Solid Earth Sciences (S) | ||
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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 |
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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. |
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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 |
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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 |
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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 |