TY - JOUR
T1 - Evaluation of a potential supercritical geothermal system in the Kuju region, central Kyushu, Japan
AU - Kitamura, Keigo
AU - Fujii, Yuki
AU - Inagaki, Haruhiro
AU - Aizawa, Koki
AU - Ishibashi, Jun ichiro
AU - Saito, Hiroki
AU - Fujimitsu, Yasuhiro
N1 - Funding Information:
This study was conducted with support from the project “Potential survey and estimation of power generation of supercritical geothermal resources in East Japan and Kyushu, Japan (FY2018–2020)” funded by New Energy and Industrial Technology Development Organization (NEDO), Japan. We deeply thank anonymous reviewers for constructive comments that helped improve the manuscript.
Publisher Copyright:
© 2022 Elsevier Ltd
PY - 2023/1
Y1 - 2023/1
N2 - We derived the thermal structure of the Kuju region of volcanic activity in central Kyushu, Japan, to assess the potential existence of a supercritical geothermal system. Extrapolation of existing well-logging data suggests the presence of a high-temperature region beneath the area between the Hatchobaru geothermal power plant and Kuju-Iwoyama Volcano, which closely overlaps a low-resistivity body estimated from magnetotelluric data. Based on estimated temperatures exceeding 380 °C at the relatively shallow depth of -3.3 km above sea level, and considering evidence for magmatic fluid transport, this high-temperature region is a potential target for a supercritical geothermal reservoir.
AB - We derived the thermal structure of the Kuju region of volcanic activity in central Kyushu, Japan, to assess the potential existence of a supercritical geothermal system. Extrapolation of existing well-logging data suggests the presence of a high-temperature region beneath the area between the Hatchobaru geothermal power plant and Kuju-Iwoyama Volcano, which closely overlaps a low-resistivity body estimated from magnetotelluric data. Based on estimated temperatures exceeding 380 °C at the relatively shallow depth of -3.3 km above sea level, and considering evidence for magmatic fluid transport, this high-temperature region is a potential target for a supercritical geothermal reservoir.
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U2 - 10.1016/j.geothermics.2022.102602
DO - 10.1016/j.geothermics.2022.102602
M3 - Article
AN - SCOPUS:85141325855
SN - 0375-6505
VL - 107
JO - Geothermics
JF - Geothermics
M1 - 102602
ER -
