Abstract The co-seismic deformation field of the MW7.1 and MW6.4 earthquakes in California is extracted using the frequency domain cross-correlation algorithm based on the Landsat-8 and Sentinel-2 optical images.At the same time, we use some error processing algorithms, such as the least square polynomial fit, the method of improved mean subtraction, and so on, to reduce the system errors often caused by orbit error, banding error and temporal decorrelation. The results show that the maximum slippage of the fault trajectory caused by the MW6.4 foreshock is 1.05 m and the surface rupture trajectory is 15 km while the maximum surface slippage of MW7.1 main shocks reaches 2.82 m and the surface fault trajectory is 55 km. We speculate that the two earthquakes formed a typical conjugate characteristic, which is controlled by NNW and NE strike-slip faults.
FU Zhihao,WANG Xin,ZHANG Jingfa. Co-Seismic Deformation Measurement of 2019 MW6.4 and MW7.1 California Earthquakes Base on Optical Remote Sensing Images[J]. jgg, 2021, 41(5): 506-510.
FU Zhihao,WANG Xin,ZHANG Jingfa. Co-Seismic Deformation Measurement of 2019 MW6.4 and MW7.1 California Earthquakes Base on Optical Remote Sensing Images[J]. jgg, 2021, 41(5): 506-510.
