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Statistical analyses of stable isotopes time series in precipitation in Ljubljana - Slovenia (CROSBI ID 553315)

Prilog sa skupa u zborniku | sažetak izlaganja sa skupa

Vreča, Polona ; Brenčič, Mihael ; Krajcar Bronić, Ines ; Leis, A. Statistical analyses of stable isotopes time series in precipitation in Ljubljana - Slovenia // Geophysical Research Abstracts, vol. 11, EGU2009-8492-2, 2009. 2009

Podaci o odgovornosti

Vreča, Polona ; Brenčič, Mihael ; Krajcar Bronić, Ines ; Leis, A.

engleski

Statistical analyses of stable isotopes time series in precipitation in Ljubljana - Slovenia

The stable isotopic composition of hydrogen and oxygen (delta2H and delta18O) and tritium activity are monitored in monthly precipitation at Ljubljana since 1981. Seasonal variations of delta2H and delta18O are observed and are typical for continental stations of the Northern Hemisphere. The weighted mean delta delta2H and delta18O values are -59%o and -8.6%o, respectively. The orthogonal Local Meteoric Water Line is delta2H = (8.06 +- 0.08) delta18O + (9.84 +- 0.71), and the temperature coefficient of delta18O is 0.29%o/oC. Deuterium excess weighted mean value is 9.5%o and indicates the prevailing influence of the Atlantic air masses. Tritium activity in monthly precipitation shows also seasonal variations which are superposed to the decreasing trend of mean annual activity. In the paper overview of the measurements and statistical analyses are given for complete set of numerical data for the period 1981 – 2006.

precipitation; tritium; stable isotopes; 2H; 18O; Ljubljana

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Podaci o prilogu

2009.

objavljeno

Podaci o matičnoj publikaciji

Geophysical Research Abstracts, vol. 11, EGU2009-8492-2, 2009

Podaci o skupu

EGU General Assembly 2009

poster

20.04.2009-24.04.2009

Beč, Austrija

Povezanost rada

Fizika, Geologija