Titre du document / Document title
Microstructural characterization of firn
Auteur(s) / Author(s)
BAKER I. (1) ;
OBBARD R. (1) ;
ILIESCU D. (1) ;
MEESE D. (1 2) ;
Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)
(1) Thayer School of Engineering, Dartmouth College, Hanover, NH 03755, ETATS-UNIS
(2) Climate Change Institute, University of Maine, Orono, ME 04469, ETATS-UNIS
Résumé / Abstract
In this paper, we use a scanning electron microscope (SEM) coupled with X-ray spectroscopy and electron back-scattered diffraction patterns to examine fim in cores retrieved by the United States International Trans-Antarctic Scientific Expedition. From grain boundary grooves we were able to see where the previously existing snow crystals were joined, and can determine grain sizes. From the SEM images, the porosity and the surface area per unit volume of the pores were measured. Finally, we have shown that we can determine the microchemistry of impurities in firn and demonstrated that we can determine the orientations of the firn crystals.
Revue / Journal Title
Hydrological processes
ISSN
0885-6087
CODEN HYPRE3
Source / Source
2007, vol. 21, n
o12, pp. 1624-1629 [6 page(s) (article)] (3/4 p.)
Langue / Language
Anglais
Editeur / Publisher
Wiley, Chichester, ROYAUME-UNI
(1986)
(Revue)
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Localisation / Location
INIST-CNRS, Cote INIST : 21671, 35400016229222.0100
Nº notice refdoc (ud4) : 18792278
