DI010
Interdisciplinary Insights into Earth and Planetary Cores
Session ID#: 159115
Session Description:
Earth's core, and cores of other planets, are regions of extreme conditions and complex chemistry and dynamics that affect the entire planet. Our understanding of these deep interior regions are made possible through synergistic geophysical and geochemical insights, and affects our outlook on planet formation, evolution, habitability and more. With current abilities to seismically image different planetary cores, observe core dynamo fields with better spatio-temporal resolution, replicate chemistry at extreme conditions in labs, and simulate their complex conditions and dynamics, we are poised for transformative insights on planetary cores. In this session, we aim to bring together studies from different Earth and space science disciplines and across various planetary bodies with a common goal of better and holistically understanding the complex systems of Earth and planetary cores. To this end, we encourage contributions from disciplines such as seismology, mineral physics, geochemistry, planetary magnetism and dynamics.
Index Terms:
1507 Core processes [GEOMAGNETISM AND PALEOMAGNETISM]
3611 Thermodynamics [MINERALOGY AND PETROLOGY]
5724 Interiors [PLANETARY SCIENCES: FLUID PLANETS]
7207 Core [SEISMOLOGY]
Primary Convener: Regupathi Angappan, Johns Hopkins University, Department of Earth and Planetary Sciences, Baltimore, MD, United States
Conveners: Sara Gutierrez, Case Western Reserve University, Cleveland, OH, United States, Meryem Berrada, University of Western Ontario, Earth Sciences, London, ON, Canada and Jessica C E Irving, University of Bristol, School of Earth Sciences, Bristol, BS8, United Kingdom
Student/Early Career Convener: Sara Gutierrez, Case Western Reserve University, Cleveland, OH, United States
A Basal Mantle Layer at the Top of Mars' Core Inferred from Geodynamically-constrained Inversions of InSight Seismic Data (1045315)
Henri Samuel, Institut de Physique du Globe de Paris, CNRS, Université Paris Cité, Paris, France, Melanie Drilleau, Institut Supérieur de l'Aéronautique et de l'Espace, Toulouse Cedex 04, France, Raphael F. Garcia, Institut Supérieur de l’Aéronautique et de l’Espace SUPAERO, Toulouse, France, Attilio Rivoldini, Royal Observatory of Belgium, Brussels, Belgium, Philippe Henri Lognonné, Université Paris Cité, Institut de physique du globe de Paris, CNRS, Paris, France, Quancheng Huang, University of Maryland, Department of Geology, Golden, United States, Ebru Bozdag, Colorado School of Mines, Golden, CO, United States, James Badro, Institut de Physique du Globe de Paris, Paris, France and W Bruce Banerdt, NASA Jet Propulsion Laboratory, Pasadena, CA, United States
Observability of the Earth’s Core Signals and Geomagnetic Jerks in GRACE-based Gravity Field (1052956)
Hugo Lecomte1, Severine Rosat1, Mioara Mandea2 and Mathieu Dumberry3, (1)Université de Strasbourg, ITES, CNRS UMR7063, Strasbourg, France, (2)CNES French National Center for Space Studies, Paris, France, (3)University of Alberta, Edmonton, AB, Canada
Phase transitions of Fe-9wt%Si at high pressure-temperature conditions (1066221)
Meryem Berrada, University of Western Ontario, Earth Sciences, London, ON, Canada; University of Hawaii at Manoa, Honolulu, United States, Bin Chen, University of Hawaii at Manoa, Honolulu, HI, United States and Jie Li, University of Michigan Ann Arbor, Department of Earth and Environmental Sciences, Ann Arbor, MI, United States
Influence of depth-dependent thermal conductivity on numerical dynamos, and implications for geodynamo evolution (1066312)
Peter E Driscoll, Carnegie Institution for Science Washington, Washington, DC, United States, Cian R Wilson, Lamont -Doherty Earth Observatory, Palisades, United States and Kai Luo, Carnegie Institution for Science, Washington, United States
Multidecadal variation of the inner core rotation (1071000)
Yi Yang, Institute of Theoretical and Applied Geophysics, School of Earth and Space Sciences, Peking University, Beijing, China and Xiaodong Song, SinoProbe Laboratory, School of Earth and Space Sciences, Peking University, Beijing, China
3D transdimensional seismic tomography of the inner core using normal mode and body wave data (1072105)
Henry Brett1, Rhys Hawkins1, Karen Lythgoe2, Lauren Waszek3 and Arwen Fedora Deuss1, (1)Utrecht University, Utrecht, Netherlands, (2)Nanyang Technological University, Singapore, Singapore, (3)James Cook University, Physical Sciences Group, Minneapolis, MN, United States
Can Paleomagnetism Be Used to Distinguish Between Changes in Core Structure and Mantle Convection? (1072431)
Chloe Ritchie1, Daniele Thallner1, Courtney Jean Sprain2, Juliane Dannberg3, Rene Gassmoeller3, Christopher J Davies4, Domenico G Meduri5, Andrew Biggin6, Frederick S Lacombe3, Richard K. Bono7 and Yael Annemiek Engbers6, (1)University of Florida, Department of Geological Sciences, Ft Walton Beach, FL, United States, (2)University of Florida, Geological Sciences, Gainesville, United States, (3)University of Florida, Department of Geological Sciences, Gainesville, United States, (4)University of Leeds, School of Earth and Environment, Leeds, United Kingdom, (5)IRAP, Institut de Recherche en Astrophysique et Planétologie, Toulouse, France, (6)University of Liverpool, Department of Earth, Ocean and Ecological Sciences, Liverpool, United Kingdom, (7)Florida State University, Tallahassee, FL, United States
Complex inner core motion from LASA, ILAR, and YKA recordings (1078424)
John Emilio Vidale1, Wei Wang2, Guanning Pang3 and Keith D. D Koper3, (1)University of Southern California, Los Angeles, CA, United States, (2)University of Southern California, Los Angeles, United States, (3)University of Utah, Salt Lake City, UT, United States
Exploration of velocity structure in the lowermost outer core (F layer) beneath east-central to central Pacific Ocean (1079574)
Toshiki Ohtaki, Geological Survey of Japan, AIST, Tsukuba, Japan, Satoshi Kaneshima, Kyushu University, Fukuoka, Japan and Taku Tsuchiya, Geodynamics Research Center, Matsuyama, Japan
Possible link between deeply subducted water and the Eʹ layer (1097331)
Taehyun Kim1,2, Joseph G O'Rourke1, Jeongmin Lee2, Stella Chariton3, Vitali B Prakapenka4, Rachel Husband5, Nico Giordano5, Hans-Peter Liermann5, Yongjae Lee2 and Sang-Heon Shim6, (1)Arizona State University, School of Earth and Space Exploration, Tempe, AZ, United States, (2)Yonsei University, Department of Earth System Sciences, Seoul, South Korea, (3)University of Chicago, Center for Advanced Radiation Sources, Chicago, United States, (4)The University of Chicago, Center for Advanced Radiation Sources, Chicago, United States, (5)DESY Deutsches Elektronen Synchrotron, Hamburg, Germany, (6)Arizona State University, School of Earth and Space Exploration, Tempe, United States
Topographic Effects in Magnetized and Stratified Fluid Cores (1104245)
Rémy Monville1,2, David Cebron1,2 and Dominique Jault1,2, (1)University Grenoble Alpes, CNRS, Grenoble, France, (2)ISTerre Institute of Earth Sciences, Saint Martin d'Hères, France
Iron snow in planetary cores: insight from laboratory fluid dynamics experiments (1105325)
Michael Le Bars1, Ludovic Huguet2, Quentin Kriaa1 and Benjamin Favier1, (1)CNRS, Aix Marseille Univ, Centrale Marseille, IRPHE UMR 7342, Marseille, France, (2)Laboratoire de Géologie de Lyon, Terre, Planètes, Environnement, Villeurbanne, France
Enhanced mechanical core-mantle coupling induced by a stably stratified layer at the top of the core. (1105456)
Jeremy Rekier1, Bruce A Buffett2, Santiago Andres Triana1 and Veronique M A Dehant3, (1)Royal Observatory of Belgium, Brussels, Belgium, (2)University of California Berkeley, Earth and Planetary Science, Berkeley, CA, United States, (3)Royal Observatory Belgium, Brussels, Belgium
Investigating the homogeneous nucleation of Earth’s solid inner core. (1112217)
Alfred Wilson, University of Leeds, Leeds, LS2, United Kingdom, Andrew M Walker, University of Oxford, Earth Sciences, Oxford, United Kingdom, Dario Alfe, University College London, London, United Kingdom and Christopher J Davies, Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, United States
Thermal Conductivity of FeS at Martian Core Conditions (1117298)
Eric Edmund1, Zachary M Geballe1, Suzy Vitale1, Jung-Fu Lin2, Stella Chariton3, Vitali Prakapenka3 and Alexander F Goncharov1, (1)Carnegie Institution for Science, Earth & Planets Laboratory, Washington, United States, (2)The University of Texas, Austin, Department of Geological Sciences, Jackson School of Geosciences, Austin, TX, United States, (3)University of Chicago, Center for Advanced Radiation Sources, Chicago, United States
Latitudinal Regionalization of Planetary Core Convection (1123570)
Jonathan M Aurnou, University of California Los Angeles, Earth, Planetary, and Space Sciences, Los Angeles, CA, United States and Thomas Gastine, Institut de Physique du Globe de Paris, Paris, France
Excitation of high-latitude MAC waves in Earth’s core (1130042)
Quentin Nicolas, University of California Berkeley, Department of Earth and Planetary Sciences, Berkeley, CA, United States and Bruce A Buffett, University of California Berkeley, Earth and Planetary Science, Berkeley, CA, United States
Understanding the E’ layer at the Topmost Core from Metal-Silicate Melting Experiments (1140643)
Suyu Fu1, Kei Hirose2, Shunpei Yokoo3 and Yutaro Tsutsumi1, (1)The University of Tokyo, Tokyo, Japan, (2)Tokyo Inst Tech, Tokyo, Japan, (3)The University of Tokyo, Department of Earth and Planetary Science, Tokyo, Japan
New Optical System Combining Picosecond Acoustics and Internal Resistive Heating Diamond Anvil Cell (1143559)
Yoshihiro Nagaya, Tokyo Institute of Technology, Tokyo, Japan, Kenji Ohta, Tokyo Institute of Technology, Department of Earth and Planetary Sciences, Tokyo, Japan and Takashi Yagi, AIST - National Institute of Advanced Industrial Science and Technology, Tsukuba, Japan
Dynamo Generation during Core Crystallization in Meteorite Parent Bodies. (1149377)
Kathryn Dodds, University of Cambridge, Cambridge, United Kingdom, James Bryson, University of Oxford, Oxford, United Kingdom, Jerome Neufeld, University of Cambridge, Department of Applied Mathematics and Theoretical Physics, Cambridge, United Kingdom and Richard J Harrison, Univ Cambridge, Cambridge, United Kingdom
Magnetic Raynolds number range to sustain dipolar magnetic field in geodynamo simulations with different inner core sizes (1152350)
Hiroaki Matsui1, Yuki Nishida2, Masaki Matsushima3, Atsushi Kumamoto2 and Yuto Katoh2, (1)University of California Davis, Davis, CA, United States, (2)Tohoku University, Department of Geophysics, Graduate School of Science, Sendai, Japan, (3)Tokyo Tech, Tokyo, Japan
Nitrogen partitioning between solid and liquid Fe-rich metal alloy: Implications for the fate of N during differentiation of iron meteorite parent bodies and inner core crystallization of other rocky Solar System objects (1155902)
Debjeet Pathak, Rice University, Houston, TX, United States and Rajdeep Dasgupta, Rice University, Department of Earth, Environmental, and Planetary Sciences, Houston, TX, United States
Iron-Hydrogen Fluids at Planetary Core Conditions (1179448)
Emma Stoutenburg1, Cara Vennari2,3, Natalia V Solomatova4, Andrew Campbell1 and Razvan Caracas5,6, (1)University of Chicago, Chicago, IL, United States, (2)University of Chicago, Chicago, United States, (3)Lawrence Livermore National Laboratory, Livermore, United States, (4)CNRS, École Normale Supérieure de Lyon, Lyon, France, (5)University of Oslo, Center for the Earth Evolution and Dynamics (CEED), Oslo, Norway, (6)Institut de Physique du Globe de Paris, Paris, France
