最大的冰库

编者:物理学者 来源:最有料 时间:2014-12-15 18:17 最签:最大 浏览:

在地球的最南端,有一块常年为冰雪覆盖的陆地,连同附近的岛屿在内,总面积约为1400万平方千米,这就是地球上最大的冰库所在地一一南极洲。白茫茫的冰原覆盖着南极洲面积的937。

  在地球的最南端,有一块常年为冰雪覆盖的陆地,连同附近的岛屿在内,总面积约为1400万平方千米,这就是地球上最大的“冰库”所在地一一南极洲。白茫茫的冰原覆盖着南极洲面积的937。以上,冰层的平均厚度约为1700米,最厚的地方达4200米,冰的总储量为2450万立方千米之巨,占世界淡水资源量的707。,为世界上最大的冰库。冰盖中心海拔高度为4200米,受冰盖本身的巨大压力和地形影响,巨大的冰体从大陆高处滑向边缘,成为冰山,漂泊在海洋上。 南极洲之所以会变成巨大的“冰库”,主要是由于地处高纬,极大部分位于南极圈之内。夏半年虽有几个月是白昼,但太阳只是在地平线上盘旋,太阳光斜射,所获能量极少;冬半年则随着昏暗长夜的来临,太阳隐没在地平线之下。At the southernmost tip of the earth, there is a year for the snow covered land,together with the nearby islands, a total area of about 14000000 square kilometers, which is the largest on earth "icehouse" where one one of antarctica.White ice covers Antarctica area 937. Above, the average ice thickness is about 1700 meters, the thickest place up to 4200 meters, the total reserves of24500000 cubic kilometers of ice is huge, accounting for 707 of the amount offreshwater resources of the world. As the world's largest, freezer. Ice Center altitude of 4200 meters, under enormous pressure and the topographic influenceice sheet itself, a huge ice from the mainland high slide toward the edge, asicebergs floating on the sea. Antarctica was to become a huge "icehouse", mainly due to is located in high latitudes, in great part within the Antarctic circle. Summer half year although there are a few months is the day, but the sun only hoveringon the horizon, the sun dipped, received far less energy; winter half year with thedark night coming, the sun disappeared below the horizon.

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