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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 | |
| 引用本文： | 黄帅堂,田勤俭,李智敏李文巧,付国超,殷翔.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[J].地震,2016,36(3):87-98. |
| 作者姓名： | 黄帅堂 田勤俭 李智敏李文巧 付国超 殷翔 |
| 作者单位： | 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 |
| 基金项目： | 中国地震行业专项(201408023)资助 |
| 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 |
| 收稿时间： | 2016-02-01 |
Interpretation of High-resolution Remote Sensing Image of Offset Landform in Dezhou Segment of the Riyueshan Fault,Qinghai Province |
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| HUANG Shuai-tang,TIAN Qin-jian,LI Zhi-min,LI Wen-qiao,FU Guo-chao,YIN Xiang.Interpretation of High-resolution Remote Sensing Image of Offset Landform in Dezhou Segment of the Riyueshan Fault,Qinghai Province[J].Earthquake,2016,36(3):87-98. | |
| Authors: | HUANG Shuai-tang TIAN Qin-jian LI Zhi-min LI Wen-qiao FU Guo-chao YIN Xiang |
| Institution: | 1. Institute of Earthquake Science CEA, Beijing 100036, China; 2. Qinghai Earthquake Administration, Qianghai Xining 810001, China |
| 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. |
| Keywords: | Riyueshan fault Remote Sensing images Geometric segmentation Tectonic geomorphology Active fault |
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