Geochemical and stable isotopic variability within two rivers rising under the same mountain,but belonging to two distant watersheds |
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| Authors: | Stanislav Fran?iškovi?-Bilinski Vlado Cuculi? Halka Bilinski Hermann Häusler Philipp Stadler |
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| Institution: | 1. Ru?er Boškovi? Institute, Division for Marine and Environmental Research, POB 180, HR-10002 Zagreb, Croatia;2. University of Vienna, Faculty of Earth Sciences, Geography and Astronomy, Department for Environmental Geosciences, Althanstraße 14, A-1090 Vienna, Austria |
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| Abstract: | Complementary geochemical and stable isotope investigations of the Gorski Kotar karst aquifer system in western Croatia were obtained for the first time, to answer the question whether both studied rivers drain the same aquifer system or not. The two main rivers, the Kupa and the Rje?ina, rise under the same mountain range, but belong to two different watersheds (Black Sea and Adriatic Sea). The karst aquifer of Gorski Kotar is a potentially important source of drinking water for two neighboring countries, Croatia and Slovenia (Central and South Europe), and is strongly influenced by both Mediterranean and continental weather conditions. It is a part of the Dinaric karst, which is “locus typicus” for karst worldwide and one of the most typical karst areas in the world. |
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| Keywords: | Kupa and Rje?ina rivers (Croatia) Risnjak National Park Perhumid climate Physical&ndash chemical parameters Sediment and water chemistry Stable isotopes (deuterium and oxygen-18) Transboundary karst aquifer Water quality |
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