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Fabrication and Operation of a Nano-Optical Conveyor Belt
Published on: August 26, 2015
氷河期間の第9段階の海洋同位体の軌道強制
C H Stirling1, T M Esat, K Lambeck
1Department of Geological Sciences, University of Michigan, Ann Arbor, Michigan 48109-1063, USA. stirling@erdw.ethz.ch
まとめ
ミランコビッチ軌道強制理論は,古代のサンゴ礁からの新しい海面データによって支持されています. これらの発見は,北半球の太陽照射が氷河間気候を駆動し,古気候の時間スケールを検証することを示唆しています.
科学分野:
- 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
- ジオクロノロジー (Geochronology) について
- 気候科学 気候科学
背景:
- ミランコビッチ軌道強制理論は,古気候年代測定に広く使用されています.
- その有効性は不確実であり,海面記録は過去13万5千年に限られている.
研究 の 目的:
- ミランコビッチの理論を,より古い海平面データを用いて検証する.
- 古代気候記録のより堅固な年代順を確立するために.
主な方法:
- ヘンダーソン島のサンゴ礁のUシリーズ年代測定.
- 海面の高台を分析した.
主要な成果:
- 約63万~33万年前のサンゴ礁を年代付けした.
- これらの日付は,軌道強迫に基づいて予測された海面の高さと一致しています.
結論:
- この発見は,北半球の夏の太陽熱が氷河間気候を誘発するという仮説を裏付けている.
- これは,ミランコビッチ理論を古い古気候記録に適用することを検証する.
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