年的时间尺度和几公里到几千公里的空间尺度上的高精度、高分辨率的四维地壳形变图像。我们正在通过分析来自地球观测仪的板块边界观测站（PBO）设施的连续GPS数据来实现这一目标，并通过扩展过去在板块边界尺度地壳形变分析和建模方面的经验，更好地解释地壳运动的时间依赖性。 发展实现速度梯度张量场四维解的方法的基本目标将在全面实施Earthscope之前实现。 随着项目的成熟，它的主要目标是开发社区可以用于未来分析Earthscope数据的工具。

0545606HoltThe overriding-objective of this project is to use Earthscope data todetermine a high-precision, high resolution, four-dimensional image ofcrustal deformation for the North America continent on time-scales of daysto decades, and spatial-scales of kilometers to thousands of kilometers.We are pursuing this goal by analyzing continuous GPS data from Earthscope'sPlate Boundary Observatory (PBO) facility, and by expanding upon pastexperience in the analysis and modeling of plate boundary-scale crustaldeformations to better account for time-dependence of crustal motions. Thefundamental objective of developing methods to realize four-dimensionalsolutions of the velocity gradient tensor field will be achieved prior tothe full implementation of Earthscope. It is a primary goal to develop atool that the community can use for future analysis of Earthscope data asthe project matures.