Hydrogeophysical Observation of Soil Moisture Variations in the Root Zone

A017 Z-99 HYDROGEOPHYSICAL OBSERVATION OF Abstract Summary 1 We monitored with hydrogeophysical techniques temporal and spatial variations of soil moisture due to water uptake of roots during two small scale experiments (cm range) and compared single point (e.g. TDR) and two-dimensional (geoelectrical) measurements. Therefore we observed several weeks the distribution of water content with in pots and found (a) regularly diurnal rhythms (b) seasonal variations and (c) significant heterogeneity of soil moisture in space. Introduction SOIL MOISTURE VARIATIONS IN THE ROOT ZONE U. WERBAN AND S. A. AL HAGREY University of Kiel Institute of Geosciences Geophysics Otto-Hahn-Platz 1 24118 Kiel