1. M.Sc. Candidate, Dept. of Civil, Geological, and Mining Engineering, École Polytechnique, P.O. Box 6079, Station CV, Montréal, QC, Canada H3C 3A7.
2. Professor, Dept. of Civil, Geological, and Mining Engineering, École Polytechnique, P.O. Box 6079, Station CV, Montréal, QC, Canada H3C 3A7 (corresponding author).
3. Junior Engineer, M.Ing., Hydro-Québec, Études de sécurité, Direction Barrages et Infrastructures, Groupe Production, P.O. Box 75, Boul. René-Lévesque, 3e étage, Montréal, QC, Canada H2Z 1A4.