JpGU-AGU Joint Meeting 2026

Session information

[E] Oral

S (Solid Earth Sciences ) » S-IT Science of the Earth's Interior & Tectonophysics

[S-IT21] Planetary cores: Structure, formation, and evolution

Tue. May 26, 2026 10:45 AM - 12:15 PM Exhibition Hall Special Setting (8) (Exhibition Hall 7&8, Makuhari Messe)

Chairperson:Iizuka-Oku Riko(Department of Earth Sciences, School of Education, Waseda University), Kawaguchi-Imada Saori(Shimane University)

There are fundamental links between the formation and evolution of planets and their satellites to that of their cores, both in terms of magnetic field generation and chemical and physical structures. Defining properties of cores and core materials are therefore important for understanding their internal structures, evolution, and thermal profile. Recent advances in experimental and theoretical studies provide new insights into the Earth's cores and the cores of other terrestrial bodies. We seek to understand the nature and role of light elements in the early history of planets and better define their current state. Recent, on-going and future space missions have and will continue to obtain data on the internal structure of terrestrial planets (e.g., Mars and Mercury) and planet-satellite systems. We welcome presentations on recent advances on the physical and chemical properties of cores and discussions regarding the latest views of their formation and evolution. We welcome contributions from mineral/rock physics, geophysics, geochemistry, geodynamics, and planetary science. We also welcome presentations stimulating an interdisciplinary collaboration relating to establishment of the Study of Earth Deep Interior (SEDI)-Japan community. The Commission of Physics of Minerals of the International Mineralogical Association (CPM-IMA) sponsors this session.

11:30 AM - 11:45 AM

*Takano Masahiro1, Hiroyuki Kagi1, Yuichiro Mori2,1, Hiroki Kobayashi1, Katsutoshi Aoki1, Yoshio Takahashi1, Yuta Ijichi3, Sho Kakizawa4, Noriyoshi Tsujino4, Yuji Higo4, Asami Sano-Furukawa5, Taku Tsuchiya6 (1. Graduate School of Science, University of Tokyo, 2. The Department of Earth & Planetary Sciences, Yale University, 3. Japan Agency for Marine-Earth Science and Technology, 4. Japan Synchrotron Radiation Research Institute, 5. J-PARC Center, Japan Atomic Energy Agency, 6. Geodynamics Research Center, Ehime University)

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