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Okamoto-Oyanagi Lab
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The lab reads how the Earth's interior works from rocks, which act as a recording medium.

AboutAbout the lab
Reading the workings of the Earth's interior from rocks.
The Okamoto-Oyanagi Lab reads the reactions and mass transport that take place inside the Earth from rocks, which serve as a recording medium.
It combines field surveys, reaction experiments that recreate conditions in the Earth's interior, and the latest analytical techniques.
The lab takes on questions about the interplay of the geosphere, hydrosphere, and biosphere, as well as the unsolved problems of crustal fluids and how earthquakes occur.
Building on this understanding, the lab is advancing evaluation and prediction aimed at the effective use of new mineral resources and the Earth's energy.
Key terms
- Rock-fluid interaction
- Reactions between rock and fluids in the subsurface, such as water and CO₂. A small amount of fluid can dramatically change chemical reactions and mass transport.
- Hydrothermal experiment
- Reproducing in the laboratory the reactions of rocks and minerals in water at high temperature and pressure.
- Geosphere
- The solid parts of the Earth (rock, crust, mantle, etc.). Used alongside the hydrosphere and biosphere.
- Data-driven science
- An approach to research that finds patterns in large amounts of data and uses them to understand and predict phenomena.
ResearchResearch themes
Fluids in the Earth's interior dramatically accelerate slow geological processes, triggering earthquakes and volcanic eruptions while also forming mineral resources and geothermal energy. The lab aims to understand the geosphere systems driven by these fluids and to think about ways of using resources and energy in harmony with the Earth.
*Illustrative imageUnderstanding the dynamic Earth system
The lab views the crust and mantle as a dynamic system and considers how human society can live in harmony with an active Earth. Processes in the Earth's interior produce resources and energy, but they also cause disasters such as earthquakes and volcanic eruptions.
*Illustrative imageRock-fluid interactions
Chemical reactions and mass transport, which proceed extremely slowly in solid rock, change dramatically when a small amount of fluid is involved. The lab investigates this through fieldwork, hydrothermal experiments, numerical simulations, and more, aiming to evaluate and predict geosphere environments and put them to effective use.
*Illustrative imageTaking on the unknown underground
The ground several kilometers below the surface is an unknown frontier that humans have yet to reach. The lab recreates conditions of the Earth's interior in the laboratory and uses data-driven science, such as machine learning, to link noisy, sparse data.
MembersFaculty
The Okamoto Lab consists of faculty members and doctoral, master's, and undergraduate students.As of 2026
- ProfessorAtsushi Okamoto
- Assistant ProfessorOtgonbayar Dandar
- Assistant ProfessorRyosuke Oyanagi
VoicesStudent voices
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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: “00 3571 Geothermal power plant in New Zealand” W. Bulach / CC BY-SA 4.0 (cropped)
- Understanding the dynamic Earth system: “Lava fountaining (11 September 2023) (summit of Kilauea Volcano, Hawaii) 1” James St. John / Public domain (cropped)
- Rock-fluid interactions: “Thin section scan crossed polarizers Siilinjärvi R edit” kallerna / CC BY-SA 4.0 (cropped)
- Taking on the unknown underground: “Krafla geothermal power plant” Hansueli Krapf / CC BY-SA 3.0 (cropped)
- Related lab (Iizuka-Ho Lab): “ČBu, wastewater treatment plant 02” Czeva / CC BY-SA 4.0 (cropped)
- Related lab (Sakaguchi-Satomi-Sueyoshi Lab): “GeysersGeothermalDrilling1977” Max Crittenden / Public domain (cropped)
- Related lab (Watanabe-Wang Lab): “Sasso 2 Geothermal Power Plant” T. AGEMAR / CC BY 4.0 (cropped)
- Related lab (Chien-Han Lab): “OR )” U.S. Department of Energy from United States / Public domain (cropped)
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