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

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多源遥感影像的沂沭断裂带东地堑断层精细解译

何萌1, 张景发2, 魏久传1, 罗毅2, 王鑫2, 夏锐2, 葛孚刚3, 杨彬3   

  1. 1.山东科技大学地球科学与工程学院, 山东 青岛 266590;
    2.应急管理部国家自然灾害防治研究院, 北京 100085;
    3.山东省震灾风险防治中心, 山东 济南 250021
  • 收稿日期:2021-09-22 修回日期:2021-11-25 发布日期:2023-03-31
  • 通讯作者: 张景发, 研究员。 E-mail: zhangjingfa@hotmail.com
  • 作者简介:何萌(1996-), 女, 河北保定人, 硕士研究生, 主要从事遥感活动构造提取研究。
  • 基金资助:
    国家自然科学基金项目(41902218); 临沂市国际生态城地震断层探测与地震危险性评价; 高分遥感地震监测与应急应用示范系统(二期)川滇地区高分活动构造与风险排查示范(31-Y30F09-9001-20/22-6)

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

摘要: 沂沭断裂带为郯庐断裂带山东段, 是郯庐断裂带中活动性最强的一条断裂。 对活动断层进行精细解译具有重要意义。 本文收集了沂沭断裂带东地堑的KH-4B卫星影像、 历史航片数据、 高分2号影像等, 对沂沭断裂带东地堑的3条主干断裂进行了遥感解释和构造地貌学分析, 获取了更精细的断层分布。 结果表明, 昌邑—大店断裂(F1), 总体NE走向, 线性特征突出, 沿断层处多发育陡坎、 跌水等, 多见由断层活动形成的串珠状水塘; 白芬子—浮来山断裂(F2)走向NNE, 历史影像中色调异常明显, 显示部分河流右旋位错; 安丘—莒县断裂(F5)走向NNE, 大体沿沭河发育, 地表形成系列串珠状湖泊。 跨3条主干断裂的冲沟均出现明显右旋位错, F5断裂最为明显。 另外, 沿断裂带测量了多个冲沟位错, 包括水平位错和垂直位错, 与野外调查相近。 相关工作可以为下一步的钻探和物探提供参考。

关键词: 历史航片, KH-4B卫星影像, 沂沭断裂带东地堑, 活动断层, 构造地貌

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

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