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科学美国人60秒:飓风范围扩大-托福听力下载

2017-01-18 14:01:00来源：科学美国人60秒

点击查看>>科学美国人60秒音频：飓风范围扩大

　　科学美国人60秒中英文翻译：飓风范围扩大

　　科学美国人60秒英文文本

　　They're technically called tropical cyclones.

　　But these powerful storms are better known as hurricanes in the U.S. and typhoons in Asia.

　　The violent weather systems wreak havoc on coastlines and islands in tropical areas, as the name implies.

　　But it looks like tropical cyclones may be moving into areas not currently considered tropical, when the storms reach maximum strength.

　　That's according to a study in the journal Nature.

　　飓风.jpg

　　Researchers looked at the global record of tropical cyclones since the 1970s.

　　That's when such storms started to be reliably monitored by satellites.

　　Using those data, the researchers pinpointed the place on the globe where each storm reached its maximum intensity.

　　The record reveals that peak cyclone location has been shifting toward both poles at a rate of about 35 miles per decade, roughly one-half a degree of latitude.

　　Of course, tropical zones themselves are expanding.

　　And the researchers suggest the cyclone shift may be linked to that growth, which is connected to more heat-trapping greenhouse gases in the atmosphere as a result of human activity.

　　All of which means that new regions will be at risk for stronger storms as tropical cyclones spread to higher latitudes.

　　中文翻译请点击下一页

本文关键字: 科学美国人60秒 科学60秒下载 托福听力

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