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Inland Earthquake Lab
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A lab that works to uncover how inland earthquakes occur.
AboutAbout the lab
Inland earthquakes are very difficult.
The Inland Earthquake Lab aims to reduce damage from inland earthquakes by clarifying the still poorly understood processes by which they occur and developing methods to forecast them.
It is known that seismic activity becomes more active in southwestern Japan before a giant earthquake in the Nankai Trough.
Key terms
- Inland earthquake
- An earthquake that occurs on an active fault or similar structure inside a plate beneath land
- Strain rate
- A quantity that shows how fast the ground is stretching or shrinking
- GNSS
- A system that uses radio signals from satellites to precisely measure positions on the ground and their movement
ResearchResearch themes
The lab clarifies the poorly understood processes by which inland earthquakes occur and develops methods to predict their occurrence.
*Illustrative imageInland Earthquakes Are Very Difficult
Seismic activity is known to become more active in southwestern Japan before a giant Nankai Trough earthquake. The lab clarifies the poorly understood processes by which inland earthquakes occur and develops methods to predict their occurrence.
*Illustrative imageStrain of the Japanese Archipelago Seen by GNSS
The lab estimates the distribution of strain rate across the Japanese archipelago from GNSS data, develops inversion methods that incorporate sparse modeling, and investigates the effect of the Tohoku-oki earthquake on strain rates around the Noto Peninsula.
*Illustrative imageEarthquakes and Electromagnetic Phenomena
The lab theoretically studies electromagnetic phenomena accompanying earthquakes, for example by calculating piezomagnetic fields generated by fault motion in a layered elastic medium and by revising the equations describing coupled seismic and electromagnetic wavefields in the Earth's magnetic field.
*Illustrative imageDetecting Seismic Waves with Deep Learning
Using deep learning such as Vision Transformers, the lab develops models that automatically read seismic wave arrival times and P-wave first-motion polarity from records of Japan's seismic observation networks.
MembersFaculty
- ProfessorYukitoshi Fukahata
- Associate ProfessorKenichi Yamazaki
- Assistant ProfessorShinya Katoh
VoicesStudent voices
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Offshore Earthquake LabDisaster Prevention Research Institute, Research Center for Earthquake HazardsSeismologyThe information on this page is compiled by the LabLog team from the lab's public information and interviews. For corrections or removal requests, please contact LabLog, not the lab.
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: “Gomura Fault Ikunouchi Site C” さか
おり / CC BY-SA 4.0 (cropped) - Inland Earthquakes Are Very Difficult: “2004 Chuetsu earthquake Damaged building, Nagaoka 01” Naoki Sato / CC BY-SA 2.0 (cropped)
- Strain of the Japanese Archipelago Seen by GNSS: “GNSS-based control station in Minami-Tori-shima” 国土交通省国土地理院 / CC BY 4.0 (cropped)
- Earthquakes and Electromagnetic Phenomena: “George Simpson magnetometer” Herbert Ponting / Public domain (cropped)
- Detecting Seismic Waves with Deep Learning: “Earthquake Early Warning (Japan)-en” NoPineapplesOnPizza / CC BY-SA 4.0 (cropped)
- Related lab (Fault Physics Lab): “Subduction Zone Stratovolcano” Wade Greenberg-Brand/Paleontological Research Institution / CC BY-SA 4.0 (cropped)
- Related lab (Earthquake Information Lab): “Seismic Station ( )” daryl_mitchell from Saskatoon, Saskatchewan, Canada / CC BY-SA 2.0 (cropped)
- Related lab (Space Geodesy Lab): “GNSS reference station, White Park Bay” Rorosyfingers / CC BY-SA 4.0 (cropped)
- Related lab (Offshore Earthquake Lab): “Ocean Bottom Seismometer - Hongo Campus, the University of Tokyo - DSC04878” Daderot / CC0 (cropped)
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