Theoretical study on seismic interferometry and its application to shallow subsurface exploration

多次散射波在地震学中常被认为是“噪声”，在地震记录分析中已被滤除。然而，在最近出现的地震干涉测量之后，重新评估了多次散射波用于澄清地球中小尺度非均匀性的益处。在这项研究中，我们已经能够更深入地了解地震干涉测量。在此基础上，提出了一种探测浅层速度结构的方法，并成功地应用于真实的资料。通过这些研究，我们已经能够提高地震干涉测量和多次散射波的适用性和有用性。

Multiple scattering waves have been often considered to be "noise" in seismology, and have been filtered out in the analysis of seismograms. However, benefit of multiple scattering waves for clarifying small-scale heterogeneities in the Earth is reappraised after the recent advent of seismic interferometry. In this study, we have been able to understand seismic interferometry in deeper depth. Based on our new findings, we have developed a method for exploring shallow subsurface velocity structures, and applied the method to real data successfully. Through these studies, we have been able to improve the applicability and usefulness of seismic interferometry and multiple scattering waves.