SPOT-6与无人机航测技术在第四纪地质及活动构造填图中的应用——以内蒙古1∶50000呼勒斯太苏木等四幅填图试点为例

APPLICATION OF SPOT-6 AND THE UAV AERIAL TECHNOLOGY IN QUATERNARY GEOLOGY AND TECTONIC MAPPING: TAKING THE 1∶50000 MAPPING PILOT OF THE HULESITAI AREA,INNER MONGOLIA AS AN EXAMPLE

选择SPOT-6数据,对内蒙古呼勒斯太苏木等四幅图的SPOT-6遥感影像进行正射校正、配准及信息的数字增强处理后,根据不同地质体影像特征、野外实地调查,初步建立了填图区第四纪地层及新构造活动的解译标志,并结合野外地质调查,对研究区沉积物的成因类型和分布范围、地貌特征及分区、活动构造运动等进行了调查验证;利用2015年飞行的无人机航测数据,对区内新构造、活动构造进行了识别及活动性质的初步判断。研究结果表明,高精度遥感技术及无人机技术在平原区第四纪地质填图中具有独特优势,有助于快速识别第四纪沉积成因类型与相对时序及准确厘定区域主要活动断裂空间位置与活动特征,从而有效提升填图工作效率,并弥补地表调查的局限。

Through choosing the SPOT-6 data, on the basis of pre-proceeding images of the Hulesitai area, Inner Mongolia, including Ortho-rectification, registration and sharpness, we initially established Quaternary strata and the neotectonic activity symbols for remote sensing interpretation of mapping area according to the image characteristics of different geological bodies and field investigation. Combined with field geological survey,we investigated and analyzed the origin and distribution of sediments,the geomorphological features and zoning,active tectonic movement etc. in the study area. And through the UAV aerial flight data in 2015,we identified the neotectonics,active tectonics and initially determine the activity characteristics. The study show that high precision of remote sensing technology and UAV technology in Quaternary geological mapping in plain area has unique advantages,which is contributed to the rapid identification of Quaternary sedimentary types and the relative timing,and determine precisely the spatial position of the main fracture and the activity characteristics in the area. It increases the efficiency of mapping work and makes up for the limitations of surface survey.