DI001
Advances in Deep Mantle Structure and Dynamics from Computational, Experimental, and Observational Perspectives
Session ID#: 251915
Session Description:
Mantle convection drives the formation of plumes that advect mass and heat from the deep mantle toward the lithosphere. Simultaneously, subducting slabs facilitate volatile recycling, which, in tandem with volcanism, helps maintain a stable and clement atmosphere. While this overall picture appears to be clear, mantle dynamics involves processes and structures that remain poorly understood. These complexities include the influence of density and viscosity variations on the trajectory of plumes and slabs, the related dispersal of subducted materials in the mantle, the origin and evolution of deep thermo-chemical structures (e.g., LLSVPs, ULVZs) and their interactions with core and subducted slabs. Their investigations demand integration of constraints from traditional disciplines and innovative approaches like machine learning and integrated geodynamic simulations. This session invites contributions from geodynamics, mineral physics, seismology, global tectonics, igneous petrology, and geochemistry to explore the nature of mantle dynamics and heterogeneities and their surface geological expressions.
Co-Sponsor(s):
Index Terms:
0545 Modeling [COMPUTATIONAL GEOPHYSICS]
1025 Composition of the mantle [GEOCHEMISTRY]
1038 Mantle processes [GEOCHEMISTRY]
7270 Tomography [SEISMOLOGY]
Primary Convener: Qian Yuan, California Institute of Technology, Division of Geological and Planetary Sciences, Pasadena, United States
Conveners: Scott Burdick, Wayne State Univeresity, Detroit, United States, Cijin Zhou, University of Science and Technology of China, Hefei, China and Andrea Giuliani, ETH Zürich, Zurich, Switzerland
Student/Early Career Convener: Mo Hu, California Institute of Technology, Pasadena, CA, United States
Equilibrium Isotope Fractionation of Silicon among Minerals in Mantle Transition Zone by Force Constants Approach and First Principles Calculations (1864552)
Bin Zhao, University of Hawaii at Manoa, Honolulu, HI, United States, Dongzhou Zhang, The University of Chicago, Center for Advanced Radiation Sources, Chicago, United States and Bin Chen, University of Hawaii at Manoa, Honolulu, United States
Linking Ocean Island Basalt Geochemistry with Mantle Plume Dynamics (1870938)
Shihao Jiang1, Thomas Duvernay1, Mark J. Hoggard2, Rhys Hawkins2, Ian H Campbell1 and Rhodri Davies1, (1)Australian National University, Research School of Earth Sciences, Canberra, ACT, Australia, (2)Australian National University, Research School of Earth Sciences, Acton, ACT, Australia
Physics-based machine learning for mantle convection simulations (Invited) (1878565)
Siddhant Agarwal1,2, Ali Can Bekar2, Christian Hüttig1, David Greenberg2 and Nicola Tosi1, (1)German Aerospace Center DLR Berlin, Planetary Physics, Berlin, Germany, (2)Helmholtz-Zentrum Geesthacht Centre for Materials and Coastal Research, Model-driven Machine Learning, Geesthacht, Germany
Africa’s Whole Mantle Discontinuity Structure: Oceans, Cratons, and Rifts (1879340)
Jean-Joel Legre, University of Rochester, Department of Earth and Environmental Sciences, Rochester, NY, United States and Tolulope M. Olugboji, University of Rochester, Department of Earth and Environmental Sciences, Rochester, United States
Constraints on LLSVP Properties from Boundary Morphology and Seismic Anisotropy (1883002)
Mo Hu, California Institute of Technology, Pasadena, CA, United States, Michael Gurnis, California Institute of Technology, Seismological Laboratory, Pasadena, CA, United States and Jennifer M Jackson, California Institute of Technology, Seismological Laboratory, Pasadena, United States
Global S-Wave Amplitude Analysis of Mantle Attenuation Structure Reveals a Thin Low-Velocity Layer Above the Core-Mantle Boundary (1884670)
Emmanuel Paul Irumhe1, Shuyang Sun1, Min Zhu1,2 and Ying Zhou1, (1)Department of Geosciences, Virginia Tech, Blacksburg, United States, (2)Institute of Geophysics, China Earthquake Administration, Beijing, China
Improving the Radial Structure of Seismic Attenuation using Major-Arc S-wave Amplitudes (1889548)
Min Zhu1,2, Shuyang Sun2, Emmanuel Paul Irumhe2 and Ying Zhou2, (1)Institute of Geophysics, China Earthquake Administration, Beijing, China, (2)Department of Geosciences, Virginia Tech, Blacksburg, United States
Evidence for Weak Seismic Attenuation in Mars' Deep Mantle (1890174)
Thomas Ferrand, Freie Universität Berlin, Berlin, Germany, Jiaqi Li, Peking University, School of Earth and Space Sciences, Beijing, China, Junlin Hua, Brown University, Department of Earth, Environmental, and Planetary Sciences, Providence, United States, Henri Samuel, Université Paris Cité, Institut de Physique du Globe de Paris, CNRS, Paris, France and Laetitia Allibert, Museum für Naturkunde, Berlin, Germany
3D Geodynamic Modeling of Plume-Ridge Interaction with Non-Newtonian Rheology (1900054)
Panupong Kongpet1, Garrett Ito1, Emilie E E Hooft, PhD2, Yang Shen3, Douglas R Toomey2, Kaisa Autumn2, Rebeckah S Hufstetler2, Oluwatofunmi Adeboye1 and Mario Calixto Ruiz4, (1)University of Hawaii, Department of Earth Sciences, Honolulu, United States, (2)University of Oregon, Department of Earth Sciences, Eugene, United States, (3)University of Rhode Island, Graduate School of Oceanography, Narragansett, United States, (4)Instituto Geofísico, Escuela Politécnica Nacional, Quito, Ecuador
Crust in the way: how the crust skews measurements of the deep Earth (1902208)
Shubham Agrawal, University of South Carolina Columbia, Columbia, United States, Daniel Andrew Frost, University of South Carolina, School of Earth, Ocean, and Environment, Columbia, United States and H. Philip Crotwell, University of South Carolina, School of Earth, Ocean and Environment, Columbia, United States
Seismic imaging reveals asymmetric plume dynamics at the Pacific Large Low-Velocity Province southeastern margin (1915763)
Wang Huacong, Institute of Geology and Geophysics Chinese Academy of Sciences, Beijing, CHINA, Yumei He, Inst. of Geology & Geophysics, Beijing, China and Mingming Li, Arizona State University, School of Earth and Space Exploration, Tempe, United States
Seismic imaging of a basaltic Lesser Antilles slab from ancient tectonics (1921728)
Xusong Yang, University of Miami, Rosenstiel School of Marine, Atmospheric, and Earth Science, Miami, FL, United States, Yujiang Xie, Institute for Geophysics, Jackson School of Geosciences, University of Texas at Austin, Austin, TX, USA, Austin, United States, Catherine Rychert, Woods Hole Oceanographic Institution, Ocean and Earth Science, Woods Hole, MA, United States, Nicholas Harmon, Woods Hole Oceanographic Institution, Geology & Geophysics, Woods Hole, United States, Saskia D B Goes, Imperial College London, Department of Earth Science and Engineering, London, United Kingdom, Andreas Rietbrock, Karlsruhe Institute of Technology, Geophysical Institute, Karlsruhe, Germany, Lloyd Lynch, University of the West Indies, Seismic research Centre, St. Augustine, Trinidad and Tobago and VoiLA Working Group
How Dense is Too Dense? A Cooling Earth Affects the Absolute Effective Density Contrast of Large Low-Velocity Province Structures (1926734)
Heidi Krauss, Michigan State University, Department of Earth and Environmental Science, East Lansing, MI, United States and Allen K McNamara, Michigan State University, Earth and Environmental Sciences, East Lansing, MI, United States
Hydrogen Isotopic Fractionation upon Dehydration of SiO2 in the Lower Mantle: Origin of Water in Plumes with Low D/H Ratios (1932473)
Megumi Semba1, Naoya Sakamoto2, Kei Hirose1,3, Shuhei Mita1, Naoki Kurita1 and Hisayoshi Yurimoto2,4, (1)The University of Tokyo, Department of Earth and Planetary Science, Bunkyo-ku, Tokyo, Japan, (2)Hokkaido University, Institute for Integrated Innovations, Sapporo, Hokkaido, Japan, (3)Institute of Science Tokyo, Earth-Life Science Institute, Meguro-ku, Tokyo, Japan, (4)Hokkaido University, Department of Natural History Sciences, Sapporo, Hokkaido, Japan
Performance Boosting of FEniCS Geodynamic Simulations with an Integrated GPU Platform (1935839)
Kyeongmin Lee, Kangwon National University, Geophysics, Chuncheon, Korea, Republic of (South), Deok-Kyu Jang, Kangwon National University, Chuncheon, Korea, Republic of (South) and Byung-Dal So, Kangwon National University, Geophysics, Chuncheon, Gangwon-do, South Korea
Assessing the effects of heat-producing element enrichment and mantle thermal conductivity on the stability of primordial reservoirs (1939335)
Joshua Martin Guerrero1, Frederic Deschamps2, Wen-Pin Hsieh1 and Paul Tackley3, (1)Institute of Earth Sciences Academia Sinica, Taipei, Taiwan, (2)Academia Sinica, Institute of Earth Sciences, Taipei, Taiwan, (3)ETH Zürich, Department of Earth Sciences, Zürich, Switzerland
Predicted Sensitivity of Neutrino Oscillation Tomography to hydrogen in the Mantle (1964432)
Yael Armando Deniz Hernandez1, Eric L Mittelstaedt1, João A B Coelho2, Stephanie Durand3, Nobuaki Fuji4, Isabel Goos2, Rebekah Pestes2 and Veronique Van-Elewyck2, (1)University of Idaho, Department of Earth and Spatial Sciences, Moscow, ID, United States, (2)Laboratoire APC, Université Paris Diderot, Paris, France, (3)Univ Lyon, Univ Lyon 1, ENSL, CNRS, LGL-TPE, Villeurbanne Cedex, France, (4)Université de Paris, Institut de physique du globe de Paris, Paris, France
Seismic and Mineralogical Evidence for Iron-Rich Hawai’ian Mega Ultralow-Velocity Zone (Invited) (1967289)
Vedran Lekic, University of Maryland, Department of Geology, College Park, United States, Doyeon Kim, Imperial College London, London, United Kingdom, Jung-Hun Song, Seoul National University, School of Earth and Environmental Sciences, Seoul, Korea, Republic of (South) and Vasilije V Dobrosavljevic, Carnegie Institution for Science, Earth and Planets Laboratory, Washington, United States
Plume Ponding in the Mid-Upper Mantle Beneath the South Pacific Superswell Revealed by X-Discontinuities (1999966)
Jingchuan Wang1, Nicholas C Schmerr2, Vedran Lekic2 and Maxim Ballmer3, (1)University of Maryland College Park, College Park, MD, United States, (2)University of Maryland, Department of Geology, College Park, United States, (3)UCL, Dept. of Earth Sciences, London, United Kingdom
