Isotopic Peculiarities of Meteoric Water in Polar Regions
作者:
K. Wetzel,
期刊:
Isotopenpraxis Isotopes in Environmental and Health Studies
(Taylor Available online 1990)
卷期:
Volume 26,
issue 1
页码: 11-13
ISSN:0021-1915
年代: 1990
DOI:10.1080/10256019008624211
出版商: Taylor & Francis Group
关键词: antaretic regions;aretic regions;atmospheric precipitations;climates;deuterium;evaporation;ice;isotope effects;isotope ratio;mathematical models;oxygen 18;vapour condensation
数据来源: Taylor
摘要:
It is demonstrated that the slope m. and the intersect q of the regression line δD = m δ18O + q describing the correlation between δD and δ18O in precipitation water of typical global climatic zones are in the normal range of m = 7 ÷ 9 and q = 8 ÷ 12 with one pronounced exception. Meteoric water in northern polar and arctic zone is distinguished by normal m value (m = 7.68) and an extremely low q value (q = 4.50). This anomaly is probably due to the fact that the arctic ice cover prevents the formation of that particular surface layer the evaporation of which produces the common source of meteoric water with δD = −22‰ and δ18O = –;4‰.
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