DI42A:
The Earth's Core: Constraints on the Earth’s Metallic Heart from Multidisciplinary Approaches I

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Session ID#: 16748

Session Description:
Understanding the complex nature of the Earth’s core, including stratified layers in the liquid outer core and the structure of the solid inner core, requires combined knowledge of its thermal, compositional, electromagnetic and mineralogical state. These fundamental factors determine the age of the inner core, as well as the history and present operation of the geodynamo.
How are inner core complexities observed seismologically related to the outer core dynamics? Are they imparted to the inner core surface by the dynamics of the liquid and subsequently advected by flow within the core?
Multi-disciplinary collaboration and integration of individual results is crucial to progress in unraveling the intriguing properties of both the inner and outer core. With a multi-disciplinary spirit in mind, this session invites contributions from seismology, mineral physics, geodynamics, geomagnetism, geochemistry, and mathematical geophysics in a joint effort to understand the Earth’s metallic heart.
Primary Convener:  Hrvoje Tkalčić, Australian National University, Research School of Earth Sciences, Canberra, ACT, Australia
Conveners:  Hrvoje Tkalčić, Australian National University, Research School of Earth Sciences, Canberra, ACT, Australia, Jiachao Liu, Michigan State University, Earth and Environmental Sciences, East Lansing, United States and Marine Lasbleis, Tokyo Institute of Technology, Earth Life Science Institute, Tokyo, Japan
Chairs:  Hrvoje Tkalčić, Australian National University, Research School of Earth Sciences, Canberra, ACT, Australia, Jiachao Liu, Michigan State University, Earth and Environmental Sciences, East Lansing, United States, Christopher C Finlay, DTU National Space Institute, København Ø, Denmark and Marine Lasbleis, Tokyo Institute of Technology, Earth Life Science Institute, Tokyo, Japan
OSPA Liaison:  Marine Lasbleis, Tokyo Institute of Technology, Earth Life Science Institute, Tokyo, Japan

Cross-Listed:
  • GP - Geomagnetism, Paleomagnetism and Electromagnetism
  • MR - Mineral and Rock Physics
  • S - Seismology
Index Terms:

1015 Composition of the core [GEOCHEMISTRY]
1507 Core processes [GEOMAGNETISM AND PALEOMAGNETISM]
3924 High-pressure behavior [MINERAL PHYSICS]
7207 Core [SEISMOLOGY]

Abstracts Submitted to this Session:

An Early Geodynamo Driven by Exsolution of Mantle Components from Earth’s Core (Invited) (121189)
James Badro, Université Paris Cité, Institut de Physique du Globe de Paris, CNRS, Paris, France, Julien Siebert, Université de Paris & Institut de Physique du Globe de Paris, Paris, France and Francis Nimmo, University of California, Santa Cruz, Department of Earth and Planetary Sciences, Santa Cruz, United States
Early geodynamo powered by magnesium exsolution? (188210)
Zhixue Du, Geophysical Laboratory of the Carnegie Institution for Science, Washington, United States, Colin Jackson, Geophysical Laboratory of the Carnegie Institution for Science, Washington, DC, United States, Neil Bennett, Carnegie Institution for Science Washington, Washington, DC, United States, Peter E. Driscoll, Carnegie Institution for Science Washington, Washington, United States, Yingwei Fei, Carnegie Science, Earth and Planets Laboratory, Washington DC, United States and Kanani K M Lee, Yale University, Department of Geology & Geophysics, New Haven, United States
Inner Core Imaging Using P’P’ (179047)
Elizabeth A Day1, James A Ward1, Ian D Bastow2 and Jessica C E Irving3, (1)Imperial College London, London, United Kingdom, (2)Imperial College London, Department of Earth Science and Engineering, London, SW7, United Kingdom, (3)University of Bristol, School of Earth Sciences, Bristol, BS8, United Kingdom
Regional Variations of the Inner Core Attenuation Structure (155041)
Jialing Qin and Xinlei Sun, GIG Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, State Key Laboratory of Isotope Geochemistry, Guangzhou, China
Heat Producing Elements and the Energy Budget of Earth's Core (164997)
Chidester Bethany, University of Chicago, Chicago, United States, Zia Rahman, Jacobs/JETS Contract, NASA Johnson Space Center, Mail Code XI2, Houston, TX, United States, Kevin Righter, NASA Johnson Space Center, Astromaterials Acquisition and Curation Office, Houston, United States and Andrew Campbell, University of Chicago, Chicago, IL, United States
Numerical simulation of the geodynamo reaches Earth’s core dynamical regime (Invited) (118801)
Julien Aubert1, Thomas Gastine1 and Alexandre Fournier2, (1)Institut de Physique du Globe de Paris, Paris, France, (2)Université de Paris, Institut de Physique du Globe de Paris, CNRS, Paris, France
The first billion years of the geodynamo and its implications for the early core (175769)
John Anthony Tarduno, University of Rochester, Department of Physics and Astronomy, Rochester, NY, United States, Rory Danielle Cottrell, University of Rochester, Earth and Environmental Sciences, Rochester, NY, United States, Richard K. Bono, University of Liverpool, Liverpool, United Kingdom and Eric R Thern, John De Laeter Centre for Isotope Research, Curtin University, Department of Applied Geology, Perth, Australia
Transport Properties of Earth’s Core (148807)
Ronald E Cohen1,2, Peng Zhang3 and Junqing Xu1, (1)Ludwig Maximilians University of Munich, Department for Earth and Enviromental Sciences, Munich, Germany, (2)Carnegie Institution for Science, Earth and Planets Laboratory, Washington, United States, (3)Xi'an Jiaotong University, Department of Physics, Xian, China

See more of: Study of Earth's Deep Interior