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【Earth&Sky】气候变暖,哪座冰川先融化?
听力简介:
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Donald Blankenship: In a world of global change, of a warming climate, which ice sheets are likely to go off first?
You are listening to research scientist Donald Blankenship at the Institute for Geophysics at the University of Texas. He is working to understand how ice sheets [-----1-----] to climate change. Since the late 1970’s, he’s been studying the ice sheets in Antarctica using an airborne [-----2-----]. He told EarthSky that certain ice sheets are more susceptible than others to melting.
Donald Blankenship: In particular, the ones that have their bottoms below sea level. In other words, if the ice went away, the ocean would rush in and fill in behind them. They call them marine ice sheets. [-----3-----] And that’s our big concern.
Since 2008, Blankenship has been [-----4-----] the East Antarctic ice sheet – more than a third of which is below sea level. Blankenship estimates that the ice within this ice sheet has the potential to raise global sea level by 60 meters, or 200 feet.
Donald Blankenship: We have one last great ice sheet – it’s the East Antarctic ice sheet. We don’t know what its future implies for us. So these great ice sheets may be at the end of the earth, but they’re much more important than their distance [-----5-----].
You’ve been listening to research scientist Donald Blankenship, and I am Deborah Byrd from E&S, a clear voice for science. We are at E&S. org.
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