Japan Geoscience Union Meeting 2014

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Symbol S (Solid Earth Sciences) » S-TT Technology & Techniques

[S-TT58_30PM2] Airborne surveys and monitoring of the Earth

Wed. Apr 30, 2014 4:15 PM - 6:00 PM 313 (3F)

Convener:*Shigekazu Kusumoto(Graduate School of Science and Engineering for Research, University of Toyama), Shigeo Okuma(Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST)), Yuji Mitsuhata(AdvancedIndustrial Science and Technology), Takao Koyama(Earthquake Research Institute, University of Tokyo), Chair:Yuji Mitsuhata(AdvancedIndustrial Science and Technology), Shigekazu Kusumoto(Graduate School of Science and Engineering for Research, University of Toyama)

4:15 PM - 4:30 PM

★ [STT58-01] Regional Airborne Survey for the Evaluation of Geothermal Potential in Japan

*Tadaaki SHIMADA1, Katsumi TAKAI1, Kazuhiro MIYAKE1, Koichi HISATANI1, Toshiyuki TOSHA1 (1.Japan Oil, Gas and Metals National Corporation)

Keywords:airborne survey, geothermal resources, gravity, gravity survey, electromagnetic survey

Japan Oil, Gas and Metals National Corporation (JOGMEC) supports smooth development of geothermal resources in Japan by providing assistance to geological, geophysical, and well-drilling surveys, equity capital or liability guarantees, and information and data on geothermal resources. As part of them, we planned to conduct evaluation of geothermal potential with airborne technique of gravity gradiometer method and time-domain electromagnetic method. The gravity gradiometer method measures the differential of gravity, and provides information of much detailed geological structures. The time-domain EM method provides deeper penetration data than the frequency-domain EM method. Since these methods are state-of-the-art techniques, we demonstrated them first in a couple of area with relatively high geothermal potentials and a lot of surveys conducted. We carried out airborne survey with the technique of the gravity gradiometer method in the Kuju and the Kirishima areas in 2013. We would like to introduce the result of the airborne survey.The authors thank local municipalities and related organizations for their understanding and cooperation to conduct the airborne survey.