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這座冰川已有20萬(wàn)年歷史卻屬于“年輕”一族是世界上少數活著(zhù)的冰川

2018-11-08 06:35來(lái)源：深圳新聞網(wǎng)

深圳新聞網(wǎng)訊位于阿根廷和智利南部邊界的莫雷諾冰川，是世界上少數活著(zhù)的冰川。那里匯聚了幾十條冰流，有20層樓之高，綿延30公里。李仁奇攝

雖然它形成的歷史已達20萬(wàn)年，但在冰川界尚屬“年輕”一族。它似一堵巨大的“冰墻”，每天以30厘米的速度向阿根廷湖推進(jìn)。李仁奇攝

1988年之前，每四年才發(fā)生一次"崩潰"現象，因為大氣污染溫度上升，每20分鐘就"崩潰"一次，有人說(shuō)是它是大氣污染指數的警鐘。夏天氣溫平均10到17攝氏度。冬天最冷可至零下17度。李仁奇攝

莫雷諾冰川的一段呈冰堤狀，冰堤把冰川與正對面的麥哲倫半島連接起來(lái)。隨著(zhù)流水滲透沖刷，冰堤下部最終會(huì )形成一個(gè)拱門(mén)。當拱門(mén)上方的冰墻漸漸支撐不住時(shí)，便會(huì )轟然崩塌。李仁奇攝

莫雷諾冰川李仁奇攝

莫雷諾冰川李仁奇攝

莫雷諾冰川李仁奇攝

莫雷諾冰川李仁奇攝

莫雷諾冰川李仁奇攝

[責任編輯：李曉蕾]

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