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[report整理] SENEWS-2011-03-21

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[Homework]SENEWS-2011-03-21

homework
This is the VOA special English Technology report.A powerful earthquake struck the northeastern coast of Japan at 2:46 pm local time on *.Japan's  media relogically angency released its first tsunami warnings just three minutes later.The country has one of the best earthquake early warning systems in the world.There are more than 4000 ** intenstive meters in place throughout Japan to mesure earthquake activity.These meters provide information within 2 minutes serving earthquake happening.Information about the strength and the center of the earthquake can be learned within 3 minutes.There are also concrete save-walls around much of the Japanese coast land,but these measures proved no match for the powerful earthquake and tsunami.** is a tsunami expert,with the department of the * and  enviromental engineering,and the university of * Carlifornia in Los Angeles.Japan is one of the most well be ** earth essential in tsunami warnings,they had warning,but I think,what was ******.he says there are two reasons for this:Japan has not had any event,anywhen near as  biggest this one in the last one hundred and fifty years.And scientists had not expected such a large earthquake happening of the coast of Japan.The *** earthquake was the force most powerful earthquake every recorded worldwide.It was also the worst earthquake ever to hit Japan.The tsunami waves the followed were reported to rich its high at 30 meters in some areas.** says Japan's concrete save-walls will not build the **,such high waves.because the save-walls in many places in Japan about center-meters **,******. A tsunami wave can travel as fast as 800 kilometers per hour,to get a higher ground,people would often have the travel for many kilometers,this can take more time than a fast travelling tsunami little bit.This is the especially true in cases like Japan where the center of the earthquake stuck so close to the coast land.The tsunami waves followed almost immediately.Experts say early warning systems will continue to be limited by this facts until earthquakes and tsunamis can be predicted.And this is the VOA Special English Technology Report.









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