Studying the activity of salt diapirs is a highly complex task. Here, we addressed this challenge by utilizing eight years of Sentinel-1 satellite ascending and descending orbit data to decompose two-dimensional annual subsidence deformations in both the east-west and vertical directions. Employing statistical methods, we extracted and analyzed the pixel values of two-dimensional deformation in ten salt diapirs. Leveraging prior conclusions of activity in seven of these diapirs, we predicted and validated the activity of the remaining three diapirs with unknown activity. Ultimately, we confirmed that all three of these diapirs exhibit features indicative of activity.
With the continuous launch of spaceborne SAR, InSAR three-dimensional measurement has been further developed on the basis of one-dimensional and two-dimensional methods based on interferometry. Based on the SM-VCE method, this paper performs high-precision three-dimensional surface deformation reconstruction in Maduo County, China. Through different data sources involved in the reconstruction of three-dimensional deformation, the difference between SM-VCE and traditional algorithm (WLS) is analyzed. Finally, the difference between them is quantitatively analyzed by GNSS stations.
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