Broadband Earthquake Source Study Using a Composite Source Modeling Approach

小行星9418922 本研究是利用复合震源模拟方法对多个震源进行反演研究。 首先生成一组复合子事件，然后使用遗传算法将这些子事件定位在与观测到的强震波形最匹配的断层面上。 此外，等效地震滑移和动态应力降模型将产生的复合源的解决方案。 研究结果将有助于更好地理解地震动力学，并回答有关复合震源解的运动学描述所施加的动态震源模型特征的问题。 这种方法的优点是，它提供了一个宽带描述的震源和波的传播，它有所有重要的地震波的阶段。 它可以用来从一组特定的映射断层估计地震危险性。 这项研究是国家地震减灾计划的一个组成部分。 *** ??

9418922 Zeng This research is to do an inverse study for several earthquake sources using a composite source modeling approach. A suite of composite subevents is first generated and then a genetic algorithm is used to locate these subevents on the fault plane that best matches the observed strong motion waveforms. Also, equivalent earthquake slip and dynamic stress drop models will be generated from the composite source solutions. The results will help to better understand the earthquake dynamics and answer questions in regard to the characteristics of a dynamic source model imposed by the kinematic description of a composite source solution. Advantages of this approach are that it provides a broadband description of earthquake source and wave propagation and that it has all the important phases of seismic waves. It can be used to estimate the seismic hazard from a specific set of mapped faults. This research is a component of the National Earthquake Hazard Reduction Program. *** ??