综合色区无码一区,亚洲综合一区国产精品,日韩亚洲性爱无码视频,国产白丝护士AV在线网站,国产三级视频播放线观看,亚洲五月综合缴情在线观看,aⅴ变态另类天堂无码专区

English 中文網(wǎng) 漫畫網(wǎng) 愛(ài)新聞iNews 翻譯論壇
中國(guó)網(wǎng)站品牌欄目(頻道)
當(dāng)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(hào) [] [] []  
免費(fèi)訂閱30天China Daily雙語(yǔ)新聞手機(jī)報(bào):移動(dòng)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(lái)源:VOA 編輯:崔旭燕)

 
中國(guó)日?qǐng)?bào)網(wǎng)英語(yǔ)點(diǎn)津版權(quán)說(shuō)明:凡注明來(lái)源為“中國(guó)日?qǐng)?bào)網(wǎng)英語(yǔ)點(diǎn)津:XXX(署名)”的原創(chuàng)作品,除與中國(guó)日?qǐng)?bào)網(wǎng)簽署英語(yǔ)點(diǎn)津內(nèi)容授權(quán)協(xié)議的網(wǎng)站外,其他任何網(wǎng)站或單位未經(jīng)允許不得非法盜鏈、轉(zhuǎn)載和使用,違者必究。如需使用,請(qǐng)與010-84883631聯(lián)系;凡本網(wǎng)注明“來(lái)源:XXX(非英語(yǔ)點(diǎn)津)”的作品,均轉(zhuǎn)載自其它媒體,目的在于傳播更多信息,其他媒體如需轉(zhuǎn)載,請(qǐng)與稿件來(lái)源方聯(lián)系,如產(chǎn)生任何問(wèn)題與本網(wǎng)無(wú)關(guān);本網(wǎng)所發(fā)布的歌曲、電影片段,版權(quán)歸原作者所有,僅供學(xué)習(xí)與研究,如果侵權(quán),請(qǐng)?zhí)峁┌鏅?quán)證明,以便盡快刪除。
 

關(guān)注和訂閱

人氣排行

翻譯服務(wù)

中國(guó)日?qǐng)?bào)網(wǎng)翻譯工作室

我們提供:媒體、文化、財(cái)經(jīng)法律等專業(yè)領(lǐng)域的中英互譯服務(wù)
電話:010-84883468
郵件:translate@chinadaily.com.cn
 
 

      <td id="nxi2y"></td>
      <th id="nxi2y"></th>
    1. <big id="nxi2y"><meter id="nxi2y"><thead id="nxi2y"></thead></meter></big>
        <rt id="nxi2y"></rt>
        <ins id="nxi2y"><meter id="nxi2y"><table id="nxi2y"></table></meter></ins>
      1. <noscript id="nxi2y"><tr id="nxi2y"><samp id="nxi2y"></samp></tr></noscript>
        <acronym id="nxi2y"></acronym>
        综合色区无码一区,亚洲综合一区国产精品,日韩亚洲性爱无码视频,国产白丝护士AV在线网站,国产三级视频播放线观看,亚洲五月综合缴情在线观看,aⅴ变态另类天堂无码专区 国产在线拍揄自揄视频网站 国产视频精品免费 少妇系列之白嫩人妻 白眼女网爆韩国网红御姐性爱视频 热闹的背后总有不 日本黄漫画免费播放 亚洲AV日韩Aⅴ中文无码 无码一级视频在线