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2016考研英语阅读每日精选：金星上有活跃的火山运动

2015-06-25 15:18:17来源：新东方在线

　　在考研英语中，阅读分数可谓是占到了总分的半壁江山，正所谓“得阅读者得考研”。对于备考2016考研的同学们，在平时的复习中一定要拓展阅读思路，各类话题都要关注，这样才能在整体上提升考研英语阅读水平!新东方在线分享《2016考研英语阅读精选》，一起来学习吧!

　　金星上有活跃的火山运动

　　An international team of scientists has found some of the best evidence yet that Venus, Earth's nearest neighbor, is volcanically1 active. In combing through data from the European Space Agency's Venus Express mission, the scientists found transient spikes2 in temperature at several spots on the planet's surface. The hotspots, which were found to flash and fade over the course of just a few days, appear to be generated by active flows of lava3 on the surface.

　　"We were able to show strong evidence that Venus is volcanically, and thus internally, active today," said James W. Head, a geologist4 at Brown University and co-author of a paper describing the new research. "This is a major finding that helps us understand the evolution of planets like our own."

　　The research is published online in Geophysical Research Letters.

　　The hotspots turned up in thermal5 imaging taken by the Venus Express spacecraft's Venus Monitoring Camera. The data showed spikes in temperature of several hundred degreesFahrenheit6 in spots ranging in size from 1 square kilometer to over 200 kilometers.

　　The spots were clustered in a large rift7 zone called Ganiki Chasma. Rift zones are formed by stretching of the crust by internal forces and hot magma that rises toward the surface. Head and Russian colleague Mikhail Ivanov had previously8 mapped the region as part of a globalgeologic9 map of Venus generated from the Soviet10 Venera missions in the 1980s and U.S. Magellan mission in the 1990s. The mapping work had shown that Ganiki Chasma was quite young, geologically speaking, but just how young wasn't clear until now.

　　"We knew that Ganiki Chasma was the result of volcanism that had occurred fairly recently in geological terms, but we didn't know if it formed yesterday or was a billion years old," Head said. "The active anomalies detected by Venus Express fall exactly where we had mapped theserelatively11 young deposits and suggest ongoing12 activity."


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