jimmyspring

This is the VOA Special English Technology Report. A powerful eathquake struck the Northeastern coast of Japan at two forty six pm local time on March eleventh. Japan's media relogical* agency 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 four thousand science make intensity meters in place throughout Japan to measure earthquake activity. These metres provide information within two minutes of an earthquak happening. Information about the strength and the centre of the earthquake can be learned within three minutes.
There are also concrete sea wars around march of the Japanese coastline. But these measures proved no much for the powerful earthquake and tsunami. Casta*Seanalecis is a tsunami expert with the department of civil and environmental engineering at the University of Southern California in Los Angeles. Japan is one of the most well be bird* cont* in the earth intencial* in the tsunami warnings, they had warning that I think what was wrong they have no disabeyed you know this time is sevent* He says there are two reasons for this.
Japan has not had any event any when near as big as this one in the last one hundred fifty years. And scientists had not expected such a large earthquake happening off the coast of Japan.
The nine point zero magnitude earthquake was the first most powerful earthquake every recorded worldwide. It was also the worst earthquake ever to hit Japan.
The tsunami waves that followed were reported to a reached as high as thirteen meters in some areas. Casta*Senolecs says Japan's concrete sea walls were not built a hundle such high waves. The con* in many place of Japan about center metres that's about thirty-three meter feet. In the Sendai there was about three metres that about than* feet. So that's all used at leasting area not expecting a sound side waves.
A tsunami wave can travel as fast as eight hundred kilometers per hour. To get a higher ground, people would often have to travel many kilometres. This can take more time than a fast traveling tsunami will permit. This is especially true in cases like Japan where the center of earthquake struck so close to the coastline. The tsunami waves followed almost immediately. Experts say early warning systems will continue to be limited by these fast until earthquakes and tsunamies can be predicted. And that's the VOA Special English Technology report written by June Sinnce. You can find more news about the disaster in Japan at our website voaspecialenglish.com. You can also find transcripe, mp3s, and podcasts of our reports, and you can find us on Facebook and Youtube at voalearningenglish. I'm Steve Ember.

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