首页
登录
职称英语
(1) The mystery of the expansion of sea ice around Antarctica, at the same t
(1) The mystery of the expansion of sea ice around Antarctica, at the same t
游客
2023-10-28
35
管理
问题
(1) The mystery of the expansion of sea ice around Antarctica, at the same time as global warming is melting swaths of Arctic sea ice, has been solved using data from U.S. military satellites.
(2) Two decades of measurements show that changing wind patterns around Antarctica have caused a small increase in sea ice, the result of cold winds off the continent blowing ice away from the coastline.
(3) "Until now these changes in ice drift were only speculated upon using computer models," said Paul Holland at the British Antarctic Survey." Our study of direct satellite observations shows the complexity of climate change."
(4) "The Arctic is losing sea ice five times faster than the Antarctic is gaining it, so, on average, the Earth is losing sea ice very quickly. There is no inconsistency between our results and global warming."
(5) The extent of sea ice is of global importance because the bright ice reflects sunlight far more than the ocean, meaning temperature rises still further.
(6) This summer saw a record low in Arctic sea ice since satellite measurements began 30 years ago. Holland said the changing pattern of sea ice at both poles would also affect global ocean circulation, with unknown effects. He noted that while Antarctic sea ice was growing, the Antarctic ice cap—the glacier and snow pack on the continent—was losing mass, with the fresh water flowing into the ocean.
(7) The research on Antarctic sea ice, published in Nature Geoscience, revealed large regional variations. In places where warm winds blowing from the tropics towards Antarctica had become stronger, sea ice was being lost rapidly. "In some areas, such as the Bellingshausen Sea, the sea ice is being lost as fast as in the Arctic," said Holland.
(8) But in other areas, sea ice was being added as sea water left behind ice being blown away from the coast froze. The net effect is that there has been an extra 17,000 sq km of sea ice each year since 1978—about a tenth of a percent of the maximum sea ice cover.
(9) Antarctica is a continent surrounded by an ocean, whereas the Arctic is an ocean surrounded by a continent. For that reason, said Holland, sea ice was not able to expand by the same mechanism in the Arctic as at the southern pole, because if winds pushed the ice away from the pole it quickly hit land.
(10) Holland did the research with Ron Kwok at Nasa’s jet propulsion laboratory in California, where maps of sea ice movements were created from more than 5m individual daily measurements collected over 19 years. The maps showed, for the first time, the long-term changes in sea ice drift around Antarctica.
(11) Kwok said: "The Antarctic sea ice cover interacts with the global climate system very differently than that of the Arctic, and these results highlight the sensitivity of the Antarctic ice coverage to changes in the strength of the winds around the continent." [br] According to what Holland said, we can draw the conclusion that______.
选项
A、we can rely on satellite to estimate changes in ice drift
B、his research results conflict with global warming
C、the location of Bellingshausen Sea is around the Antarctic
D、the Antarctic ice coverage is sensitive to changes in wind strength
答案
C
解析
文章第七段最后一句提到,霍兰德说在某些地方海冰减少的速度和北极一样快,并以别林斯高晋海为例,再根据上一句可知,这些地方是位于南极,在这里从热带地区吹来的暖风变得更强了,所以海冰正在迅速减少,由此推出C项“别林斯高晋海的位置在南极周围”为正确答案。第三段第一句霍兰德提到这些浮冰的变化只能依靠计算机模型来推测,所以A项“我们可以依靠卫星来推测浮冰的变化”与文意不符,故排除;第四段最后霍兰德提到,我们的研究结果和全球变暖并无相矛盾之处,因此B项“他的研究结果与全球变暖相矛盾”与文意相反,故排除;文章的最后一段提到,这些结果突出强调了南极冰盖对南极周围风力变化的灵敏度,但这是罗恩·郭所说的话,故排除D项。
转载请注明原文地址:https://tihaiku.com/zcyy/3136591.html
相关试题推荐
Icaughta_____ofthetaxibeforeitdisappearedaroundthecornerofthestre
Businessschoolsaroundtheglobearefacinga_______shortagewithinthenextd
Didyougetyourpoint_______totheaudienceinthedebate?A、acrossB、aroundC、t
NationalSpellingBeeEveryyear,thebestyoung【T1】______fromaroundth
NationalSpellingBeeEveryyear,thebestyoung【T1】______fromaroundth
NationalSpellingBeeEveryyear,thebestyoung【T1】______fromaroundth
NationalSpellingBeeEveryyear,thebestyoung【T1】______fromaroundth
NationalSpellingBeeEveryyear,thebestyoung【T1】______fromaroundth
NationalSpellingBeeEveryyear,thebestyoung【T1】______fromaroundth
NationalSpellingBeeEveryyear,thebestyoung【T1】______fromaroundth
随机试题
[originaltext]KarenSmithisabuyerforadepartmentstoreinNewYork.De
下列关于气体灭火系统操作和控制的说法中,正确的有()。A.组合分配系统启动
图示悬臂梁和简支梁长度相同,关于两梁的Q图和M图有下述哪种关系? A.Q图和M
给定关系R(A,B,C,D)和S(C,D,E),若关系R与S进行自然连接运算,
当事人不服地方人民法院一审裁定的,应当()。A、自判决书送达之日起15日内向
共用题干 StageFrightFalldownasyoucome
承兑仅限于商业汇票,支票、银行本票、银行汇票均无须承兑。()
下列施工阶段投资控制的主要工作中,属于审核竣工结算款工作内容的是( )。A.审
有限空间作业涉及的行业领域多,不确定危险因素多,今年以来,有关行业领域连续发生多
男,55岁。急性胰腺炎留置中心静脉导管给予全胃肠外营养,突发寒战、高热。诊断考虑
最新回复
(
0
)