Abstract The present-day crustal deformation rates near 91° E in the middle section of the Altyn Tagh fault zone are obtained using SBAS InSAR based on 14 ALOS PALSAR scene imagery from 2007 to 2010, and the slip velocities and the locked depth in different segments are calculated as well. The results show that the deformation pattern from north to south is characterized by linear decrease with three different rate gradients. The rates are 8~12 mm/a in the eastern part of the Altyn mountains, 6~7 mm/a in the Xorkol basin, and 0 mm/a in the south of the Altyn Tagh fault, respectively. The significant rate changes of the three sections are concentrated on the two fractured zones of the Kaladaban fault and the Altyn Tagh fault. The best fitted fault is located at the southern margin of Jinyan mountains. The strike-slip rates increase from 7.1 mm/a in the west to 14.0 mm/a in the east. The locking depth is increased from 4.5 km in the west to 10.6 km in the east. Referring to previous research results, it is inferred that the Jinyan mountain and the Xorkol basin form a composite fault structure, which is the main adjustment model of strain and stress during the transition fault movements.
QIU Jiangtao,ZHU Liangyu,WANG Suisui. Study on the Contemporary Tectonic Deformation Pattern of the Middle Altyn Tagh Fault Zone as Revealed by InSAR Measurements[J]. jgg, 2018, 38(8): 783-786.
QIU Jiangtao,ZHU Liangyu,WANG Suisui. Study on the Contemporary Tectonic Deformation Pattern of the Middle Altyn Tagh Fault Zone as Revealed by InSAR Measurements[J]. jgg, 2018, 38(8): 783-786.