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: 亚洲一区欧美一区 | 日韩中文在线 | 欧美片欧美日韩国产综合片 | 欧美在线播放成人免费 | 成人观看的视频三级 | 99精品久久99久久久久久 | 黄色a网站| 又黄又刺激下面流水的视频 | 国产一及毛片 | 亚洲欧美手机在线观看 | se94se最新网站| 手机看成人片 | 美国做受三级的视频播放 | 日本综合久久 | 亚洲美女在线观看亚洲美女 | 精品欧美日韩一区二区 | 男女国产一级毛片 | 日日噜噜噜夜夜爽爽狠狠69 | 久草在线免费色站 | 男人的天堂视频在线观看 | 亚洲天堂国产 | 日本三级香港三级妇三 | 亚洲国产精品激情在线观看 | 国产亚洲综合在线 | 好爽~好硬~好紧~蜜芽 | 99精品在线免费观看 | 综合久久久久久中文字幕 | 欧美做暖小视频xo免费 | 久久精品在线免费观看 | 亚洲激情 欧美 | 自拍视频一区 | 国产日产欧美精品一区二区三区 | 久久免费毛片 | 亚洲字幕 | 久久精品久久精品久久 | 日韩中文字幕精品 | 久久久久久免费观看 | 91成年人视频 | 国产一级片观看 | 国产亚洲精品美女一区二区 | 日本免费人成黄页网观看视频 |