南极冰融化速度是40年前的六倍
文章来源:未知 文章作者:enread 发布时间:2019-01-15 02:56 字体: [ ]  进入论坛
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American and Dutch scientists found that yearly ice mass loss in Antarctica increased sixfold in the past 40 years.
 
美国和荷兰的科学家们发现,在过去40年间,南极洲每年损失的冰量增加了六倍。
 
The study published on Monday in the Proceedings1 of the National Academy of Sciences showed the accelerated melting elevated global sea levels more than 1.2 centimeters during 1979 to 2017.
 
It is the longest-ever assessment2 of Antarctic ice mass, covering 176 basins and surrounding islands.
 
The researchers compared snowfall accumulation in interior basins with ice discharge by glaciers3 at their grounding lines.
 
The melting rate increased drastically in the new century. It was an average of 48 gigatons annually4 per decade from 1979 to 2001, but the pace jumped 280 percent to 134 gigatons for 2001 to 2007, according to the study.
 
"As the Antarctic ice sheet continues to melt away, we expect multi-meter sea level rise from Antarctica in the coming centuries," said the paper's lead author Eric Rignot, professor of Earth system science at the University of California, Irvine.


点击收听单词发音收听单词发音  

1 proceedings Wk2zvX     
n.进程,过程,议程;诉讼(程序);公报
参考例句:
  • He was released on bail pending committal proceedings. 他交保获释正在候审。
  • to initiate legal proceedings against sb 对某人提起诉讼
2 assessment vO7yu     
n.评价;评估;对财产的估价,被估定的金额
参考例句:
  • This is a very perceptive assessment of the situation.这是一个对该情况的极富洞察力的评价。
  • What is your assessment of the situation?你对时局的看法如何?
3 glaciers e815ddf266946d55974cdc5579cbd89b     
冰河,冰川( glacier的名词复数 )
参考例句:
  • Glaciers gouged out valleys from the hills. 冰川把丘陵地带冲出一条条山谷。
  • It has ice and snow glaciers, rainforests and beautiful mountains. 既有冰川,又有雨林和秀丽的山峰。 来自英语晨读30分(高一)
4 annually VzYzNO     
adv.一年一次,每年
参考例句:
  • Many migratory birds visit this lake annually.许多候鸟每年到这个湖上作短期逗留。
  • They celebrate their wedding anniversary annually.他们每年庆祝一番结婚纪念日。
TAG标签: Antarctic ice level
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