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 欧美 日韩中文字幕一区二区 | 精品国产三级v | 亚洲人成影院午夜网站 | 久久久9999久久精品小说 | 日韩欧美一级毛片在线 | 国产玖玖在线 | 精产网红自拍在线 | freesex寂寞老妇hd | 久久久全国免费视频 | 欧美另类丝袜 | 涩里番资源网站在线观看 | 97影院理论在线观看 | 97视频在线观看免费 | 特级毛片a级毛免费播放 | 色精品一区二区三区 | 日韩在线国产 | 伊人久久国产免费观看视频 | 久久欧美精品欧美九久欧美 | 九色91| 67194成人在线观看 | 一级毛片免费在线播放 | 国产v综合v亚洲欧美大另类 | 精品国产一区二区在线观看 | 香蕉97碰碰视频免费 | 久久综合狠狠综合狠狠 | 久久久国产精品视频 | 一区二区三区国模大胆 | 在线视频中文 | a级毛片在线看日本 | 免费a级毛片大学生免费观看 | 成人aaaa| 欧美成人鲁丝片在线观看 | 欧美日韩国产亚洲综合不卡 | 国产裸体美女视频全黄 | 久久精品国内一区二区三区 | 性a视频 | 亚洲精品亚洲人成在线 | 日韩中文字幕在线视频 | 一区二区三区观看 | 国产精品久久久久精 | 国产精品国产高清国产专区 |