8th Seminar on Mathematics for various disciplines
(COE Partner Seminar, Department of Mathematics, Hokkaido University )
Outline
- Period :
- November 8, 2006 (Wednesday) 10:30-11:30
- Place :
- Graduate School of Mathematical Sciences the University of Tokyo, Room #056
- Programme :
-
- Dr. Fredric Flin (Hokkaido University)
- Using 3D images of snow structures to study the metamorphism processes: experiment, image analysis, theoretical modeling and simulation
- ABSTRACT:
- Snow, from its fall until its full melting, undergoes transformations of its microstructure with time. This process, named“metamorphism”, drastically influences its physical, thermal and mechanical properties and is of great interest in snow and ice sciences. The recent possibility of acquiring 3D images of small snow samples opens new opportunities for investigating snow in details. For this purpose, we developed specific algorithms in order to extract the relevant geometrical and physical parameters from the imaged samples(e.g. normal and curvature fields, specific surface area). We then used these estimators to develop 3D models that simulate the time-lapse transformations of snow directly from an experimentally observed microstructure. These models, which can be checked with experiments in cold room, offer new outlooks for the study of snow metamorphism.
