RUI: Resolving Fault-Plane Ambiguity for Small Earthquakes Using Broadband Seismic Data

本研究旨在开发和测试解决 断层面模糊性问题，即断层的不确定性 从地震初动的平面解来求解 两个正交平面中的哪一个才是真正的断层面。 的 研究将使用本地记录的宽带，高 来自安扎，加州， 数字地震台阵的数据。 的 完整体波的宽带地震能量应该具有 作为有限源的结果的一些方向性信息 尺寸 便携式地震系统记录的数据 埃尔西诺和圣哈辛托断层之间的地震群 还将分析区域。 这项研究是一个组成部分， 国家地震减灾计划。

This research is to develop and test methods for resolving the fault plane ambiguity problem, that is, the inability of fault plane solutions from first motions of an earthquake to resolve which of two orthogonal planes was the actual fault surface. The research will be done using locally recorded, broad-band, high dynamic range digital seismograms from the Anza, California, digital seismic array for the Cahuilla earthquake swarm. The broad-band seismic energy of the complete body waves should have some directivity information as a result of the finite source size. Data from portable seismic systems that recorded earthquake swarms between the Elsinore and San Jacinto fault zones will also be analyzed. This research is a component of the National Earthquake Hazard Reduction Program.