Deep ground structure imaging by the seismic interferometry of strong ground motion record

开展了利用强震记录探测深部地面结构的研究。这项研究包括弹性波在二维各向同性散射介质中的辐射传输、S波的频变衰减和岩石圈的短波不均匀以及均匀半空间中的非定常射线分解等地球物理问题。此外，我们的研究还证明了强地震动记录的地震干涉测量对于研究深部地面结构的响应函数是非常有效的，并成功地成像了关东平原的深部地面结构。

The research to explore the deep ground structure by using the strong ground motion record was conducted. This research includes the geophysical topics such as the radiative transfer of elastic waves in two-dimensional isotropic scattering media, frequency-dependent attenuation of S-waves and short wavelength heterogeneity of the lithosphere, and the nonstationary ray decomposition in a homogeneous half space. In addition, our research demonstrated that the seismic interferometry of strong ground motion record is very effective to investigate the response function of deep ground structure, and imaged the deep ground structure of the Kanto plain successfully.