[E] Oral

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

[S-IT16] Planetary cores: Structure, formation, and evolution

Wed. May 29, 2024 3:30 PM - 5:00 PM 102 (International Conference Hall, Makuhari Messe)

convener:Riko Iizuka-Oku(Department of Earth Sciences, School of Education, Waseda University), Yoichi Nakajima(Department of Physics, Kumamoto University), Ryosuke Sinmyo(Meiji University), Saori Kawaguchi-Imada(Japan Synchrotron Radiation Research Institute), Chairperson:Yoichi Nakajima(Department of Physics, Kumamoto University), Ryosuke Sinmyo(Meiji 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 papers 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.

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3:30 PM - 3:45 PM

[SIT16-06] Experimental study on trapped melt in iron meteorite: Implication for core solidification in planetesimals

*Hidenori Terasaki¹, Shiori Matsubara¹, Takashi Yoshino², Satoru Urakawa¹, Geoffrey Bromiley³, Ian Butler³ (1.Faculty of Science, Okayama University, 2.Institute for planetary Materials, Okayama University, 3.School of Geoscience, The University of Edinburgh)

3:45 PM - 4:00 PM

[SIT16-07] Impact of thermal core-mantle interaction on back reaction of magnetic field on rotating penetrative convection

*TIRTHARAJ BARMAN¹, SWARANDEEP SAHOO¹ (1.Department of Applied Geophysics, Indian Institute of Technology Indian School of Mines Dhanbad, Jharkhand, India)

4:00 PM - 4:15 PM

[SIT16-08] A long-lasting tenuous Ediacaran dynamo: Linkages to inner core nucleation and the evolution of animal life

*John Anthony Tarduno¹, Tinghong Zhou¹, Jack Schneider¹, Wentao Huang², Rory D. Cottrell¹ (1.University of Rochester, 2.TPESER, Chinese Acad. Sci.)

4:15 PM - 4:30 PM

[SIT16-09] Sound velocity measurement for high-pressure phase of iron sulfide compounds at high pressure and high temperature

*Daijo IKUTA¹, Eiji OHTANI², Hiroshi FUKUI^3,4, Tatsuya SAKAMAKI², Daisuke ISHIKAWA^4,3, Alfred Q. R. BARON^4,3 (1.Institute for Planetary Materials, Okayama University, 2. Department of Earth Science, Tohoku University, 3.JASRI, 4.RIKEN)

4:30 PM - 4:45 PM

[SIT16-10] The thermal and compositional patterns of Earth’s inner core inferred from novel seismic measurement techniques

★Invited Papers

*Lauren Waszek¹, Hrvoje Tkalcic², Thuany Costa de Lima², Anatoly Belonoshko³, Jack Muir⁴, Maurizio Mattesini^5,6, Louis Moresi² (1.James Cook University, 2.Australian National University, 3.Royal Institute of Technology, 4.Space Fleet Technologies, 5.Complutense University of Madrid, 6.Facultad de Ciencias Físicas)

Discussion (4:45 PM - 5:00 PM)

Session information