Researcher Information


Associate Professor

Looking into the Earth using seismic signals

Department of Earth and Planetary Sciences, Earth and Planetary Dynamics


Development and application of seismic data analysis and geophysical inversion techniques for 3-D seismic imaging of the Earth's interior

FieldSeismology, Physics of the Earth and Planetary Interiors
KeywordEarthquakes, Internal structure of the Earth, Seismic Tomography, Seismic Waves, Heterogeneity, Anisotropy, Suface waves, Upper Mantle, Lithosphere, Asthenosphere
Fig1: 3-D image of the Australian contienntal lithosphere from multi-mode surface wave tomography
Fig2: Tomographic image of the North American upper mantle
Fig3: Numerical simulation of surface wave propagation
Fig4: Surface wave sensitivity kernels based on finite-frequency theory

Representative Achievements

Yoshizawa, K., and B. L. N. Kennett (2015), The lithosphere‐asthenosphere transition and radial anisotropy beneath the Australian continent, Geophys. Res. Lett., 42(10), 3839–3846.
Hamada, K., and K. Yoshizawa (2015), Interstation phase speed and amplitude measurements of surface waves with nonlinear waveform fitting: application to USArray, Geophys. J. Int., 202(3), 35–54.
Yoshizawa, K. (2014), Radially anisotropic 3-D shear wave structure of the Australian lithosphere and asthenosphere from multi-mode surface waves, Phys. Earth Planet. Inter., 235, 33–48.
Yoshizawa, K., K. Miyake, and K. Yomogida (2010), 3D upper mantle structure beneath Japan and its surrounding region from inter-station dispersion measurements of surface waves, Phys. Earth Planet. Inter., 183(1–2), 4–19.
Yoshizawa, K., and G. Ekström (2010), Automated multimode phase speed measurements for high-resolution regional-scale tomography: application to North America, Geophys. J. Int., 183(3), 1538–1558.
Academic degreePh.D.
Academic background1998 M.Sc., Hiroshima University
2002 Ph.D., Australian National University
2002-2007 Assistant Professor, Hokkaido University
2007-present Associate Professor, Hokkaido University
Affiliated academic societySeismological Society of Japan, Japan Geosciences Union, American Geophysical Union, Seismologial Society of America
Room addressScience Building #8 8-310