久久久无码人妻精品无码_6080YYY午夜理论片中无码_性无码专区_无码人妻品一区二区三区精99

USEUROPEAFRICAASIA 中文雙語Fran?ais
China
Home / China / Society

Quake warning system in the works

By WANG QIAN | China Daily | Updated: 2013-04-27 00:46

Earthquake detection program to provide seconds' notice of disaster

After experiencing heavy casualties and extensive damage in powerful earthquakes since 2008, China is developing a way to give at least a few extra seconds' warning for those near quake epicenters.

Quake warning system in the worksThe system, called the National Earthquake Early Warning and Intensity Quick Reporting System, which will have an estimated cost of about 2 billion yuan ($324 million), is expected to be built before 2017 by the China Earthquake Administration — if the National Development and Reform Commission approves the project this year, the administration said.

The administration said the system will detect earthquake-related shaking that are in the form of P-waves, which move rapidly but are harmless, and which arrive before the more-powerful and destructive shear waves, or S-waves.

"As earthquakes cannot be predicted, getting people to safety quickly before the destructive waves arrive can largely decrease casualties," Li Shanyou, deputy director of the Institute of Engineering Mechanics under the China Earthquake Administration, told China Daily.

He added that the few seconds of warning can also help a train driver slow down to avoid possible derailment, warn a doctor to stop a surgery, give a shutdown signal to chemical factories, prevent potential leaks and fires, and alert officials at critical projects, such as nuclear plants.

Experts estimate that casualties could be reduced by 14 percent with a three-second advance warning of an earthquake, and 39 percent with a 10-second warning.

The program includes the construction of more than 5,000 quake-monitoring stations across the country, guaranteeing every city above county level will have at least one. The system will be in four major areas — northern China, the north-south seismic belt, coastal regions of southeastern China, and northwestern Xinjiang Uygur autonomous region — with a station every 25 km.

Li said if quake stations are about 30 km apart, the early-warning system can issue warning information about 10 seconds after a quake happens below ground.

Detecting P-waves with the system can provide a few precious seconds to people before the powerful S-waves arrive.

"The S-waves generally move at a speed of 3.5 km per second, which means before the warning is issued, S-waves have already spread in a radius of 35 km from the epicenter," he said, adding that the area within the 35-km radius of the epicenter, which is called the "blind area", cannot be warned.

Lushan county in the Ya'an earthquake in Sichuan province was in the blind area, Li said.

The early warning cannot play a role in small quakes, but if it is large with a huge affected area, the system will dramatically reduce damage and lead to fewer deaths, he said.

Related readings:

Live report: 7.0-magnitude quake hits Sichuan

Day of mourning set for quake victims

Sichuan gears up for post-quake rebuilding

Onset of flood season adds to quake zone risks

Premier thanks nations for aid

Expert calls for rational volunteering, donations

Classes resume in quake-hit zone

Red Cross promises transparency in donations

Wenchuan quake experience crucial

Previous Page 1 2 Next Page

Editor's picks
Copyright 1995 - . All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form. Note: Browsers with 1024*768 or higher resolution are suggested for this site.
License for publishing multimedia online 0108263

Registration Number: 130349
FOLLOW US
 
久久久无码人妻精品无码_6080YYY午夜理论片中无码_性无码专区_无码人妻品一区二区三区精99

    青青草伊人久久| 极品少妇一区二区| 欧美日韩夫妻久久| 视频一区欧美精品| 日韩免费看网站| 成人教育av在线| 亚洲女爱视频在线| 在线成人小视频| 国产精品91xxx| 亚洲免费观看高清完整| 欧美嫩在线观看| 国产高清精品久久久久| 亚洲欧洲日本在线| 欧美日韩国产一二三| 国产乱人伦偷精品视频免下载 | 久久久国际精品| 91影院在线免费观看| 日韩电影免费一区| 欧美国产精品一区二区| 色噜噜久久综合| 久久电影网站中文字幕| 国产精品理伦片| 欧美精品乱人伦久久久久久| 国产精品一区二区三区网站| 亚洲另类色综合网站| 日韩免费高清视频| 色综合久久久久综合体桃花网| 日韩va欧美va亚洲va久久| 国产亚洲综合在线| 欧美人伦禁忌dvd放荡欲情| 国产传媒日韩欧美成人| 亚洲与欧洲av电影| 国产亚洲欧洲997久久综合| 欧美亚洲日本国产| 国产精品一区二区免费不卡| 亚洲图片有声小说| 国产精品视频一二| 欧美一区二区三区四区高清| 成人ar影院免费观看视频| 视频一区在线视频| 国产精品伦一区二区三级视频| 欧美精品三级在线观看| 成人免费视频视频| 久久国产精品72免费观看| 亚洲免费av观看| 久久九九99视频| 欧美人与禽zozo性伦| 成人成人成人在线视频| 老司机精品视频线观看86| 亚洲女人****多毛耸耸8| 久久久国产精华| 欧美一区二区三区思思人| 91在线高清观看| 国产电影一区二区三区| 青草国产精品久久久久久| 亚洲丝袜另类动漫二区| 久久久美女艺术照精彩视频福利播放| 欧美丝袜丝交足nylons图片| 成人av电影观看| 国产一区二区三区观看| 日韩成人一级片| 亚洲主播在线观看| 1000精品久久久久久久久| 26uuu精品一区二区在线观看| 欧美日韩性生活| 色婷婷精品久久二区二区蜜臂av | 国产精品对白交换视频 | 精品国产99国产精品| 欧美日韩美少妇| 不卡影院免费观看| 韩国av一区二区三区在线观看| 五月激情综合婷婷| 艳妇臀荡乳欲伦亚洲一区| 中文字幕日韩av资源站| 久久久精品中文字幕麻豆发布| 日韩欧美中文一区二区| 欧美日韩一区二区三区在线 | 久久久精品日韩欧美| 日韩精品一区二| 91精品国产丝袜白色高跟鞋| 欧美日韩在线观看一区二区 | 日本亚洲最大的色成网站www| 一区二区国产视频| 日韩毛片视频在线看| 国产精品免费视频一区| 国产日韩v精品一区二区| 久久亚洲影视婷婷| 精品久久久影院| 日韩免费性生活视频播放| 欧美一个色资源| 日韩欧美一级精品久久| 91精品国产91综合久久蜜臀| 欧美另类z0zxhd电影| 91.成人天堂一区| 欧美精三区欧美精三区| 69av一区二区三区| 欧美精品久久一区二区三区| 欧美丰满少妇xxxbbb| 91精品国产91久久综合桃花| 91精品国产一区二区三区蜜臀| 欧美一区二区视频网站| 91精品国产综合久久久久久 | 日本中文字幕一区| 水蜜桃久久夜色精品一区的特点| 午夜精品影院在线观看| 视频一区免费在线观看| 日本午夜精品一区二区三区电影| 蜜臀av一区二区三区| 奇米色777欧美一区二区| 久久精品国产一区二区三| 国产综合色视频| 国产·精品毛片| a4yy欧美一区二区三区| 色av综合在线| 欧美精品一二三区| 日韩视频一区二区三区| 久久亚洲私人国产精品va媚药| 久久蜜桃av一区二区天堂| 欧美国产精品一区| 亚洲免费av网站| 视频一区二区欧美| 久久精品国产成人一区二区三区| 紧缚奴在线一区二区三区| 国产不卡在线视频| 91丨九色丨黑人外教| 欧美在线播放高清精品| 欧美一区二区三区免费观看视频 | 日韩一区在线免费观看| 亚洲黄色性网站| 午夜视黄欧洲亚洲| 毛片av中文字幕一区二区| 国产成人在线免费观看| 91视频com| 777亚洲妇女| 久久精品在线观看| 亚洲美女视频一区| 日韩国产在线观看| 国产盗摄女厕一区二区三区| 91色.com| 欧美一区二区三区的| 日本一区二区动态图| 亚洲国产综合91精品麻豆| 美女视频网站久久| 丰满放荡岳乱妇91ww| 欧美日精品一区视频| 精品卡一卡二卡三卡四在线| 综合婷婷亚洲小说| 日韩电影免费在线看| 成人深夜视频在线观看| 欧美视频一区二区三区| www国产成人免费观看视频 深夜成人网| 国产精品久久久久久亚洲毛片 | 成人av免费在线播放| 欧美日韩一区二区欧美激情| 精品国产亚洲一区二区三区在线观看| 中文字幕一区二区三区蜜月 | 日韩和的一区二区| 国产成a人亚洲| 欧美日韩日日夜夜| 国产欧美日韩在线| 午夜精品久久久久久久久久久 | 色菇凉天天综合网| 精品国产免费人成电影在线观看四季 | 亚洲视频小说图片| 蜜臀久久99精品久久久画质超高清| 成人妖精视频yjsp地址| 在线日韩av片| 国产日韩欧美a| 日韩中文字幕不卡| 9色porny自拍视频一区二区| 欧美一区二区视频在线观看2022 | 欧美成人官网二区| 亚洲欧美经典视频| 国产乱码精品一区二区三区忘忧草| 色国产综合视频| 国产午夜久久久久| 免费在线欧美视频| 一本大道久久a久久精品综合| 精品国产精品网麻豆系列| 亚洲高清免费视频| 成人黄色综合网站| 日韩美女在线视频| 亚洲gay无套男同| 99久久精品免费| 久久久久国产精品麻豆| 日本欧美肥老太交大片| 在线精品视频免费播放| 欧美国产精品专区| 激情综合色播五月| 欧美电影在哪看比较好| 一区二区成人在线| www.欧美亚洲| 国产婷婷一区二区| 精品一区二区三区欧美| 欧美日韩日日摸| 亚洲精品一二三| 成人aa视频在线观看| 久久免费视频一区| 久久99国产精品久久| 91精品免费在线|