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Two Decades of Environmental Isotope Records in Croatia: Reconstruction of the Past and Prediction of Future Levels

Published online by Cambridge University Press:  18 July 2016

Ines Krajcar-Bronić ,
Nada Horvatinčić  and
Bogomil Obelić
Ines Krajcar-Bronić
Affiliation:
Ruder Bošković Institute, P.O. Box 1016, 10001 Zagreb, Croatia
Nada Horvatinčić
Affiliation:
Ruder Bošković Institute, P.O. Box 1016, 10001 Zagreb, Croatia
Bogomil Obelić
Affiliation:
Ruder Bošković Institute, P.O. Box 1016, 10001 Zagreb, Croatia
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Abstract

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A two-decade-long record of environmental isotopes (2H, 3H, 14C, 18O) in Croatia is presented and the data are statistically analyzed. The atmospheric 14C activity for the period before the actual measurements started is reconstructed by measuring tree rings from the clean-air sites, and the past tritium activity in precipitation is estimated by the correlation of our data with the Vienna station record. The long-term 3H record helped to determine a locally contaminated sampling site, and new clean sites are put into operation. The 14C data were fitted by an analytical function and the prediction of future levels is given assuming that the rate of the 14C releases remains constant. From the long-term stable isotope data record, the local meteoric water line and the temperature gradient of δ18O in precipitation are determined.

Type
Part 1: Methods
Information
Radiocarbon , Volume 40 , Issue 1: 16th International Radiocarbon Conference 16-20,1997 Groningen , 1997 , pp. 399 - 416
Copyright
Copyright © The American Journal of Science 

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