Diurnal cycles of interstitial gaseous mercury inside a sub-arctic snow-pack prior to and during snowmelt events A. Dommergue, C.P. Ferrari, P.-A. Gauchard, L. Poissant et C.F. Boutron J. Phys. IV France, 107 (2003) 389-392 DOI: 10.1051/jp4:20030323