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总结
多家媒体援引NASA及卫星观测称,曾被认为是世界最大冰山的A23a在南极附近海域漂流约40年后进入快速消亡阶段。1月中旬发布的最新影像显示,其表面出现明亮的蓝色“糊状”质地,报道将其归因于融水渗入、改变冰体结构与散射特征所致,同时冰山边缘不断崩解碎裂,整体已被描述为“接近完全解体”。相关进展被视为理解大型冰山融化与解体机制的直观案例。
正文
Mega-iceberg A23a, formerly the world's largest, turns into bright 'blue mush' as it finally dies after 40 years at sea Live Science 40-Year-Old Iceberg Turns Vivid Blue as It Approaches Total Disintegration ScienceAlert Meltwater Turns Iceberg A-23A Blue NASA Science (.gov) Massive iconic iceberg turns blue and is "on the verge of complete disintegration," NASA says CBS News Satellite sees 40-year-old iceberg melt, turn blue photo of the day for January 12, 2025 Space
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