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thumbnail 自然奇觀/驚! 南極冰川下驚現「超大隧道」?
Aug 30th 2014, 10:33, by service.nownews@gmail.com (nownews)

大陸新聞中心/綜合報導

英國科學家團隊在南極洲冰原下方,發現幾乎和巴黎艾菲爾鐵塔一樣高的巨大隧道。
 
錢江晚報據英國《每日郵報》報導,來自英國多所大學以及英國南極勘測的研究人員,搭乘飛機飛越西南極洲的菲爾希納龍尼冰棚時,發現了此隧道。此隧道高820英尺(約合250公尺),高度是213英尺的倫敦塔橋的4倍,幾乎趕上987英尺(約300公尺)的艾菲爾鐵塔。

機上雷達和衛星照片揭示,冰原表面的冰脊和洞穴顯示底部存在隧道。科學家先前認為,在冰原下流動的融水,會淺淺地大範圍流動。不過資料顯示,融水在冰原下流動,就像河流般。科學家根據隧道位置推測,很可能是冰棚下的冰塊融化後,融水在冰原下流動,經過陸地再流往海洋,最後形成隧道。

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