DI012:
Multi-scale Heterogeneity in Earth’s Deep Interior: Constraints from Imaging, Modeling, and Experiments





Session ID#: 26365

Session Description:
Recent progress in seismology, geodynamics, geochemistry, and mineral physics provides insight into heterogeneity across spatial scales. Imaging techniques now model the full spectrum of seismic data, ranging from broadband seismic waveforms and normal modes, to arrival times of body and surface waves. These advancements provide constraints on parameters like attenuation, anisotropy, and density, illuminating the thermochemical nature of convective features. Regional techniques reveal small-scale features including potential remnants of subducted slabs and ultra-low velocity zones. The emerging consensus on large-scale mantle heterogeneity has led to cross-disciplinary efforts towards developing reference Earth models and data sets. The detected heterogeneity implies variation in intrinsic properties like temperature, composition, grain size, or crystal structure. Disaggregating these effects through observations, experiments, and modeling is vital for explaining the geological origins of seismic heterogeneities and for understanding mantle mixing processes. We invite submissions that explore the nature of heterogeneities at local, regional, and global scales.
Primary Convener:  Pritwiraj Moulik, University of Maryland College Park, Department of Geology, College Park, MD, United States
Conveners:  Gregory J Finkelstein, California Institute of Technology, Pasadena, CA, United States, Neala Creasy, Yale University, Department of Geology and Geophysics, New Haven, CT, United States and Lauren Waszek, New Mexico State University, Main Campus, Las Cruces, NM, United States

Cross-Listed:
  • MR - Mineral and Rock Physics
  • S - Seismology
  • T - Tectonophysics
  • V - Volcanology, Geochemistry and Petrology
Index Terms:

7208 Mantle [SEISMOLOGY]
7270 Tomography [SEISMOLOGY]
8033 Rheology: mantle [STRUCTURAL GEOLOGY]
8124 Earth's interior: composition and state [TECTONOPHYSICS]

Abstracts Submitted to this Session:

Sarah Elizabeth Carson1, Samantha Elizabeth Hansen1 and Edward Garnero2, (1)University of Alabama, Tuscaloosa, AL, United States, (2)Arizona State Univ, Tempe, AZ, United States
Jeroen Ritsema, University of Michigan Ann Arbor, Department of Earth and Environmental Sciences, Ann Arbor, MI, United States, Carlos A. M. Chaves, University of Michigan Ann Arbor, Ann Arbor, MI, United States and Paula Koelemeijer, University of Oxford, Department of Earth Sciences, Oxford, United Kingdom
Marcelo Peres Rocha and Paulo Araujo de Azevedo, UNB University of Brasilia, Asa Norte, Brazil
Richard J Walker, Univ Maryland, College Park, MD, United States
Sang-Heon Dan Shim1, Brent Grocholski2, Yu Ye1,3, Ercan E. Alp4, Yue Meng5, Vitali Prakapenka6, Dane Morgan7 and Shenzhen Xu7, (1)Arizona State University, Tempe, AZ, United States, (2)American Association for the Advancement of Science Arlington, Arlington, VA, United States, (3)China University of Geosciences Wuhan, Wuhan, China, (4)Argonne National Laboratory, Advanced Photon Source, Argonne, IL, United States, (5)Carnegie Institution of Washington, HPCAT, Argonne, IL, United States, (6)The University of Chicago, Argonne, IL, United States, (7)Univ of Wisconsin- Madison, Madison, WI, United States
Josipa Majstorovic1, Severine Rosat1, Sophie Lambotte1 and Yves J G Rogister2, (1)Université de Strasbourg, CNRS, EOST, IPGS UMR 7516, Strasbourg, France, (2)Université de Strasbourg, EOST, Strasbourg, France
Eric Debayle, CNRS, Paris Cedex 16, France, Stephanie Durand, LGLTPE Laboratoire de Géologie de Lyon : Terre, Planètes et Environnement, Villeurbanne Cedex, France; University of Münster, Münster, Germany, Yanick R Ricard, ENS de Lyon, Universite de Lyon, CNRS, Universite Lyon 1, LGL, Lyon, France, Christophe Zaroli, Institut de Physique du Globe Strasbourg, Strasbourg Cedex, France and Sophie Lambotte, Institut de Physique du Globe Strasbourg, CNRS, Strasbourg Cedex, France
Rene Gassmoeller, Colorado State University, Mathematics, Fort Collins, CO, United States, Juliane Dannberg, Colorado State University, Fort Collins, CO, United States, Zach Eilon, University of California Santa Barbara, Earth Science, Santa Barbara, CA, United States, Ulrich Faul, Massachusetts Institute of Technology, Cambridge, MA, United States, Pritwiraj Moulik, University of Maryland College Park, Department of Geology, College Park, MD, United States and Robert Myhill, University of Bristol, School of Earth Sciences, Bristol, United Kingdom
Shucheng Wu, Yingjie Yang and Kai Wang, ARC Centre of Excellence for Core to Crust Fluid Systems and GEMOC, Macquarie University, Sydney, Australia
Baolong Zhang, University of Science and Technology of China, School of Earth and Space Sciences, Hefei, China, Sidao Ni, State Key Laboratory of Geodesy and Earth’s Dynamics, Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan, China, Daoyuan Sun, University of Science and Technology of China, Laboratory of Seismology and Physics of Earth’s Interior & School of Earth and Space Sciences, Hefei, China, Zhichao Shen, California Institute of Technology, Seismological Laboratory, Pasadena, CA, United States, Jennifer M Jackson, California Institute of Technology, Pasadena, CA, United States and Wenbo Wu, Princeton University, Princeton, NJ, United States
Yinzhi Wang, Indiana University Bloomington, Bloomington, IN, United States, Gary L Pavlis, Indiana University Bloomington, Geological Sciences, Bloomington, IN, United States and Mingming Li, Arizona State University, School of Earth and Space Exploration, Tempe, AZ, United States
Ross Maguire, University of Michigan Ann Arbor, Department of Earth and Environmental Sciences, Ann Arbor, MI, United States and Jeroen Ritsema, Univ Michigan, Ann Arbor, MI, United States
Bailey E Hein, University of Oklahoma Norman Campus, Norman, OK, United States and Nori Nakata, Stanford University, Stanford, CA, United States
Youyi Ruan1, Wenjie Lei1, Matthieu Philippe Lefebvre1, Ryan T Modrak1, James A Smith1, Ridvan Orsvuran2, Ebru Bozdag3 and Jeroen Tromp1, (1)Princeton University, Princeton, NJ, United States, (2)University of Nice Sophia Antipolis, Observatoire de la Côte d’Azur, Nice, France, (3)Colorado School of Mines, Golden, CO, United States
Peter Nelson and Steve Grand, University of Texas at Austin, Austin, TX, United States
John W Hernlund, Earth-Life Science Institute, Meguro-ku, Tokyo, Japan and Hiroaki Matsui, University of California Davis, Davis, CA, United States
George R Helffrich, Tokyo Institute of Technology, Earth-Life Science Institute, Tokyo, Japan, Maxim Ballmer, ETH Zurich, Institute of Geophysics, Zurich, Switzerland and Kei Hirose, Earth-Life Science Institute, Meguro, Japan
Hitoshi Kawakatsu, Earthquake Research Institute, University of Tokyo, Ocean Hemisphere Research Center, Tokyo, Japan, LONG Xin, Earthquake Research Institute, University of Tokyo, Tokyo, Japan and Nozomu Takeuchi, Earthquake Research Institute, University of Tokyo, Yayoi, Japan
Yuki Suzuki1, Kenji Kawai2, Robert J Geller3, Anselme F E Borgeaud3 and Kensuke Konishi4, (1)The University of Tokyo, Earth and planetary science, Tokyo, Japan, (2)The university of Tokyo, Earth and planetary science, Tokyo, Japan, (3)University of Tokyo, Bunkyo-ku, Japan, (4)Academia Sinica, Taipei, Taiwan
Claire Richardson, University of Nebraska Lincoln, Lincoln, NE, United States, syede Sima Mousavi, University of Leipzig, Leipzig, Germany, Hrvoje Tkalcic, Australian National University, Canberra, ACT, Australia and Guy Masters, UCSD Scripps Inst Oceanography, La Jolla, CA, United States
Tolulope M Olugboji, University of Maryland College Park, College Park, MD, United States, Pritwiraj Moulik, Columbia University of New York, New York, NY, United States, Alain Plattner, California State University Fresno, Fresno, CA, United States and Vedran Lekic, University of Maryland, Department of Geology, Washington, DC, United States
Surya Pachhai, University of California San Diego, La Jolla, CA, United States, Guy Masters, UCSD Scripps Inst Oceanography, La Jolla, CA, United States and Gabi Laske, Scripps Institution of Oceanography, La Jolla, CA, United States
Maxwell L Rudolph1, Pritwiraj Moulik2 and Vedran Lekic2, (1)University of California Davis, Department of Earth and Planetary Sciences, Davis, CA, United States, (2)University of Maryland College Park, Department of Geology, College Park, MD, United States
Pritwiraj Moulik, University of Maryland College Park, Department of Geology, College Park, MD, United States, Vedran Lekic, University of Maryland, Department of Geology, Washington, DC, United States and Barbara A Romanowicz, Berkeley Seismological Lab, Berkeley, CA, United States
Anant Hariharan, Cornell University, Earth and Atmospheric Sciences, Ithaca, NY, United States, Pritwiraj Moulik, Columbia University of New York, New York, NY, United States and Vedran Lekic, University of Maryland, Department of Geology, Washington, DC, United States
Paul M Bremner, University of Florida, Department of Geological Sciences, Gainesville, FL, United States, Alessandro M Forte, University of Florida, Gainesville, FL, United States, Nathan A Simmons, Lawrence Livermore Nat'l Lab, Livermore, CA, United States and Steve Grand, University of Texas at Austin, Austin, TX, United States
Vedran Lekic1, Pritwiraj Moulik1 and Barbara A Romanowicz2,3, (1)University of Maryland College Park, Department of Geology, College Park, MD, United States, (2)Institut de Physique du Globe de Paris, Paris, France, (3)Berkeley Seismological Laboratory, UC Berkeley, Berkeley, CA, United States