Fig. 3: Coseismic slip distribution for the March 28, 2025 Mw7.7 Myanmar earthquake.

a Surface fault-parallel slip field derived from pre- and post-earthquake Sentinel-2 satellite imagery (24 scenes in total) using POT. The black continuous coarse line indicates the surface fault trace extracted from slip field, with short fine lines perpendicular to it locating the slip profiles presented in Fig. 4. The color gradient from red to blue indicates slips where blue points moved north and red points south. Short coarse lines on the left represent the segmented boundaries of the SSF²⁹. Two red circles demote the positions of Figs. 5, 6. b Slip distribution along the SSF measured using POT and high-resolution optical imagery, demonstrating rupture segmentation into the Sagaing segment and Nay Pyi Taw segment. Light brown lines represent slip data sourced from USGS (USGS)², while light blue lines obtained using BJ3N3 optical images. c Relationship between the rupturing distance and time based on the USGS four-segment finite-fault slip distribution model (USGS)^32,59. A change in rupture propagation velocity is indicated by the blue arrow.