ヒマラヤの氷の核からの南アジアのモンスーンの高解像度の千年記録
Thompson1, Yao, Mosley-Thompson
1Byrd Polar Research Center, The Ohio State University, Columbus, OH 43210, USA. Cold and Arid Regions Environmental and Engineering Institute, Chinese Academy of Sciences, Lanzhou China. Department of Geological Sciences, Department of Geography,
Science (New York, N.Y.)
|September 16, 2000
まとめ
チベットの氷芯は,南アジアのモンスーンを明らかにしています.
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
- 氷河学 氷河学とは
- 気候科学 気候科学
背景:
- 氷芯は貴重な古気候記録を提供している.
- チベットの高原は南アジアのモンスーンの変動に敏感です.
研究 の 目的:
- チベットのダスオプの高解像度氷芯記録を使用して,過去の南アジアモンスーンの強度を再構築する.
- 20世紀の人類活動が地域気候に与える影響を調査する.
主な方法:
- チベットのダスオプの氷芯における塵と塩化物の濃度の分析.
- 氷のコアの断面の高解像度の年代測定.
- 歴史的な気候データと地域的な人類活動との比較.
主要な成果:
- Dasuopuの氷芯は南アジアのモンスーンの変動に敏感であり,塵と塩化物のレベルは干ばつの強度を示しています.
- 記録されている中で最も深刻な干ばつが,紀元1790年から1796年の間に発生した.
- 20世紀における塵と塩化物の濃度の大幅な増加は,インドとネパールにおける人為的な活動の増加を反映している.
- 高原全体に広がる20世紀の温暖化傾向の証拠は,より高い標高で増幅され,他のチベットの氷河核と一致しています.
結論:
- Dasuopuの氷芯は,過去のモンスーンの変動性と干ばつイベントの詳細な記録を提供します.
- この地域における20世紀の気候変動は,人間の活動の増加と密接に関連しています.
- チベットの高原は,地域水文学と生態系に影響を及ぼし,増幅された温暖化を経験しています.
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