Interseismic Strain Accumulation Across the Main Recent Fault, SW Iran, From Sentinel?1 InSAR Observations

The Main Recent Fault is a major right-lateral strike-slip fault in the western Zagros mountains of Iran. geodetic and geological studies estimate low slip rate 1–6 mm/yr at an unknown depth which, when combined with non-ideal geometry, makes difficult but interesting target for InSAR analysis. This analysis would further cement estimated provide opportunity to base locked seismogenic zone, both important constraints on seismic hazard posed by fault, as well understanding how oblique convergence accommodated partitioned across Zagros. We use 200 Sentinel-1 SAR images from past 5 years, spanning two ascending descending tracks, first InSAR-derived locking 300 km long section fault. utilize established processing systems, LiCSAR LiCSBAS, produce interferograms perform time series analysis, respectively. constrain north-south motion using GNSS observations, decompose our line-of-sight velocities into fault-parallel vertical motion, fit 1-D screw dislocation models three fault-perpendicular profiles velocity, following Bayesian approach posterior probability distribution parameters. interseismic velocity 2.4 ± 1.2 below loosely constrained 14 depth, such discuss challenges constraining magnitude signals.