https://keiichiishizu.github.io/academic-website/en/tags/mt/MTHugoBlox Kit (https://hugoblox.com)en-usSat, 01 Jan 2022 00:00:00 +0000https://keiichiishizu.github.io/academic-website/media/icon_hu_da05098ef60dc2e7.pnghttps://keiichiishizu.github.io/academic-website/en/tags/mt/https://keiichiishizu.github.io/academic-website/en/post/ishizu-2022-jgr/Sat, 01 Jan 2022 00:00:00 +0000https://keiichiishizu.github.io/academic-website/en/post/ishizu-2022-jgr/<p><strong>Ishizu, K. Ogawa, Y., Nunohara, K., Tsuchiya, N., Ichiki, M., Hase, H., et al. (2022). Estimation of spatial distribution and fluid fraction of a potential supercritical geothermal reservoir by magnetotelluric data: A case study from Yuzawa geothermal field, NE Japan. Journal of Geophysical Research: Solid Earth, 127, e2021JB022911.</strong></p> <h3 id="point-1-successful-visualization-of-a-supercritical-geothermal-reservoir">Point 1: Successful visualization of a supercritical geothermal reservoir</h3> <h3 id="point-2-most-important-discovery-of-a-silica-cap-layer-above-the-supercritical-geothermal-reservoir-and-its-role-in-reservoir-formation">Point 2 (Most Important): Discovery of a silica cap layer above the supercritical geothermal reservoir and its role in reservoir formation</h3> <p>This research relates to new technologies that can contribute to reducing carbon dioxide emissions. Using supercritical geothermal reservoirs for power generation is expected to enable higher power output compared to conventional hydrothermal reservoirs (below 350°C). However, the development mechanisms and spatial distribution of these reservoirs were previously unknown. In this study, we used electromagnetic exploration to visualize the spatial distribution of a supercritical geothermal reservoir and elucidated its development mechanism by incorporating temperature information from drilling. The mechanism suggests that as magma below the reservoir solidifies, it releases fluids, providing supercritical geothermal fluids to the area above. These fluids are restricted from further upward migration by a silica cap layer, resulting in the accumulation of supercritical fluids and the development of the reservoir below the cap. We believe this is the first study to quantitatively clarify the relationship between the silica cap layer and the supercritical geothermal reservoir suggested by geophysical exploration using silica solubility calculations.</p> <p>Press release articles can be read here: </p> <p> <figure > <div class="flex justify-center "> <div class="w-full" > <img alt="The figure is modified from Ishizu et al. (2022) JGR." srcset="https://keiichiishizu.github.io/academic-website/post/ishizu-2022-jgr/featured_hu_5d55f87f5ffe0250.webp 320w, https://keiichiishizu.github.io/academic-website/post/ishizu-2022-jgr/featured_hu_2b3889c66a3c41a0.webp 480w, https://keiichiishizu.github.io/academic-website/post/ishizu-2022-jgr/featured_hu_73a74ce0b2e6d6e3.webp 760w" sizes="(max-width: 480px) 100vw, (max-width: 768px) 90vw, (max-width: 1024px) 80vw, 760px" src="https://keiichiishizu.github.io/academic-website/post/ishizu-2022-jgr/featured_hu_5d55f87f5ffe0250.webp" width="760" height="284" loading="lazy" data-zoomable /></div> </div></figure> </p>