Tracer methods used to verify the hypothesis of Cvijić about the underground connection between Prespa and Ohrid Lake |
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| Authors: | Sokrat Amataj Todor Anovski Ralf Benischke Romeo Eftimi Laurence L. Gourcy Liliana Kola Ioannis Leontiadis Eftim Micevski Alqiviadis Stamos Jovan Zoto |
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| Affiliation: | (1) Institute of Nuclear Physics of Tirana, Tirana, Albania;(2) Faculty of Technology and Metallurgy, University of Skopje, FYR of Macedonia, Skopje, Macedonia;(3) Institute of Water Resources Management, Hydrogeology and Geophysics, Joanneum Research, Graz, Austria;(4) ITA Consult, Tirana, Albania;(5) Isotope Section, IAEA, Vienna, Austria;(6) IGME, Kozani, Greece |
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| Abstract: | ![]()
Prespa Lake and Ohrid Lake constitute a hydraulic system shared between Albania, FYR of Macedonia and Greece. Karst rocks separate both lakes. The elevation of Prespa Lake is about 150 m higher than that of Ohrid Lake. Considering these facts, Cvijić formulated in 1906 the hypothesis that Prespa Lake recharges the St. Naum and Tushemisht springs at Ohrid lakeside. Environmental isotopes demonstrated that Prespa Lake recharges about 37–42 and 52–54% of water emerging in St. Naum, and Tushemisht springs, respectively. An artificial tracer experiment carried out in 2002 physically demonstrated the underground connection between both lakes. This experiment confirmed the supposed underground connection and brought important information about the groundwater velocity, transit time, and karst water conduits development. |
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| Keywords: | Environmental isotopes Artificial tracer experiment Karst groundwater velocity transit time Karst water conduits Albania |
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