Identification and Analysis of Locked Asperities Along Tectonic Faults

这项研究解释了地震活动和大地测量数据， 锁定断层带的几何形状和应力， 在大地震中破裂。 这些研究将在 粗糙模型的框架，其中考虑了一部分， 地震活跃断层带被有效地锁定， 除了在大地震中， 地震活动性较低的地区， 不会积累类似的压力。 最初的重点将是 阿拉斯加舒马金群岛俯冲段的建模， 以及沿着圣安德烈亚斯断层的帕克菲尔德地区。 这 研究是国家地震灾害的组成部分 减少方案。

This research interprets seismicity and geodetic data in terms of the geometry and stressing of locked fault zones which will rupture in large earthquakes. The studies will be carried out in the framework of the asperity model which regards a portion of a seismically active fault zone as being effectively locked against slip, except in large earthquakes, while adjacent portions of the zone slip aseismically, or with lower level seismicity, and do not accumulate comparable stress. The initial focus will be on modelling of the Shumagin Islands subduction segment in Alaska, and the Parkfield region along the San Andreas fault. This research is a component of the National Earthquake Hazard Reduction Program.