Professor Hisayoshi Shimizu

Ocean Hemisphere Research Center, Earthquake Research Institute, University of Tokyo

Research Topics

Magnetic field of the Earth and planets

Dynamics of deep interior of the Earth and planets

Electrical conductivity structure of the Earth's and planetary interiors

Magnetohydrodynamics of the rotationg system

Recent Publications

Chang, P.Y., Lin, D.J., Shimizu, H., Baba, K., Chang, P.C, Lu, H.J., Chi, P., Yang, Y.H., Chao, C.K., Unearthing the Moon’s deep secrets: multi-site geomagnetic depth sounding evidence for mantle heterogeneity and partial melt. Earth Planets Space 78, 82 , doi:10.1186/s40623-026-02412-z, 2026.

Ogino, K., Harada, Y., Saito, Y., Yokota, S., Nishino, M.N., Takahashi, F., Shimizu, H., Kasahara, Y., Kumamoto, A., Searching for Electron-Only Magnetic Reconnection on Lunar Crustal Magnetic Fields: A Case Study of Kaguya Low-Altitude Observations, Geophys. Res. Lett., 53, e2025GL120358, doi:10.1029/2025GL120358, 2026.

Shimizu, H., Ishihara, Y., Vaiomounga, R., Kula, T., Magnetic field variations in Tongatapu caused by Hunga Tonga–Hunga Ha’apai volcanic activity in January 2022, Earth Planets and Space, 77, 188, doi:10.1186/s40623-025-02315-5, 2025.

Kato, M., Harada, Y., Saito, Y., Yokota, S., Nishino, M.N., Takahashi, F., Shimizu, H., Xu, S., Poppe, A.R., Halekas, J.S., Inhomogeneous Electrostatic Potentials on the Dayside Lunar Surface in the Terrestrial Magnetotail Lobes: The Role of Lunar Crustal Magnetic Fields, Journal of Geophysical Research: Space Physics, 130, e2024JA033545, doi:10.1029/2024ja033545, 2025.

Ogino, K., Harada, Y., Nishino, M.N., Saito, Y., Yokota, S., Kasahara, Y., Kumamoto, A., Takahashi, F., Shimizu, H., Comprehensive characterization of solar wind interaction with lunar crustal magnetic fields: Kaguya low-altitude observations, Earth Planets and Space, 76, 175, doi:10.1186/s40623-024-02123-3, 2024.

Nakagawa, T., Takahashi, F., Saito, Y., Shimizu, H., Sub-ion-gyro scale magnetic field compressions generated by the solar wind interaction with the moon, Earth Planets Space, 75, 60, doi:10.1186/s40623-023-01817-4, 2023.

綱川 秀夫, 高橋 太, 清水 久芳, 渋谷 秀敏, 松島 政貴, 山口 雅央, 池内 悠哉, 月・火星・水星・地球の磁気異常マッピング, 宇宙航空研究開発機構研究開発報告:宇宙科学情報解析論文誌, 第12号, JAXA-RR-22-009, 2023.

Nishino, M.N., Kasahara, Y., Harada, Y., Saito, Y., Tsunakawa, H., Kumamoto, A., Yokota, S., Takahashi, F., Matsushima, M., Shibuya, H., Shimizu, H., Miyashita, Y., Goto, Y., Ono, T., An event study on broadband electric field noises and electron distributions in the lunar wake boundary, Earth Planets Space, 74, 9, doi:10.1186/s40623-021-01566-2, 2022.

Harada, Y., Kasahara, Y., Nishino, M.N., Kurita, S., Saito, Y., Yokota, S., Kumamoto, A., Takahashi, F., Shimizu, H., Global Maps of Solar Wind Electron Modification by Electrostatic Waves Above the Lunar Day Side: Kaguya Observations, Geophys. Res. Lett., 48, e2021GL095260, doi:10.1029/2021GL095260, 2021.

Nakagawa, T., Takahashi, F., Saito, Y., Shimizu, H., Polarization Reversal of Low-Frequency Magnetic Variation in the Lunar Wake, J. Geophys. Res. Space Phys., 126, e2021JA029299, doi:10.1029/2021JA029299, 2021.

Katsura, T., Shimizu, H., Momoki, N., Toh, H., Electromagnetic induction revealed by MESSENGER's vector magnetic data: The size of Mercury's core, Icarus, 354, 114112, doi:10.1016/j.icarus.2020.114112, 2021.

清水久芳,春山純一,月縦孔地下空洞の磁力探査,日本惑星学会誌,29(4),200-207, 2020.

Zorin, N., Alekseev, D., Epishkin, D., Shimizu, H., Yakovlev, H., Zaytsev, S., Validity of the dispersion relations in magnetotellurics. Part II: synthetic and field data, Earth Planets and Space, 72, 139, doi:10.1186/s40623-020-01273-4, 2020.

Minami, T., Nakano, S., Lesur, V., Takahashi, V., Matsushima, M., Shimizu, H., Nakashima, R., Taniguchi, H., Toh, H., A candidate secular variation model for IGRF-13 based on MHD dynamo simulation and 4DEnVar data assimilation, Earth Planets and Space, 72, 136, doi:10.1186/s40623-020-01253-8, 2020.

Yokota, S., Terada, K., Saito, Y., Kato, D., Asamura, K., Nishino, M.N., Shimizu, H., Takahashi, F., Shibuya, H., Matsushima, M., Tsunakawa, H., KAGUYA observation of global emissions of indigenous carbon ions from the Moon, Science Advances, 6, eaba1050, doi:10.1126/sciadv.aba1050, 2020.

Zorin, N., Alexsanova, E., Shimizu, H., Yakovlev, D., Validity of the dispersion relations in magnetotellurics: Part I—theory, Earth Planets and Space, 72, 9, doi:10.1186/s40623-020-1133-4, 2020.

Nishino, M.N., Saito, Y., Tsunakawa, H., Harada, Y., Takahashi, F., Yokota, S. Matsushima, M., Shibuya, H., Shimizu, H., Miyashita, Y., Decrease of the interplanetary magnetic field strength on the lunar dayside and over the polar region, Icarus, 335, 113392, doi:10.1016/j.icarus.2019.113392, 2020.

Takahashi, F., Shimizu, H., Tsunakawa, H., Mercury’s anomalous magnetic field caused by a symmetry-breaking self-regulating dynamo, Nature Communications, 10, 208,doi: 10.1038/s41467-018-08213-7, 2019.

Yukutake, T., Shimizu, H., A generating process of geomagnetic drifting field, Earth Planets Space, 70:145 doi:10.1186/s40623-013-0908-3, 2018.

Yukutake, T., Shimizu, H., On the geomagnetic secular variation in the Pacific region, Phys. Earth Planet. Int., 283, 122-130, 2018.