SEISMOLOGY AND GEOLOGY ›› 2017, Vol. 39 ›› Issue (4): 793-804.DOI: 10.3969/j.issn.0253-4967.2017.04.013

Previous Articles     Next Articles

USING UAV PHOTOGRAMMETRY TECHNOLOGY TO EXTRACT INFORMATION OF TECTONIC ACTIVITY OF COMPLEX ALLUVIAL FAN——A CASE STUDY OF AN ALLUVIAL FAN IN THE SOUTHERN MARGIN OF BARKOL BASIN

GAO Shuai-po1, RAN Yong-kang1, WU Fu-yao1, XU Liang-xin1,2, WANG Hu1, LIANG Ming-jian1,3   

  1. 1 Institute of Geology, China Earthquake Administration, Beijing 100029, China;
    2 Earthquake Administration of Shaanxi Province, Xi'an 710068, China;
    3 Earthquake Administration of Sichuan Province, Chengdu 610041, China
  • Received:2016-07-25 Revised:2017-05-05 Online:2017-08-20 Published:2017-09-15

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

高帅坡1, 冉勇康1, 吴富峣1, 徐良鑫1,2, 王虎1, 梁明剑1,3   

  1. 1 中国地震局地质研究所, 北京 100029;
    2 陕西省地震局, 西安 710068;
    3 四川省地震局, 成都 610041
  • 通讯作者: 冉勇康,男,研究员,E-mail:ykran@263.net
  • 作者简介:高帅坡,男,1991年生,在读硕士研究生,研究方向为活动构造,电话:010-62009038,E-mail:gspabc@163.com。
  • 基金资助:
    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

Abstract: Alluvial fans that are in the process of development always show complex geomorphic features due to natural modification. Accordingly, analyzing these fans whether to be influenced by tectonic deformation is one of the technique difficulties in active tectonic studies. Complex alluvial fans are the focus of the study of active tectonics such as fracture mapping and activity behavior analysis, for they have often retained important structural information. Traditional measurement methods, such as satellite remote sensing, RTK GPS and Lidar, are difficult to meet the demand for the study of micro tectonic deformation because of the reason of accuracy or cost performance. The recent UAV photogrammetry technology, due to its many advantages such as low cost, high resolution, and efficiency of exporting DEM and DOM data, has been widely used in three-dimensional modeling, ground mapping and other fields. In the quantitative study of active tectonics, this technology fills up the deficiency in the research of the micro structure of the traditional measurement. Through detailed field investigations and paleoseismic trenching, we further used this technology to obtain the topographic data of a complex alluvial fan located at the southern marginal fault of Barkol Basin, Xinjiang. Pointing at the alluvial fans that are in the process of development, and on the basis of topographic analysis and image processing for DEM, we take the research method of secondary partitions of the geomorphic surface and cut the alluvial fans longitudinally according to the difference of its age. Through the establishment of profile cluster within each partition, separate analysis and data contrast with the adjacent partitions, we acquired the tectonic activity information during the development of alluvial fan. The tectonic vertical deformation of this alluvial fan is about 2.5m.

Key words: UAV photogrammetry technology, alluvial fan geomorphology, the southern margin of Barkol Basin, information of tectonic activity

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。

关键词: 无人机摄影测量技术, 冲积扇地貌, 巴里坤盆地南缘, 构造活动信息

CLC Number: