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(单词翻译:双击或拖选)
Tokyo Prepares As Scientists Predict Big Quake
Earthquake alarms ring at Tokyo's Metropolitan1 Government headquarters, sending workers running for cover. Across the city, workers in another tower block react to a fire alert. It is part of a city-wide drill organized by the government last month.
Japanese scientists are warning the likelihood of a big quake striking Tokyo has increased since the huge temblor and tsunami2 last March in northern Japan.
Shinichi Sakai is from the Earthquake Research Institute at Tokyo University. He said, "When we did the calculations, tectonic activity was up by about six or seven times. At that point in time we established there was a 98 percent chance of a quake within 30 years,or for the next four years, it would likely be 70 percent."
Realistic animated3 models are being used to predict the potential fallout of a large quake on the city, the locations of weaker buildings, fire hazards, and evacuation bottlenecks4.
Official estimates say a 7.3 magnitude quake in Tokyo could cause 11,000 casualties and destroy 850,000 buildings.
At Shimizu Corporation in Tokyo, scientists are working on cutting-edge construction technologies to protect against earthquakes.
One building is supported on hardened rubber dampeners. Other technologies include suspending buildings from a central pillar, which helps to absorb seismic5 shocks; and partially6 floating buildings on water which has been shown to reduce movement significantly.
A chief engineer at Shimizu, Masaaki Saruta, says Tokyo is better prepared than most cities.
"Recently-constructed buildings are strong enough to withstand a big earthquake. Even older buildings in Tokyo have been strengthened," said Saruta. "I won't say there will be no destruction at all, but we are prepared for this. It is still a work in progress. We need more buildings to include seismic isolation7 technology and older ones to be additionally strengthened. But Tokyo will not be annihilated8."
Amateur footage posted online shows skyscrapers9 in Tokyo swaying alarmingly when the Tohoku earthquake struck last March. Saruta says it is part of the design.
"To be honest, I have never seen anything like that so I was really surprised as well," Saruta. "But basically you do not need to worry about a building even if it's swaying. What I mean is, you would expect a tall building to sway like that because of the design."
Last year’s quake, 300 kilometers to the north, shut down much of Tokyo, alerting authorities to prepare for a big earthquake even closer to this huge metropolis10.
1 metropolitan | |
adj.大城市的,大都会的 | |
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2 tsunami | |
n.海啸 | |
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3 animated | |
adj.生气勃勃的,活跃的,愉快的 | |
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4 bottlenecks | |
n.瓶颈( bottleneck的名词复数 );瓶颈路段(常引起交通堵塞);(尤指工商业发展的)瓶颈;阻碍 | |
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5 seismic | |
a.地震的,地震强度的 | |
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6 partially | |
adv.部分地,从某些方面讲 | |
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7 isolation | |
n.隔离,孤立,分解,分离 | |
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8 annihilated | |
v.(彻底)消灭( annihilate的过去式和过去分词 );使无效;废止;彻底击溃 | |
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9 skyscrapers | |
n.摩天大楼 | |
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10 metropolis | |
n.首府;大城市 | |
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