HYDROGEOLOGICAL INVESTIGATIONS ON THE GROUNDWATER SITUATION IN THE DOSENBACH VALLEY, AUSTRIA, WITH SPECIAL REGARD TO ISOTOPIC MEASUREMENTS

摘要

Analyses of ~2H, ~3H, and ~(18)O contents of water and single well tracer tests were performed in order to investigate the recharge conditions in porous sediments of rockfall origin and in the bedrock prasinite. The isotopic results analysis reveals that the groundwater in the northern part of the valley is recharged by infiltration at different altitudes from the northern rock slope and in the southern part by creek water infiltration. The hydraulic conductivities derived from single well tracer results show optimum correlation with groundwater ages, which were calculated by the exponential model.