目前,地热资源勘查仍以传统的物探方法为主,这样在探测区地热宏观环境条件不明时,就会出现投资风险大或盲目开采的情况;而遥感对地热资源的探测是弥补这一不足的先进技术。本文利用陆地卫星遥感数据处理方法进行了有效的遥感地质解译,依据陆地卫星红外遥感数据所反映的地物辐射温度差异特点,对遥感影像进行波段差值运算、HIS(HLS)彩色变换的增强处理,获得了工作区范围内的热异常分布格局。另通过遥感地质解译、地面调查等综合分析,剔除地热假异常,有效提取了地热异常的分布范围。综合热红外遥感地热异常和遥感地质解译及野外实地调查所获得的地质、构造、地形地貌等信息,建立有利于形成地下热水的信息模式,以指导实际寻找未知区域地下热水工作。上述实例说明,该技术方法切实可行,值得进一步研究和推广。

The exploitation of geothermal resource has very important significance to make the best use of clean energy sources, play down the strain in energy sources and develop circulatory economy. At present, the traditional geophysical exploration method of geothermal resource has the disadvantages of long period and large investment resulted by the anomalies in gravity, magnetism and electricity. It is likely to appear large risk investment or blind mining. However, the exploitation of geothermal resource based on modern remote sensing technique that uses infrared wave band has the characteristics of speediness, large area and lower cost in geothermal information extraction. Using relative data processing method, we carried through remote sensing geological interpretation. According to the differences of ground object radiation temperature reflected by earth satellite infrared remote sensing data, we enhanced effects in band difference algorithm and HIS (HLS) color switch in order to distill the distribution of geothermal anomaly. Finally, based on an information pattern, we got the geothermal area through combining remote sensing geological interpretation with information in geological structure and landform, and directed the searching of geothermal water in unknown region. This technique is scientific, valid, and ought to be applied in other regions.