基于无人机热红外的山区地热资源靶区圈定
李冰川 , 唐广龙 , 赵恒谦 , 谢吾 , 陶右鹏 , 韩梦云 , 徐一鸣 , 胡浩 , 吴扬
地球科学 ›› 2026, Vol. 51 ›› Issue (6) : 2433 -2444.
基于无人机热红外的山区地热资源靶区圈定
UAV Thermal Infrared Geothermal Target Area Delineation for Shallow Geothermal Resources
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针对卫星热红外遥感在地热探测中存在空间分辨率低、易受太阳辐射影响等问题.研究依托DJI Mavic 3T无人机平台,获取研究区高分辨率真彩色与热红外影像.并基于DJI Thermal SDK建立自动化地表温度反演流程,得到无人机地表温度结果.通过现场温度实测数据验证,无人机温度结果与实测点位温度变化趋势具有良好一致性;将无人机热红外影像重采样至30 m后,与 Landsat⁃8 TIRS温度反演结果在空间分布上有较强的一致性.基于提出的“十字型”与“一字型”地热靶区圈定模式,结合研究区构造格局与热异常分布规律,共识别出6处潜在地热靶区,并综合米地温实测数据与既有地质资料对其地热成因进行了分析.研究表明,无人机热红外技术能够在复杂山地环境中实现高精度地热异常识别,为小尺度地热靶区圈定、资源潜力评价提供重要技术支撑.未来需引入多深度米地温数据与浅层热扩散模型,以增强热异常与深部热源之间的定量联系.
In view of the low spatial resolution and strong susceptibility to solar radiation effects of satellite-based thermal infrared remote sensing in geothermal exploration, this study employs a DJI Mavic 3T unmanned aerial vehicle to acquire high-resolution true-color and thermal infrared imagery over the study area. An automated land surface temperature retrieval workflow was developed based on the DJI Thermal SDK to obtain UAV-derived surface temperature data. Validation using in situ temperature measurements demonstrates that the UAV-retrieved temperatures exhibit a high degree of consistency with the observed temperature variation trends at ground sampling points. After resampling the UAV thermal infrared imagery to 30 m, the retrieved temperatures show strong spatial agreement with those derived from Landsat-8 TIRS data. Based on the proposed “cross-shaped” and “linear” geothermal target delineation patterns, six potential geothermal targets were identified by integrating the regional structural framework with the spatial distribution characteristics of thermal anomalies. Furthermore, the geothermal genesis of the delineated targets was analyzed through the combined use of measured shallow ground temperature data and existing geological information. The results indicate that UAV-based thermal infrared technology enables high-precision identification of geothermal anomalies in complex mountainous terrains, providing effective technical support for small-scale geothermal target delineation and resource potential assessment. Future work should incorporate multi-depth ground temperature measurements and shallow heat diffusion models to strengthen the quantitative linkage between surface thermal anomalies and deep geothermal heat sources.
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河北省地矿局地质科技项目(4540601YBNYNA6)
中国矿业大学(北京)中央高校基本科研业务费专项资金项目(2025JCCXDC01)
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