DI33B:
New Insights into the Earth's Core II Posters

Submit an Abstract to this Session



Session ID#: 26108

Session Description:
The history of Earth’s core remains debated and poorly constrained even as new experiments and observations have contributed to our understanding of the thermal state of outer core and the nucleation of the inner core. Scenarios for the operation and history of the dynamo are challenged by evidence of a stable stratified layer at the outer core’s upper boundary, a high value of thermal conductivity, and the presence of an early magnetic field. In the inner core, seismic observations reveal complex lateral and vertical structure at a broad spectrum of spatial scales, with unknown links to the history of its crystallization, melting, and deformation. We hope this session will bring together a wide range of disciplines, including geodynamic modeling, high-pressure experiments, and seismic observations with the aim of a better understanding Earth’s core.
Primary Convener:  Ludovic Huguet, Université Grenoble Alpes, ISTerre, Grenoble, France
Conveners:  Vernon F Cormier, University of Connecticut, Groton, CT, United States and Robert Teed, University of Cambridge, Cambridge, United Kingdom
Chairs:  Ludovic Huguet, Université Grenoble Alpes, ISTerre, Grenoble, France, Vernon F Cormier, University of Connecticut, Groton, CT, United States and Robert Teed, University of Glasgow, Glasgow, G12, United Kingdom
OSPA Liaison:  Vernon F Cormier, University of Connecticut, Groton, CT, United States

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

1507 Core processes [GEOMAGNETISM AND PALEOMAGNETISM]
1510 Dynamo: theories and simulations [GEOMAGNETISM AND PALEOMAGNETISM]
3924 High-pressure behavior [MINERAL PHYSICS]
7207 Core [SEISMOLOGY]

Abstracts Submitted to this Session:

Possible heterogeneity in the Earth’s inner core (Invited) (227214)
Tae-Gyu Yee, Seoul National University, Seoul, Korea, Republic of (South), Junkee Rhie, Seoul National University, School of Earth and Environmental Sciences, Seoul, South Korea and Hrvoje Tkalčić, Australian National University, Research School of Earth Sciences, Canberra, ACT, Australia
Three Types of Earth's Inner Core Boundary (231903)
Dongdong Tian, University of Science and Technology of China, School of Earth and Space Sciences, Hefei, China and Lianxing Wen, Stony Brook University, Stony Brook, NY, United States; University of Science and Technology of China, Hefei, China
Temporal Change of Seismic Earth's Inner Core Phases: Inner Core Differential Rotation Or Temporal Change of Inner Core Surface? (234023)
Jiayuan Yao1, Dongdong Tian2, Li Sun3 and Lianxing Wen2,4, (1)Nanyang Technological University, Division of Mathematical Sciences, School of Physical and Mathematical Sciences, Singapore, Singapore, (2)University of Science and Technology of China, School of Earth and Space Sciences, Hefei, China, (3)China Earthquake Networks Center, Beijing, China, (4)State University of New York at Stony Brook, Department of Geosciences, Stony Brook, NY, United States
Inferences on the Physical Nature of Earth’s Inner Core Boundary Region from Observations of Antipodal PKIKP and PKIIKP Waves (244540)
Vernon F Cormier, University of Connecticut, Groton, CT, United States, Januka Attanayake, University of Münster, Münster, Germany, Christine Thomas, Westfälische Wilhelms-Universität Münster, Institute of Geophysics, Münster, Germany, Keith D. Koper, University of Utah, Department of Geology and Geophysics, Salt Lake City, United States and Meghan Samanth Miller, Australian National University, Research School of Earth Sciences, Canberra, ACT, Australia
Investigating the source of anomalous PKP travel-times on south-Sandwich to Alaska paths (246657)
Daniel Andrew Frost, University of California Berkeley, Berkeley Seismological Laboratory, Berkeley, United States and Barbara A Romanowicz, Berkeley Seismological Laboratory, University of California Berkeley, Berkeley, United States
A two-pronged approach to detecting ICB Stoneley modes (261869)
Hope Abigail Jasperson, Rice University, Earth, Environmental and Planetary Sciences, Houston, TX, United States, Jingchen Ye, Rice University, Applied Physics, Houston, TX, United States, Jia Shi, Shell International Exploration & Production Inc, Houston, TX, United States and Maarten V De Hoop, Rice University, Computational and Applied Mathematics, Houston, TX, United States
Sensitivity of geomagnetic reversal rate on core evolution from numerical dynamos (285572)
Peter E Driscoll, Carnegie Science, Earth & Planets Lab, Washington, United States and Prof. Christopher J Davies, University of Leeds, School of Earth and Environment,, Leeds, United Kingdom
Scaling up Planetary Dynamo Modeling to Massively Parallel Computing Systems: The Rayleigh Code at ALCF (237879)
Jonathan M Aurnou1, Nicholas Andrew Featherstone2, Rakesh Kumar Yadav3, Moritz H Heimpel4, Krista Marie Soderlund5, Hiroaki Matsui6, Sabine Stanley7, Benjamin P. Brown8, Gary Glatzmaier9, Peter Olson10, Bruce A Buffett11, Lorraine Hwang6 and Louise H Kellogg12, (1)University of California Los Angeles, Department of Earth, Planetary, and Space Sciences, Los Angeles, United States, (2)University of Colorado Boulder, Applied Mathematics, Boulder, United States, (3)Harvard-Smithsonian Center for Astrophysics, Cambridge, MA, United States, (4)University of Alberta, Department of Physics, Edmonton, AB, Canada, (5)University of Texas, Institute for Geophysics, Austin, United States, (6)University of California Davis, Davis, CA, United States, (7)Johns Hopkins University, Department of Earth and Planetary Sciences, Baltimore, MD, United States, (8)Laboratory for Atmospheric and Space Physics, Boulder, CO, United States, (9)University of California, Santa Cruz, CA, United States, (10)University of New Mexico, Department of Earth and Planetary Sciences, Albuquerque, United States, (11)University of California Berkeley, Earth and Planetary Science, Berkeley, CA, United States, (12)UC Davis, Department of Earth and Planetary Sciences, Davis, CA, United States
Subcritical thermal convection of liquid metals in a rapidly rotating sphere (208799)
Philippe Cardin1, Nathanaël Schaeffer1, Celine Guervilly2 and Elliot Kaplan3, (1)University Grenoble Alpes, ISTerre, Grenoble, France, (2)University of Newcastle, Newcastle, United Kingdom, (3)University Grenoble Alpes, ISTerre - CNRS/IRD, Grenoble, France
Effect of core electrical conductivity on the modeling of core surface flow in a geostrophic state (248338)
Masaki Matsushima, Tokyo Institute of Technology, Tokyo, Japan
Observation and excitation of magnetohydrodynamic waves in numerical models of Earth's core (256743)
Robert Teed, University of Glasgow, Glasgow, G12, United Kingdom; University of Cambridge, Cambridge, United Kingdom, Kumiko Hori, Kobe University, Kobe, Japan; University of Leeds, Leeds, United Kingdom, Steven Tobias, Mathematics, University of Leeds, Leeds, United Kingdom and Chris A Jones, University of Leeds, School of Mathematics, Leeds, United Kingdom
Influence of precipitating light elements on stable stratification below the core/mantle boundary (287617)
Joseph G O'Rourke, Arizona State University, School of Earth and Space Exploration, Tempe, AZ, United States and David J Stevenson, California Institute of Technology, Pasadena, United States
Dynamo Tests for Stratification Below the Core-Mantle Boundary (Invited) (247565)
Peter Olson, Johns Hopkins University, Department of Earth and Planetary Sciences, Baltimore, MD, United States and Maylis Landeau, University of Cambridge, Department of Applied Mathematics and Theoretical Physics, Cambridge, United Kingdom
Paleomagnetism of Hadean to Neoarchean Detrital Zircons from the Jack Hills, Western Australia (219238)
Caue Borlina1, Benjamin P Weiss2, Eduardo A. Lima2, Roger R Fu3, Elizabeth A Bell4, Ellen Alexander5, Heather Kirkpatrick3, Matthew M. Wielicki6, T. Mark Harrison5, Jahandar Ramezani7, Richard Harrison8 and Joshua Franz Einsle9, (1)Johns Hopkins University, Department of Earth and Planetary Sciences, Baltimore, MD, United States, (2)Massachusetts Institute of Technology, Department of Earth, Atmospheric and Planetary Sciences, Cambridge, MA, United States, (3)Harvard University, Earth and Planetary Sciences, Cambridge, MA, United States, (4)University of California Los Angeles, Earth, Planetary, and Space Sciences, Los Angeles, United States, (5)University of California Los Angeles, Earth, Planetary, and Space Sciences, Los Angeles, CA, United States, (6)University of California Los Angeles, Los Angeles, CA, United States, (7)Massachusetts Institute of Technology, Earth, Atmospheric, and Planetary Sciences, Cambridge, MA, United States, (8)University of Cambridge, Cambridge, United Kingdom, (9)University of Cambridge, Department of Materials Science and Metallurgy, Department of Earth Sciences, Cambridge, United Kingdom
Earth's inner core nucleation paradox (218014)
Ludovic Huguet1, James Van Orman2, Steven A. Hauck II2 and Matthew Willard2, (1)Université Grenoble Alpes, ISTerre, Grenoble, France, (2)Case Western Reserve University, Cleveland, OH, United States
GrowYourIC: an open access Python code to facilitate comparison between kinematic models of inner core evolution and seismic observations (263756)
Elizabeth A Day, Imperial College London, London, United Kingdom, Marine Lasbleis, ELSI, Tokyo, Japan and Lauren Waszek, New Mexico State University, Las Cruces, United States
Shear softening of Earth’s inner core indicated by its high Poisson’s ratio and elastic anisotropy (240319)
Zhongqing Wu, University of Science and Technology of China, Laboratory of Seismology and Physics of Earth’s Interior, School of Earth and Space Sciences, Hefei, China and Wenzhong Wang, University of Science and Technology of China, School of Earth and Space Sciences, Hefei, China
What Would It Take for an Atmospheric Neutrino Detector to Constrain the Hydrogen Content of the Earth's Core ? (231578)
Simon Bourret1, João A B Coelho1, Edouard Kaminski2 and Veronique Van Elewyck1, (1)Laboratoire APC, Université Paris Diderot, Paris, France, (2)Institut de Physique du Globe de Paris, Paris, France
Equations of state and anisotropy of Fe-Ni-Si alloys (291314)
Rachel A Morrison1, Jennifer M Jackson2, Wolfgang Sturhahn3, Dongzhou Zhang2 and Eran Greenberg4, (1)California Institute of Technology, Pasadena, CA, United States, (2)California Institute of Technology, Seismological Laboratory, Pasadena, CA, United States, (3)California Institute of Technology, Seismological Laboratory, Pasadena, United States, (4)University of Chicago, Center for Advanced Radiation Sources, Lemont, IL, United States
Electrical and thermal conductivity of Fe-C alloy at high pressure: implications for effects of carbon on the geodynamo of the Earth’s core (223828)
Chengwei Zhang1, Jung-Fu Lin2, Ying Liu3, Shaomin Feng4, Changqing Jin4 and Takashi Yoshino5, (1)Center for High Pressure Science and Technology Advanced Research, Shanghai, China, (2)University of Texas at Austin, Austin, TX, United States, (3)Peking University, College of Environmental Sciences and Engineering, Beijing, China, (4)Chinese Academy of Science, Institute of Physics, Beijing, China, (5)Okayama University, Institute for Planetary Materials, Tottori, Japan

See more of: Study of Earth's Deep Interior