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Ando Lab
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A lab that tackles the mysteries of earthquakes and faults through numerical computation and field surveys.
AboutAbout the lab
Unraveling the mysteries of earthquakes and faults through computation and fieldwork
Ando Lab studies the mechanisms of tectonics, including earthquake generation.
The lab aims to build a comprehensive framework for understanding how stress accumulates on faults until they rupture, and how Earth's interior and surface deform.
In many of its studies, the lab uses numerical computation to explain a wide range of observational data in terms of fundamental physical components.
To reconstruct past earthquakes preserved in strata and landforms, the lab also conducts field surveys and develops new analysis methods.
Key terms
- Tectonics
- Deformation of the Earth, such as crustal deformation and the formation of faults, caused by processes like plate motion
- Boundary integral equation method
- A numerical method that discretizes only boundaries such as faults and computes how waves and rupture propagate
- Slow earthquakes
- Phenomena in which a fault slips much more slowly than in an ordinary earthquake
NewsLab news
Analysis of image data of fault movement captured very close to the Hinagu fault zone (preliminary report)
Interpretation of the relationship between the 2026 Kumamoto earthquake and the 3D fault geometry of the Futagawa fault zone released
ResearchResearch themes
The lab aims to build a framework for understanding tectonic phenomena, including earthquake generation, such as the accumulation of stress on faults and their rupture. Its research combines numerical simulation and the development of computational methods with field surveys in geology and geomorphology.
*Illustrative imageReproducing great earthquakes through computation
The lab is working on reproducing recent great earthquakes through forward modeling (simulation), using data on the stress field and fault geometry that were available before each event. For the 2016 Kaikoura earthquake in New Zealand, the simulation reproduced the major features of the fault slip.
*Illustrative imageTracing the recurrence of Kanto earthquakes through geological records
Through detailed geological and geomorphological surveys in the southern Boso Peninsula, the lab found that uplift from Genroku-type Kanto earthquakes occurred at least five times over the past approximately 6,300 years. The results show that the recurrence intervals are shorter and more variable than previously thought.
*Illustrative imageMaking earthquake simulations faster
The boundary integral equation method, which calculates waves traveling along faults and the ground surface, has been very computationally demanding. Working with researchers in applied mathematics, the lab has developed the fastest algorithm available, with a view to using supercomputers to examine multiple scenarios for great earthquakes.
*Illustrative imageA model of how slow earthquakes work
The lab considers a heterogeneous fault in which patches that rupture abruptly are scattered within a region that slips slowly and smoothly. By considering the frictional properties of the fault and their distribution, the lab is building a model that explains slow earthquakes in physical terms.
MembersFaculty
The members of Ando Lab consist of faculty and students in the doctoral and master's programs.As of 2026
- Associate ProfessorRyosuke AndoPublications ↗
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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: “Chelongpu Fault rupture as it crosses Dakeng” MiNe / CC BY 2.0 (cropped)
- Reproducing great earthquakes through computation: “Kaikoura-uplift1” IcknieldRidgeway / CC BY-SA 4.0 (cropped)
- Tracing the recurrence of Kanto earthquakes through geological records: “Middleton-island-terrace-1964” U.S. Geological Survey / Public domain (cropped)
- Making earthquake simulations faster: “RIKEN R-CCS Fugaku” Barsaka2 / CC0 (cropped)
- A model of how slow earthquakes work: “Offshore northern California magnitude 6.4 earthquake (2-34 AM, 20 December 2022)” James St. John / CC BY 2.0 (cropped)
- Related lab (Rock Structure (Wallis) Lab): “Folded Schist near Errislannan in County Galway in Ireland - geograph 4654567” Jonathan Wilkins (https://www.geograph.org.uk/profile/7090) / CC BY-SA 2.0 (cropped)
- Related lab (Takei Lab): “Olivine in polarizing light” Islam90 / CC BY-SA 4.0 (cropped)
- Related lab (Isse Lab): “Pacific Ocean laea relief location map” Uwe Dedering / CC BY-SA 3.0 (cropped)
- Related lab (Kawai Lab): “Seismogram at Weston Observatory” Z22 / CC BY-SA 3.0 (cropped)
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