Journal of Geodesy and Geoinformation Science ›› 2021, Vol. 4 ›› Issue (1): 77-87.doi: 10.11947/j.JGGS.2021.0110

• Special Issue • Previous Articles     Next Articles

Land Surface Displacement Geohazards Monitoring Using Multi-temporal InSAR Techniques

Guang LIU1(),Perski ZBIGNIEW2,Salvi STEFANO3,Thiebes BENNI4,Lixin WU5,Jinghui FAN6,Shibiao BAI7,Lianhuan WEI5,Shiyong YAN9,Rui SONG9,Bignami CHRISTIAN3,Tolomei CRISTIANO3,Stefan SCHNEIDERBAUER10,João Sousa JOAQUIM11,12   

  1. 1. Key Laboratory of Digital Earth Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100094, China
    2. Carpathian Branch, Polish Geological Institute-National Research Institute, Cracow 31-560, Poland
    3. National Institute of Geophysics and Volcanology, Roma 605-00143, Italy
    4. German Committee for Disaster Reduction, Bonn 13, 53113, Germany
    5. School of Resources and Civil Engineering, Northeastern University, Shenyang 110819, China
    6. Division of Remote Sensing for Environment, China Aero Geophysical Survey & Remote Sensing Center for Natural Resources, Beijing 100083, China
    7. School of Marine Science and Ocean Engineering, Nanjing Normal University, Nanjing 210046, China
    8. School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou 221116, China
    9. Mullard Space Science Laboratory Department of Space and Climate Physics, University College London Holmbury RH5 6NT, UK
    10. Eurac Research, Bolzano 39100, Italy
    11. School of Science and Technology, University of Trás-os-Montes e Alto Douro, Vila Real 5000-801, Portugal
    12. Centre for Robotics in Industry and Intelligent Systems (CRIIS), INESC Technology and Science (INESC-TEC), Porto 4200-465, Portugal
  • Received:2020-10-10 Accepted:2020-12-25 Online:2021-03-20 Published:2021-04-06
  • About author:Guang LIU (1979-), male, professor. E-mail: liuguang@radi.ac.cn
  • Supported by:
    National Natural Science Foundation of China(41590852);National Natural Science Foundation of China(42071453)

Abstract:

China has been affected by some of the world’s most serious geological disasters and experiences high economic damage every year. Geohazards occur not only in remote areas but also in highly populated cities. In the framework of the Dragon-4 32365 Project, this paper presents the main results and the major conclusions derived from an extensive exploitation of Sentinel-1, ALOS-2 (Advanced Land Observing Satellite 2), GF-3 (GaoFen Satellite 3), and latest launched SAR (Synthetic Aperture Radar), together with methods that allow the evaluation of their importance for various geohazards. Therefore, in the scope of this project, the great benefits of recent remote sensing data (wide spatial and temporal coverage) that allow a detailed reconstruction of past displacement events and to monitor currently occurring phenomena are exploited to study different areas and geohazards problems, including: surface deformation of mountain slopes; identification and monitoring of ground movements and subsidence; landslides; ground fissure; and building inclination studies. Suspicious movements detected in the different study areas were cross validated with different SAR sensors and truth data.

Key words: Dragon-4 project; Sentinel-1; GF-3; landslide; geohazards; InSAR