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Updated: Apr 15, 2026

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Using Generative Art to Convey Past and Future Climate Transitions
Published on: March 31, 2023
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アイスシートです. 南極の氷棚からの体積損失は加速しています
Fernando S Paolo1, Helen A Fricker2, Laurie Padman3
1Scripps Institution of Oceanography, University of California, San Diego, CA, USA. fpaolo@ucsd.edu.
まとめ
南極の氷棚は急速に体積を失い,海への氷の放出を加速しています. 衛星データは,特に西南極で,海面上昇の将来を脅かす,重要な薄めを明らかにしています.
科学分野:
- 氷河学と気候科学
- 地球観測とリモートセンシング
背景:
- 浮遊する氷棚は,重要な支柱として機能し,海に接着した氷の流れを遅らせます.
- アイスシェルフの薄くなると,この補強効果が減り,氷の排出が増加し,海面が上昇する可能性があります.
研究 の 目的:
- 南極の氷棚の厚さと量の10年規模の変化を定量化するために.
- 18年間の氷の減少の加速と地域の変動を評価する.
主な方法:
- 18年間の連続した衛星レーダー高度計観測を活用した.
- 南極大陸の氷床の厚さの10年規模の変化を計算した.
主要な成果:
- アイスシェルフの平均体積損失は,25 ± 64 km3/年 (1994-2003) から310 ± 74 km3/年 (2003-2012) に大幅に加速しました.
- 西南極の氷棚の損失は,過去10年間で約70%増加しました.
- 東南極の氷棚は,体積増加から減少へと移行した; アムンセンとベルリングハウゼン地域のいくつかの棚は,最大18%の厚さを失った.
結論:
- 南極の氷棚は,加速した体積損失を経験しており,弱体化している支柱効果を示しています.
- 観測された変化,特に南極西部の変化は,世界の海面への潜在的な影響を持つ重要な変化を意味しています.
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