An Estimate of Fault Friction Properties and Stressing Rate from Aftershocks

小行星9628458 这项研究涉及的估计区域应力率在地震活跃区的应用程序的速率和状态依赖的摩擦模型的迪特里希的余震发生的位置和时间。 该技术被应用于1992年M=7.6兰德斯，加州，地震得到122帕/天的应力率。 应力率的估计是重要的，因为没有直接测量这个量的方法，这对地震危险性估计是重要的。 总体结论是，迪特里希关系成功地预测了余震产生和衰减的空间和时间特征，表明时间相关摩擦适用于活动断层。 将该方法应用于北岭余震可能会对洛杉矶盆地的应力积累速率提供新的约束。 这项研究是国家地震减灾计划的一个组成部分。 ***

9628458 Gross This research involves the estimation of regional stress rates in seismically active areas by means of application of the rate and state-dependent friction model of Dieterich to the location and timing of aftershocks following a major earthquake. The technique was applied to the 1992 M=7.6 Landers, California, earthquake to derive a 122 Pa/day stress rate. The estimation of stress rates is important because there is no method of directly measuring this quantity, which is important for seismic hazard estimation. The overall conclusion that the Dieterich relation makes successful predictions about the spatial and temporal signature of aftershock generation and decay suggests that time dependent friction is applicable to active faults. Application of the method to the Northridge aftershocks may provide a new constraint on the rate of stress accumulation in the Los Angeles basin. This research is a component of the National Earthquake Hazard Reduction Program. ***