Bitte wählen Sie ihr Lieferland und ihre Kundengruppe
Since 1974 until June 1978 we collected samples of precipitation at the site of the Nuclear Research Center, Juelich. Single precipitations, sampled during 1974, show a large variation of the exp 18 O/ exp 16 O ratio even within one day. The variation diminishes, if one compares the exp 18 O/ exp 16 O ratios of precipitation which was collected and pooled during each month. At our location we can see a minimum of the oxygen isotope ratio at March. The average of the exp 18 O/ exp 16 O ratio in the precipitation weighted by the amount of precipitation since 1974 until 1977 is -7.42 exp 0 /oo (related to Vienna-SMOW). The large scattering of the oxygen isotope ratio between single precipitations must be taken into account, if one works under field conditions. The results are the basic data, which help to describe the water turnover of our local ecosystem and the isotope fractionation of the biogeochemical oxygen cycle. (ERA citation 04:027958)