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[report整理] SENEWS-2011-03-21

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[Homework]SENEWS-2011-03-21

This is the VOA special English tecnology report.
A powerful earthquake struck the northeasten coast of Japan at 2:46pm local time on March 11th.Japan's media relargical angency relist its first tunami warnings just three minutes later.The country has one of the best earthquake early-warning systems in the world.There are more than 4000 sesmic intencity meters in place thoughtout Japan to major earthquake activity.These meters provide imformation within 2 minutes - earthquake happening.Imformation about the strength and center of the earthquake can be learned within 3 minutes.There were also - seawars around  much of the Japanese's coastal line. But these majors proved no match for the powerful earthquake and tunami.CS is a tunami expert with department of civil and environmental engirneering at the university of SOUTHERNCALIFORNIA in Losan. Japan is one of the most well-prepared countries on earth in- in tunami warnings. They had warning ,I think,what was - is they had not dis---- He says there are two reasons for this.Japan had not had any event any - as big as this one in last 1500 years.And scientist had not expected such a large earthquake happening of the coast of Japan. The 9.0 magnitude was the 4th most powerful earthquake ever recorded worldwide.It was the worst earthquake ever to hit Japan.The tunami wives that followed were reported to have reached as high as 13 meters in some areas.Coastal S says Japans can creat seawalls when not built to handle such high wives.-36 feet ,In the Sadai -,so that's they were not expecting such size of wive.A tunami wive can traval as fast as 800kilometers per hour.To get to a higher ground,people was offen have to traval for many kilometers.This can take more time than the fast travalling tunami will permit.This is especially ture in cases like Japan where the center of the earthquake struck so close to the coast line.The tunami wives followed almost immedietly.Expertors say early-warning system will continue to be limited by this facts until earthquakes and  tunamis can be predicted.


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