GP12A:
PL-O Coupling: Connecting Planetary Lithospheres to Outer Cores

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Session ID#: 15745

Session Description:
Planetary interiors are connected systems. Earth's inner core solidifies under conditions controlled by the outer core and overlying mantle.  Thermal disequilibrium between mantle and core drive deep mantle instabilities, which affect magnetic field generation in the core. Experimental, theoretical and numerical approaches are complementary to understanding the dynamics of deep planetary interiors. Recent advances in these fields are this session’s focus.

Other planets display a variety of internal dynamics.  Lithospheric rheology and tectonics are critical for cooling the deep interior and driving planetary magnetic fields.  Synthesis of observations with theory relating to the coupled behaviors of whole planet systems is an end goal of deep interior geophysics.  Outer cores that maintain magnetic dynamos offer a natural laboratory for such theories.  Naturally we seek contributions that broadly connect the properties and dynamics of different parts of Earth and planetary interiors.

Oral presentations in this session may be 7-minute lightning talks.

Primary Convener:  Jonathan M Aurnou, University of California Los Angeles, Department of Earth, Planetary, and Space Sciences, Los Angeles, United States
Conveners:  Jonathan M Aurnou, University of California Los Angeles, Department of Earth, Planetary, and Space Sciences, Los Angeles, United States, Peter E Driscoll, Carnegie Science, Earth & Planets Lab, Washington, United States and Moritz H Heimpel, University of Alberta, Department of Physics, Edmonton, AB, Canada
Chairs:  Moritz H Heimpel, University of Alberta, Department of Physics, Edmonton, AB, Canada, Peter E Driscoll, Carnegie Science, Earth & Planets Lab, Washington, United States and Jonathan M Aurnou, University of California Los Angeles, Department of Earth, Planetary, and Space Sciences, Los Angeles, United States
OSPA Liaison:  Peter E Driscoll, Carnegie Science, Earth & Planets Lab, Washington, United States

Cross-Listed:
  • DI - Study of the Earth's Deep Interior
  • P - Planetary Sciences
  • T - Tectonophysics
Index Terms:

1510 Dynamo: theories and simulations [GEOMAGNETISM AND PALEOMAGNETISM]
5430 Interiors [PLANETARY SCIENCES: SOLID SURFACE PLANETS]
8120 Dynamics of lithosphere and mantle: general [TECTONOPHYSICS]
8121 Dynamics: convection currents, and mantle plumes [TECTONOPHYSICS]

Abstracts Submitted to this Session:

The signature of inner-core nucleation on the geodynamo (119180)
Julien Aubert, Institut de Physique du Globe de Paris, Paris, France, Maylis Landeau, Johns Hopkins University, Baltimore, United States and Peter Olson, Johns Hopkins University, Department of Earth and Planetary Sciences, Baltimore, MD, United States
Spin Transition in the Lower Mantle: Deep Learning and Pattern Recognition of Superplumes from the Mid-mantle and Mid-mantle Slab Stagnation (131191)
M Hosein Shahnas1, David A Yuen2, Maarten V De Hoop3 and Russell Pysklywec1, (1)University of Toronto, Department of Earth Sciences, Toronto, ON, Canada, (2)University of Minnesota Twin Cities, Earth Sciences, Minneapolis, MN, United States, (3)Purdue University, Department of Mathematics, West Lafayette, IN, United States
Constraining mantle convection models with paleomagnetic reversals record and numerical dynamos  (133843)
Gael Choblet, Nantes Université, Univ Angers, Le Mans Université, CNRS, Laboratoire de Planétologie et Géosciences, LPG UMR 6112, Nantes, France, Hagay Amit, University of Nantes, Laboratory of Planetology and Geosciences, Nantes Cedex 03, France and Laurent Husson, Université Grenoble Alpes, ISTerre, Grenoble, France
Are There Paleomagnetic Signals That Herald the Inner Core? (171069)
Robert S Coe, University of California Santa Cruz, Earth and Planetary Sciences, Santa Cruz, CA, United States
Libration-Driven Elliptical Instability Experiments in Ellipsoidal Shells (142734)
Daphné Lemasquerier, Ecole Normale Supérieure Lyon, Sciences de la Terre, Lyon, France, Alexander M Grannan, University of California Los Angeles, Los Angeles, CA, United States, Benjamin Favier, Aix Marseille Univ, CNRS, Centrale Marseille, IRPHE, Marseille, France, David Cebron, ISTerre Institute of Earth Sciences, Saint Martin d'Hères, France, Michael Le Bars, CNRS, Paris Cedex 16, France and Jonathan M Aurnou, University of California Los Angeles, Department of Earth, Planetary, and Space Sciences, Los Angeles, United States
Realistic force balance in geodynamo simulations (Invited) (118347)
Ulrich R Christensen, Max Planck Institute for Solar System Research, Goettingen, Germany, Rakesh Kumar Yadav, Harvard-Smithsonian Center for Astrophysics, Cambridge, MA, United States and Thomas Gastine, MPS, Katlenburg-Lindau, Germany
Planetary Lithosphere-Outer Core-Inner Core-Mantle Coupled Evolution Over the Entire Age of the Solar System (179352)
Paul J Tackley, ETH Zurich, Department of Earth and Planetary Sciences, Zürich, Switzerland, Takashi Nakagawa, University of Hong Kong, Department of Earth Sciences, Hong Kong, Hong Kong, Diogo José Louro Lourenço, ETH Zurich, Earth and Planetary Sciences, Zurich, Switzerland and Antoine Rozel, ETH Zürich, Department of Earth Sciences, Zürich, Switzerland
Magnetohydrodynamic simulations of a magnetized spherical couette experiment (156615)
Elliot Kaplan, ISTerre Institute of Earth Sciences, Saint Martin d'Hères, France, Dr. Henri-Claude Nataf, ISTerre, Université Grenoble Alpes, CNRS, ISTerre, Grenoble, France and Nathanaël Schaeffer, ISTerre, Université Grenoble Alpes, CNRS, Grenoble, France
Examples of Viscosity-Free Dynamos (147112)
Andy Jackson, ETH Zurich, Zurich, Switzerland, Philip W Livermore, University of Leeds, School of Earth and Environment, Leeds, LS2, United Kingdom and Kuan Li, ETH Swiss Federal Institute of Technology Zurich, Zurich, Switzerland
Elliptical instability in stably stratified fluid interiors (173256)
Jérémie Vidal1, Rainer Hollerbach2, Nathanaël Schaeffer3 and David Cebron1, (1)ISTerre Institute of Earth Sciences, Saint Martin d'Hères, France, (2)University of Leeds, Leeds, United Kingdom, (3)ISTerre, Université Grenoble Alpes, CNRS, Grenoble, France
Full Speed Developments in the Three Meter Laboratory Model of The Earth’s Core (193190)
Daniel Perry Lathrop1, Matthew M Adams2, Douglas Stone2 and Minh Nhat Doan2, (1)University of Maryland College Park, Department of Physics, College Park, MD, United States, (2)University of Maryland College Park, College Park, MD, United States
Onset of plate tectonics and lithosphere-core coupling (Invited) (158789)
David Bercovici, Yale University, Earth & Planetary Sciences, New Haven, CT, United States
Subcritical thermal convection of liquid metals in a rotating sphere using a quasi-geostrophic model (143801)
Philippe Cardin, ISTerre Institut des Sciences de la Terre, UGA - CNRS, Grenoble, France and Celine Guervilly, University of Leeds, Leeds, United Kingdom

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