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[AHW24-08] River water change after the 2016 Kumamoto earthquake
Keywords:2016 Kumamoto earthquake, river water , new fault fracture zone
In the Shirakawa, river discharges joust after the main shock showed increase and decrease trends at the Yoshihara bridge (upstream) and the Yotsugi bridge (downstream), respectively. Difference in river discharge between these bridgeds was estimated approximately 100,000 m^3 during 12 hours just after the main shock. A new fault fracture zone (Suizenji faults) was found between these bridges, so there is a possibility that huge volume of river water was flowing into the faults.