Geochemical reproduction of source fluid for Matsushiro earthquake swarm; a natural analogue study on the dynamic leakage in CO2 geological storage

Abstract

Matsushiro earthquake swarm is considered to be a natural analogue of dynamic response associated with CO2 geological storage; the dynamic resoinse includes deformation, rupture and eventual leakage. Geochemical characteristics of source fluid are investigated so as to be an input parameter of fluid flow-rock mechanics coupled simulation analyzing the Matsushiro earthquake swarm. The source fluid is estimated to be higher in salinity than the groundwater recovered from deep well near the Matsushiro Fault.