1. Quaternary Geology, Geological Survey of Norway, Trondheim, Norway
2. Institute of Arctic and Alpine Research, University of Colorado, Boulder, Colorado, USA
3. Department of Earth Sciences, University of Pisa, Pisa, Italy
4. Department of Geography, Durham University, Durham, UK
5. Department of Geosciences, UiT The Arctic University of Tromsø in Norway, Tromsø, Norway