The use of Differential Interferometric Synthetic Aperture Radar (DInSAR) technique for determining the displacement field caused by the March 28, 2025 Myanmar earthquake (Mw 7.7)

Emadali, Lotfollah; Motaghed, Sasan

doi:10.22077/jt.2025.9696.1207

The use of Differential Interferometric Synthetic Aperture Radar (DInSAR) technique for determining the displacement field caused by the March 28, 2025 Myanmar earthquake (Mw 7.7)

Document Type : Original Article

Authors

Lotfollah Emadali ¹

Sasan Motaghed ²

¹ Civil Department, Engineering Faculty, Behbahan Khatam Alanbia University of Technology, Behbahan, Iran

² Department of Civil Engineering, Faculty of Civil engineering and architecture, Shahid Chamran University of Ahvaz, Ahvaz, Iran

10.22077/jt.2025.9696.1207

Abstract

Earthquake is one of the most devastating natural disasters that, depending on its characteristics and the region of occurrence, can cause significant human casualties and financial losses. To reduce such damages, it is necessary to use past earthquake data based on ergodic assumptions for determining the characteristics of future earthquakes and for developing design guidelines, seismic assessment, and retrofitting procedures. Paying attention to these issues is especially important in the near-fault region, where very limited information is available. One of the key and fundamental parameters of near-fault earthquakes is the amount of permanent ground displacement. Permanent displacement can exacerbate structural damage in the near-fault zone. In recent decades, the method of DInSAR (Differential Interferometric Synthetic Aperture Radar) has been widely used to determine the displacement field resulted by earthquakes. In this study, the surface displacement caused by the March 28, 2025 Myanmar earthquake (Mw 7.7) was evaluated using the DInSAR method with the Sentinel-1radar images. The processing results showed that the maximum displacement of approximately 82 cm along the satellite line of sight occurred along the fault line near the earthquake epicenter.

Keywords

displacement field

near-field earthquake

Sagaing fault

strike-slip fault

DInSAR