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Možnosti hydrogeologického výzkumu krasu v oblasti Loferer Schacht v pohoří Loferer Steinberge v Rakousku
 Žák, Karel
The main purpose of this report is to make a feasibility study for a karst hydrogeological project in the Loferer Schacht cave and adjacent area, Loferer Steinberge, Austria. From a hydrogeological point of view, the known part of this cave system (vertical cave extent +9.8/-796.7 m, mapped length 7,800 m) occurs within the unsaturated (vadose) zone. Based on a pilot field survey, evaluation of the geological structure, and a preliminary study of groundwater residence time using oxygen stable isotopes it can be concluded that the area is not suitable for a detailed project. The most principal obstacles for such a study are: i. the character of the dis-charge sites located in talus accumulation, which do not allow precise measurement of the discharge; ii. the long storage of precipitation in the recharge area as perennial snowfields and ice plugs in swallow holes; and iii. the problematic use of artificial water tracers because the springs are used as drinking water.
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