On the concentrations of O2, N2, and Ar in trapped gases from ice cores

M. Bender; T. Sowers; V. Lipenkov

doi:10.1029/94jd02212

On the concentrations of O₂, N₂, and Ar in trapped gases from ice cores

M. Bender, T. Sowers, V. Lipenkov

Earth and Environmental Systems Institute

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Abstract

Data is presented on the relative concentration and isotopic composition of O₂, N₂, and Ar in gases trapped in bubbles of polar ice. O₂/N₂ and Ar/N₂ ratios are generally lower than the atmospheric values, with O₂ depletions greater than those of Ar. In samples whose O₂/Ar/N₂ ratios are highly anomalous with respect to modern air, δ¹⁸O of O₂ may be enriched by 0.1-0.2‰. There is no indication that δ¹⁵N of N₂ is enriched by gas loss processes in any of the samples we have studied. Our data suggest that anomalies in the composition of air in bubbles with respect to the modern atmosphere are due to gas loss from ice during and after coring. -from Authors

Original language	English (US)
Pages (from-to)	18,651-18,660
Journal	Journal of Geophysical Research
Volume	100
Issue number	D9
DOIs	https://doi.org/10.1029/94jd02212
State	Published - Jan 1 1995

All Science Journal Classification (ASJC) codes

Geophysics
Forestry
Oceanography
Aquatic Science
Ecology
Water Science and Technology
Soil Science
Geochemistry and Petrology
Earth-Surface Processes
Atmospheric Science
Earth and Planetary Sciences (miscellaneous)
Space and Planetary Science
Palaeontology

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10.1029/94jd02212

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title = "On the concentrations of O2, N2, and Ar in trapped gases from ice cores",

abstract = "Data is presented on the relative concentration and isotopic composition of O2, N2, and Ar in gases trapped in bubbles of polar ice. O2/N2 and Ar/N2 ratios are generally lower than the atmospheric values, with O2 depletions greater than those of Ar. In samples whose O2/Ar/N2 ratios are highly anomalous with respect to modern air, δ18O of O2 may be enriched by 0.1-0.2‰. There is no indication that δ15N of N2 is enriched by gas loss processes in any of the samples we have studied. Our data suggest that anomalies in the composition of air in bubbles with respect to the modern atmosphere are due to gas loss from ice during and after coring. -from Authors",

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T1 - On the concentrations of O2, N2, and Ar in trapped gases from ice cores

AU - Bender, M.

AU - Sowers, T.

AU - Lipenkov, V.

PY - 1995/1/1

Y1 - 1995/1/1

N2 - Data is presented on the relative concentration and isotopic composition of O2, N2, and Ar in gases trapped in bubbles of polar ice. O2/N2 and Ar/N2 ratios are generally lower than the atmospheric values, with O2 depletions greater than those of Ar. In samples whose O2/Ar/N2 ratios are highly anomalous with respect to modern air, δ18O of O2 may be enriched by 0.1-0.2‰. There is no indication that δ15N of N2 is enriched by gas loss processes in any of the samples we have studied. Our data suggest that anomalies in the composition of air in bubbles with respect to the modern atmosphere are due to gas loss from ice during and after coring. -from Authors

AB - Data is presented on the relative concentration and isotopic composition of O2, N2, and Ar in gases trapped in bubbles of polar ice. O2/N2 and Ar/N2 ratios are generally lower than the atmospheric values, with O2 depletions greater than those of Ar. In samples whose O2/Ar/N2 ratios are highly anomalous with respect to modern air, δ18O of O2 may be enriched by 0.1-0.2‰. There is no indication that δ15N of N2 is enriched by gas loss processes in any of the samples we have studied. Our data suggest that anomalies in the composition of air in bubbles with respect to the modern atmosphere are due to gas loss from ice during and after coring. -from Authors

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JO - Journal of Geophysical Research: Atmospheres

JF - Journal of Geophysical Research: Atmospheres

IS - D9

ER -

On the concentrations of O₂, N₂, and Ar in trapped gases from ice cores

Abstract

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