Coupled Evolution of Earthquakes and Faults in a Rheologically-Layered Half-Space

9725358本研究在先前的3-D模拟的基础上，研究了区域地震活动、非地震形变和维持形变的断层系统网络的同步演化。其目的是为了解区域地震的时空分布，以及不同变形方式、断层结构性质和脆性地壳及其韧性环境的流变性之间的相互关系奠定物理基础。这项工作将采用一个模型，在一个由分层弹性/粘弹性半空间组成的结构中，包含变形和时间相关的损伤流变学。这项工作将试图在参数空间绘制不同结构和流变性可能的地壳响应的基本类型，了解不同响应的基本特征，并审查根据地震活动模式进行地震预测的可能性。这项研究是国家减少地震灾害计划的一部分。***

9725358 Ben-Zion This research involves the study of the simultaneous evolution of regional seismicity, aseismic deformation, and the network of fault systems sustaining the deformation in a continuation of prior 3-D simulations. The goal is to establish a physical basis for understanding spatio-temporal patterns of regional earthquakes, and the interrelations between different modes of deformation, structural properties of faults, and rheological properties of the brittle crust and its ductile surroundings. The work will employ a model incorporating deformation- and time-dependent damage rheology in a structure consisting of a layered elastic/viscoelastic half- space. The work will attempt to map in parameter space the basic types of crustal response that are possible for different structural and rheological properties, understand the essential characteristics of the different responses, and examine the possibility of earthquake prediction based on seismicity patterns. This research is a component of the National Earthquake Hazard Reduction Program. ***