时间:2019-01-13 作者:英语课 分类:VOA标准英语2010年(八)月


英语课

More than 300 scientists from 14 countries brought their skills to the Greenland base camp over five summers.


Jim White studies really old ice. He thinks it will help predict what the climate will be like in the future.


 White is director of the Institute of Arctic and Alpine 1 Research at the University of Colorado at Boulder 2 and lead U.S. investigator 3 on the North Greenland Eemian Ice Drilling project or NEEM.


NEEM is about trying to get a good record of the last interglacial period from Greenland 120,000 to 130,000 years ago when Greenland was two to three degrees Celsius 4 warmer than it is today, he says. "And thus it represents our closest analogue 5 in time to where we are going in the future."




NEEM Project

Project leader Dorthe Dahl Jensen holding the final piece of ice extracted from 2537.36 meters.




White is a member of an international team of scientists that, over five years, has drilled 2.5 kilometers to bedrock to extract a 2,500 meter-long ice core in three-to-four meter chunks 6. And once they come up to the surface, he says, "We measure, we log and we match to make sure that we know that we're getting a continuous record."


Scientists calculate greenhouse gas content and air temperature from gases trapped in the ice. And from captured dust, rock and plant material they get a closer look at what Greenland was like before it was covered with snow.




Tim Burton

The very last ice core sample collected from the NEEM project shows bits of rock that were trapped in the ice over 100,000 years ago.




White says during the Eemian period sea level rose approximately five meters. He is uncertain how much of that ice came from Greenland because, he says, "The dynamics 7 of the Greenland ice sheet are not the same as the dynamics of Antarctica, which is our other big source of land ice that can raise or lower sea level."


The fate of Greenland under a warm climate, White says won't be the same as west Antarctica and east Antarctica.


Answers to those questions, he says, can provide decision-makers with information they need to set policy for expected sea level rise given the temperature on the planet. "It makes a big difference whether it is one or five meters," he says.


NEEM ice cores were studied on site and also have been sent to laboratories across the world for analysis. White expects the data to be published early in 2011.



adj.高山的;n.高山植物
  • Alpine flowers are abundant there.那里有很多高山地带的花。
  • Its main attractions are alpine lakes and waterfalls .它以高山湖泊和瀑布群为主要特色。
n.巨砾;卵石,圆石
  • We all heaved together and removed the boulder.大家一齐用劲,把大石头搬开了。
  • He stepped clear of the boulder.他从大石头后面走了出来。
n.研究者,调查者,审查者
  • He was a special investigator for the FBI.他是联邦调查局的特别调查员。
  • The investigator was able to deduce the crime and find the criminal.调查者能够推出犯罪过程并锁定罪犯。
adj.摄氏温度计的,摄氏的
  • The temperature tonight will fall to seven degrees Celsius.今晚气温将下降到七摄氏度。
  • The maximum temperature in July may be 36 degrees Celsius.七月份最高温度可能达到36摄氏度。
n.类似物;同源语
  • The gill of a fish is the analogue of the lung of a cat.鱼的鳃和猫的肺是类似物。
  • But aside from that analogue standby,the phone, videoconferencing is their favorite means of communication.除了备用的相似物电话,可视对话是他们最喜欢的沟通手段。
厚厚的一块( chunk的名词复数 ); (某物)相当大的数量或部分
  • a tin of pineapple chunks 一罐菠萝块
  • Those chunks of meat are rather large—could you chop them up a bIt'smaller? 这些肉块相当大,还能再切小一点吗?
n.力学,动力学,动力,原动力;动态
  • In order to succeed,you must master complicated knowledge of dynamics.要取得胜利,你必须掌握很复杂的动力学知识。
  • Dynamics is a discipline that cannot be mastered without extensive practice.动力学是一门不做大量习题就不能掌握的学科。
学英语单词
-xion
advanced intelligent tape
aft side light
anguilla australis
antioxidase
approach control office
attainor
aurian
available current surplus
back-off compensation
blow-molded container
bottle glorifier
brooksie
carved wooden jewellery box
clonal selection
Crack a nut with a sledgehammer
crawl up
cryosphere
Cumbres de Monterrey National Park
curved mould
de(s)aminase
discrete wired circuits
doand
Eocretaceous
fair point
fencepole
fenice
foeniculum vulgares
fourth-rail insulator
fucus
fuel-charging chamber
gaol
geminal diols
great circle path
hard pine
have a notion that...
hot brittleness test
hydraulically actuated brake
hyper-pre-beta-lipoproteinemia
independent tank
insectator
internal inner ring
Iwo Jima
Japanese medlar
jugendherbergens
kahikatoa
KCMG, K.C.M.G.
lexicostatisticss
lip-reads
loop splice plate
manetta
metal bead
Metriophyllum
molecular momentum exchange
multiprocess special character
myelochroa denegans
Natronkatapleite
naut mi
neutral skin
nonlinear stochastic function
nonwood
Orisha
Osvaldo Cruz
overhead distribution
overthrusts
oxyphonia
parallel diode limiter
Pas.
pecan pies
perforated (paper)tape
Plaimpied-Givaudins
posthumous adoption
pple
rabid
ratherish
reapplied
reception expenses
rubber stop
safe curve speed
saw-grass
seagoing buoy tender
show a fair pair of heels
solid state keyboard
spicy food
stange
stem tube
stufs
superconductive chopper
supply grill
toryhillite
Tschermak
tubular pump-turbine
tumbledryers
tutorial disk
twist the knife
underbackorder
unlight
vent-type injection moulding
weak-to-the-wall
wielders
wooden shoes
Yokjido