<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>研究成果 | 石須 慶一</title><link>https://keiichiishizu.github.io/academic-website/research/</link><atom:link href="https://keiichiishizu.github.io/academic-website/research/index.xml" rel="self" type="application/rss+xml"/><description>研究成果</description><generator>HugoBlox Kit (https://hugoblox.com)</generator><language>ja</language><lastBuildDate>Wed, 29 Apr 2026 00:00:00 +0000</lastBuildDate><image><url>https://keiichiishizu.github.io/academic-website/media/icon_hu_da05098ef60dc2e7.png</url><title>研究成果</title><link>https://keiichiishizu.github.io/academic-website/research/</link></image><item><title>Publications / 学術論文</title><link>https://keiichiishizu.github.io/academic-website/research/publications/</link><pubDate>Wed, 29 Apr 2026 00:00:00 +0000</pubDate><guid>https://keiichiishizu.github.io/academic-website/research/publications/</guid><description>&lt;h2 id="査読つき学術論文筆頭著者--first-authored-peer-reviewed-papers"&gt;査読つき学術論文（筆頭著者 / First-authored peer-reviewed papers）&lt;/h2&gt;
&lt;h3 id="2025年"&gt;2025年&lt;/h3&gt;
&lt;ol&gt;
&lt;li&gt;
&lt;p&gt;&lt;strong&gt;&lt;strong&gt;Ishizu, K.&lt;/strong&gt;&lt;/strong&gt;, Goto, T. N., Fukahata, Y., Koike, K., Vachiratienchai, C., &amp;amp; Siripunvaraporn, W. (2025). Inversion algorithm determining sharp boundaries in electrical resistivity tomography. &lt;em&gt;Geophysics&lt;/em&gt;, 90(3), 1–46.
🔓 OA&lt;/p&gt;
&lt;/li&gt;
&lt;li&gt;
&lt;p&gt;&lt;strong&gt;&lt;strong&gt;Ishizu, K.&lt;/strong&gt;&lt;/strong&gt;, Ogawa, Y., Tseng, K.H., Kunitomo, T., Kitaoka, N., Caldwell, T.G., Minami, T., Serita, S., Ichihara, H., Bertrand, E.A., Heise, W. (2025). Controlled-source electromagnetic survey in a volcanic area: relationship between stacking time and signal-to-noise ratio and comparison with magnetotelluric data. &lt;em&gt;Geophysical Journal International&lt;/em&gt;, 240(2), 1107–1121.
🔓 OA&lt;/p&gt;
&lt;/li&gt;
&lt;/ol&gt;
&lt;h3 id="2024年"&gt;2024年&lt;/h3&gt;
&lt;ol&gt;
&lt;li&gt;
&lt;p&gt;&lt;strong&gt;&lt;strong&gt;Ishizu, K.&lt;/strong&gt;&lt;/strong&gt;, Oda, A., Goto, T., Kasaya, T., Watanabe, T., &amp;amp; Machiyama, H. (2024). Electrical resistivity tomography combined with seismic data estimates heterogeneous distribution of near-seafloor concentrated gas hydrates within gas chimneys. &lt;em&gt;Scientific Reports&lt;/em&gt;, 14(1), 15045.
🔓 OA&lt;/p&gt;
&lt;/li&gt;
&lt;li&gt;
&lt;p&gt;&lt;strong&gt;&lt;strong&gt;Ishizu, K.&lt;/strong&gt;&lt;/strong&gt;, Kasaya, T., Goto, T. N., Koike, K., Siripunvaraporn, W., Iwamoto, H., … &amp;amp; Ishibashi, J. I. (2024). A marine controlled-source electromagnetic application using towed and seafloor-based receivers capable of mapping seafloor and embedded massive sulfides. &lt;em&gt;Geophysics&lt;/em&gt;, 89(3), E87–E99.
&lt;/p&gt;
&lt;/li&gt;
&lt;/ol&gt;
&lt;h3 id="2022年"&gt;2022年&lt;/h3&gt;
&lt;ol&gt;
&lt;li&gt;
&lt;p&gt;&lt;strong&gt;&lt;strong&gt;Ishizu, K.&lt;/strong&gt;&lt;/strong&gt;, Siripunvaraporn, W., Goto, T. N., Koike, K., Kasaya, T., &amp;amp; Iwamoto, H. (2022). A cost-effective three-dimensional marine controlled-source electromagnetic survey: exploring seafloor massive sulfides. &lt;em&gt;Geophysics&lt;/em&gt;, 87(4), E219–E241.
&lt;/p&gt;
&lt;/li&gt;
&lt;li&gt;
&lt;p&gt;&lt;strong&gt;&lt;strong&gt;Ishizu, K.&lt;/strong&gt;&lt;/strong&gt;, 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. &lt;em&gt;Journal of Geophysical Research: Solid Earth&lt;/em&gt;, 127, e2021JB022911.
★ Top Downloaded Article (AGU, 2024)&lt;/p&gt;
&lt;/li&gt;
&lt;/ol&gt;
&lt;h3 id="2021年"&gt;2021年&lt;/h3&gt;
&lt;ol&gt;
&lt;li&gt;
&lt;p&gt;&lt;strong&gt;&lt;strong&gt;Ishizu, K.&lt;/strong&gt;&lt;/strong&gt;, Ogawa, Y., Mogi, T., Yamaya, Y., and Uchida, T. (2021). Ability of the magnetotelluric method to image a deep conductor: Exploration of a supercritical geothermal system. &lt;em&gt;Geothermics&lt;/em&gt;, 96, 102205.
&lt;/p&gt;
&lt;/li&gt;
&lt;li&gt;
&lt;p&gt;&lt;strong&gt;&lt;strong&gt;Ishizu, K.&lt;/strong&gt;&lt;/strong&gt;, and Ogawa, Y. (2021). Offshore-onshore resistivity imaging of freshwater using a controlled-source electromagnetic method: A feasibility study. &lt;em&gt;Geophysics&lt;/em&gt;, 86(6), E391–E405.
&lt;/p&gt;
&lt;/li&gt;
&lt;/ol&gt;
&lt;h3 id="2019年"&gt;2019年&lt;/h3&gt;
&lt;ol&gt;
&lt;li&gt;
&lt;p&gt;&lt;strong&gt;&lt;strong&gt;Ishizu, K.&lt;/strong&gt;&lt;/strong&gt;, Goto, T., Ohta, Y., Kasaya, T., Iwamoto, H., Vachiratienchai, C., Siripunvaraporn, W., Tsuji, T., Kumagai, H. and Koike, K. (2019). Internal structure of a seafloor massive sulfide deposit by electrical resistivity tomography, Okinawa Trough. &lt;em&gt;Geophysical Research Letters&lt;/em&gt;, 46(20), 11025–11034.
🔓 OA&lt;/p&gt;
&lt;/li&gt;
&lt;li&gt;
&lt;p&gt;&lt;strong&gt;&lt;strong&gt;Ishizu, K.&lt;/strong&gt;&lt;/strong&gt;, Vachiratienchai, C., Siripunvaraporn, W., Goto, T., Kasaya, T., &amp;amp; Iwamoto, H. (2019). Evaluations of effectiveness of marine deep-towed DC resistivity survey in investigation of seafloor massive sulfide deposits. &lt;em&gt;Geophysical Exploration&lt;/em&gt;, 72, 122–138 (in Japanese).
&lt;/p&gt;
&lt;/li&gt;
&lt;/ol&gt;
&lt;hr&gt;
&lt;h2 id="査読つき学術論文共著--co-authored-peer-reviewed-papers"&gt;査読つき学術論文（共著 / Co-authored peer-reviewed papers）&lt;/h2&gt;
&lt;h3 id="2025年-1"&gt;2025年&lt;/h3&gt;
&lt;ol&gt;
&lt;li&gt;
&lt;p&gt;Ishitsuka, K., &lt;strong&gt;&lt;strong&gt;Ishizu, K.&lt;/strong&gt;&lt;/strong&gt;, Watanabe, N., Yamaya, Y., Suzuki, A., Bandai, T., … &amp;amp; Sugimoto, T. (2025). Reliable and practical inverse modeling of natural-state geothermal systems using physics-informed neural networks: Three-dimensional model construction and assimilation with magnetotelluric data. &lt;em&gt;JGR: Machine Learning and Computation&lt;/em&gt;, 2(3), e2025JH000683.&lt;/p&gt;
&lt;/li&gt;
&lt;li&gt;
&lt;p&gt;Yamashita, N., Goto, T. N., &lt;strong&gt;&lt;strong&gt;Ishizu, K.&lt;/strong&gt;&lt;/strong&gt;, Umakoshi, K., &amp;amp; Sasaki, H. (2025). Detailed resistivity structure by high-density AMT surveys in the geothermal area: A case study near Unzen volcanoes, Japan. &lt;em&gt;Journal of Volcanology and Geothermal Research&lt;/em&gt;, 108466.&lt;/p&gt;
&lt;/li&gt;
&lt;/ol&gt;
&lt;h3 id="2022年-1"&gt;2022年&lt;/h3&gt;
&lt;ol&gt;
&lt;li&gt;Yamaya, Y., Suzuki, Y., Murata, Y., Okamoto, K., Watanabe, N., Asanuma, H., Hase, H., Ogawa, Y., Mogi, T., &lt;strong&gt;&lt;strong&gt;Ishizu, K.&lt;/strong&gt;&lt;/strong&gt;, Uchida, T. (2022). 3-D resistivity imaging of the supercritical geothermal system in the Sengan geothermal region, NE Japan. &lt;em&gt;Geothermics&lt;/em&gt;, 103, 102412.
&lt;/li&gt;
&lt;/ol&gt;</description></item></channel></rss>