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Ishiyama Lab
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A lab that explores earthquakes and the formation of the Japanese Archipelago through active faults and topography.
AboutAbout the lab
Understanding earthquakes through the features of active faults
Ishiyama Lab studies active faults and the seismogenic faults that give rise to earthquakes.
For active faults located undersea or along the boundary between sea and land, the overall picture, including their shape, distribution, and slip rate, is still not well understood.
In addition to field surveys of topography and geology, the lab conducts research using methods that span several fields, such as numerical modeling and geophysical observation.
Students can take on a wide range of problems, matched to their interests and strengths.
Key terms
- Active fault
- A fault that has repeatedly slipped in the recent geological past and is expected to move again in the future
- Seismogenic fault
- The fault surface underground that actually slips during an earthquake
- Slip rate
- A measure of the average speed at which a fault slips over a long period of time
ResearchResearch themes
Clarifying the connection between active faults and seismogenic faults is essential for understanding how earthquakes occur. The lab combines field surveys in tectonic geomorphology, structural geology, and Quaternary geology with numerical modeling, geophysics, and seismic observation, and conducts joint research with researchers inside and outside the university.
*Illustrative imageActive faults at the boundary between sea and land
The lab investigates active faults located undersea or along the boundary between sea and land, as well as blind faults that do not appear at the surface, to clarify the overall picture that is still unknown, including their structure, distribution, and slip rate.
*Illustrative imageGeometry of major active faults in the Japanese Archipelago
The lab investigates the geometry, from shallow to deep levels, of the major active faults that have shaped the Japanese Archipelago, such as the Median Tectonic Line and the Itoigawa-Shizuoka Tectonic Line, as well as the three-dimensional geometry of seismogenic faults.
*Illustrative imageIsland arc topography and crustal evolution
The lab seeks to understand earthquakes on active faults within the continental plate in terms of interactions between plates, and investigates the evolution of island arc topography and crustal structure that accompanies plate motion.
*Illustrative imageField-based research on active faults and tectonic landforms
Centered on field surveys of topography and geology in Japan and abroad, the lab studies active faults, tectonic landforms, and tectonics.
MembersFaculty
Members of Ishiyama Lab include faculty, project researchers, research students, and master's students.As of 2025
- Associate ProfessorTatsuya IshiyamaPublications ↗
- Assistant ProfessorYoshiki Shirahama
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: “Arakura Fault of the Itoigawa-Shizuoka Tectonic Line” Sakaori (talk) / CC BY-SA 3.0 (cropped)
- Active faults at the boundary between sea and land: “Kuroshima Beach in Wajima, Ishikawa, Japan after the 2024 Noto Peninsula Earthquake” Yasu (talk) / CC BY-SA 3.0 (cropped)
- Geometry of major active faults in the Japanese Archipelago: “Median Tectonic Line-Kitagawa outcrop-02” KAMUI / CC BY-SA 3.0 (cropped)
- Island arc topography and crustal evolution: “Satellite View of Japan 1999” SeaWiFS Project, NASA/Goddard Space Flight Center, and ORBIMAGE / Public domain (cropped)
- Field-based research on active faults and tectonic landforms: “Gomura Fault Ikunouchi Site A” さか
おり / CC BY-SA 4.0 (cropped) - Related lab (Watada Lab (Earth and Planetary Dynamics)): “SWOT Satellite Measures Pacific Tsunami (PIA26652)” NASA/JPL-Caltech / Public domain (cropped)
- Related lab (Kano Lab): “Kawaraban-of-1855-Ansei-Edo-earthquake” A news broadsheet “Kawaraban”, 1855 / Public domain (cropped)
- Related lab (Miyake Lab (Earthquake Research Institute, Division of Earthquake and Volcano Disaster Research)): “Aso house damaged by the 2016 Kumamoto earthquake 2” hanonimas / CC BY-SA 3.0 (cropped)
- Related lab (Furumura Lab): “Skyscrapers of Nishi Shinjuku over Kanda River from Nakano, Tokyo, Japan, 2024 May” Ximonic (Simo Räsänen) / CC BY-SA 4.0 (cropped)
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