热红外遥感技术在安徽省金寨县地热资源调查中的应用

    Application of thermal infrared remote sensing technology in geothermal resource survey in Jinzhai County, Anhui Province

    • 摘要: 利用热红外遥感技术进行地热异常信息的提取可以为地热资源调查提供重要的依据.在充分掌握金寨县区域地质背景的基础上, 采用Landsat 8热红外TIRS10波段数据通过大气校正法进行地表温度反演, 采用高分一号和高分二号数据进行线环构造遥感解译, 再将遥感反演的地表温度、解译的线环构造和其他地质条件、已知地热资料进行综合分析, 建立地热异常区圈定依据, 圈定地热异常区, 并结合相关判定因子剔除假异常.最终在研究区共圈定7个潜在地热异常区, 为下一步地热资源实地调查提供先导支持.

       

      Abstract: The extraction of geothermal anomaly information with thermal infrared remote sensing technology can provide important basis for geothermal resource survey. Based on the regional geological background of Jinzhai County, the Landsat 8 TIRS10 band data are adopted for surface temperature inversion by atmospheric correction method, and the GF-1 and GF-2 data for remote sensing interpretation of linear and ring structures. Then, the surface temperature obtained from remote sensing inversion, interpreted linear and ring structures, and other geological conditions as well as the known geothermal data are comprehensively analyzed to delineate geothermal anomaly areas and eliminate false anomalies in combination with relevant judgment factors. Finally, a total of 7 potential geothermal anomaly areas are recognized in the study area, providing a guiding support for the next field survey of geothermal resources.

       

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