Increase of 14C Activity of Dissolved Inorganic Carbon Along a River Course
Issue Date
1986-01-01Keywords
Korana Riverhydrology
inorganic materials
Yugoslavia
surveys
equations
mathematical models
numerical analysis
Southern Europe
Holocene
Europe
Cenozoic
Quaternary
C 14
carbon
isotopes
radioactive isotopes
geochemistry
Metadata
Show full item recordCitation
Srdoč, D., Krajcar-Bronić, I., Horvatinčić, N., & Obelić, B. (1986). Increase of 14C activity of dissolved inorganic carbon along a river course. Radiocarbon, 28(2A), 515-521.Publisher
American Journal of ScienceJournal
RadiocarbonDescription
From the 12th International Radiocarbon Conference held in Trondheim, June 24-28, 1985.Additional Links
http://radiocarbon.webhost.uits.arizona.edu/Abstract
Results of measurements for 3 years (1981-1983) of 14C activity of dissolved inorganic carbon (DIC) in water samples from the Korana River, as well as that of recent tufa and aquatic plants, showed that 14C concentration increases from karst spring to the estuary. A model describing the increase of 14C activity was developed assuming that the increase is due to the exchange of the dissolved CO2 in stream water with atmospheric CO2 and to dissolution of CO2 from the decay of organic material and root respiration. It is possible to distinguish these two contributions by measuring the delta-13C values of DIC in water. As expected, our data show that the exchange process between atmospheric CO2 and DIC dominates at rapids and waterfalls, while biologic contribution is much higher in lakes and along the lowland flow of the Korana River. Agreement between the calculated and the measured activities supports the proposed mechanisms of chemical and isotopic exchanges in stream waters.Type
Proceedingstext
Language
enISSN
0033-8222ae974a485f413a2113503eed53cd6c53
10.1017/S0033822200007669