Japan Geoscience Union Meeting 2016

Presentation information


Symbol S (Solid Earth Sciences) » S-MP Mineralogy & Petrology

[S-MP44] Dynamics of melt, ductile and brittle rock mass and energy system

Wed. May 25, 2016 1:45 PM - 3:15 PM 301A (3F)

Convener:*Noriyoshi Tsuchiya(Graduate School of Environmental Studies, Tohoku University), Hiroshi Asanuma(AIST), Yasuo Ogawa(Volcanic Fluid Research Center Tokyo Institute of Technology), Shigemi Naganawa(The University of Tokyo), Chair:Masaoki Uno(Graduate School of Environmental Studies, Tohoku University)

2:00 PM - 2:15 PM

[SMP44-02] Characterization and evaluation of supercritical geothermal resources in Tohoku District , Japan

*Noriyoshi Tsuchiya1, Ryoichi Yamada1 (1.Graduate School of Environmental Studies, Tohoku University)

Keywords:supercritical geothermal, seismic activity, volcanic activity

Supercritical geothermal resources in Tohoku District , Japan could be characterized by GIS, which includes geological approaches (caldera database Hot spring Data base, hydrothermal alteration Data base, Mine data base, granite data base) and by geophysical approaches (gravity survey, magneto telluric survey, seismic survey)
Supercritical geothermal resources could be evaluated in terms of present volcanic activities, thermal structure, dimension of hydrothermal circulation, properties of fracture system, depth of heat source, depth of brittle factures zone, dimension of geothermal reservoir.
On the basis of the GIS, potential of supercritical geothermal resources could be characterized into the following four categories. 1. Promising: surface manifestation d shallow high temperature, 2 Probability: high geothermal gradient, 3 Possibility: Aseismic zone which indicates an existence of melt, 4 Potentia : low velocity zone which indicates magma input.