Member

FUKUDA, Junichi Associate Professor Earthquake Research Institute Office: ERI bldg. 1-409 E-mail: HP:
Research Field Geodesy, Crustal deformation Current Research Our research focuses on crustal deformation related to great earthquake cycles in subduction zones using geodetic observations and numerical models. For this purpose, we develop methods for modeling geodetically observed crustal deformation using numerical models that incorporate fault locking and slip along the plate boundary fault and viscoelastic mantle flow. We use these methods to study fault locking and slip before and after grate earthquakes, contributions of viscoelastic mantle flow to earthquake cycle deformation, fault frictional properties, and rheology of the asthenosphere. The above studies require methods for estimating parameters of complex numerical models using geodetic observations. We develop these methods based on mathematical theories of inverse problems, Bayesian statistics, and data assimilation. We also develop methods for estimating the spatial and temporal variation of fault slip and crustal deformation using geodetic data. Representative Publications 1. Fukuda, J., and K. M. Johnson (2021), Bayesian inversion for a stress-driven model of afterslip and viscoelastic relaxation: Method and application to postseismic deformation following the 2011 Mw 9.0 Tohoku-Oki earthquake, Journal of Geophysical Research: Solid Earth, 126, e2020JB021620, doi:10.1029/2020JB021620. 2. Fukuda, J. (2018), Variability of the space-time evolution of slow slip events off the Boso Peninsula, central Japan, from 1996 to 2014, Journal of Geophysical Research: Solid Earth, 123, 732-760, doi:10.1002/2017JB014709. 3. Fukuda, J., and K. M. Johnson (2010), Mixed linear-non-linear inversion of crustal deformation data: Bayesian inference of model, weighting and regularization parameters, Geophysical Journal International, 181, 1441-1458, doi:10.1111/j.1365-246X.2010.04564.x.

FUKUDA, Junichi

Associate Professor
Earthquake Research Institute

Office: ERI bldg. 1-409
E-mail:
HP:

Research Field

Geodesy, Crustal deformation

Current Research

Our research focuses on crustal deformation related to great earthquake cycles in subduction zones using geodetic observations and numerical models. For this purpose, we develop methods for modeling geodetically observed crustal deformation using numerical models that incorporate fault locking and slip along the plate boundary fault and viscoelastic mantle flow. We use these methods to study fault locking and slip before and after grate earthquakes, contributions of viscoelastic mantle flow to earthquake cycle deformation, fault frictional properties, and rheology of the asthenosphere.
The above studies require methods for estimating parameters of complex numerical models using geodetic observations. We develop these methods based on mathematical theories of inverse problems, Bayesian statistics, and data assimilation. We also develop methods for estimating the spatial and temporal variation of fault slip and crustal deformation using geodetic data.

Representative Publications

1. Fukuda, J., and K. M. Johnson (2021), Bayesian inversion for a stress-driven model of afterslip and viscoelastic relaxation: Method and application to postseismic deformation following the 2011 Mw 9.0 Tohoku-Oki earthquake, Journal of Geophysical Research: Solid Earth, 126, e2020JB021620, doi:10.1029/2020JB021620.
2. Fukuda, J. (2018), Variability of the space-time evolution of slow slip events off the Boso Peninsula, central Japan, from 1996 to 2014, Journal of Geophysical Research: Solid Earth, 123, 732-760, doi:10.1002/2017JB014709.
3. Fukuda, J., and K. M. Johnson (2010), Mixed linear-non-linear inversion of crustal deformation data: Bayesian inference of model, weighting and regularization parameters, Geophysical Journal International, 181, 1441-1458, doi:10.1111/j.1365-246X.2010.04564.x.