An Attempt to estimate the migration process of deep fluid using S-wave splitting analysis

Hiratsuka, Shinya ; Saiga, Atsushi  ; Asamori, Koichi

Hydrothermal activity is generated in the Kii Peninsula although it is a non-volcanic region. High helium isotope ratio, low seismic velocity and low resistivity suggest that hydrothermal water is originated from deep fluid. This study attempt to estimate the migration process of deep fluid using seismological method so-called S-wave splitting analysis. The result shows that high anisotropic region may correspond to migration process of deep fluid, but it is necessary for more accumulation of seismological data.