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Application of Stable Isotopes and Tritium in Hydrology

The Special Issue (SI) of the MDPI journal Water, entitled “Application of stable isotopes and tritium in hydrology” addresses the current state-of-the-art applications of stable isotopes and tritium in studies of hydrological processes in various compartments of the water cycle. It can be considered as a sequel of the previous SI, “Use ofWater Stable Isotopes in Hydrological Process”. However, this SI is the only (closed) special issue of the journal Water—Hydrology and Hydrogeology Section that in the title explicitly mentions “tritium”, the radioactive isotope of hydrogen of both natural (cosmogenic) and anthropogenic origin. A total of nine papers were submitted for publication and they have undergone a scrutinized review process. Eventually, six papers passed the rigorous review by at least two recognized international reviewers and extensive editorial checks. The papers compiled in this SI show a wide variety of topics: isotope distribution in precipitation and groundwater on regional scales, the relation between isotopes in precipitation and ground and drip water in a karst area, effects of evapotranspiration, and farming activities on water isotope composition. Three out of six papers describe isotope studies in a karst area of Croatia, while the other papers consider the Iberian Peninsula, the United States of America, and China.

tritium ; stable isotopes ; applications ; hydrology

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