1. Research Assistant, Institute for Geotechnical Engineering, Swiss Federal Institute of Technology, ETH Zurich, CH-8093 Zurich, Switzerland (corresponding author).
2. Senior Research Scientist, Institute for Geotechnical Engineering, Swiss Federal Institute of Technology, ETH Zurich, CH-8093 Zurich, Switzerland.
3. Professor, Institute for Geotechnical Engineering, Swiss Federal Institute of Technology, ETH Zurich, CH-8093 Zurich, Switzerland.