Journal ArticleDOI
Standard for Reporting Concentrations of Deuterium and Oxygen-18 in Natural Waters.
TLDR
A standard, based on the set of ocean water samples used by Epstein and Mayeda to obtain a reference standard for oxygen-18 data, but defined relative to the National Bureau of Standards isotopic reference water sample, is proposed for reporting both deuterium and oxygen- 18 variations in natural watersrelative to the same water.Abstract:
A standard, based on the set of ocean water samples used by Epstein and Mayeda to obtain a reference standard for oxygen-18 data, but defined relative to the National Bureau of Standards isotopic reference water sample, is proposed for reporting both deuterium and oxygen-18 variations in natural waters relative to the same water. The range of absolute concentrations of both isotopes in meteoric-waters is discussed.read more
Citations
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Journal ArticleDOI
Local vs. regional groundwater flow delineation from stable isotopes at Western North America springs.
TL;DR: The combination of location-specific precipitation data with stable isotopic groundwater data provides an effective method for flow path determination at springs, and local vs. regional flow derived hypothesis is tested.
Journal ArticleDOI
Oxygen isotopic composition of fogs and rains from the North Atlantic
R. Gonfiantini,A. Longinelli +1 more
TL;DR: In this article, the composizione isotopica dell'ossigeno in campioni di nebbia and pioggia raccolti principalmente nell'Atlantico nord-occidentale was determined.
Journal ArticleDOI
Geochemical and isotopic studies of bauxitization in the Tatun volcanic area, northern Taiwan
TL;DR: The Tatun volcanic area in the northern tip of Taiwan is composed of Pleistocene andesite and andesitic tuff, and the soil profiles can be divided into two zones by chemical characteristics as discussed by the authors.
Journal ArticleDOI
Geochemical variations during flash flooding, Meramec River basin, May 2000
W. E. Winston,Robert E. Criss +1 more
TL;DR: In 2000, severe flooding in the Meramec River basin followed an extraordinary rainfall event on May 7, 2000 as mentioned in this paper, which resulted in a three to 10-fold decrease in conductivity, a 100-fold or more increase in turbidity, and pH fluctuations over a range of 1.0 unit.
Journal ArticleDOI
Recharge, groundwater flow pattern and contamination processes in an arid volcanic area: Insights from isotopic and geochemical tracers (Bara aquifer system, Republic of Djibouti)
Mohamed Osman Awaleh,Paul Baudron,Youssouf Djibril Soubaneh,Tiziano Boschetti,Farhan Bouraleh Hoch,Nima Moussa Egueh,Jalludin Mohamed,Omar Assowe Dabar,Janie Masse-Dufresne,Jean Gassani +9 more
TL;DR: In this paper, a geochemical and isotopic survey was performed and combined with existing 14C data to study recharge, contamination processes and groundwater flow patterns inside and between the compartments of a complex aquifer system composed by basaltic rocks and by alluvium located in Petit Bara, Grand Bara and Mouloud areas (Southwest of Djibouti).
References
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Journal ArticleDOI
Isotopic Variations in Meteoric Waters
TL;DR: The relationship between deuterium and oxygen-18 concentrations in natural meteoric waters from many parts of the world has been determined with a mass spectrometer and shows a linear correlation over the entire range for waters which have not undergone excessive evaporation.
Journal ArticleDOI
Isotopic standards for carbon and oxygen and correction factors for mass-spectrometric analysis of carbon dioxide
TL;DR: In this paper, Niee's and Solenhofen standards were compared to the Chicago PDB standard for carbon and oxygen isotope ratios, and the correction factors for instrumental effects and for the nature of the mass spectra were derived.
Journal ArticleDOI
Variation of O18 content of waters from natural sources
S Epstein,Toshiko K. Mayeda +1 more
TL;DR: A number of marine water and fresh water samples were examined for the relative O18O16 ratio, and the variation of this ratio was determined to a precision of ± 1% as mentioned in this paper.
Journal ArticleDOI
Effect of Low Concentrations of Carbon Dioxide on Photosynthesis Rates of Two Races of Oxyria.
TL;DR: Alpine plants of Oxyria digyna have higher apparent photosynthesis rates at various carbon dioxide concentrations than arctic, sea-level plants of the same species, which may be involved in the survival of plants at high elevations.