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Tracing the Relationship between Precipitation and River Water in the Northern Carpathians Base on the Evaluation of Water Isotope Data

1
Faculty of Forestry, Ștefan cel Mare University of Suceava, 720229 Suceava, Romania
2
Institute for Geological and Geochemical Research, Research Centre for Astronomy and Earth Sciences, Hungarian Academy of Sciences, 1112 Budapest, Hungary
3
Stable Isotope Laboratory, Ștefan cel Mare University of Suceava, 720229 Suceava, Romania
4
Department of Geography, Ștefan cel Mare University of Suceava, 720229 Suceava, Romania
5
Paleoclimate Dynamics Group, Alfred-Wegener-Institute for Polar and Marine Research, Bussestrasse 24, D-27570 Bremerhaven, Germany
*
Author to whom correspondence should be addressed.
Geosciences 2019, 9(5), 198; https://doi.org/10.3390/geosciences9050198
Received: 18 January 2019 / Revised: 23 April 2019 / Accepted: 28 April 2019 / Published: 2 May 2019
(This article belongs to the Special Issue Isotope Geochemistry of Meteoric Waters)
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Abstract

The aim of this study is to investigate the stable isotope composition of precipitation and river water from the northeastern part of Romania. For this study, we collected monthly samples (for variable periods of time) of precipitation from six stations, and river water from three stations, between March 2012 and December 2017. The precipitation in the area is sourced mainly from the Atlantic Ocean, and secondarily from the Black Sea, local recycling being important especially in summer. We found that the seasonal δ18O in precipitation is in agreement with the seasonal temperature variability, as shown by the significant correlation coefficient between the two variables (r = 0.77), which indicates that the temperature has an important role in the δ18O variability in precipitation water in this region. The local meteoric water line in the northeastern part of Romania is defined by the equation δ2H = 7.80 × δ18O + 7.47, (r2 = 0.99, n = 121). The results presented in this study emphasize that the δ18O (and δ2H) and d-excess variability are strongly influenced by temperature, precipitation and the prevailing large-scale atmospheric circulation. View Full-Text
Keywords: stable isotopes; oxygen; hydrogen; precipitation; river; deuterium excess; Romania stable isotopes; oxygen; hydrogen; precipitation; river; deuterium excess; Romania
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Nagavciuc, V.; Bădăluță, C.-A.; Ionita, M. Tracing the Relationship between Precipitation and River Water in the Northern Carpathians Base on the Evaluation of Water Isotope Data. Geosciences 2019, 9, 198.

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