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Geothermal Sciences (Ishii) Lab
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The lab explores the Earth's heat in the volcanoes and hot springs of Kyushu.

AboutAbout the lab
The Earth is a giant heat engine driven by its internal heat.
The Institute for Geothermal Sciences regards central Kyushu, one of the largest volcanic and geothermal hot spring regions in the world, as a giant natural experimental apparatus. It analyzes thermal phenomena comprehensively through field observations and surveys, together with material-science and theoretical analyses.
By combining these results with findings at the global scale, the institute analyzes the thermal structure and thermal phenomena from the surface of the crust through the mantle to the core. Its goal is to build "Geothermics" as an integrated science.
As members of the Department of Earth and Planetary Sciences, the institute's faculty supervise the research of graduate and undergraduate students.
Key terms
- Geothermal heat
- Heat in the Earth's interior. It is the source of the heat of hot springs and volcanoes
- Hydrothermal water
- Water that has become hot underground
- Magma
- A high-temperature liquid formed when rock melts underground
ResearchResearch themes
The lab studies the various phenomena caused by heat sources in the Earth's interior through observational, experimental, and theoretical approaches.
View More ↗MembersFaculty
The members of the Institute for Geothermal Sciences are faculty, visiting professors, research fellows, technical staff, and administrative staff.As of 2026
- ProfessorShigekazu Kusumoto
- Associate ProfessorMitsuru Utsugi
- Assistant ProfessorKazuki Sawayama
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Japan Kyushu, Beppu hot spring 05” Marie-Sophie Mejan / CC BY 4.0 (cropped)
- Geothermal fluids and volcanic and geothermal activity: “Geysir Geothermal Field, Haukadalur Valley, Iceland” Jakub Hałun / CC BY-SA 4.0 (cropped)
- Related lab (Earth's Interior Electromagnetism Lab (Toh, World Data Center for Geomagnetism)): “"The Natural Wonder of the South- Taal Volcano"” Robertmarrel / CC BY-SA 4.0 (cropped)
- Related lab (Geodesy Lab): “GNSS reference station and road to Fivefinger Strand” Rorosyfingers / CC BY-SA 4.0 (cropped)
- Related lab (Volcano Physics Lab): “Mount Aso views ( )” Raita Futo from Tokyo, Japan / CC BY 2.0 (cropped)
- Related lab (Seismology Lab): “Historischer Seismograph” Ilyacadiz / CC BY-SA 4.0 (cropped)
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