Active and Passive Seismic Imaging of the San-Andreas-Fault System

目前，EarthScope项目SAFOD在圣安德烈斯断层系统附近获得了高质量的活动地震数据。我们的建议旨在使用新开发的技术处理和解释这些数据集，以便获得地下的高分辨率图像。一方面，我们希望对其中两个数据集采用菲涅耳体积迁移，以获得与现有图像相比改进的、更详细的故障系统内部结构图像。另一方面，我们希望利用一种新的有效方法来定位断层系统附近的局部地震，然后研究它们与断层系统结构特征的关系。总之，这些研究对理解控制这样一个活跃板块边界的运动和地震触发的物理和化学过程作出了重要贡献。

High-quality active seismic data are currently acquired in the vicinity of the San-Andreas-Fault-System within the EarthScope project SAFOD. Our proposal aims at processing and interpretation of these data sets using newly developed techniques in order to derive a high-resolution image of the subsurface. On one hand we want to employ Fresnel-Volume-Migration to two of these data sets for an improved and more detailed image of the internal structure of the fault system compared with already existing images. On the other hand we want to locate local earthquakes from the vicinity of the fault system using a new efficient procedure followed by a study of their relationship to the structural features of the fault system. In summary these investigations provide an important contributation to the understanding of the physical and chemical processes that control the motion and earthquake triggering at such an active plate boundary.