SEGJ Technical Conference


Subsurface structures from train induced elastic waves using seismic interferometry


Abstract
We investigate an application of seismic interferometry to subway-induced elastic waves. This method propounded by Cleabout and Wapenaar. Since it is difficult to use a vibroseis or dynamite in urban areas, this approach might be useful for underground investigation for geotechnical purpose. This method constructs pseudo shot records between two receivers by calculating cross-correlation. In our study, we set survey line along the Kamogawa River in Kyoto city where the Keihan subway line is running. Here we analyze the subsurface structures using the vibration induced by the subway trains. Pseudo data from shear wave can observe reflection waves obviously.