DI004
Coupling the deep mantle and core: reconciliation of observations, experiments and numerical modeling
Session ID#: 78083
Session Description:
Advances in observational, numerical and experimental techniques have led to an improved understanding of deep Earth dynamics. However, a complete description still evades current scientific apprehension with many crucial details remaining unclear. Open questions within this field include: What is the origin and composition of heterogeneities throughout the mantle, outer core and inner core? What impact do these heterogeneities have on our understanding of mantle and core dynamics? How does this correlate with the observed geomagnetic field evolution? Theoretical and numerical models provide important approaches for parallel research, which offer effective means to synthesize satellite, seismic, geochemical and paleomagnetic data, producing a more complete understanding of deep Earth dynamics. This session welcomes contributions on high-resolution geochemical/geophysical observations, geo/paleomagnetic measurements and laboratory experiments as well as numerical simulations and theory that provide insight into the dynamical coupling between the deep mantle and core.
Index Terms:
1038 Mantle processes [GEOCHEMISTRY]
1507 Core processes [GEOMAGNETISM AND PALEOMAGNETISM]
3909 Elasticity and anelasticity [MINERAL PHYSICS]
7207 Core [SEISMOLOGY]
Primary Convener: Zhou Zhang, University of California San Diego, La Jolla, CA, United States
Conveners: Mingming Li, Arizona State University, School of Earth and Space Exploration, Tempe, AZ, United States, Colin Michael Hardy, Leeds university, Earth Sciences, Leeds, United Kingdom and Paula Koelemeijer, University College London, Department of Earth Sciences, London, United Kingdom
Primary Liaison: Zhou Zhang, University of California San Diego, La Jolla, CA, United States
Stratification and thermal anomalies in Earth's core due to heat flow variations at the core-mantle boundary (Invited) (487964)
Christopher J Davies1, Jonathan E Mound1, Sebastian Rost2 and Jonathan M Aurnou3, (1)Earth and Environment, University of Leeds, Leeds, United Kingdom, (2)The University of Leeds, Leeds, United Kingdom, (3)University of California Los Angeles, Earth, Planetary, and Space Sciences, Los Angeles, CA, United States
Coupled Precipitation of Light Elements from the Core into the Mantle: Importance for Powering Earth's Dynamo (513473)
Sarah M Arveson, Yale University, Department of Geology & Geophysics, New Haven, CT, United States, Tushar Mittal, University of California Berkeley, Earth and Planetary Science, Berkeley, CA, United States, Nicholas R Knezek, University of California, CA, United States, Chris P McGuire, University of Edinburgh, School of GeoSciences, Edinburgh, EH9, United Kingdom, Curtis D Williams, University of California Davis, Department of Earth and Planetary Sciences, Davis, CA, United States, Timothy D Jones, Carnegie Institution for Science Washington, Washington, United States and Jie Li, University of Michigan Ann Arbor, Department of Earth and Environmental Sciences, Ann Arbor, MI, United States
Core Isotopes Without Core Siderophiles (535759)
John W Hernlund, Earth-Life Science Institute, Meguro, Tokyo, Japan, Kang Wei Lim, Tokyo Institute of Technology, Earth-Life Science Institute, Meguro, Japan, Irene Bonati, Tokyo Institute of Technology, Rome, Italy, Scott David Hull, Ohio State University Main Campus, Columbus, OH, United States and Kei Hirose, Tokyo Inst Tech, Tokyo, Japan
An Indian Ocean cluster of mantle plumes imaged by multifrequency P-wave tomography (Invited) (549449)
Maria Tsekhmistrenko1, Karin Sigloch2, Kasra Hosseini2 and Guilhem Barruol3, (1)University of Oxford, Oxford, United Kingdom, (2)University of Oxford, Department of Earth Sciences, Oxford, United Kingdom, (3)Institut de Physique du Globe de Paris, Sorbonne Paris Cité, CNRS (UMR 7154), 1 rue Jussieu, 75238 Paris Cedex 05, France, Paris, France
Reactive Freezing of the Basal Magma Ocean on Earth and other Terrestrial Planets (578063)
Maxim Ballmer, University College London, Dept. Earth Sciences, London, United Kingdom; ETH Zurich, Inst. Geophysics, Zurich, Switzerland, Robert Spaargaren, ETH Zurich, Zurich, Switzerland, Daniela P. Bolrão, ETH Zürich, Department of Earth Sciences, Zürich, Switzerland, Adrien Morison, Ecole Normale Supérieure Lyon, Laboratoire de geologie de Lyon, Lyon, France and Miki Nakajima, University of Rochester, Department of Earth and Environmental Sciences, Rochester, NY, United States
