Ice microstructures and micro-deformation mechanisms

MicroDICE session at the EGU (European Geosciences Union) General Assembly 2014

Convener: Martyn Drury
Co-Conveners: Martin Schneebeli, Maurine Montagnat, Peter Sammonds, Paul  Bons

Abstract submission (deadline 16 January 2014): click here.
Understanding the dynamic behaviour of ice in glaciers, polar ice caps 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.