Keita Yoshioka, Helmholtz Centre for Environmental Research UFZ Leipzig, Leipzig, Germany, Hua Shao, BGR Federal Institute for Geosciences and Natural Resources, Hannover, Germany, Olaf Kolditz, Helmholtz Center UFZ, Leipzig, Germany and Thomas Nagel, Freiberg University of Mining and Technology, Chair of Soil Mechanics and Foundation Engineering, Freiberg, Germany