1. Université du Québec á Montréal and GEOTOP Montréal QC H3C 3P8 Canada
2. Centre Eau Terre et Environnement and GEOTOP Institut National de la Recherche Scientifique Québec QC G1K 9A9 Canada
3. Department of Geosciences UiT The Arctic University of Norway in Tromsø Postboks 6050 Langnes Tromsø N‐9037 Norway
4. Division of Glacial Environmental Research Korea Polar Research Institute Incheon 21990 Korea