Improved Methods for Imaging Fault Rupture: Dynamic Rupture Modeling and Optimal Use of Diverse Data

9614168 Beroza这项研究是为了开发新的技术，通过对有限断层反问题的动态方法来成像和理解断层破裂。有限故障反问题本质上是欠定的，因此不是唯一的。平滑约束通常是任意的，通常用于稳定解。动态破裂模拟将稳定化参数建立在物理基础上。研究的重点将集中在1)解决动态参数的有限故障逆问题和2)发展一种方法来适当地考虑波形反演中的数据、模型和建模的不确定性。这项研究是国家减少地震灾害计划的一部分。***

9614168 Beroza This research is to develop new techniques for imaging and understanding fault rupture by means of a dynamic approach to the finite-fault inverse problem. The finite-fault inverse problem is inherently under-determined and hence non-unique. Smoothing constraints, often arbitrary, are usually applied to stabilize the solution. Dynamic rupture modeling puts the stabilization parameters on a physical basis. The research will focus on 1) solving the finite-fault inverse problem of dynamic parameters and 2) developing a method to properly account for data, model, and modeling uncertainty in waveform inversion. This research is a component of the National Earthquake Hazard Reduction Program. ***