Monday, 15 May 2017
Dr Felix Ng
Department of Geography
University of Sheffield
"A Glaciologist's Journey Into Crystal-Growth Studies"
The spreading of the polar ice sheets is a slow viscous flow with nonlinear rheology. Besides temperature, grain sizes and crystal orientation within the polycrystalline ice are important factors behind the rheology. After introducing this context, I will describe two mathematical models recently built to understand grain-size evolution. The first model is formulated to capture the observed grain-size profiles in ice cores. The second model explores the fundamental process of normal grain growth, a coarsening process that occurs in metals as well as ice.
WHEN: Monday 15 May 2017
WHERE: Room 314, Science 3 Building
TIME: 3.00 pm–4.00 pm
All interested are welcome to attend
Light refreshments to follow in Common Room