[S-MP43] [JJ] Brittle-Ductile Transition and Supercritical Geofluids for Crustal Energy in Island Arc

Tue. May 23, 2017 1:45 PM - 3:15 PM 202 (International Conference Hall 2F)

convener:Noriyoshi Tsuchiya(Graduate School of Environmental Studies, Tohoku University), Hiroshi Asanuma(AIST), Yasuo Ogawa(Volcanic Fluid Research Center, School of Science, Tokyo Institute of Technology), Chairperson:Noriyoshi Tsuchiya(Graduate School of Environmental Studies, Tohoku University), Chairperson:Hiroshi Asanuma(AIST)

Nature of rock mass below the brittle-ductile transition (BDT) is of great scientific interest to understand various phenomena in the Earth's crust. We will review and discuss current understanding of characteristics the rock mass below the BDT, including composites, stress, failure mechanism induced by liquid injection and associates earthquake generation mechanism, and water rock interaction, considering engineered geothermal development in the BDT. Discussions on the possible phenomena in the geothermal development in the BDT will be followed in this session. New drilling technology is key of issues. This session will cover advanced drilling technology under high temperature conditions for energy extraction.

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1:45 PM - 2:00 PM

[SMP43-01] Behaviour of subducted water and its role in magma genesis in the NE Japan arc: A combined geophysical and geochemical approach

★Invited papers

*Jun-Ichi Kimura¹ (1.Department of Solid Earth Geochemistry, Japan Agency for Marine-Earth Scienc and Technology)

2:00 PM - 2:15 PM

[SMP43-02] Permeability and possibility of formation of supercritical geothermal resources in the ductile crust

*Noriaki Watanabe¹, Tatsuya Numakura¹, Kiyotoshi Sakaguchi¹, Hanae Saishu², Atsushi Okamoto¹, Steven E. Ingebritsen³, Noriyoshi Tsuchiya¹ (1.Graduate School of Environmental Studies, Tohoku University, 2.Renewable Energy Research Center, National Institute of Advanced Industrial Science and Technology (AIST), 3.US Geological Survey)

2:15 PM - 2:30 PM

[SMP43-03] Effect of the hydraulic stimulation on hydraulic fracturing characteristics and gain in permeability of high-temperature ductile granite

*Kiyotoshi Sakaguchi¹, Noriaki Watanabe¹ (1.Graduate School of Environmental Studies, Tohoku University)

2:30 PM - 2:45 PM

[SMP43-04] Silica dissolution and precipitation in granite fracture and its implications to porosity evolution in deep geothermal reservoirs

*Atsushi Okamoto¹, Hiroto Tanaka¹, Noriaki Watanabe¹ (1.Graduate School of Environmental Studies)

2:45 PM - 3:00 PM

[SMP43-05] Depth distribution and fluid saturation of the fossil calderas and their relations with geofluid activities at NE Japan

*Masaoki Uno¹, Ryoichi Yamada¹, Amanda Febiani Fajar¹, Satoshi Okumura² (1.Graduate School of Environmental Studies, Tohoku University, 2.Department of Earth Science, Graduate School of Science, Tohoku University)

3:00 PM - 3:15 PM

[SMP43-06] Variation of the brittle-ductile transition beneath New Zealand's geothermal systems: Imaging using 3-D passive seismic attenuation

*Stephen C Bannister¹, Sandra Bourguignon¹, Ted Bertrand¹, Adrian Harvison¹, Cameron Asher¹ (1.GNS Science, New Zealand)

Session information