研究期間：10108~10207;The high quality recording of TCDPBHS since November 2011 had provided us a decent observation in micro-earthquakes studies, which giving the discussion on the scaling of small to large earthquakes as ER/Mo. In addition to the micro-earthquakes, it shows several repeating events in a deformed zone, the observation also found interesting events, which show the waveforms with impulsive P-wave, but, no notable S-wave. We called these events, Ftype events. These events seem to have close association to the fluid interaction in the damage zone, suggesting an indication of nucleation of an event. This project will focus on the understanding of the non-double couple mechanism of the Ftype event to its association to the fault zone behavior. The modeling of the repeating events will be addressed to understand the dynamics of the seismo-tectonic setting as splayed fault to decollement. The fault zone healing studies through the possible evolution of the Q studies across the fault. The fault gouge analysis will be continued to have the further discussion with the rapid drilling project of the 2011 Tohoku earthquake, named J-FAST.
