Application of remote sensing to fault study: A case study of the Zhangjiakou-Penglai fault zone
Xue Youchen1,2, Cao Xianzhi1,2, Xu Liqing1,2, Li Sanzhong1,2, Zhao Shujuan1,2, Liu Xin1,2, Suo Yanhui1,2, Wang Pengcheng1,2, Guo Lingli1,2, Kong Xiangchao1,2, Dai Liming1,2
1. College of Marine Geosciences, Ocean University of China, Qingdao, Shandong 266100;
2. The Key Lab of Submarine Geosciences and Prospecting Techniques, Ministry of Education, Qingdao, Shandong 266100
The Zhangjiakou-Penglai fault zone is a NWW-trending active fault zone. ETM+ optical images and SRTM images are selected as the primary source data, based on the known geological data of the study area, this paper found that the fault zone is characterized by obvious liner features. Judged from topographical features such as water distribution and offset, the faults have characteristics of left step patterns and sinistral strike-slipping movement. Based on remote sensing images along the fault zone, it can be divided into three segments called the Zhangjiakou segment, the Yanqing-Huailai segment and the Beijing-Tianjin segment, which are the same as the segments of the fault zone. The research results show that the Zhangjiakou-Penglai fault zone is a sinistral strike-slipping fault, having controlled some en-echelon left-stepped Quaternary pull-apart basins and alluvial fans and offset the NNE(NE)-striking faults. Each segment of the fault zone controlled the different scale river system distribution and morphology. The Beijing-Tianjin segment has certain control to Quaternary alluvial fans and coastal areas of cheniers. Combining the results of remote sensing interpretation with deep-seated geophysical data and field geological investigation data shows that remote sensing technique for probing spatial distribution and activity of faults has a broad application.