COLLABORATIVE RESEARCH: Dynamic Processes Along a Passive Margin: A Geological and Geodetic Study of the Northern Gulf of Mexico

9725330被动边缘沉积桩的Dokka变形以往对被动边缘沉积桩变形的经典认识是基于墨西哥湾沿岸地区的构造关系。然而，这一地区的构造演化却鲜为人知。仍然存在的基本问题是生长断层的生长速度是多少，它们的运动是连续的还是偶然的，墨西哥湾沿岸的盐运动是否与这种扩展有运动学上的联系，以及断层带和断层之间的区域之间的应变是如何划分的。Dokka和Dixon将联合起来收集GPS数据来解决这些问题。他们的多年多站活动测量三维运动数据作为时间的函数，结果与海平面高度数据相结合，将解决墨西哥湾中部沿岸地区的所有这些问题。他们的研究结果将在GPS数据和潮汐数据之间架起一座桥梁，而已知断层之间和断层之间的运动差异将揭示应变划分的数据。结果将具有普遍意义，因为它们将作为数据不太完整的其他被动边缘变形的模型。

9725330 Dokka Deformation of sedimentary piles in passive margins in classical understanding of deformation of sedimentary piles impassive margins is based in past on structural relations in the Gulf Coast region. However, the evolution of the structures in this region is rather poorly understood. Fundamental questions that remain are what is the rate of growth of growth faults, is motion they continuous or episodic, is salt motion along the Gulf Coast kinematically linked to this extension, and how is strain partitioned between fault zones and the regions between faults. Dokka and Dixon will combine forces to collect GPS data to address these issues. Their multi-year multi-station campaigned to measure three dimension motion data as a function of time with the results integrated with sea level elevation data will address all of these issues in the central Gulf Coast region. Their results will provide a bridge between GPS data and tidal data, and differences in motion between and across known faults will reveal data on strain partitioning. The results will have generic significance because they will serve as a model for deformation of other passive margins where data are much less complete.