Solid Earth Sciences (S)
Session Sub-category Science of the Earth's Interior & Tectonophysics(IT)
Session ID S-IT18
Title Planetary cores: Structure, formation, and evolution
Short Title Planetary cores
Main Convener Name Riko Iizuka-Oku
Affiliation Department of Earth Sciences, School of Education, Waseda University
Co-Convener 1 Name Yoichi Nakajima
Affiliation Department of Physics, Kumamoto University
Co-Convener 2 Name Ryosuke Sinmyo
Affiliation Meiji University
Co-Convener 3 Name Saori Kawaguchi-Imada
Affiliation DECTRIS Japan K.K./ Shimane University
Session Language
E
Scope
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.
Presentation Format Oral and Poster presentation
Joint Session with AGU
Invited Authors Hrvoje Tkalčić (Australian National University)
Shunpei Yokoo (The University of Tokyo)
Time Presentation No Title Presenter
Oral Presentation May 30 PM1
13:50 - 14:15 SIT18-01 Planetary cores seen by the coda correlation wavefield Hrvoje Tkalčić
14:15 - 14:30 SIT18-02 Density of iron-rich peridotitic melt: Implication for dense silicate melt layer above Mars' core Yoshio Kono
14:30 - 14:45 SIT18-03 Melting curve of FeS at Martian core condition Hidenori Terasaki
14:45 - 15:00 SIT18-04 The effects of O and Si incorporation to liquid iron on the high-P,T metal silicate partition of S obtained based on first-principles calculations KEI ITOH
15:00 - 15:15 SIT18-05 Core-mantle partitioning and the bulk Earth abundances of hydrogen and carbon: Implications for their origins and delivery timing Kei Hirose
Oral Presentation May 30 PM2
15:30 - 15:45 SIT18-06 Inferring 1-D P-wave velocity structure of the lowermost outer core beneath the northeastern Pacific using waveform inversion Toru Obayashi
15:45 - 16:10 SIT18-07 Density of liquid FeO and thermodynamic modeling of Fe-FeO melting phase relations at high pressure Shunpei Yokoo
16:10 - 16:25 SIT18-08 High temperature and pressure sound velocity measurements for iron-nickel alloys and metals Daijo IKUTA
16:25 - 16:40 SIT18-09 Dynamics of the inner core derived from the sound velocity of iron-light element compounds at high pressure and temperature Eiji Ohtani
16:40 - 16:55 SIT18-10 Investigating the Superionic Inner Core Through In-situ High-temperature Compression Experiments On Iron Hydride Yusuke Okazaki
Presentation No Title Presenter
Poster Presentation May 30 PM3
SIT18-P01 Relationship between the oxidation state of FeS and its reactivity with hydrogen under high pressure and high temperature conditions Takano Masahiro
SIT18-P02 Estimation of the Earth's outer core composition based on the elastic properties of liquid Fe-Ni-O-S quaternary alloys Taku Tsuchiya
SIT18-P03 Hydrogen position and hydrogen-induced volume expansion of hcp deuterated iron -Insight into hydrogen content of the inner core- Sho Kakizawa
SIT18-P04 New high-pressure phase of Ni2P Yoichi Nakajima
SIT18-P05 Back-Reaction of Uniform Magnetic Field on Earth’s Core Convection under High Thermal Forcing Riya Singh Rathore