[E] Oral

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

[S-IT31] Planetary cores: Structure, formation, and evolution

convener:Hidenori Terasaki(Faculty of Science, Okayama University), Eiji Ohtani(Department of Earth and Planetary Materials Science, Graduate School of Science, Tohoku University), Gerd Steinle-Neumann(Bayerisches Geoinstitut, Universitaet Bayreuth), William F McDonough(Department of Earth Science and Research Center for Neutrino Science, Tohoku University, Sendai, Miyagi 980-8578, Japan)

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 structure. Defining physical and chemical properties of the cores and core materials of these terrestrial bodies are therefore fundamental for understanding their internal structures and thermal profile. Recent advances in experimental and theoretical studies provide new insights into the Earth's cores and other terrestrial bodies, including the role of light elements in the early history of planets and at current times. Recent, current 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 anticipate 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.

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[SIT31-06] Rising or falling snow: Constraints on core composition from the F-layer

*Irene Bonati¹, Marine Lasbleis², John W Hernlund¹, Kei Hirose¹ (1.Earth-Life Science Institute,Tokyo Institute of Technology, 2.LPG Nantes)

[SIT31-07] Fe alloy snow and fractional solidification at the lowermost outer core

*Youjun Zhang¹, Peter Nelson², Nick Dygert³, Jung-Fu Lin² (1.Sichuan University, China, 2.The University of Texas at Austin, USA, 3.University of Tennessee, USA)

[SIT31-08] Light elements in iron-hydrous silicate system: Searching for core formation process using in-situ high-pressure and high-temperature neutron and X-ray observations

★Invited Papers

*Riko Iizuka-Oku¹, Hirotada Gotou², Chikara Shito¹, Hiroyuki Kagi¹, Akio Suzuki³ (1.Geochemical Research Center, Graduate School of Science, The University of Tokyo, 2.The Institute for Solid State Physics, The University of Tokyo, 3.Department of Earth Science, Graduate School of Science, Tohoku University)

[SIT31-09] Mass Transport and Structural Properties of Liquid Iron Alloys at high pressure from ab-initio simulations

*Gerd Steinle-Neumann¹, Esther S. Posner¹ (1.Bayerisches Geoinstitut, Universitaet Bayreuth)

[SIT31-10] Experimental examination of self-diffusion coefficient of iron under high pressure and its implication to the viscosity of the Earth’s inner core: a preliminary result

*Yohan Park¹, Kenji Ohta¹, Shoichi Itoh², Kei Hirose³ (1.Tokyo institute of technology, 2.Kyoto University, 3.University of Tokyo)

Discussion (12:05 PM - 12:15 PM)