International Research Group for Rock Physics for Fractures

Project Gist

Elucidating invisible subsurface structure with the “eyes” of Rock Physics

Keywords

Rock Physics, Geothermal, Volcano, Earthquake, Imaging technology

Background and Purpose

For the development of geothermal and other earth resources, we need to monitor the subsurface structure to mitigate the risk (such as induced seismicity). However, since the actual subsurface structures cannot be visualized, the only way to estimate subsurface conditions is indirectly monitoring using remote observations (geophysical technique). In this project, in order to link fluid flow in fractures with observable rock physical properties (seismic velocity and electrical resistivity), we aim to create the world’s first research team of rock physics for fracture research, with the goal of developing a practical model of rock physical properties by young researchers and students led by a leading rock fracture researcher and a world authority on rock physics.

Project Achievements

We were able to create a foundation for collaboration that combined the knowledge, experience, and personal connections of the Japanese and U.S. members. The study group formed as part of this project were also more successful than expected, increasing the number of members to about five times the initial number, and developing into many joint research teams. Many of these collaborative research projects are still in progress, but we expect to publish many international co-authored papers in the future. In addition, active discussions are ongoing among highly-motivated young researchers to develop this team into a large Grant-in-Aid for Scientific Research project, which contribute to the development of earth resources and understanding of active tectonics.

Future Prospects

The young researchers gathered in this project are highly motivated and engaged in active discussions aimed at elucidating subsurface geophysical properties of complex subsurface systems, not limited to rock fractures. The project plans to create new joint research teams, apply for large research grants, and propose sessions at international conferences.

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Principal Investigator