Imaging Freeze-Thaw Fronts in Fully Saturated Soil and Sand Using two MRI Pulse Sequences

John K Koestel1,2, Jan Sklenar3, Andreas J Pohlmeier4, Martina Sobotkova3, Tomas Princ5 and Michal Snehota3, (1)Agroscope, Soil Quality and Soil Use, Zurich, Switzerland, (2)Swedish University of Agricultural Sciences, Uppsala, Sweden, (3)Czech Technical University in Prague, Faculty of Civil Engineering, Prague, Czech Republic, (4)Forschungszentrum Jülich, Agrosphere (IBG-3), Deutschland, Germany, (5)Czech Technical University Prague, Prague, Czech Republic