SGER: A New Temporal-Spatial Dislocation Source Model

摘要本研究提出并验证了地震矩张量九对时空脉冲表示的新概念，该概念可用于模拟震源破裂和材料裂纹机理等多种位错源。所提出的表示可以内在地整合源的空间和时间特征，与使用两个独立因素的传统方法相比，这是合理的，即一个来自基于空间的对，另一个来自通常假设的源时间函数，因此不完全固有于源的时间特征。该项目的成功完成不仅将提高对断层位错源时空机制的认识。它还将具有广泛的影响，例如在结构健康监测中诊断裂缝损伤，在结构设计/改造中模拟地震运动，在石油/天然气勘探中进行地震调查，以及在结构中评估爆炸的影响。

NSF # 0414363SGER: A NEW TEMPORAL-SPATIAL DISLOCATION SOURCE MODELRay Ruichong ZhangDivision of Engineering, Colorado School of Mines, Golden, CO 80401ABSTRACT This study proposes to develop and validate a new concept of temporal-spatial pulse representation for nine couples for seismic moment tensor, which can be used to model various dislocation sources such as seismic source rupture and material crack mechanism. The proposed representation can intrinsically integrate the spatial and temporal features of the sources, which is sound in comparison with the traditional approach with the use of two separate factors, i.e., one from the spatial-based couples and the other from a source time function that is typically assumed and thus not fully inherent to the temporal features of the source. Successful accomplishment of the project will not only improve understanding of temporal-spatial mechanism of the dislocation sources. It will also have broad impacts such as diagnosing crack damage in structural health monitoring, simulating earthquake motion for structural design/retrofit, conducting seismic survey for oil/gas exploration, and assessing influences of explosions in structures.