1. Permafrost Research Section, Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Germany and Institute of Geosciences, University of Potsdam, Germany
2. Permafrost Research Section, Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Germany and Geography Department, Humboldt-Universität zu Berlin, Germany
3. Permafrost Research Section, Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Germany
4. Institute of Northern Engineering, University of Alaska Fairbanks, United States
5. Glaciology Division, Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Germany
6. Department of Computer Science, Humboldt-Universitat zu Berlin, Germany