Abstract
Factors Influencing Activity of Xiwang Road Ground Fissure Based on Time-series Interferometric Synthetic Aperture Radar and Detection of Land Cover Changes Using Optical Imaging
Highlights
Ground fissures are a common ground deformation phenomenon in daily life
4.1 Deformation results of Xiwang Road ground fissure based on SBAS-interferometric synthetic aperture radar (InSAR)
The specific conclusions are as follows: [1] SBAS-InSAR is a very effective monitoring method for geological disasters resulting from slow changes and can reflect the spatiotemporal variations in the characteristics of ground fissures through a long time series obtained by surface deformation monitoring
Summary
Ground fissures are a common ground deformation phenomenon in daily life Their locations are often concealed, and the disasters caused by ground fissures often appear to randomly occur. By combining the results with historical research data, the activity mechanism of this ground fissure was obtained and the factors affecting its activity were briefly summarized.[5] an SAA can precisely monitor the displacement of soil within ground fissures, it is difficult to express the effects of regional environmental factors on the deformation mechanism and activity rate of ground fissures. As a processing technology of radar satellite remote sensing, interferometric synthetic aperture radar (InSAR) mainly uses the phase data of two or more SAR images covering the same area at different times to carry out interferometric processing and can obtain the surface deformation with millimeter-level accuracy.[6,7] the time-series deformation results of the monitored area are provided in the form of annual average deformation. InSAR technology has been widely used in 3D terrain reconstruction and in glacier drift, landslide, earthquake, and other deformation monitoring projects.[8,9,10,11]
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