DI007
Bridging the observational gap: Integrating laboratory, field, and geophysical datasets to quantify mantle properties and processes

Session ID#: 161271

Session Description:
Recent improvements in the quality and quantity of geophysical datasets and advances in imaging techniques have provided unprecedented resolution of Earth’s mantle wave speed, seismic anisotropy, attenuation, resistivity, and density structure. Still, ambiguity exists in interpretation of parameters such as temperature, grain size, deformation mechanism, viscosity, composition, and melt/volatile content, which influence and/or record geologic processes. Recent laboratory experiments and observations probe the grain-scale properties of Earth materials and quantify their influence on geophysical observables, providing the framework to meaningfully interpret geophysical observations in terms of the underlying physics of mantle materials. Extrapolation of laboratory-derived constraints to Earth conditions is associated with uncertainties, and comparison of predictions against geophysical observables is necessary to  evaluate model success. We welcome contributions from all solid-earth fields such as geodesy, geodynamics, mineral physics, seismology, petrology, geochemistry, and geology that integrate or compare laboratory and field-based constraints with geophysical observations to quantify mantle properties and processes.
Co-Organized:
  • MR - Mineral and Rock Physics
  • S - Seismology
  • T - Tectonophysics
Index Terms:

3999 General or miscellaneous [MINERAL PHYSICS]
7208 Mantle [SEISMOLOGY]
8120 Dynamics of lithosphere and mantle: general [TECTONOPHYSICS]
8162 Rheology: mantle [TECTONOPHYSICS]

Primary Convener:  William Joseph Shinevar, University of Colorado at Boulder, Boulder, United States
Conveners:  Joshua B Russell, Brown University, Providence, RI, United States, Chhavi Jain, Washington University in St Louis, St. Louis, MO, United States and Hatsuki Yamauchi, Lamont Doherty Earth Observatory, Columbia University, Palisades, United States
Student/Early Career Convener:  Manuel Pimenta Silva, ETH Zürich, Institute of Geochemistry and Petrology, Zurich, Switzerland
 
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Arwen Fedora Deuss, Sujania Talavera-Soza, Runa van Tent, Lisanne Jagt and Laura J Cobden, Utrecht University, Utrecht, Netherlands
 
Where is the G Discontinuity, what does it represent, and how can we tell? A case study from the NoMelt Experiment (Invited) (1044633)
Hannah F Mark, Woods Hole Oceanographic Institution, Woods Hole, MA, United States, John A Collins, WHOI, Woods Hole, MA, United States, Daniel Lizarralde, Woods Hole Oceanographic Institution, Geology and Geophysics, Woods Hole, MA, United States, Greg Hirth, Brown Univeristy, Department of Earth, Environmental, and Planetary Sciences, Providence, RI, United States, James B Gaherty, School of Earth and Sustainability, Northern Arizona University, Flagstaff, United States, Rob L Evans, Woods Hole Oceanographic Institution, Woods Hole, United States and Mark D Behn, Boston College, Earth and Environmental Sciences, Chestnut Hill, United States
 
The Yellowstone Paradox: a decoupling of seismic velocity and attenuation. (1076616)
Rebeca Oliveira, University of Minnesota Twin Cities, Minneapolis, MN, United States and Maximiliano Bezada, University of Minnesota, Earth & Environmental Sciences, Minneapolis, MN, United States
 
Grain-boundary diffusion creep of olivine and its application to the oceanic upper mantle (Invited) (1082911)
Kosuke Yabe and Takehiko Hiraga, Earthquake Research Institute, University of Tokyo, Tokyo, Japan
 
Grain Size Sensitivity of Viscoelastic Relaxation in Dry, Melt-free Polycrystalline Olivine and its Seismological Implications (1087315)
Tongzhang Qu, Australian National University, Research School of Earth Sciences, Canberra, ACT, Australia; University College London, Department of Earth Sciences, London, United Kingdom, Ian Jackson, Australian Natl Univ, Canberra, Australia and Ulrich Faul, Massachusetts Institute of Technology, Earth Atmospheric and Planetary Sciences, Cambridge, MA, United States
 
Electrical Conductivity of Mantle Beneath the Northern Taiwan derived from C-response: A Preliminary Results (1099514)
Ding-Jiun Lin and Ping-Yu Chang, Institute of Geophysics National Central University, Taoyuan City, Taiwan
 
High-resolution seismic constraint on the seafloor sediments using teleseismic body waves of ocean bottom seismometers (1100583)
HyeJeong Kim, Hitoshi Kawakatsu, Takeshi Akuhara and Nozomu Takeuchi, Earthquake Research Institute, The University of Tokyo, Tokyo, Japan
 
The Grain- Boundary Ionic Conduction Induced by Interdiffusion between Minerals and the Implication to Conductive Anomalies in the Deep Earth (1101567)
Kui Han, Chengdu University of Technology, Chengdu, China, Xinzhuan Guo, Chinese Academy of Sciences, Guiyang, China and Simon Martin Clark, Macquarie Univ, Sydney, NSW, Australia
 
Mantle Temperature and Density Anomalies: The Influence of Thermodynamic Formulation, Melt, and Anelasticity (1170654)
Claudia Maria Adam, Kansas State University, Geology, Manhattan, KS, United States, Scott D King, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States and Mark J Caddick, Virginia Tech, Blacksburg, VA, United States
 
P-wave attenuation structure of the Tonga subduction zone and implications for mantle wedge processes (1178537)
Yurong Zhang1, Songqiao Shawn Wei2, Joseph S Byrnes3, Dongdong Tian4, Fan Wang1 and Maximiliano Bezada5, (1)Michigan State University, Department of Earth and Environmental Sciences, East Lansing, MI, United States, (2)Michigan State University, Department of Earth and Environmental Sciences, East Lansing, United States, (3)Northern Arizona University, School of Earth and Sustainability, Flagstaff, United States, (4)China University of Geosciences Wuhan, Wuhan, China, (5)University of Minnesota, Earth & Environmental Sciences, Minneapolis, MN, United States
 
Shallow Mantle Enrichment Beneath the Midcontinental Rift from Seismo-petrological Interpretation (1180115)
Keneni Godana, University of California Santa Barbara, Earth Science, Santa Barbara, United States and William Joseph Shinevar, Brown University, Providence, RI, United States
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