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Earthquake Generation Mechanism Lab
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The lab seeks to understand how earthquakes work and prepares for them with new technologies such as optical fibers.
AboutAbout the lab
Understanding how earthquakes work, to prepare for them
The Earthquake Generation Mechanism Lab studies the physics of earthquake occurrence, source modeling, and real-time earthquake information for use in earthquake disaster prevention.
The lab also uses cutting-edge technologies such as fiber-optic sensing, together with seismic waveform data, to detect and investigate various natural hazard phenomena.
Key terms
- Earthquake Early Warning
- A system that announces an earthquake's occurrence and the intensity of its shaking before the strong shaking arrives
- Fiber-optic sensing
- A technology that uses optical fiber cables as sensors to measure things such as ground shaking
- Focal mechanism
- The direction in which a fault slipped, and how it slipped, during an earthquake
ResearchResearch themes
The lab studies the physics of earthquake occurrence, source modeling, real-time earthquake information, and the detection and investigation of natural hazard phenomena using methods such as fiber-optic sensing.
*Illustrative imageUnderstanding how earthquakes work to prepare for them
In addition to the physics of earthquake occurrence, source modeling, and real-time earthquake information, the lab studies the detection and investigation of various natural hazard phenomena using cutting-edge technologies such as fiber-optic sensing and seismic waveform data.
*Illustrative imageObserving earthquakes with optical fibers
Using fiber-optic sensing (DAS) records, the lab estimates the focal mechanisms of small earthquakes and images seismic-wave reflectors that are tilted and curved within the crust of western Japan.
*Illustrative imageEarthquake triggering by distant earthquakes
The lab investigates, at high resolution, the phenomenon in which shaking from a large earthquake triggers distant earthquakes. Using continuous waveform data from Southern California, it examines how triggering varies with intensity, time, and location (joint research).
*Illustrative imageMethods and validation for Earthquake Early Warning
The lab develops a new Earthquake Early Warning method (the extended IPF method) and also evaluates the performance of the Earthquake Early Warning issued during the 2024 Noto Peninsula Earthquake.
MembersFaculty
- ProfessorMasatoshi Miyazawa
- Associate ProfessorMasumi Yamada
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: “Optical fiber cable-07ASD” Asurnipal / CC BY-SA 4.0 (cropped)
- Understanding how earthquakes work to prepare for them: “Sisma three components” Luca De Siena / Public domain (cropped)
- Observing earthquakes with optical fibers: “Laying fiber optic cable along the lonely stretch of highway between Yakima and the Vernita Bridge ( )” Robert Ashworth from Bellingham, WA., USA / CC BY 2.0 (cropped)
- Earthquake triggering by distant earthquakes: “Seismogram tsunami amp5 day” Peter H. Rassmann / Public domain (cropped)
- Methods and validation for Earthquake Early Warning: “Earthquake-Early-Warning-on-Smartphone 01” RuinDig/Yuki Uchida / CC BY 4.0 (cropped)
- Related lab (強
震動研究分野): “2004 Chuetsu earthquake Damaged building, Nagaoka 02” Naoki Sato / CC BY-SA 2.0 (cropped) - Related lab (断層物理研究領域): “Subduction Zone Stratovolcano” Wade Greenberg-Brand/Paleontological Research Institution / CC BY-SA 4.0 (cropped)
- Related lab (地殻流体研究領域): “Yugama Crater ( )” TANAKA Juuyoh (田中十洋) / CC BY 2.0 (cropped)
- Related lab (巨大噴火研究領域): “Aira Caldera Relief Map, SRTM” Batholith / Public domain (cropped)
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