Solid Earth Sciences (S)
Session Sub-category Science of the Earth's Interior & Tectonophysics(IT)
Session ID S-IT16
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 Japan Synchrotron Radiation Research Institute
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 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.
Presentation Format Oral and Poster presentation
Joint Session with AGU
Invited Authors Lauren Waszek (James Cook University)
Anne Pommier (Carnegie Institution for Science, Earth and Planets Lab)
Time Presentation No Title Presenter
Oral Presentation May 29 PM1
13:45 - 14:00 SIT16-01 Helium in the Earth’s core William F McDonough
14:00 - 14:15 SIT16-02 Compositions of the small core and the basal molten layer of Mars Eiji Ohtani
14:15 - 14:30 SIT16-03 High-Pressure Experiments on Fe3S2 and Fe2S and the Phase Diagram of the Fe-FeS System under Martian Core Conditions Fumiya Sakai
14:30 - 14:45 SIT16-04 Stability and elastic property of C37-type Ni2Si under high-pressure Yoichi Nakajima
14:45 - 15:00 SIT16-05 Investigation of Mercury's Core using Electrical Laboratory Experiments and Parameterized Modeling Anne Pommier
Oral Presentation May 29 PM2
15:30 - 15:45 SIT16-06 Experimental study on trapped melt in iron meteorite: Implication for core solidification in planetesimals Hidenori Terasaki
15:45 - 16:00 SIT16-07 Impact of thermal core-mantle interaction on back reaction of magnetic field on rotating penetrative convection TIRTHARAJ BARMAN
16:00 - 16:15 SIT16-08 A long-lasting tenuous Ediacaran dynamo: Linkages to inner core nucleation and the evolution of animal life John Anthony Tarduno
16:15 - 16:30 SIT16-09 Sound velocity measurement for high-pressure phase of iron sulfide compounds at high pressure and high temperature Daijo IKUTA
16:30 - 16:45 SIT16-10 The thermal and compositional patterns of Earth’s inner core inferred from novel seismic measurement techniques Lauren Waszek
Presentation No Title Presenter
Poster Presentation May 29 PM3
SIT16-P01 Why do plates have striped patterns of geomagnetic reversals, and why do these geomagnetic reversals occur alternately?Why do only ocean floor plates move? Akira Taneko
SIT16-P02 Why is the Van Allen belt eccentric? This is because "a mantle fragment collided with the Earth, causing the outer core to become eccentric by about 500 km." Akira Taneko
SIT16-P03 Effects of Si and O in the metal on the S partitioning between liquid metal and molten silicate at high pressure and temperature based on ab initio calculations KEI ITOH
SIT16-P04 Chemical constraints on the origin of tungsten isotopic anomalies in ocean island basalts Fumika Miyajima
SIT16-P05 Preliminary Core-Mantle Boundary Heat Flux map implied by deep seismic structures Takumi Matsunaga
SIT16-P06 Deep Learning Interatomic Potentials Developed for Understanding Deep Planetary Interiors Yu Komatsu