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Tsuji Lab
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The lab explores beneath the surface of the Earth and the Moon and applies its findings to resource, energy, and environmental issues.
AboutAbout the lab
Exploring the Earth and space to capture their structure and motion
The Tsuji Lab studies seismic exploration techniques that image the subsurface structure of the Earth, the Moon, and Mars, as well as monitoring techniques that capture movement underground.
Knowing the state of the subsurface is critically important for CO2 reduction and energy development, such as geological CO2 storage and geothermal energy.
To support disaster prevention, the lab also develops monitoring technology to predict earthquakes and volcanic activity in the Japanese archipelago.
The lab also develops instruments for space exploration and analyzes data obtained in space.
Key terms
- Geological CO2 Storage (CCS)
- A technology that captures CO2 emitted from factories and other sources and traps it for storage in deep underground rock formations.
- Monitoring
- Continuously keeping watch over the state of a target by measuring it repeatedly.
- Seismic Source
- A device that artificially shakes the ground. The condition of the subsurface is investigated from how the vibrations travel through it.
- Seismic Exploration
- A method of investigating the structure beneath the ground by measuring how artificially generated vibrations are reflected underground.
NewsLab news
Paper on identifying ground structure models from earthquake observation records published in the Journal of Japan Association for Earthquake Engineering
Paper released on the compact seismic source PASS and a rover-mounted exploration instrument for lunar exploration
Paper released on automatic earthquake detection from DAS data using machine learning
Announcement of a pedestrian-flow monitoring technology that estimates the number of pedestrians with a single seismometer
Compact seismic source PASS adopted for the lunar surface exploration instrument of NASA's Artemis IV
ResearchResearch themes
The lab conducts research on exploring the Earth and space to capture their structure and motion. It develops exploration technologies that image subsurface structure and monitoring technologies that capture subsurface movement.
Exploration for CO2 Reduction and Energy
The lab develops methods for analyzing exploration data as well as exploration tools. An ultra-compact seismic source developed in the lab makes it possible to continuously monitor stored CO2, and the lab aims to put it to practical use in CCS projects.
Capturing the Motion of Earthquakes and Volcanoes
The lab is building a monitoring system that captures movement within the crust using data from seismometers deployed across the Japanese archipelago. It also uses exploration data to investigate the stress conditions around faults in the Nankai Trough and the Japan Trench.
*Illustrative imageExploring the Moon and Mars
The lab analyzes data from seismometers placed on Mars and the Moon, and measures the physical properties of samples such as those from Hayabusa2. It also works on developing exploration tools for use on the lunar surface.
MembersFaculty
The Tsuji Lab's members include faculty; senior researchers, project researchers, and research staff; senior engineers and technical specialists; secretaries; and doctoral, master's, and undergraduate students.As of 2026
- ProfessorTakeshi TsujiPublications ↗
- Project Associate ProfessorArata KiokaPublications ↗
- Assistant ProfessorKota MukumotoPublications ↗
VoicesStudent voices
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Report an errorAbout the images
For images provided to us or used with permission, the source is listed on each line. Wikimedia Commons images are illustrative and were not taken at the lab (they are cropped). Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Full moon partially obscured by atmosphere” NASA / Public domain (cropped)
- Exploration for CO2 Reduction and Energy: “PASS installed at a CCS field in the United States” 辻研究室 / 研究室からの
提供 (cropped) - Capturing the Motion of Earthquakes and Volcanoes: “Seismic Observation at Mount Aso” 辻研究室 / 研究室からの
提供 (cropped) - Exploring the Moon and Mars: “Image of PASS for lunar exploration” NASA-JPL/Caltech / 研究室経由で
提供 - Related lab (Matsushima Lab): “Geophone Cables and Seismic Vibrator Trucks” Wsx2 / CC BY-SA 3.0 (cropped)
- Related lab (Kato-Nakamura-Yasukawa Lab): “Deep Discoverer ferromanganese nodules North Atlantic 2021” NOAA
（撮影者不明） / Public domain (cropped) - Related lab (Kobayashi Lab): “U.S. Department of Energy - Science - )” U.S. Department of Energy / Public domain (cropped)
- Related lab (Tokoro-Takaya Lab): “Froth flotation” Andreslan / Public domain (cropped)
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