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地震 ›› 2016, Vol. 36 ›› Issue (3): 87-98.

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青海日月山断裂德州段断错地貌的高分辨率遥感影像解译

黄帅堂1, 田勤俭1, 李智敏2李文巧1, 付国超1, 殷翔2   

  1. 1.中国地震局地震预测研究所, 中国地震局地震预测重点实验室, 北京 100036;
    2.青海省地震局, 西宁 810001
  • 收稿日期:2016-02-01 发布日期:2020-07-03
  • 通讯作者: 田勤俭, 研究员。 E-mail: tianqj@263.net
  • 作者简介:黄帅堂(1990-), 男, 甘肃武威人, 在读硕士研究生, 主要从事活动构造和地震构造等研究。
  • 基金资助:
    中国地震行业专项(201408023)资助

Interpretation of High-resolution Remote Sensing Image of Offset Landform in Dezhou Segment of the Riyueshan Fault, Qinghai Province

HUANG Shuai-tang1, TIAN Qin-jian1, LI Zhi-min2, LI Wen-qiao1, FU Guo-chao1, YIN Xiang2   

  1. 1. Institute of Earthquake Science CEA, Beijing 100036, China;
    2. Qinghai Earthquake Administration, Qianghai Xining 810001, China
  • Received:2016-02-01 Published:2020-07-03

摘要: 青海日月山断裂带是青藏高原东北缘柴达木—祁连活动地块内部的一条NNW走向的右旋走滑兼逆冲断裂。 本文基于ENVI 5.1遥感图像处理平台对研究区高分一号多光谱(分辨率8 m)和全色(分辨率2 m)影像进行融合, 获取了高保真、 高分辨率的卫星遥感影像。 通过多尺度、 多角度、 多层次的构造解译以及对比, 将日月山西支断裂的海晏段划分为德州段(F1-3)和海晏段(F1-4)两个次级段, 同时利用高分辨率Google Earth影像对德州段断错微地貌进行了解译、 分析, 结合对德州段野外地质考察, 进一步验证了影像解译结果。 研究表明: 日月山断裂的德州段由5条次级段落组成(f1, f2, f3, f4, f5), 并且该段断裂晚更新世以来活动性明显, 以右旋走滑为主兼有逆倾滑分量; 断裂在晚更新世以来发生过多期断层活动, 其中全新世断层活动可划分为两期, 最新一期水平位错量为6.5~8.7 m, 第二期水平位错量为12.3~14 m; 晚更新世也可划分出两期活动, 第一期水平位错量为16~20 m, 第二期水平位错量为28.5~47 m。

关键词: 日月山断裂, 遥感影像, 几何分段, 构造地貌, 活动断裂

Abstract: The Riyueshan fault zone which locates in the northeastern margin of the Qaidam—Qilian active block is an NNW trending inverse dextral strike-slip fault. Using ENVI 5.1 image processing platform, we have fused the thigh GF-1 spectrum (resolution 8 m) and panchromatic (resolution 2 m) image for a high-fidelity, high-resolution satellite remote sensing image of the study area. Through interpretation and comparison with the multi-scale, multi-angle, multi-level structure, we divide Haiyan segment fracture (F1-3, F1-4) in west branch of Riyueshan fault zone into two sub-segments including Dezhou segment (F1-3) and Haiyan segment (F1-4), while we use the high-resolution Google-Earth images of each fault segment faulted micro-geomorphology translation to interpret and analyze. Based on geological surveying and field researching in Dezhou segment, we found that image interpretation is consistent with the field results . According to the remote sensing image, Dezhou section can be divided into five subparagraph (f1, f2 , f3, f4, f5), and then according to the dislocation landform, the activity of Dezhou segment have become stronger since late Pleistocene, and strike-slip component is greater than the dip-slip component, for the reverse dip-slip fault properties. Fault occurred multi-phase fault activity events since the late Pleistocene and the Holocene Active fault can be divided into two stages, the latest issue of horizontal displacement for 6.5~8.7 m, the second phase of the horizontal dislocation is 12.3~14 m; and the late Pleistocene can be divided into two sessions, the first phase of the horizontal displacement for 16~20 m, the second phase of the horizontal displacement for 28.5~47 m.

Key words: Riyueshan fault, Remote Sensing images, Geometric segmentation, Tectonic geomorphology, Active fault

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