Integrated Geological and Geophysical Investigation of Blind Thrust Faults in the Region of the January 17, 1994 Northridge Earthquake

该项目利用地质和地球物理数据，结合先进的构造建模技术，对北岭和圣费尔南多地震断层以及附近可能受到密切相关的北岭和圣费尔南多事件压力的其他盲冲断层的三维盲冲几何形状、滑动矢量和载荷，获得一个完整的、自一致的解决方案。精确的断层几何形状将受到断层形状和相关褶皱形状之间的理论关系的约束。该研究还将通过三维边界元素计算来评估由于圣费尔南多和北岭事件导致的这些断层上的应力变化，从而确定附近是否有其他断层段可能在破坏性地震中滑动。这项研究的结果将提供圣费尔南多谷及其周边地区的地下地图和横截面，并将为该地区其他盲断层的存在和地震潜力提供必要的限制。

9416344 Suppe This project uses geological and geophysical data combined with advanced techniques of structural modelling to obtain an integrated, self consistent solution for the three-dimensional blind-thrust geometry, slip vectors, and loading of the faults of the Northridge and San Fernando earthquakes and for other nearby blind thrust faults that may have been stressed by the closely related Northridge and San Fernando events. Refined fault geometries will be constrained by will tested theoretical relationships between fault shape and associated fold shape. The study will also determine whether there are other nearby fault segments that could slip in damaging earthquakes by using three-dimensional boundary element calculations to evaluate the stress changes on these faults due to the San Fernando and Northridge events. The results of this study will provide subsurface maps and cross sections of the San Fernando Valley and surrounding regions and will provide needed constraints on the presence and seismic potential of other blind faults in the region.