Earth Observation Systems

We develop new experimental methods in the field and laboratory, which are applicable to recording and analyses of various types of earthquake data. These studies provide a better understanding of the mechanisms of earthquakes.
1) Measurements of earth’s free oscillations using laser strainmeters, bore-hole strain meters, STS seismometers, and pore-pressure meters.
2) Application of ambient noise correlation to investigating subsurface structures around seismic faults.
3) Study of the triggering of small earthquakes and non-volcanic tremor caused by the passage of seismic waves from distant large earthquakes.

Earthquake triggering from the 2011 Tohoku-Oki earthquake
Strain seismograms from the Mar.11,2011 earthquake

Faculty Members

  • Associate ProfessorMasatoshi Miyazawa


  • Assistant ProfessorWataru Morii