Abstract
Supercritical geothermal systems (SGS) have the potential to significantly increase the amount of geothermal power generation. Researches and studies on SGS are being conducted worldwide. In Japan, the New Energy and Industrial Technology Development Organization (NEDO) has started to research and development of supercritical geothermal power generation on SGS recently. Various studies have been conducted in and around the Niseko Mountains in the Shiribeshi region of Hokkaido, Japan to detect supercritical geothermal systems in the Niseko area including geological, electromagnetic, seismic and temperature analyses. Based on three-dimensional structures obtained from these studies, we constructed a conceptual model of supercritical geothermal systems in and around the Niseko Mountains. The shallowest part of the supercritical geothermal systems in the Niseko area was detected at approximately -3 km a.s.l. below Mt. Iwao-nupuri and Mt. Chise-nupuri.
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