Title Measuring snow in 3-D using X-ray tomography; assessment of visualization techniques
Author Heggli, M.; Köchle, B.; Matzl, M.; Pinzer, B.R.; Riche, F.; Steiner, S.; Steinfeld, D.; Schneebeli, M.
Author Affil Heggli, M., WSL Institute for Snow and Avalanche Research, Davos-Dorf, Switzerland
Source Annals of Glaciology, 52(58), p.231- 236, . Publisher: International Glaciological Society, Cambridge, United Kingdom. ISSN: 0260-3055
Publication Date 2011
Notes In English. 26 refs. GeoRef Acc. No: 310187
Index Terms avalanches; ice; mass movements (geology); mechanical properties; permeability; physical properties; porosity; snow; microstructure; computed tomography; connectivity; image analysis; mass movements; methods; physical models; snowpack; three- dimensional models; tomography; ultrastructure; visualization; X-ray data
Abstract Snow hides its true structure from easy visual observation. One reason is that ice is transparent, so the three-dimensional (3-D) structure is impossible to disentangle. 3-D reconstruction is essential to understand the physical and mechanical properties of snow. In recent years, the techniques to measure and visualize snow in 3-D have improved tremendously. X-ray microtomography is much more user-friendly than the older microtome sectioning techniques. We show different techniques to measure cast and natural snow samples and the steps necessary to produce high-quality data. The simplest way is 3-D renderings. Imaging snow in 3-D definitively challenges our previous view of a snowpack consisting of particles as traditionally seen on a crystal card.
Publication Type journal article
Record ID 65007376