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

Global EditionASIA 中文雙語Fran?ais
China
Home / China / Innovation

Satellites may warn of killer landslides

By ANGUS MCNEICE | China Daily | Updated: 2017-07-14 07:54
Share
Share - WeChat

Researchers in China and the United Kingdom hope to use satellite imaging for the early detection of landslides in Southwest China, such as the one in late June that engulfed a village in Maoxian county, Sichuan province, leaving at least 10 dead and 73 missing.

A team of researchers from the UK's Newcastle University and several Chinese institutions analyzed before and after satellite images of the Maoxian region that show the danger area had been moving at a slow pace for at least six months before failing completely.

The team identified 10 other active landslides in the region and forwarded the information to authorities.

"When you consider this sort of time scale, it suggests that a landslide early-warning system is not only possible but would also be extremely effective," Li Zhenhong, professor of imaging geodesy at Newcastle University, said.

Brought on by heavy rainfall, the Maoxian landslide swept through homes in the village of Xinmo and buried a 1.6 kilometer section of road under an estimated 8 million cubic meters of rubble. A second landslide hit the village three days later, and a third also struck Shidaguan, a town 20 km away.

"If we can detect movement at a very early stage," Li said, "then in many cases it is likely we would have time to put systems in place to save lives."

Researchers from Chengdu University of Technology, Tongji University, the China Academy of Space Technology and Wuhan University, participated in the study. They analyzed images captured by the European Space Agency's Sentinel-1 satellite radar mission, composed of two polar-orbiting satellites, that operate day and night in all weather conditions.

Sichuan is frequently disrupted by tremors.

In 2008, one of the most devastating earthquakes in China's history struck the province, claiming more than 69,000 lives.

The team hopes to use the technology to build a landslide database, mapping active landslides in Sichuan and other seismically active regions of Southwest China.

"Going forward, we can use this information to set up real-time monitoring systems using existing satellites such as GPS, Beidou and Galileo for those sites and whenever we detect abnormal behavior, the system can send out an early-warning message," Li said.

Landslides are among the most common natural disasters.

More than 20,000 people were killed by more than 7,000 rainfall-caused landslides recorded around the world between 2007 and 2015, according to NASA's Global Landslide Catalog.

Top
BACK TO THE TOP
English
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
 
主站蜘蛛池模板: 日韩在线亚洲 | 久久国产欧美日韩高清专区 | a级片在线免费播放 | 自拍 欧美 | 一级大黄美女免费播放 | 视频一区二区在线 | 免费观看日本视频 | 1769视频在线观看国产 | 国产欧美一区二区日本加勒比 | 97青草香蕉依人在线播放 | 中国日本高清免费视频网 | 综合久久91 | 国产美女视频做爰 | 手机看片在线精品观看 | 古代级a毛片可以免费看 | 精品九九久久国内精品 | 97久久国语露脸精品对白 | 另类视频一区 | 亚洲国产精品一区二区三区在线观看 | 日韩视频中文字幕 | 男人躁女人躁的好爽免费视频 | 国内自拍区 | 国产成人a一在线观看 | 九草在线 | 欧美一级久久久久久久大 | 性盈盈影院在线观看 | 免费一级特黄3大片视频 | 97一级毛片全部免费播放 | 男吃女下面刺激视频免费 | 欧美成人影院在线观看三级 | 性欧美videofree中文字幕 | 免费黄网在线观看 | 成人午夜性视频欧美成人 | 国产精品久久视频 | 国产高清在线精品一区二区三区 | 日韩欧美在线视频一区二区 | 国产99精品免费视频看6 | 成年女人免费视频 | 一级做a毛片免费视频 | 永久免费毛片在线播放 | 成人黄色一级毛片 |