1. Department of Earth and Planetary Sciences McGill University 3450 University Street Montreal QC H3A 0E8 Canada
2. Department of Civil Engineering University of Victoria PO Box 1700 STN CSC Victoria BC V8W 2Y2 Canada
3. Byrd Polar and Climate Research Centre The Ohio State University 108 Scott Hall, 1090 Carmack Rd Columbus OH 43210 USA
4. Instituto Geofísico del Perú Calle Badajoz #169, Mayorazgo IV Etapa, Ate Vitarte Lima Peru
5. Départment de génie de la construction École de technologie supérieure 1100 rue Notre‐Dame Ouest Montreal QC H3C 1K3 Canada