www射-国产免费一级-欧美福利-亚洲成人福利-成人一区在线观看-亚州成人

English 中文網 漫畫網 愛新聞iNews 翻譯論壇
中國網站品牌欄目(頻道)
當前位置: Language Tips > Special Speed News VOA慢速

Japan's early warning system one of the best in the world

[ 2011-03-22 14:25]     字號 [] [] []  
免費訂閱30天China Daily雙語新聞手機報:移動用戶編輯短信CD至106580009009

Japan's early warning system one of the best in the world

This is the VOA Special English Technology Report.

A powerful earthquake struck the northeastern coast of Japan at 2:46 p.m. local time on March 11th. Japan's Meteorological 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 4,000 Seismic Intensity Meters in place throughout Japan to measure earthquake activity. These meters provide information within two minutes of an earthquake happening. Information about the strength and the center of the earthquake can be learned within three minutes.

There are also concrete sea walls around much of the Japanese coastline. But these measures proved no match for the powerful earthquake and tsunami.

Costas Synolakis is a tsunami expert with the Department of Civil and Environmental Engineering at the University of Southern California in Los Angeles.

COSTAS SYNOLAKIS: "Japan is one of those most well-prepared countries on earth in terms of tsunami warning. They had a warning. I think what went wrong is that they had not anticipated the size of this event."

He says there are two reasons for this. Japan has not had any event anywhere near as big as this one in the last 150 years. And scientists had not expected such a large earthquake happening off the coast of Japan.

The 9.0 magnitude earthquake was the 4th most powerful earthquake ever recorded worldwide. It was also the worst earthquake ever to hit Japan. The tsunami waves that followed were reported to have reached as high as 13 meters in some areas.

Costas Synolakis says Japan's concrete sea walls were not built to handle such high waves.

COSTAS SYNOLAKIS: "The concrete seawalls in many places in Japan are about ten meters, that's about 33 feet. In Sendai, they were about three meters, that's about ten feet. So that shows you that at least in that area they were not expecting such a sizeable wave because they would have built a higher seawall."

A tsunami wave can travel as fast as 800 kilometers per hour. To get to higher ground people would often have to travel for many kilometers. This can take more time than a fast traveling tsunami will permit. This is especially true in cases like Japan, where the center of the 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 facts until earthquakes and tsunamis can be predicted.

And that's the VOA Special English Technology Report, written by June Simms. You can find more news about the disaster in Japan at our website, voaspecialenglish.com. You can also find transcripts, MP3s and podcasts of our reports. And you can find us on Facebook and YouTube at VOA Learning English. I'm Steve Ember.

Related stories:

Workers continue efforts to prevent a nuclear disaster in Japan

Many residents from Japan flee to US

Tsunami warnings issued in Pacific From Japan to Peru

Tsunami memories go back to 1933

(來源:VOA 編輯:崔旭燕)

 
中國日報網英語點津版權說明:凡注明來源為“中國日報網英語點津:XXX(署名)”的原創作品,除與中國日報網簽署英語點津內容授權協議的網站外,其他任何網站或單位未經允許不得非法盜鏈、轉載和使用,違者必究。如需使用,請與010-84883631聯系;凡本網注明“來源:XXX(非英語點津)”的作品,均轉載自其它媒體,目的在于傳播更多信息,其他媒體如需轉載,請與稿件來源方聯系,如產生任何問題與本網無關;本網所發布的歌曲、電影片段,版權歸原作者所有,僅供學習與研究,如果侵權,請提供版權證明,以便盡快刪除。
 

關注和訂閱

人氣排行

翻譯服務

中國日報網翻譯工作室

我們提供:媒體、文化、財經法律等專業領域的中英互譯服務
電話:010-84883468
郵件:translate@chinadaily.com.cn
 
 
主站蜘蛛池模板: 日本 片 成人 在线 日本68xxxxxxxxx老师 | 国产一级一片免费播放刺激 | 手机看片1024精品国产 | 日韩精品一区二区三区在线观看 | 全部免费国产潢色一级 | 亚洲欧美激情视频 | 亚洲aⅴ| 国产一级视频在线 | 国产成人精品男人的天堂538 | s8国产成人精品视频 | 久久综合一本 | 日韩免费观看一级毛片看看 | 国产在线视频区 | 久久国产成人精品国产成人亚洲 | 久草新在线观看 | 在线观看中文字幕一区 | 尹人香蕉久久99天天拍 | 美日韩一级 | 国产精品一级毛片不收费 | 久久这里只有精品免费视频 | 亚洲影院在线 | 手机看片国产在线 | 国产综合精品久久亚洲 | 日韩欧美一区二区在线观看 | 午夜日韩视频 | 99久久一区 | 欧美亚洲日本国产综合网 | 成年人在线免费观看视频网站 | 免费一级欧美片在线观免看 | a色毛片免费视频 | 三级免费毛片 | 免费观看毛片视频 | 欧美精品另类 | 我要看一级大片 | 亚洲va在线va天堂va四虎 | 国产成人免费观看 | 成人亚洲在线 | 午夜影院免费体验 | 午夜毛片不卡高清免费 | 日韩一页 | 日韩精品欧美激情国产一区 |