[P-PS06] Planetary interiors revealed by observations, experiments, and simulations

Sun. May 24, 2026 9:00 AM - 10:30 AM Convention Hall (CH-A) (International Conference Hall, Makuhari Messe)

Chairperson:Hikosaka Koutaro(Institute of Science Tokyo), Sato Masahiko(Tokyo University of Science), Yokoo Shunpei(The University of Tokyo)

Decades of planetary exploration/observation missions have provided data on all planets in our solar system and their various satellites, with the addition of exoplanets in recent years. The data reveal not only the atmospheres and surface environments of these bodies but also contain a substantial amount of information about their interiors. Prime examples concerning planetary interiors are the geodetic data that constrain the density distributions of planets and magnetic field records that indicate the presence of electrically conducting fluids, which are essential elements for building physical and chemical models of the interior of planets. To understand the interior regions that account for most of the mass of planetary bodies, it is essential to combine constraints from these observations with physical properties from mineralogical studies and interior models based on these properties.
This session aims to share current understanding and future developments obtained through multidisciplinary methods by inviting research on the interiors of all types of planets, as well as their satellites. We welcome presentations from various fields including but not limited to: observations, sample analyses, experiments, numerical calculations, and geophysical/geochemical modeling. In addition to planets and satellites of the solar system, we also invite research on exoplanets.

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9:00 AM - 9:15 AM

[PPS06-01] Can global magnetic field be generated through early basal magma oceans?

*Chi Yan¹, Krista Soderlund, Dunyu Liu (1. University of Texas Institute for Geophysics (UTIG))

9:15 AM - 9:30 AM

[PPS06-02] Electrical Conductivity of Pyrolitic Melt at High Pressure and Temperature: Implications for a Silicate Dynamo

*Yoshiyuki Okuda^1,2, Kenji Ohta², Kei Hirose^3,4, Bin Chen¹, Hirokazu Kadobayashi⁵ (1. University of Hawaii at Manoa, 2. Science Tokyo, 3. University of Tokyo, 4. ELSI, 5. JASRI)

9:30 AM - 9:45 AM

[PPS06-03] Powering Ganymede's Dynamo with Protracted Core Formation

*Kevin T Trinh¹, Flavio Petricca², Douglas J Hemingway³, Steven D Vance² (1. California Institute of Technology, 2. Jet Propulsion Laboratory, National Aeronautics and Space Administration, 3. Institute for Geophysics, University of Texas at Austin)

9:45 AM - 10:15 AM

[PPS06-04] Dynamics of Mercury’s core inferred from magnetic field observation and dynamo modeling

★Invited Papers

*Futoshi Takahashi¹ (1. Faculty of Science, Kyushu University)

10:15 AM - 10:30 AM

[PPS06-05] Noachian Martian Dynamo Reconstructed from Crustal Magnetic Anomalies

*Masahiko Sato¹, Masashi Ushioda², Ryoichi Nakada³, Yujiro Tamura⁴, Shinji Yamamoto⁴, Kazuhito Ozawa⁵, Futoshi Takahashi⁶, Ryoya Sakata⁷, Kanako Seki⁷, Chi Yan⁸ (1. Tokyo University of Science, 2. Shikoku Research Institute Inc., 3. Japan Agency for Marine-Earth Science and Technology, 4. Yokohama National University, 5. Hiroshima University, 6. Kyushu University, 7. The University of Tokyo, 8. University of Texas at Austin)