Technische Universitat Bergakademie Freiberg, Gustav-Zeuner Str. 12, Freiberg, 09599, Germany
US Geological Survey, 3215 Marine Street, Boulder, CO 80303, United States
University of Colorado, Department of Civil, Environmental and Architectural Engineering, University of Colorado, Boulder, CO 80309-0428, United States
US Geological Survey, 3215 Marine Street, Boulder, CO 80303, United States