Unraveling the optical shape of snow

A Robledano, G Picard, M Dumont, F Flin… - Nature …, 2023 - nature.com
The reflection of sunlight off the snow is a major driver of the Earth's climate. This reflection is
governed by the shape and arrangement of ice crystals at the micrometer scale, called snow …

Numerical and experimental investigations of the effective thermal conductivity of snow

N Calonne, F Flin, S Morin, B Lesaffre… - Geophysical …, 2011 - Wiley Online Library
We carried out numerical simulations of the conductivity of snow using microtomographic
images. The full tensor of the effective thermal conductivity (keff) was computed from 30 …

3-D image-based numerical computations of snow permeability: links to specific surface area, density, and microstructural anisotropy

N Calonne, C Geindreau, F Flin, S Morin… - The …, 2012 - tc.copernicus.org
We used three-dimensional (3-D) images of snow microstructure to carry out numerical
estimations of the full tensor of the intrinsic permeability of snow (K). This study was …

Thermal conductivity of snow, firn, and porous ice from 3‐D image‐based computations

N Calonne, L Milliancourt, A Burr… - Geophysical …, 2019 - Wiley Online Library
Estimating thermal conductivity of snow, firn, and porous ice is key for modeling the thermal
regime of alpine and polar glaciers. Whereas thermal conductivity of snow was widely …

[HTML][HTML] Surface area and size distribution of cement particles in hydrating paste as indicators for the conceptualization of a cement paste representative volume …

M Hlobil, I Kumpová, A Hlobilová - Cement and Concrete Composites, 2022 - Elsevier
The conceptualization of a representative volume element (RVE) of hardened cement paste
for numerical homogenization of mechanical problems rests on identifying the largest …

Characterization of microstructural and physical properties changes in biocemented sand using 3D X-ray microtomography

A Dadda, C Geindreau, F Emeriault, SR Du Roscoat… - Acta Geotechnica, 2017 - Springer
An experimental study has been performed to investigate the effect of the biocalcification
process on the microstructural and the physical properties of biocemented Fontainebleau …

Microstructure-based modeling of snow mechanics: a discrete element approach

P Hagenmuller, G Chambon, M Naaim - The Cryosphere, 2015 - tc.copernicus.org
Rapid and large deformations of snow are mainly controlled by grain rearrangements, which
occur through the failure of cohesive bonds and the creation of new contacts. We exploit a …

Study of a temperature gradient metamorphism of snow from 3-D images: time evolution of microstructures, physical properties and their associated anisotropy

N Calonne, F Flin, C Geindreau, B Lesaffre… - The …, 2014 - tc.copernicus.org
We carried out a study to monitor the time evolution of microstructural and physical
properties of snow during temperature gradient metamorphism: a snow slab was subjected …

Energy-based binary segmentation of snow microtomographic images

P Hagenmuller, G Chambon, B Lesaffre, F Flin… - Journal of …, 2013 - cambridge.org
X-ray microtomography has become an essential tool for investigating the mechanical and
physical properties of snow, which are tied to its microstructure. To allow a quantitative …

Sensitivity of snow density and specific surface area measured by microtomography to different image processing algorithms

P Hagenmuller, M Matzl, G Chambon… - The …, 2016 - tc.copernicus.org
Microtomography can measure the X-ray attenuation coefficient in a 3-D volume of snow
with a spatial resolution of a few microns. In order to extract quantitative characteristics of the …