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Updated: Jul 15, 2026

Measuring Carbon-based Contaminant Mineralization Using Combined CO2 Flux and Radiocarbon Analyses
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大気中のCH4に対するデルタ13Cの氷の記録は,若いドライアス-プレボリアス移行期における大気中のCH4の記録である

Hinrich Schaefer1, Michael J Whiticar, Edward J Brook

  • 1School of Earth and Ocean Sciences, University of Victoria, Post Office Box 3055, V8W 3P6, Canada. schaefeh@geo.oregonstate.edu

Science (New York, N.Y.)
|August 26, 2006
PubMed
まとめ

若いドライアスからプレボリアスへの移行期間のグリーンランドからの大気中のメタンの炭素同位体比は,以前より高い天然メタン排出量または以前より強いシンク分化を示唆しています. これは,この古代の気候変化の間に複雑なメタンサイクルがあったことを示しています.

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The probability of having two carbon-13 atoms next to each other is negligible because of the low natural abundance of carbon-13. Consequently, peak splitting due to carbon-carbon spin-spin coupling is not observed in spectra. However, protons up to three sigma bonds away split the carbon signal according to the n+1 rule, resulting in complicated spectra.
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