USEUROPEAFRICAASIA 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

    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.

    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
     
    波多野结衣中文在线播放| av无码国产在线看免费网站| 久久精品无码一区二区三区免费| 亚洲乱码中文字幕综合234| 国产在线观看无码免费视频| 亚洲精品~无码抽插| 亚洲欧美成人久久综合中文网 | 最好看的最新高清中文视频| 国产V片在线播放免费无码| 国产成人无码AV一区二区在线观看| 中文无码制服丝袜人妻av| 精品无码日韩一区二区三区不卡| 乱人伦中文无码视频在线观看| 久久精品中文闷骚内射| 亚洲AⅤ无码一区二区三区在线| 无码人妻一区二区三区兔费| 日日摸夜夜添无码AVA片| 欧美无乱码久久久免费午夜一区二区三区中文字幕 | 内射无码午夜多人| 国产激情无码一区二区| 日韩精品无码一区二区中文字幕 | 国产成人无码av| 亚洲AV中文无码乱人伦在线视色| 一本无码中文字幕在线观| 四虎国产精品永久在线无码| 精品久久无码中文字幕| 亚洲AV无码第一区二区三区| 极品粉嫩嫩模大尺度无码视频| 一二三四在线播放免费观看中文版视频 | 亚洲一区二区中文| 中文人妻av高清一区二区| 中文字字幕在线中文无码| 亚洲午夜无码AV毛片久久| 性无码专区| 亚洲av无码成人黄网站在线观看| 亚洲精品无码鲁网中文电影| 免费无码一区二区| 99久久无色码中文字幕人妻| 亚洲乱码中文字幕久久孕妇黑人| 欧美日韩中文国产一区发布 | 久久超乳爆乳中文字幕|