Offset measurements along active faults based on the structure from motion method——A case study of Gebiling in the Xorkoli section of the Altyn Tagh Fault

作     者：Baosong Xiong Xue Li Baosong Xiong;Xue Li

作者机构：Key Laboratory of Earthquake GeodesyInstitute of SeismologyChina Earthquake AdministrationWuhan430071China 

出 版 物：《Geodesy and Geodynamics》 (大地测量与地球动力学（英文版）)

年 卷 期：2020年第11卷第5期

页      面：358-366页

学科分类：0709[理学-地质学] 08[工学] 0707[理学-海洋科学] 0708[理学-地球物理学] 0705[理学-地理学] 0815[工学-水利工程] 0816[工学-测绘科学与技术] 081602[工学-摄影测量与遥感] 0825[工学-航空宇航科学与技术] 0704[理学-天文学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：supported by the Scientific Research Fund of Institute of Seismology and Institute of Crustal Dynamics  China Earthquake Administration (Grant No. IS201616248  IS201716155) 

主　　题：fault tectonics tectonic 

摘      要：This study reconstructs high-precision three-dimensional(3 D) surface models using aerial imagery derived from unmanned aerial vehicles(UAVs) with the structure from motion(SfM) method. By combining automatic extraction and manual visual interpretation, the geometry of the active tectonics and offset channels along the fault is obtained. The offsets, caused by the motion of active tectonics, are measured via the retrodeformation of geomorphologic markers. This paper takes the tectonic geomorphology of Gebiling in the Xorkoli section of the Altyn Tagh fault as a case study. After the construction of 3 D surface models using the UAV images and the SfM method, a data set of more than 200 offsets is obtained. The results indicate that 11 paleoearthquakes may have ruptured along the Gebiling section of the Altyn-Tagh fault.