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CR5.2

Ice microstructures and micro-deformation mechanisms
Convener: Peter Sammonds  | Co-Conveners: Martin Schneebeli , Maurine Montagnat , Paul D. Bons , Martyn Drury 
Orals
 / Wed, 30 Apr, 10:30–12:00  / Room Y11
Posters
 / Attendance Wed, 30 Apr, 17:30–19:00  / Blue Posters
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Understanding the dynamic behaviour of ice in glaciers, polar ice caps, the atmosphere and sea ice, especially in a time of changing climate, and in the icy planets, is a major challenge. The grain and sub-grain scale microstructure are crucial state variables that link atomic-scale processes to the macroscopic behaviour of ice, including its rheology and transport properties.
Improved analysis, modelling and interpretation of ice microstructures are therefore imperative for a better understanding of the flow and evolution of large ice bodies, from polar ice caps, mountain glaciers, sea ice to planetary ice. In addition, linking microstructures to geophysical signals such as radar imaging and seismic profiling will enable mapping of microstructures in 3 and 4 dimensions, and improved understanding will result from shared knowledge in cognoscent disciplines such as structural geology.
We wish to encourage contributions from glaciology, planetary science, structural geology, rock mechanics and mineral physics. We welcome contributions dealing with all aspects of microstructures and micro-deformation of earth and planetary materials, from brittle to ductile behaviour, including the influence of porosity, fluids, impurities, second phases, texture development and recrystallization.

This session is a contribution from the research networking programme on the Micro-Dynamics of ICE, Micro-DICE www.esf.org/microdice
Public information: Understanding the dynamic behaviour of ice in polar ice caps, in the atmosphere and oceans, and on icy planets, especially in a time of changing climate and new space exploration, represents a major challenge. The grain and sub-grain scale microstructure are the crucial link between atomic-scale processes to the macroscopic behaviour of ice, controlling both rheology and transport properties.
This session, with both oral and poster presentations, will highlight the recent advances and provide a platform for discussion of new observations, analyses, modelling and interpretation of snow and ice microstructures and micro-deformation mechanisms. It should be of interest to all those who seek a better understanding of the deformation and evolution of snow and ice, from polar ice caps, mountain glaciers, sea ice to planetary ice and those interested in linking microstructures to geophysical profiles. and sharing knowledge in cognoscent disciplines such as structural geology, planetary science, atmospheric physics and oceanography.
This session is a contribution from the ESF research networking programme on the Micro-Dynamics of ICE, Micro-DICE www.esf.org/microdice