基于GF2号与Landsat8数据融合的遥感图像地质解译——以1∶5万瓦房店市幅为例
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本文为中国地质调查局“整装勘查区找矿预测与技术应用示范”子项目(编号:12120114027901)的成果。


Geological interpretation of remote sensing images based on data fusion of GF2 and landsat 8——A case study of the Wafangdian 1∶50000 quadrangle map
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    摘要:

    随着遥感卫星的分辨率越来越高,遥感技术在地质填图工作中的应用也愈发广泛,尽管遥感技术在地质学的应用仍有很多不足,但仅仅对于地质填图工作来说,已经可以节约部分野外工作量,通过遥感地质解译可区分岩性差异较大的地质体,并绘制其界线,减少不必要的野外调查,将地质工作者的精力放在更复杂的地学问题上。高分2号卫星属于中高分变率卫星,全色波段08 m,其数据质量高、数据获取方便、重访周期短等优点逐渐吸引地质工作者的注意。目前,使用高分2号卫星进行遥感地质解译的文献相对较少,本文具有一定的示范作用。本次以1∶5万标准图幅瓦房店市幅为例,使用GF2号数据与Landsat8数据融合和主成分分析后做假彩色合成影像,解译出地质单元21个,线性断裂构造61条,使用真彩色合成与DEM叠加建立地表三维模型来确定断裂期次与交切关系,最终将遥感地质解译结果与野外实地调查工作成果相对比,以分析地质解译精度,经测算两者平均吻合率达80%,达到1∶5万区域地质调需要,为瓦房店市幅1∶5万区域地质调查工作提供参考依据,填补瓦房店地区地质单元遥感影像特征的空白。

    Abstract:

    As the increasing resolution of remote sensing satellites,the application of remote sensing technology in geological mapping is becoming more and more extensive. The application of remote sensing in geology still has many shortcomings,but for geological mapping work can greatly save the numbers of field work. Remote sensing geological interpretation can distinguish geological bodies with large differences in lithology, and draw their boundaries, reduce unnecessary field investigations, and focus the geologists on more complex geosciences. GF2 satellite's panchromatic band is 0.8 m which belong to higher resolution satellite. In particular ,it has been favoured by geologist because of its date accuracy, convenient acquisition and a short period of return visit. At present, there are relatively few documents on remote sensing geological interpretation using GF2 satellite. This paper has certain demonstration effects.Take the city of Wafangdian in 1∶50000 standard map for instance. Using GF2 satellite remote sensing data in geological unit interpretation and linear structure interpretation and other aspects of work . Using GF2 data and Landsat8 data fusion and principal component analysis to make false color synthetic images. A comprehensive comparative analysis is made of the direct interpretation marks and the indirect interpretation marks, 21 geologic units and 61 linear fault structures were reconstructed. The true color synthesis and DEM superposition were used to establish the surface 3D model to determine the fracture period. Cross- cutting relationship, and finally compare the results of remote sensing geological interpretation with the results of field field investigations, to analyze the accuracy of geological interpretation, and the average agreement rate between the two is 80%,reaching the requirement of 1∶50000 regional geological adjustment. Provide reference basis for the investigative work of Wafangdian 1∶50000 areal geology. Fill in the blank of remote sensing image features of the geological unit in the Wafangdian area.

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王烜,王海鹏,王然,吴子杰,高福亮,康宁,万方来,王艺龙,杨欢,刘杰.2019.基于GF2号与Landsat8数据融合的遥感图像地质解译——以1∶5万瓦房店市幅为例[J].地质论评,65(4):918-928,[DOI].
WANG Xuan, WANG Haipeng, WANG Ran, WU Zijie, GAO Fuliang, KANG Ning, WAN Fanglai, WANG Yilong, YANG Huan, LIU Jie.2019. Geological interpretation of remote sensing images based on data fusion of GF2 and landsat 8——A case study of the Wafangdian 1∶50000 quadrangle map[J]. Geological Review,65(4):918-928.

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  • 收稿日期:2018-08-27
  • 最后修改日期:2019-04-27
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  • 在线发布日期: 2019-07-17
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