為什么南極的冰比北極多（通訊員稿）
[ 2006-10-25 09:09 ]
眾所周知：世界上最冷的地方在兩極，那里常年都被冰雪覆蓋著。兩極相比，南極的冰雪要多一些。同是極地，為什么冰雪覆蓋率會有這么明顯的差異呢？原來，這是有“深”層原因的。什么深層原因呢？就請繼續(xù)往下看吧！
 The
Arctic and Antarctic are the coldest places on Earth, where the wind is strong,
the temperatures are low and everything is covered in snow. The Antarctic is
colder than and has more glaciers than the Arctic because there is land
underneath the Antarctic region. The ability of the region to store heat is
weak. The heat from summer fades quickly, resulting in an average annual
temperature of -56 degrees. In the ocean around the Antarctic, large chunks of
floating ice form huge icebergs.
In contrast most of the Arctic region is covered by
the Arctic Ocean. Since water can absorb more heat and distribute heat more
efficiently than land, the average annual temperature is about 8 degrees.
Therefore there are fewer glaciers in the Antarctic and Greenland. The average
thickness of the ice in the Antarctic is 1,700 meters, and the thickest point is
4,000 meters. The total volume of the Antarctic Glacier is about 28 million
cubic meters. The ice in the Arctic is about two to four meters thick, and the
total number of glaciers in the Arctic is one tenth of that in the Antarctic.
The tip of the Antarctic is one of the world's freshest water resources.
Currently some countries that don't have enough water are trying to find ways to
ship the tip of the Antarctic to places that need water.
（北京林業(yè)大學通訊員黃典鈺供稿 英語點津 Annabel 編輯）
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