DI41B:
Deep and Dynamic: The Lower Boundary Layer, Mantle Plumes, and Their Role in Earth's Mantle Dynamics I

Submit an Abstract to this Session Please know the abstract submission deadline has passed. There are no exceptions to this deadline and no new abstracts can be submitted.
You can still search the program to see your colleague�s abstract submissions as well as the sessions submitted for the 2016 Fall Meeting. The final program will be released in early October.


Session ID#: 12849

Session Description:
Mantle dynamics at many scales is influenced by boundary layer processes. The bottom boundary layer controls plume generation and is dynamically linked to deep thermochemical features, such as LLSVPs and ULVZs, as well as to the outer core. Plumes rising from the bottom boundary layer sample the whole mantle and place their signature on Earth’s surface, providing insight into mixing of chemical heterogeneities and the state of the deep mantle.

This session aims to explore the structure, mechanisms and dynamics of the deep mantle boundary layer including (but not limited to) the generation of mantle plumes, interactions with deep thermochemical structures, the dynamics of the outer core, and the resultant surface observations that might provide useful constraints on this region. We welcome theoretical, experimental, and observational contributions from geodynamics, seismology, geomagnetism, mineral physics, petrology, and other disciplines.

Primary Convener:  Tobias Rolf, University of Oslo, Centre for Earth Evolution and Dynamics, Oslo, Norway
Conveners:  Keely Anne O'Farrell, University College London, London, United Kingdom, Scott D. King, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States and Robert Moucha, Syracuse University, Earth Sciences, Syracuse, NY, United States
Chairs:  Scott D. King, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States, Keely Anne O'Farrell, University College London, London, United Kingdom, Robert Moucha, Syracuse University, Earth Sciences, Syracuse, NY, United States and Tobias Rolf, University of Oslo, Centre for Earth Evolution and Dynamics, Oslo, Norway
OSPA Liaison:  Keely Anne O'Farrell, University College London, London, United Kingdom

Cross-Listed:
  • GP - Geomagnetism, Paleomagnetism and Electromagnetism
  • P - Planetary Sciences
  • T - Tectonophysics
Index Terms:

5430 Interiors [PLANETARY SCIENCES: SOLID SURFACE PLANETS]
8121 Dynamics: convection currents, and mantle plumes [TECTONOPHYSICS]
8124 Earth's interior: composition and state [TECTONOPHYSICS]
8147 Planetary interiors [TECTONOPHYSICS]

Abstracts Submitted to this Session:

Compatibility of an Observed Geoelectric Jerk With Field Variations Influenced by Highly Electrically Conducting LLSVP (146703)
Hisayoshi Shimizu, The University of Tokyo, Earthquake Research Institute, Tokyo, Japan and Hisashi Utada, University of Tokyo, Bunkyo-ku, Japan
Melting-induced chemical differentiation at the base of the Earth's Lower Mantle (170753)
Ilya Fomin, ETH Swiss Federal Institute of Technology Zurich, Zurich, Switzerland and Paul Tackley, ETH Zurich, Department of Earth and Planetary Sciences, Zurich, Switzerland
Restoration of the evolution of a plume, Numerical assessment of the compressible adjoint equations in geodynamics (171630)
Siavash Ghelichkhan, Australian National University, Research School of Earth Sciences, Canberra, ACT, Australia and Hans-Peter Bunge, Ludwig Maximilians University of Munich, Munich, Germany
Spin Transition in the Lower Mantle Minerals: A Single Solution for Two Enigmatic Problems-Superplumes and Mid-mantle Slab Stagnation (130989)
Russell Pysklywec1, Hosein Shahnas1 and David A Yuen2, (1)University of Toronto, Department of Earth Sciences, Toronto, ON, Canada, (2)University of Minnesota Twin Cities, Earth Sciences, Minneapolis, MN, United States
The formation of LLSVPs by subducted oceanic crust from supercontinent cycle and iron-spin transition (158463)
Chuan Huang, Curtin University, Earth Dynamics Research Group, The Institute for Geoscience Research (TIGeR), School of Earth and Planetary Sciences, Perth, WA, Australia, Wei Leng, University of Science and Technology of China, Hefei, China and Zhongqing Wu, University of Science and Technology of China, School of Earth and Space Sciences, Hefei, China
Trade-offs between obtaining plate-like surface motion and constraining core heat loss in global mantle convection models (137559)
Sean Michael Langemeyer1, Julian Philip Lowman1 and Paul Tackley2, (1)University of Toronto, Toronto, ON, Canada, (2)ETH Zurich, Department of Earth and Planetary Sciences, Zurich, Switzerland
Origin and evolution of the Perm Anomaly (136999)
Nicolas E Flament1,2, Simon Williams3, Dietmar Müller2, Michael Gurnis4 and Dan J Bower5, (1)University of Wollongong, School of Earth, Atmospheric and Life Sciences, Wollongong, NSW, Australia, (2)University of Sydney, EarthByte Group, Sydney, NSW, Australia, (3)University of Sydney, EarthByte Group, Sydney, Australia, (4)California Institute of Technology, Seismological Laboratory, Pasadena, CA, United States, (5)ETH Zurich, Institute of Geophysics, Department of Earth Sciences, Zurich, Switzerland
Crustal Footprint of the Hainan Plume beneath Southeast China (122445)
Hao Liu1, Fei Chen2, Wei Leng1 and Haijiang Zhang3, (1)University of Science and Technology of China, Hefei, China, (2)University of Science and Technology of China, school of earth and space sciences, Hefei, China, (3)University of Science and Technology of China, School of Earth and Space Sciences, Hefei, China
The Hainan Lone Plume Prompted By Encircling Subduction Zones around the South China Sea (153546)
Nan Zhang, Peking University, Beijing, China; Curtin University, Perth, Australia and Zheng-Xiang Li, Curtin University, Earth Dynamics Research Group, School of Earth and Planetary Sciences, Perth, WA, Australia
Resolving the Mantle Plume Heat Transfer Discrepancy (155340)
Mark Hoggard, University of Cambridge, Earth Sciences (Bullard Laboratories), Cambridge, United Kingdom, Ross E Parnell-Turner, Institute of Geophysics and Planetary Physics, Scripps Institution of Oceanography, University of California San Diego, La Jolla, United States and Nicky White, University of Cambridge, Bullard Laboratories, Cambridge, United Kingdom
Imaging the mantle transition zone beneath Hawaii from seismic Ps receiver functions (182414)
Matthew R Agius, Università Degli Studi Roma Tre, Dipartimento di Scienze, Rome, Italy, Catherine Rychert, Woods Hole Oceanographic Institution, Ocean and Earth Science, Woods Hole, MA, United States, Nicholas Harmon, University of Southampton, Ocean and Earth Science, Southampton, United Kingdom and Gabi Laske, University of California San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States
Resolving Plume Tails in the Lower Mantle With Finite Frequency Tomography: Insight From Synthetic Experiments (165236)
Ross Maguire, University of Michigan Ann Arbor, Department of Earth and Environmental Sciences, Ann Arbor, MI, United States, Jeroen Ritsema, University of Michigan, Department of Earth and Environmental Sciences, Ann Arbor, MI, United States, Peter E van Keken, Carnegie Institution for Science Washington, Washington, DC, United States, Mickael J. A. Bonnin, University of Nantes, Nantes planetology and geodynamics lab, Nantes, France, Saskia D B Goes, Imperial College London, Department of Earth Science and Engineering, London, United Kingdom and Andreas Fichtner, ETH Zurich, Institute of Geophysics, Zurich, Switzerland
Testing the seismic signature of upper-mantle plumelets: application to the Northern East-African Rift (158109)
Chiara Civiero, Imperial College London, London, SW7, United Kingdom, Saskia D B Goes, Imperial College London, Department of Earth Science and Engineering, London, United Kingdom, John J Armitage, Institut de Physique du Globe de Paris, Paris, France and James O S Hammond, Imperial College London, London, United Kingdom

See more of: Study of Earth's Deep Interior