MR31A:
Ice Microstructures and Deformation Behavior: On Earth and Beyond II


Session ID#: 8165

Session Description:
Microscopic features such as grain (and subgrain) boundaries, impurities, and defect concentration and mobility influence macroscopic behavior of ice, including its rheology and transport properties. Improved analysis, modeling, and interpretation of ice microstructures are therefore imperative for a better understanding of the deformation mechanisms. In addition, linking microstructures to geophysical signals such as radar imaging and seismic profiling will enable mapping of microstructures in 3 and 4 dimensions.

We encourage contributions from glaciology, planetary science, materials science, structural geology, rock mechanics, and mineral physics. We welcome contributions dealing with all aspects of microstructures and micro-deformation, from brittle to ductile behavior, including the influence of porosity, fluids, impurities, second phases, texture development, and recrystallization. The session should be of interest to all those seeking a better understanding of deformation and evolution of snow and ice, from polar ice caps, mountain glaciers, and sea ice to the crusts of icy satellites.

Primary Conveners:  Christine McCarthy, Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, United States
Conveners:  Peter R Sammonds, University College London, Institute for Risk and Disaster Reduction, London, United Kingdom, Stephen H Kirby, U. S. Gelogical Survey, Menlo Park, CA, United States and Lucas Zoet, University of Wisconsin-Madison, Geoscience, Madison, WI, United States
Chairs:  Christine McCarthy, Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, United States and Peter R Sammonds, University College London, Institute for Risk and Disaster Reduction, London, United Kingdom
OSPA Liaisons:  Christine McCarthy, Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, United States

Cross-Listed:
  • C - Cryosphere
  • EP - Earth and Planetary Surface Processes
Index Terms:

0738 Ice [CRYOSPHERE]
3902 Creep and deformation [MINERAL PHYSICS]
5112 Microstructure [PHYSICAL PROPERTIES OF ROCKS]
8160 Rheology: general [TECTONOPHYSICS]

Abstracts Submitted to this Session:

Maurine Montagnat1,2, Thomas Chauve1,2, Baptiste Journaux1,2 and Fabrice Barou3, (1)CNRS, UMR5183, Grenoble, France, (2)Institut of Geosciences of Environment, UGA, CNRS, Grenoble, France, (3)GĂ©osciences Montpellier, Montpellier Cedex 05, France
David John Prior1, Narayana Golding2, William B Durham3, Meike Seidemann1, Sabrina Diebold4 and Johannes H P De Bresser5, (1)University of Otago, Geology, Dunedin, New Zealand, (2)Massachusetts Institute of Technology, Cambridge, MA, United States, (3)MIT 54-720, Cambridge, MA, United States, (4)Utrecht University, Utrecht, Netherlands, (5)Utrecht University, Utrecht, 3584, Netherlands
Kaitlin Keegan, Niels Bohr Institute - University of Copenhagen, Copenhagen, Denmark, Dorthe Dahl-Jensen, University of Copenhagen, Centre for Ice and Climate, Niels Bohr Institute, Copenhagen, Denmark, Maurine Montagnat, Institut of Geosciences of Environment, UGA, CNRS, Grenoble, France and Ilka Weikusat, Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany
Chao Qi, University of Pennsylvania, Philadelphia, PA, United States and David L Goldsby, University of Pennsylvania, Department of Earth and Environmental Sciences, Philadelphia, PA, United States
Rachel W Obbard and Ross Lieblappen, Dartmouth College, Hanover, NH, United States
Tess Elaina Caswell1, Reid F Cooper1 and David L Goldsby2, (1)Brown University, Providence, RI, United States, (2)University of Pennsylvania, Department of Earth and Environmental Sciences, Philadelphia, PA, United States
Julie C Castillo, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States, Christine McCarthy, Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, United States and Elizabeth M. Carey, Jet Propulsion Laboratory, Pasadena, CA, United States