S2: Water Rock Interaction (Special Session)

[S2P-01] Development of simultaneous measurements of electrical resistivity and elastic-wave velocity of rock at high pressure

*Ikuo Katayama¹, Kazumasa Tanimoto¹ (1. Hiroshima University)

Keywords:Elastic-wave velocity, Electrical resistivity

Elastic wave velocity is sensitive to crack geometry, whereas electrical resistivity is highly dependent on crack connectivity. Therefore, simultaneous measurements of elastic-wave velocity and resistivity provide various properties of cracks in the rock. We have developed a system to simultaneously measure resistivity and elastic-wave velocity under high pressure (up to 200 MPa). In this presentation, we will give an overview of the measurement system and an example of its application to hydrostatic pressurization experiments on Aji-granite.