Researcher Information

FUKUSHIMA Shun

Assistant Professor

Unraveling earthquake phenomena through cutting-edge offshore seismic observation

Institute of Seismology and Volcanology, Ocean Bottom Seismology and Tsunami

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Theme

Elucidating the mechanisms of earthquakes and fault slip at plate boundaries through offshore seismic observations using ocean-bottom seismometers and fiber-optic sensing, combined with the development of new seismological theories and analysis techniques.

FieldMarine seismology, Observational seismology
KeywordOffshore seismic observation, Ocean-bottom seismometer, Fiber-optic sensing

Introduction of Research

We would like to unravel the mechanisms of earthquakes. Many earthquakes, including tsunami-generating (tsunamigenic) earthquakes, occur in marine areas. Therefore, we focus on the study of earthquakes in marine areas.
In particular, we conduct marine observations using ocean-bottom seismometers and fiber-optic sensing around Japan and the world. We also develop new theories and analysis methods to make full use of these new types of data. By combining new data with new methods, we aim to reveal the true mechanisms of earthquakes.

Representative Achievements

Fukushima, S., Shinohara, M., Nishida, K. et al. Detailed S-wave velocity structure of sediment and crust off Sanriku, Japan by a new analysis method for distributed acoustic sensing data using a seafloor cable and seismic interferometry. Earth Planets Space 74, 92 (2022).
Fukushima, S., Shinohara, M., Nishida, K. et al. Retrieval and precise phase-velocity estimation of Rayleigh waves by the spatial autocorrelation method between distributed acoustic sensing and seismometer data. Geophys J Int 237, 1174–1188 (2024).
Fukushima, S., Shinohara, M., Yamada, T. et al. Enhanced P-wave velocity imaging by marine airgun-source seismic surveys with distributed acoustic sensing. Sci Rep 15, 18111 (2025).
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Self Introduction

I was born and raised in Edogawa, Tokyo. I have loved fish since childhood and often went fishing. I moved to Hokkaido for university and spent six years in Sapporo, from my undergraduate years until entering the master's program. After that, I continued my research life in Tokyo and Sendai, and returned to Hokkaido after four years. The ocean, which I have been familiar with since childhood, is now my field of earthquake research.

Academic background2014　Graduated from Tokyo Metropolitan Komaba High School
2019　B.Sc., Department of Earth and Planetary Sciences, Faculty of Science, Hokkaido University
2021　M.Sc., Department of Natural History Sciences, Graduate School of Science, Hokkaido University
2024　Ph.D. (Science), Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo
2024　Postdoctoral Researcher, Research Center for Prediction of Earthquakes and Volcanic Eruptions, Graduate School of Science, Tohoku University
2025　Assistant Professor, Institute of Seismology and Volcanology, Faculty of Science, Hokkaido University (present position)
Affiliated academic societyThe Seismological Society of Japan, Japan Geoscience Union
Room addressFaculty of Science Building 4 4-201
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