Mapping the Recent Vertical Crustal Deformation of the Weihe Basin (China) Using Sentinel-1 and ALOS-2 ScanSAR Imagery

The Weihe Basin, located in central China, is a Cenozoic rift basin that characterized by complicated geological background, with intense tectonic movement and relatively significant seismic activity. faulting behaviors, slip rates, geometrical structures, possible surface traces of the active faults Basin are still not well known. goal this work to provide more complete picture recent vertical ground deformation identify faults. We derived two basin-wide average InSAR maps during 2015–2019 using C-band Sentinel-1A/B L-band ALOS PALSAR2 ScanSAR imagery. east–west components decomposed from ascending descending measurements show dominates Basin. Subsidence uplift maxima both occurred over Xi’an region at rates about ?146 20 mm/y, respectively. A subsidence ~38 mm/y was found Sanyuan, Fuping, Weinan, Lantian, Qianxian, Xingping while an ~11 Fufeng, Huxian, Jingyang, Pucheng, Huaxian. these regions spatially linked previously identified or unmapped rate ~13.7 on F20, F6, F10, F7 explained observed up 5 Fufeng Wugong areas. Furthermore, fault were clearly for F7-1, F8-1, F25, F26 based discontinuities InSAR-derived measurements. Our results accurate economical way delineate associated geohazards offer independent unprecedented data further geophysical interpretation.