Welcome to EARTHQUAKE,

EARTHQUAKE ›› 2022, Vol. 42 ›› Issue (4): 137-148.doi: 10.12196/j.issn.1000-3274.2022.04.011

Previous Articles     Next Articles

Fine Interpretation of Faults in the Eastern Graben of Yishu Fault Zone from Multi-Source Remote Sensing Images

HE Meng1, ZHANG Jing-fa2, WEI Jiu-chuan1, LUO Yi2, WANG Xin2, XIA Rui2, GE Fu-gang3, YANG Bin3   

  1. 1. College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China;
    2. National Institute of Natural Hazards, Beijing 100085, China;
    3. Earthquake Administration of Shandong Province, Ji'nan 250014, China
  • Received:2021-09-22 Revised:2021-11-25 Published:2023-03-31

Abstract: The Yishu fault zone as the most active part is the Shandong segment of Tanlu fault zone. Fine interpretation of active faults is of great significance. This paper collected KH-4B satellite images, historical aerial data and GF-2 images, and carried out remote sensing interpretation and tectonic geomorphology analysis on three main faults of the east graben of the Yishu fault zone. The results show that the Changyi-Dadian fault (F1) is NE trending in general, with prominent linear characteristics. Along the fault line, steep slopes and water drops are mostly developed, and beaded ponds formed by fault activities are common. The Baifenzi-Fulaishan fault (F2) approaches NNE, and the historical images show obvious middle tone anomaly, indicating some river dextral dislocations. The Anqiu-Juxian Fault (F5) strikes NNE and develops along the Shuhe River, forming a series of beaded lakes on the surface. There are obvious dextral dislocations in the gullies across three main faults, F5 being the most one. Compared with previous works, the fault distribution interpretation in this paper is more precise, and multiple gully dislocations, including horizontal and vertical dislocations, have been measured along the fault zone, which is similar to the field survey. The related work can provide reference for further drilling and geophysical exploration.

Key words: Historical aerial photos, KH images, East graben of Yishu fault zone, Active fault, Tectonic geomorphology

CLC Number: