Researcher Information



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

FieldGlobal Seismology, 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

Tarumi, K. and Yoshizawa, K. (2023). Eruption sequence of the 2022 Hunga Tonga-Hunga Ha’apai explosion from back-projection of teleseismic P waves, Earth Planet. Sci. Lett., 602, 117966.
Yoshida, M., and Yoshizawa, K. (2021). Continental Drift with Deep Cratonic Roots, Ann. Rev. Earth Planet. Sci., 49(1), 117-139.
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.
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., 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., Graduate School of Science, Hiroshima University
2002 Ph.D., Research School of Earth Sciences, Australian National University
2002-2007 Assistant Professor, Faculty of Science, Hokkaido University
2007-2023 Associate Professor, Faculty of Science, Hokkaido University
2008−2010 Visiting Scientist, Lamont-Doherty Earth Observatory, Columbia University
2012-2013, 2015-2016 Visiting Associate Professor, Earthquake Research Institute, University of Tokyo
2023-present Professor, Faculty of Science, Hokkaido University
Affiliated academic societySeismological Society of Japan, Japan Geosciences Union, American Geophysical Union, Seismological Society of America, Society of Exploration Geophysicists
Room addressScience Building #8 8-310