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Updated: Jul 26, 2026

08:23
Seawater Sampling and Collection
Published on: June 17, 2009
古代海洋における硫酸塩濃度の校正
Kirsten S Habicht1, Michael Gade, Bo Thamdrup
1Danish Center for Earth System Science and Institute of Biology, University of Southern Denmark, Campusvej 55, DK-5230, Odense M, Denmark.
まとめ
古代の海洋硫酸塩濃度は非常に低い (<200マイクロM) であり,初期の地球に影響を与えた.
科学分野:
- 地質化学 地質化学
- 古代気候学 (paleoclimatology) とは,古代気候学 (paleoclimatology) とは,古代気候学 (paleoclimatology) とは,古代気候学 (paleoclimatology) とは,古代気候学 (paleoclimatology) とは
- 微生物学 微生物学とは
背景:
- 海洋硫酸塩貯蔵庫の大きさは,地球の歴史を通じて増加してきました.
- 大気中の酸素の蓄積は,海洋硫酸塩貯蔵庫の大きさに関連しています.
研究 の 目的:
- 古代の海洋硫酸塩濃度を測定するために.
- 早期の硫酸塩レベルが炭素循環に及ぼす影響を理解する.
主な方法:
- 硫黄同位体の分割実験を硫酸縮小細菌 (海水と淡水) に行いました.
- 硫黄の同位体記録の分析. 硫黄の同位体の記録の分析.
主要な成果:
- 古代の海洋硫酸塩濃度は200マイクロM未満でした.
- これは,以前に推定された水準と現在の水準より大幅に低い.
- 低硫酸塩濃度は,硫酸塩の還元率を抑制した.
結論:
- 二酸化硫黄 (SO2) の火山による放出ガスは,アーケイア時代の低硫酸塩レベルを維持した.
- 抑制された硫酸塩還元は,メタノゲネシスが支配する炭素循環を好む.
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