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
More filters
Journal ArticleDOI
Oxygen and hydrogen isotope geochemistry of Cretaceous bentonites and shales from the Disturbed Belt, Montana
Eric Eslinger,Hsueh-Wen Yeh +1 more
TL;DR: In this article, the mineralogy and isotopic properties of 22 Cretaceous bentonites and 14 adjacent shales collected from outcrops in the Sweetgrass Arch and Disturbed Belt, Montana, have been determined.
Journal ArticleDOI
Hydrograph separation of the amazon river using 18o as an isotopic tracer
Jefferson Mortatti,Jorge Marcos de Moraes,J.C. Rodrigues,Reynaldo Luiz Victoria,Luiz Antonio Martinelli +4 more
TL;DR: In this article, the 18O content of rain and river waters was used as an isotopic tracer in order to carry out the hydrograph separation of the Amazon river, during the 1973-1974 hydrological years, and to estimate the contributions of the surface runoff (event water) and baseflow (pre event water) components to the total river flow.
Book ChapterDOI
Theoretical and Experimental Principles
TL;DR: Isotopes are atoms whose nuclei contain the same number of protons but a different number of neutrons as mentioned in this paper, and the term is derived from Greek (meaning equal places) and indicates that isotopes occupy the same position in the periodic table.
Journal ArticleDOI
Run-off analyses using isotopes and hydrochemistry in Yushugou River basin, eastern Tianshan Mountains
TL;DR: Yushugou River basin of East Tianshan Mountains receives water from melting glaciers as discussed by the authors, and the relation of water bodies based on hydrochemistry and isotope in the summer flood was carried out.
Journal ArticleDOI
Hydro-biogeochemical processes of surface water leakage into groundwater in large scale karst water system: A case study at Jinci, northern China
TL;DR: Wang et al. as mentioned in this paper collected surface and ground water and multiple isotopic tracers were integrated with hydrogeochemical parameters to characterize the residence time, recharge history, biogeochemical processes, surface leakage and anthropogenic influences in Jinci karst system.
References
More filters
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.