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Updated: Dec 10, 2025

Laser-Induced Fluorescence Emission L.I.F.E. as Novel Non-Invasive Tool for In-Situ Measurements of Biomarkers in Cryospheric Habitats
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Laser-Induced Fluorescence Emission L.I.F.E. as Novel Non-Invasive Tool for In-Situ Measurements of Biomarkers in Cryospheric Habitats

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南極の氷棚が,融水による破裂に脆弱である

Ching-Yao Lai1, Jonathan Kingslake2,3, Martin G Wearing4

  • 1Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, USA. cylai@ldeo.columbia.edu.

Nature
|August 28, 2020
PubMed
まとめ

大気温暖化により 南極の氷棚は水力破裂によって 崩壊する恐れがあります 新しい研究では 氷床の60%が 溶けた水で浸水し 海面上昇を加速させる可能性があることが 明らかになりました

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Concrete structures in cold climates, such as those along roadsides, can retain moisture. This moisture makes them susceptible to frost-related damage when temperatures fall below freezing. Adding moisture worsens the damage during temperature fluctuations, leading to repeated freezing and thawing. De-icing salts, spread over these structures to melt ice, add to the freeze-thaw cycle, and draw even more moisture into the concrete.
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Mortar joint deterioration is a significant concern in masonry structures, with water accumulation in the joints leading to damage from freeze-thaw cycles. The repeated expansion of water during freezing and its melting during thawing develop and propagate cracks in the masonry joints. Eventually, this leads to the spalling of mortar from the joints, loosening masonry units and weakening the structure. The deteriorated mortar joints are also vulnerable to moisture intrusion into the walls.
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