globalchange  > 气候变化与战略
DOI: 10.5194/tc-14-1311-2020
论文题名:
Brief Communication: The reliability of gas extraction techniques for analysing CH4 and N2O compositions in gas trapped in permafrost ice wedges
作者: Yang J.-B.; Ahn J.; Iwahana G.; Han S.; Kim K.; Fedorov A.
刊名: Cryosphere
ISSN: 19940416
出版年: 2020
卷: 14, 期:4
起始页码: 1311
结束页码: 1324
语种: 英语
英文关键词: detection method ; gas production ; methane ; microbial activity ; nitrous oxide ; permafrost ; Alaska ; Siberia ; United States
英文摘要: Methane (CH4) and nitrous oxide (N2O) compositions in ground ice may provide information on their production mechanisms in permafrost. However, existing gas extraction methods have not been well tested. We tested conventional wet and dry gas extraction methods using ice wedges from Alaska and Siberia, finding that both methods can extract gas from the easily extractable parts of the ice (e.g. gas bubbles) and yield similar results for CH4 and N2O mixing ratios. We also found insignificant effects of microbial activity during wet extraction. However, both techniques were unable to fully extract gas from the ground ice, presumably because gas molecules adsorbed onto or enclosed in soil aggregates are not easily extractable. Estimation of gas production in a subfreezing environment of permafrost should consider such incomplete gas extraction.. © 2020 Royal Society of Chemistry. All rights reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/164632
Appears in Collections:气候变化与战略

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作者单位: School of Earth and Environmental Sciences, Seoul National University, Seoul, South Korea; International Arctic Research Center, University of Alaska, Fairbanks, United States; Melnikov Permafrost Institute, Russian Academy of Science, Yakutsk, Russian Federation; North-Eastern Federal University, Yakutsk, Russian Federation; Laboratoire des Sciences du Climat et de l'Environnement, LSCE/IPSL, CEA-CNRS-UVSQ_aor4 Université Paris-Saclay, Gif-sur-Yvette, France; Division of Earth and Planetary Materials Science, Department of Earth Science, Graduate School of Science_aor4 Tohoku University, Sendai, Japan

Recommended Citation:
Yang J.-B.,Ahn J.,Iwahana G.,et al. Brief Communication: The reliability of gas extraction techniques for analysing CH4 and N2O compositions in gas trapped in permafrost ice wedges[J]. Cryosphere,2020-01-01,14(4)
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