ArcGIS和RS技术在高植被覆盖率地区地热资源勘查中的应用

Application of ArcGIS and RS Technology in Exploration of Geothermal Resources at High Vegetation Coverage Ratio Area

热红外遥感技术已被广泛用于植被覆盖程度较低的高温地热异常区的地热资源勘查研究中,但在植被覆盖程度高的中低温地热资源勘查中的应用效果有待进一步论证。该文探索性的将ArcGIS和RS技术相结合应用于植被覆盖度高的中低温地热资源勘查中,采用基于单波段的单窗算法对福州地区地表温度进行反演,并利用ArcGIS软件分析了地表温度、已有地热异常点、构造之间的关系,提出福州地区北北东向大断裂为控热构造、北北西向断裂为导水构造的成因模式,并建立了地热异常判断因子提取潜在地热异常区。

The thermal infrared remote sensing technology has been widely applied in the geothermal resource survey in geothermal anomaly area with high temperature and low vegetation coverage, however, the applying effect in low-medium temperate and high vegetation coverage need to be demonstrated. This paper combines the ArcGIS with RS technology and they are used in the exploration of medium and low temperature geothermal resources with high vegetation coverage. The surface temperature in Fuzhou area is retrieved with the method of single-window algorithm based on single band, and the relationship between surface temperature .existed geothermal anomaly points and tectonics are analyzed by ArcGIS. Then the genetic models that the NNE faults is heat-controlled structure, while the NNW fault is water-conducted structure are presented. Finally, the geothermal anomaly judgment factors are established to extract the potential geothermal anomaly areas.