Variability (in time) of the isotopic composition of precipitation: consequences regarding the isotopic composition of hydrologic systems.

J. R. Gat

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

15 Scopus citations

Abstract

The stable isotopic signature in precipitation is primarily imposed by the synoptic history of the air masses, namely, by the vapour origin and the rainout history en route. Mixing patterns in the cloud and rain intensity affect the isotopic composition of rain to some extent. During the recharge to groundwaters, additional isotopic change may occur due to isotope fractionation which accompanies evaporative water loss from the surface or soil (mainly in arid zones), or selection of part of the rainfall by run-off or transpiration. Changes in the meteorological pattern and climate express themselves 'isotopically' both due to the changing synoptic patterns and the secondary isotope fractionation and selection which accompany the rain-forming and the groundwater recharge process. For the latter case, the rain intensities and the intervals between individual rain events are of major importance. (Author's abstract)-A.W.H.

Original languageEnglish
Title of host publicationIsotope techniques in water resources development. Proc. IAEA symposium, Vienna, 1987
Subtitle of host publication (IAEA; Proceedings Series, STI/PUB/757)
Place of PublicationVienna
PublisherInternational Atomic Energy Agency
Pages551-563
Number of pages13
ISBN (Print)92-0-040087-6
StatePublished - 1987
Externally publishedYes

ASJC Scopus subject areas

  • Environmental Science (all)
  • Earth and Planetary Sciences (all)

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