yunjunz / 2021-maduo-eq Goto Github PK

This repo contains notebooks for the 3D co-seismic deformation of the 2021 Mw 7.4 Maduo earthquake in Qinghai, China (USGS) from Sentinel-1 SAR data. It's used in the following paper:

• Xu, L., Yunjun, Z., Ji, C., Meng, L., Fielding, E. J., Zinke, R., & Bao, H. (2023). Understanding the rupture kinematics and slip model of the 2021 Mw 7.4 Maduo earthquake: A bilateral event on bifurcating faults. Journal of Geophysical Research: Solid Earth, 128(4), e2022JB025936, doi:10.1029/2022JB025936.

Two pairs of Sentinel-1 SLCs (from ascending track 99 and descending track 106; both acquired at 20 - 26 May 2021) are used to derive the deformation in range and azimuth directions, using both InSAR and SAR speckle tracking techniques.

• S1_A099_20210520_20210526_IFG
• S1_A099_20210520_20210526_OFF_RG
• S1_A099_20210520_20210526_OFF_AZ
• S1_D106_20210520_20210526_IFG
• S1_D106_20210520_20210526_OFF_RG
• S1_D106_20210520_20210526_OFF_AZ
• S1_20210520_20210526_ENU

• 1. Prepare azimuth offsets
• 2. Prepare range offsets
• 3. Prepare interferograms
• 4. Decompose asc & desc azimuth offsets & interferograms into east/north/up
• Fig. 3 - Ground static displacement in (a) 3D and (b) near-field for surface traces
• Fig. S1 - Ground statid displacement in east, north and up directions