Abstract:On February 6, 2016, a MW6.4 earthquake occurred in Meinung district of Kaohsiung city, Taiwan,China. The epicenter area, determined by seismic data, lies in a region bounded by Chaochou and Chishan faults. The co-seismic surface deformation of the region is extracted using Sentinel-1A radar data based on differential interferometry. We get reliable co-seismic displacement fields compared with GPS data. InSAR-derived displacement field shows that there is an uplift zone along line-of-sight of about 30 km diameter, located at about 15 km west of the epicenter with a maximum displacement of about 12 cm. There is no apparent rupture around the macro-epicenter from the spatial distribution of displacement. The InSAR application of determining the macro-epicenter quickly shows the scientific significance of relief supplies and rapid assessment after earthquake.
DONG Jinglong,SHEN Qiang,WANG Hansheng et al. Observation of Coseismic Deformation and Preliminary Analysis of Meinung MW6.4 Earthquake in Taiwan from InSAR Images[J]. jgg, 2017, 37(9): 893-897.