世界海面変化のファネロゾイク記録
Kenneth G Miller1, Michelle A Kominz, James V Browning
1Department of Geological Sciences, Rutgers University, Piscataway, NJ 08854, USA. kgm@rci.rutgers.edu
まとめ
地球の海水位は過去1億年にわたって大幅に変動し,地球の気候と氷床の動態の大きな変化を反映しています. これらの変化は海洋化学と植物プランクトンの進化に影響を与えた.
科学分野:
- 地質学 地質学 地質学
- 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
- 海洋学 海洋学 海洋学
背景:
- ファネロゾイク期の海面の変化は,地球の動的歴史に関する重要な洞察を提供します.
- 長期の海面変動を理解することは,過去の気候と地質学的プロセスを再構築するための鍵です.
研究 の 目的:
- 複数の時間スケールにおけるファネロゾイク海面の変化をレビューする.
- 過去1億年の新たな高解像度海面記録を提示するためです.
- 海面,気候,地質学的要因との関係を調査する.
主な方法:
- 既存の海平面データの収集と分析.
- 過去1億年の新しい海平面曲線の開発.
- 海水位データと酸素同位体記録と気候プロキシの相関.
主要な成果:
- 海水位は白亜時代に100+/- 50メートルでピークに達し,海殻の生産率が低いことを示唆しています.
- 海面の変動は,より短い時間スケールでの氷の量変化と,より長い時間スケールでの温度変化と相関しています.
- 過去1億年は,短命な南極の氷床から,北半球の大規模で変動する氷床への移行を示しています.
結論:
- 海面の変化は,地球規模の気候の進化と地質学的な活動と密接に関連しています.
- これらの海平面の動態は,海洋化学,沈殿物の堆積,海洋生物に大きな影響を与えた.
- 新しい海面記録は,ケノゾイク期における地球の気候の歴史の精密な理解を提供します.
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