Solid Earth Sciences(S)
Session Sub-categoryScience of the Earth's Interior & Tectonophysics
Session IDS-IT18
TitlePlanetary cores: Structure, formation, and evolution
Short TitlePlanetary cores
Main ConvenerNameHidenori Terasaki
AffiliationGraduate School of Science, Osaka University
Co-Convener 1NameEiji Ohtani
AffiliationDepartment of Earth and Planetary Materials Science, Graduate School of Science, Tohoku University
Co-Convener 2NameWilliam F McDonough
AffiliationUniversity of Maryland College Park
Co-Convener 3NameGeorge Helffrich
AffiliationEarth-Life Science Institute, Tokyo Institute of Technology
Session LanguageEE
ScopeThere are fundamental links between the formation and evolution of planets and their satellites to that of their cores. Defining the physical and chemical properties of the cores of these terrestrial bodies are fundamental for understanding their internal structures and thermal profile. Recent advances in experimental and theoretical studies provide new insights and applications to the Earth's cores and other terrestrial bodies. Future exploration missions will 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.
Presentation FormatOral and Poster presentation
Joint Session withAGU
Invited Authors
  • Daniele Antonangeli (Sorbonne Universit├ę - CNRS - IMPMC)
  • Jun Kimura (Osaka University)
  • Kenji Ohta (Department of Earth and Planetary Sciences, Tokyo Institute of Technology)
Time Presentation No Title Presenter Abstract
Oral Presentation May 21 PM1
13:45 - 14:00 SIT18-01Origin of the core, and species of light elements in the coreShigenori Maruyama Abstract
14:00 - 14:15 SIT18-02Compressional velocity of hcp Fe-Si alloy by inelastic X-ray scattering and composition of the inner coreEiji Ohtani Abstract
14:15 - 14:30 SIT18-03Si diffusion in ╬│-iron at high pressureNoriyoshi Tsujino Abstract
14:30 - 14:45 SIT18-04Elastic wave velocity of Fe-Si alloy at high pressureTatsuya Sakamaki Abstract
14:45 - 15:00 SIT18-05The Fe-Fe2P and Ni-Ni2P phase diagrams at 6 GPaKonstantin Litasov Abstract
15:00 - 15:15 SIT18-06Effect of pressure and sulfur content on sound velocity in liquid Fe-S to 20 GPaKeisuke Nishida Abstract
Oral Presentation May 21 PM2
15:30 - 15:55 SIT18-07Mineral-physics constraints on planetary cores: the Fe-FeS and the Fe-FeSi systemsDaniele Antonangeli Abstract
15:55 - 16:20 SIT18-08Metallic core and interior evolution of icy bodiesJun Kimura Abstract
16:20 - 16:45 SIT18-09Experimentally inferred thermal conductivity of planetary coresKenji Ohta Abstract
16:45 - 17:00 SIT18-10Thorium and uranium power plate tectonics, but not the geodynamoWilliam F McDonough Abstract
Presentation No Title Presenter Abstract
Poster Presentation May 21 Core Time
SIT18-P01 Sound velocity of liquid Fe-Ni-S-Si at Mercury outer core condition Yamada Iori Abstract
SIT18-P02 Core composition of Mercury estimated from elastic properties of liquid Fe-Ni-alloy Hidenori Terasaki Abstract
SIT18-P03 Mercury's core detected by MESSENGER's vector magnetic data Hiroaki TOH Abstract
SIT18-P04 Effect of silicon on initial friction of iron Chao Liu Abstract
SIT18-P05 Stratification of the Earth's core by SiO2 crystallization George Helffrich Abstract
SIT18-P06 Study of differentiation process between metal and silicate induced from shock impact events Tatsuhiro Sakaiya Abstract