| 无人机提取走滑断裂构造信息——以西准噶尔冬别列克断裂为例 |
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| 引用本文： | 姚远.无人机提取走滑断裂构造信息——以西准噶尔冬别列克断裂为例[J].内陆地震,2020,34(2):111-118. |
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| 作者姓名： | 姚远 |
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| 作者单位： | 新疆维吾尔自治区地震局,新疆乌鲁木齐830011 |
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| 基金项目： | 中国地震局地震科技星火计划项目 |
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| 摘 要： | 由断层活动形成的构造地貌是强震与长期地表过程共同作用的结果,其形态包含着丰富的构造信息。但受限于测量技术和精度,如何从复杂的构造地貌中识别这一信息一直都是活动构造研究的难点。文中结合运动重建模型(SFM,Structure from Motion)的无人机(UAV,Unmanned Aerial Vehicle)低空航测技术,以准噶尔盆地西边界的冬别列克左旋走滑断裂为研究对象,重点选择了断裂构造变形典型的区域(南段:阿合别斗河阶地;北段:乌勒雪特河阶地)作为研究对象,利用微型旋翼无人机对特征区域进行航拍,得到了断裂的大比例正摄影像(DOM)和数字高程数据(DEM),对地貌单元的精细划分并对其与断层的切割关系进行了解译,获得了断裂准确的构造活动信息。对比两个典型区域的阶地位错量,分析了断裂沿线的阶地,共划分了4级阶地:Ta5(49.7 m±1.9 m)、Ta4max(30.7m±2.1 m)、Ta4min(20.1~22.8 m)、Ta3(12.0 m^12.7 m)和Ta2(8.7 m±0.6 m)。
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| 关 键 词： | 走滑断裂 无人机 阶地位错 西准噶尔 |
USING UAV PHOTOGRAMMETRY TECHNOLOGY TO EXTRACT INFORMATION OF TECTONIC:A CASE STUDY OF THE DONGBIELIEKE FAULT,WEST JUNGGAR |
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| Yao Yuan.USING UAV PHOTOGRAMMETRY TECHNOLOGY TO EXTRACT INFORMATION OF TECTONIC:A CASE STUDY OF THE DONGBIELIEKE FAULT,WEST JUNGGAR[J].Inland Earthquake,2020,34(2):111-118. |
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| Authors: | Yao Yuan |
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| Institution: | (Earthquake Agency ui Xinjiang Uygur Autouomous Region,Urumqi 830011,Xinjiang,China) |
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| Abstract: | The tectonic landform formed by fault activity is a result of the interaction of strong earthquake and long-term surface process.Due to the limitation of measurement technique and precision,how to identify this information from the complex tectonic landform has always been a difficult problem in active tectonic research.This paper combines the low-altitude aerial survey technology of UAV(Unmanned Aerial Vehicle)with the SFM(Structure from Motion).The typical fault tectonic deformation area(Ahebiedouhe terrace and Wulexuetehe terrace)of the Dongbielieke strike-slip fault on the western Junggar basin was selected as the research object.We used UAV to take aerial photos of the study area,and obtained the large proportion of Digital Orthophoto Model(DOM)and digital elevation Model(DEM)of the fault.Through understanding and translating the fine division of geomorphic units and the cutting relation of faults,accurate tectonic activity information of faults is obtained.Finally,we compared the dislocations of the terraces in the two typical regions,analyzed the terraces along the fault,and divided four levels of terraces.These terraces are Ta5(49.7±1.9 m)、Ta4 max(30.7±2.1 m)、Ta4 min(20.1-22.8 m)、Ta3(12.0-12.7 m)and Ta2(8.7±0.6 m),respectively. |
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| Keywords: | Strike-slip fault UAV Terrace dislocation West Junggar |
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