Using a geophysical exploration method to understand underground characteristics that are invisible from the surface

The safeties of ground structures such as buildings and bridges and of underground structures such as tunnels largely depends on the properties of the underground. For this reason, it is important to understand the properties of the ground in order for people to live safe and fulfilling lives. My research aims to understand underground conditions and characteristics, which are invisible from the surface, using a geophysical exploration method. I also conduct questionnaire surveys on seismic intensities with individual residents to obtain detailed information on seismic intensity distributions within a certain area following a large earthquake in order to estimate the degree of earthquake hazard.