Subsurface Geometry of Active Faults in the Southern San Andreas System

这项研究是一个正在进行的项目的延伸， 与San有关的活动断层的地下几何形状 加州南部的安德烈亚斯系统。 映射的几何 通过叠前偏移， 地震反射数据集 成像的故障将与 区域深部地壳结构，并测试了 泊松比变化幅度与偏移趋势， 表明存在构造活动薄弱区 的数据 EDGE和Calcrust项目将用于调查圣诞老人 玛丽亚盆地和特哈查比山区。 这项研究是一个 国家地震减灾计划的一部分。

This research is an extension of an ongoing project to image the subsurface geometry of active faults associated with the San Andreas system in southern California. The geometry of mapped active faults will be found by pre-stack migration of existing seismic reflection datasets. The imaged faults will be related to regional deep crustal structures and tested for evidence of Poisson's ratio variations from amplitude-versus-offset trends, suggesting tectonically-active zones of weakness. Data from the EDGE and Calcrust projects will be used to investigate the Santa Maria Basin and Tehachapi Mountains areas. This research is a component of the National Earthquake Hazard Reduction Program.