V41B:
Thermochemical and Transport Properties of Liquid Metal Alloys in the Earth's Core Posters

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Session ID#: 13621

Session Description:
Core liquids are alloys dominantly of iron and nickel containing a mixture of ~10% of low atomic number elements that probably include H, C, N, O, S and Si.  The thermochemical and transport properties of these alloys governed core formation and the present seismic structure of the outer core.  The objective of this session is to bring together colleagues working on experimental, computational and observational approaches to the properties of the core in order to establish which properties are well constrained, and to outline approaches capable of advancing knowledge of the core’s evolution and its present thermochemical state.  We welcome computational and seismological contributions to the session and particularly look for experimental contributions which have the potential to provide tests and constraints on computational estimates of thermochemical and transport properties.
Primary Convener:  George R Helffrich, Tokyo Institute of Technology, Earth-Life Science Institute, Tokyo, Japan
Convener:  Bernard J Wood, University of Oxford, Department of Earth Sciences, Oxford, United Kingdom
Chairs:  George R Helffrich, Tokyo Institute of Technology, Earth-Life Science Institute, Tokyo, Japan and Bernard J Wood, University of Oxford, Department of Earth Sciences, Oxford, United Kingdom
OSPA Liaison:  George R Helffrich, Tokyo Institute of Technology, Earth-Life Science Institute, Tokyo, Japan

Cross-Listed:
  • DI - Study of the Earth's Deep Interior
  • MR - Mineral and Rock Physics
  • S - Seismology
Index Terms:

1015 Composition of the core [GEOCHEMISTRY]
3672 Planetary mineralogy and petrology [MINERALOGY AND PETROLOGY]
3919 Equations of state [MINERAL PHYSICS]
7207 Core [SEISMOLOGY]

Abstracts Submitted to this Session:

Experimental investigation on the thermodynamic properties of liquid Fe-light element alloys and the solidification of molten metallic cores (Invited) (117643)
Zhicheng Jing1, Julien Chantel2, Man Xu2, Jian Han2, Tony Yu3 and Yanbin Wang4, (1)Case Western Reserve University, Cleveland, United States, (2)Case Western Reserve University, Cleveland, OH, United States, (3)The University of Chicago, Center for Advanced Radiation Sources, Chicago, United States, (4)University of Chicago, Center for Advanced Radiation Sources, Chicago, IL, United States
Composition and Layering in Earth's Outer Core (Invited) (121184)
James Badro, Université Paris Cité, Institut de Physique du Globe de Paris, CNRS, Paris, France and John Peter Brodholt, University of Oslo, Centre of Earth Evolution and Dynamics, Oslo, Norway
Thermoelasticity of Fe-light Element Alloys by Ab Initio Molecular Dynamics Simulations to Model the Outer Core Composition (130096)
Taku Tsuchiya1, Hiroki Ichikawa1 and Ohmura Satoshi2, (1)Ehime University, Geodynamics Research Center, Matsuyama, Japan, (2)Ehime University, Matsuyama, Japan
Seismological evidence for heterogeneous lowermost outer core of the Earth from PKiKP–PKPbc differential traveltime and dispersion in PKPbc (154466)
Toshiki Ohtaki1, Satoshi Kaneshima2, Hiroki Ichikawa3 and Taku Tsuchiya3, (1)Geological Survey of Japan, AIST, Tsukuba, Japan, (2)Kyushu University, Fukuoka, Japan, (3)Ehime University, Geodynamics Research Center, Matsuyama, Japan
Outer core stratification by crystallization of SiO2 (154501)
George R Helffrich1, Kei Hirose1, Guillaume Morard2 and Ryosuke Sinmyo1, (1)Tokyo Institute of Technology, Earth-Life Science Institute, Tokyo, Japan, (2)IMPMC Institut de Minéralogie et de Physique des Milieux Condensés, Paris Cedex 05, France

See more of: Volcanology, Geochemistry and Petrology