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
administrative readjustment
alaudidaes
arshile gorky
Balagne
Biver
Bulzi
buzzes in
cardmember
castlemaine
certified instrument
colletotrichum rhoinum tassi
complection
concentrate feed
configuration data control
constrained kinematic chain
consummateth
continuous casting
curly-haired
cutaway dive
depth-chargeds
Dictyoclostus
Domodossola
doxing
El Higuerón
electrically-operated platform truck
erosion mountains
erythroblastotic
erythropoeisis
feeler spring pin
Finucane Ra.
fix point
garment leather
generator unit stator
gourlie
greywacke schist
H.D.L.W.
hartnell
herdmate comparison
high volume sampler
hollow packing
hoogenband
humetted
incisiver suture
inviters
language data
line frequency generator
link-local address
long-term government bonds
Länsi-Suomen Lääni
marine atmosphere corrosion-resisting structural steel
maritime buoyage system agreement
methylone
middleburgh
mindelo
Mošnov
nanningensis
non-pensionable supplements
nondeterministic finite automation
Orthosiphon spicatus
overrunner
Parophidion
perfumes
pilosis
plaster jeckets
Podkarpackie
posthabit
power-downs
presidentiables
proportional intensifier
pyridizin
pyrometric cone equivalent value
rail cambering machine
regular surface gauge
Roundwood Res.
scarlatina latens
shanghaiing
skin irritation assay
spaghetti strap
St. Gervasius' disease
stantly
steam turbine rotor
strong gluten
subfamily Triglinae
Sud, Pte.
thalamic medullary stria
the shakes
thermometer dial
thoracispinal
three-dimensional model
timeframes
tractor mounted
transposition pin
Tyssedal
u-tube hydrometer
ulcerable
vault money
Wanner optical pyrometer
water-carrying
wavelength spectrometer
whelping
yekke
yellow globe lily