利用无人机摄影测量技术提取复杂冲积扇面构造活动信息——以新疆巴里坤盆地南缘冲积扇面为例

发布时间：2018-05-15 02:16

本文选题：无人机摄影测量技术 + 冲积扇地貌　；参考：《地震地质》2017年04期

【摘要】：由于自然改造的持续,地貌形态复杂,判断发育过程中的冲积扇是否经历过构造作用,一直是活动构造研究中的难点之一。近年来发展起来的无人机航空摄影测量技术在构造地貌数据采集方面有着突出的优势。文中结合野外调查和探槽等相关工作,利用无人机航空摄影测量技术对新疆巴里坤盆地南缘断裂上一处复杂的冲积扇面进行了高精度的DEM和DOM数据采集。针对正在发育的复杂冲积扇面,在对DEM进行地形解析和图像处理的基础上,采取了对扇面进行次级分区、逐个研究、相互佐证的方法,通过在次级分区内建立剖面集进行单独分析和邻近分区对比分析,明确了冲积扇面发育过程中经历的构造作用和2.5m的垂直变形量,显示该技术方法是识别复杂冲积扇残存构造信息并提取相关活动构造参数的有效手段。
[Abstract]:Because of the continuous transformation of nature and the complexity of geomorphology, it is one of the difficulties in the study of active tectonics to judge whether the alluvial fan has experienced tectonic action in the course of development. The aerial photogrammetry technology of UAV developed in recent years has a prominent advantage in the acquisition of structural geomorphological data. Combined with field investigation and grooving, the DEM and DOM data of a complex alluvial fan surface on the southern margin of the Balikun basin in Xinjiang are collected by using the aerial photogrammetry technique of unmanned aerial vehicle (UAV). On the basis of terrain analysis and image processing of DEM, the method of subdivision of fan surface, one by one, and mutual corroboration is adopted in view of the complex alluvial fan surface that is developing, and on the basis of terrain analysis and image processing of DEM, The tectonic action and the vertical deformation of 2.5 m during the development of the alluvial fan surface are determined by establishing the profile set in the secondary subzone for separate analysis and the comparative analysis of the adjacent zones. It shows that this method is an effective method to identify the residual structure information of complex alluvial fan and to extract the relevant active structural parameters.
【作者单位】：中国地震局地质研究所;陕西省地震局;四川省地震局;
【基金】：财政部重点项目“全国地震重点监视防御区活动断层地震危险性评价”(1521044025)资助
【分类号】：P231;P315

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