Articles | Volume 3, issue 2
Geosci. Instrum. Method. Data Syst., 3, 179–185, 2014
https://doi.org/10.5194/gi-3-179-2014
Geosci. Instrum. Method. Data Syst., 3, 179–185, 2014
https://doi.org/10.5194/gi-3-179-2014

  24 Sep 2014

24 Sep 2014

An instrumented sample holder for time-lapse microtomography measurements of snow under advective airflow

P. P. Ebner1,2, S. A. Grimm2, M. Schneebeli2, and A. Steinfeld1,3 P. P. Ebner et al.
  • 1Department of Mechanical and Process Engineering, ETH Zurich, 8092 Zurich, Switzerland
  • 2WSL Institute for Snow and Avalanche Research SLF, 7260 Davos-Dorf, Switzerland
  • 3Solar Technology Laboratory, Paul Scherrer Institute, 5232 Villigen, Switzerland

Abstract. An instrumented sample holder was developed for time-lapse microtomography of snow samples to enable in situ nondestructive spatial and temporal measurements under controlled advective airflows, temperature gradients, and air humidities. The design was aided by computational fluid dynamics simulations to evaluate the airflow uniformity across the snow sample. Morphological and mass transport properties were evaluated during a 4-day test run. This instrument allows the experimental characterization of metamorphism of snow undergoing structural changes with time.