Imaging of Earthquake Sources Using Elastic Waves

作为以前NSF支持的研究（EAR 85-07929）的一部分，开发了弹性波逆时外推的软件。这是在地球结构成像的背景下完成的，但是，同样的概念也可以直接应用于震源成像。现有的地震成像研究使用声波方程，因此只考虑纵波。因此，现在有能力通过用弹性波动方程外推观测结果来产生P波和S波的并发图像，这是拟议研究的目标。

As part of previous NSF supported research (EAR 85-07929), software was developed for reverse-time extrapolation of elastic waves. This was done in the context of imaging of Earth structure, but, the same concepts may also be directly applied to imaging of earthquake sources. Exiting studies of earthquake imaging use the acoustic wave equation, so that only P-waves are considered. Thus, the ability now exists to produce concurrent images of both the P and S waves by extrapolating the observations with the elastic wave equation and this is the goal of the proposed research.