Fractionation of O2∕N2 and Ar∕N2 in the Antarctic ice sheet during bubble formation and bubble–clathrate hydrate transition from precise gas measurements of the Dome Fuji ice core

• Published in: The Cryosphere
• Main Authors: I. Oyabu, K. Kawamura, T. Uchida, S. Fujita, K. Kitamura, M. Hirabayashi, S. Aoki, S. Morimoto, T. Nakazawa, J. P. Severinghaus, J. D. Morgan
• Format: Article in Journal/Newspaper
• Language: English
• Published: Copernicus Publications 2021
• Subjects: geo; envir; Antarctic; Dome Fuji; The Antarctic; Antarc*; ice core; Ice Sheet; The Cryosphere
• Online Access: https://doi.org/10.5194/tc-15-5529-2021; https://tc.copernicus.org/articles/15/5529/2021/tc-15-5529-2021.pdf; https://doaj.org/article/d0059c1a940546db8ff04f38ad24d920

The variations of δO2/N2 and δAr/N2 in the Dome Fuji ice core were measured from 112 m (bubbly ice) to 2001 m (clathrate hydrate ice). Our method, combined with the low storage temperature of the samples (−50 ∘C), successfully excludes post-coring gas-loss fractionation signals from our data. From t...