HR: 0830h
AN: H31B-0450    [PDF]
TI: Geoelectric Soil Parameters Measurements During Ponded Infiltration Experiments in Field
AU: * Kobr, M
EM: kobr@natur.cuni.cz
AF: Charles University in Prague, Faculty of Science, Albertov 6, Prague 2, 12843 Czech Republic
AU: Cislerova, M
AF: Czech Technical University in Prague, Thakurova 7, Prague 6, 16629 Czech Republic
AU: Knez, J
AF: Charles University in Prague, Faculty of Science, Albertov 6, Prague 2, 12843 Czech Republic
AU: Vogel, T
AF: Czech Technical University in Prague, Thakurova 7, Prague 6, 16629 Czech Republic
AU: Tesar, M
AF: Czech Academy of Science, Institute of Hydrodynamics, Pod Patankou 5, Prague 6, 16612 Czech Republic
AU: Novak, P
AF: Charles University in Prague, Faculty of Science, Albertov 6, Prague 2, 12843 Czech Republic
AB: An attempt to measure simultaneously the water propagation, a result of a series of ponded infiltration experiments, and the TDR and multi electrode profiling and georadar characteristics was performed in the experimental area Na Lizu, a part of in the experimental watershed Sputka, Czech Republic. The experiment was done during a dry period in the middle of July 2002. The soil profile is formed by coarse sandy loam of the depth of approximately 1 m over weathered crystalline bedrock, the ground water level is not present. The soil is heterogeneous and therefore the significant preferential flow is expected. The 12 ponded infiltrations were done in a regular grid of a square area of 10 x 10 m. For geophysical measurements various geometry of measuring schemes were tested since it was a pioneering attempt to couple these types of measuring techniques. From TDR the detailed distribution of electric permitivity along the vertical axis was obtained in time during the infiltration experiment. The multi electrode profiling gives as a result the vertical stratification of resistivity, the parameter expected to reflect changes of water content. In tracing the amount of downwards moving water the TDR and multi electrode profiling supplied promising information, meanwhile the sensitivity of georadar was not sufficient to detect the soil moisture changes.
DE: 0925 Magnetic and electrical methods
DE: 1832 Groundwater transport
DE: 1866 Soil moisture
DE: 1875 Unsaturated zone
SC: Hydrology [H]
MN: 2003 Fall Meeting