10.18453/rosdok_id00001930 Ullrich Mathias, Dettmann Dettmann Ullrich Mathias http://d-nb.info/gnd/110614158X Universität Rostock 2017 550 Earth sciences 2017 en http://purl.uni-rostock.de/rosdok/id00001930 urn:nbn:de:gbv:28-diss2017-0094-8 This thesis improves the characterization of unsaturated hydraulic properties for different types of peat and other organic soils at the laboratory and the field scale. First, suggestions for a general improvement of the unsaturated hydrological modeling in peatlands are made. Second, a novel one-dimensional expression for calculating specific yield for shallow groundwater systems with microrelief has been derived which was the basis for the development of a novel in situ method for determining soil water retention characteristics in shallow groundwater systems.