Abstract Using Sentinel-1 ascending and descending data and D-InSAR technology, we obtain the LOS deformation field of May 22, 2021Maduo,Qinghai,MW7.3 earthquake. As the earthquake rupture reaches the surface, the interference fringes along the fault section are discontinuous, broken and overlapping. In order to accurately extract the geometric distribution of the seismogenic fault of the earthquake, combined with the Landsat-8 optical image data before and after the earthquake, we extract the horizontal deformation field and geometric distribution characteristics of the Maduo earthquake based on the frequency domain cross-correlation algorithm. The results show that the surface fracture track of the earthquake is 155.6 km, and there are branch fractures at the head and end. The main surface fracture zone can be divided into three segments, with great differences in strike between each segment. Its overall distribution is NWW. The seismogenic fault is mainly sinistral strike slip. It is speculated that this earthquake is controlled by the Kunlunshankou-Jiangcuo fault.
HE Meng,WANG Xin,WEI Jiuchuan et al. Coseismic Deformation Extraction of 2021 Maduo MW7.3 Earthquake Based on Combined Optical and Radar Remote Sensing Data[J]. jgg, 2022, 42(7): 707-711.
HE Meng,WANG Xin,WEI Jiuchuan et al. Coseismic Deformation Extraction of 2021 Maduo MW7.3 Earthquake Based on Combined Optical and Radar Remote Sensing Data[J]. jgg, 2022, 42(7): 707-711.
