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

9725330被动边缘沉积桩的多卡变形经典理解中对沉积桩被动边缘变形的理解是建立在过去墨西哥湾沿岸地区构造关系的基础上的。然而，人们对该地区构造的演变知之甚少。剩下的基本问题是，生长断层的生长速度是多少，它们的运动是连续的还是间歇性的，墨西哥湾沿岸的盐运动与这一伸展运动是否存在运动学联系，以及断裂带和断层之间区域之间的应变是如何分配的。Dokka和Dixon将联合力量收集GPS数据，以解决这些问题。他们的多年多站活动是为了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地区的所有这些问题。他们的结果将在GPS数据和潮汐数据之间架起一座桥梁，而已知断层之间和跨断层的运动差异将揭示应变划分的数据。这些结果将具有普遍意义，因为它们将作为其他被动利润率变形的模型，在这些数据中，数据要不完整得多。

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.