過去300万年の気候と海面との関連
Kurt Lambeck1, Tezer M Esat, Emma-Kate Potter
1Research School of Earth Sciences, Australian National University, Canberra 0200, Australia.
Nature
|September 13, 2002
まとめ
地球 地球 地球 地球 地球 地球
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
- 海洋学 海洋学とは
- 氷河学 氷河学とは
背景:
- 地球の気候は,何百万年もの間,氷河期と氷河間期の間に振動してきました.
- これらの気候変動は,氷床と海洋の間で大規模な水の移転を伴う.
研究 の 目的:
- 最後の氷河期最大期以降の海面の変化を分析する.
- 急速な海面変動を誘発する複雑な相互作用を理解する.
主な方法:
- 古代気候データの分析.
- 氷床の再構築と海洋の体積の変化.
- 地球システム相互作用のモデリング.
主要な成果:
- 最後の氷河期最大期以来,約5000万立方キロメートルの氷が溶けました.
- この溶融により,世界の海面が約130メートル上昇した.
- 大気,海洋,氷床,そして固い地球の複雑な相互作用は,海面の変化に影響を与えます.
結論:
- 天文学的強制力 (太陽照射の変化) は,おそらく海面の変動を引き起こしている.
- 地球のシステム内の内部フィードバックサイクルは,直接的な因果関係を複雑にします.
- 急速な海面の変化は,複雑な地球システム動態の結果である.
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