Authors:
József Kovács Dept. of Applied and Environmental Geology, Eötvös Loránd University, Budapest H-1117 Budapest, Pázmány P. sétány 1/c, Hungary

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László Márkus Dept. of Probability Theory and Statistics, Eötvös Loránd University, H-1117 Budapest, Pázmány P. sétány 1/c, Hungary

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Gábor Halupka Duna-Ipoly National Park Directorate H-1021 Budapest, Hűvösvölgyi út 52, Hungary

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The fluctuation of underground karstwater levels constitutes an inherently random, very complex time-dependent phenomenon further complicated when human interference disturbs the natural course. However, its structure can be explored by identifying only a few latent effects or factors (usually of significantly simpler dynamic structure), that are the driving forces behind it. The correct statistical tool to determine latent effects from the temporally interdependent observations is dynamic factor analysis (DFA). Analogously to ordinary factor analysis, DFA also determines loadings representing the measure of intensity of the latent effect corresponding to the factor. The obtained factor-intensities provide essential information on the geologic environment, improving the chance of correct decisions when environmental issues are on the agenda. In the given case the factors correspond to the infiltration and water extraction; hence, the intensities appear to be connected to aquifer vulnerability. Intensive water extraction increases the danger of contamination of an aquifer, since overpumping may establish contact with a distant, already polluted storage. High-intensity infiltration also increases vulnerability by helping local entry of any surface contaminant into the aquifer. Hence, the loadings and the measure of intensity can be regarded as important markers of vulnerability of the aquifer.

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Acta Geologica Hungarica
Language English
Size  
Year of
Foundation
1952
Publication
Programme
changed title
Volumes
per Year
 
Issues
per Year
 
Founder Magyar Tudományos Akadémia  
Founder's
Address
H-1051 Budapest, Hungary, Széchenyi István tér 9.
Publisher Akadémiai Kiadó
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 0236-5278 (Print)
ISSN 1588-2594 (Online)

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