Tel:
+86-0431-81785188
Geothermal energy is a renewable and clean energy source stored underground in the form of hot water or steam. It has advantages such as being green and environmentally friendly, renewable, abundant, low extraction cost, and minimal pollution, offering significant utilization value and application prospects.
Currently, geothermal detection mainly relies on traditional drilling and geophysical methods. Although these traditional methods can avoid blind exploration and are highly reliable, they also have drawbacks such as long detection periods, high costs, and low efficiency. Thermal infrared remote sensing detection can precisely complement these shortcomings of traditional methods.
Thermal infrared remote sensing technology is a technique for quickly detecting ground temperature. It can obtain large-area ground temperature field information in an instant or relatively short period, boasting advantages such as speed, cost-effectiveness, and extensive detection areas. It has broad application prospects in geothermal resource investigations.
Firstly, by using thermal infrared remote sensing to infer surface temperature, interpret and delineate the high-temperature areas on the surface within the study area. Since there may be false anomalies in the inferred results, these ranges cannot be directly designated as potential geothermal anomaly points. Further analysis combining geological structures and other data is needed to exclude false geothermal anomaly zones, eventually delineating potential geothermal anomaly areas.
The geological survey team, using data primarily from the Resource Satellite-1 02E, combined with other information, employs an improved radiative transfer equation algorithm for surface temperature inversion. By utilizing land cover masks and regression equation models, the effects of human and topographic interferences are excluded. On this basis, thermal infrared remote sensing technology is employed for detailed data collection in geothermal anomaly regions to detect the specific locations of these anomalies.
Combining structural data and comprehensive analysis, surface temperature anomaly regions are delineated and graded, thereby narrowing the scope of conventional geothermal exploration and providing data support for subsequent geophysical techniques.
Currently, the geological survey team has deepened the research on thermal infrared remote sensing technology, mastering the inversion technology of the Resource Satellite-1 02E, enhancing the spatial resolution from the mainstream 90 meters to 15 meters. They have acquired and processed thermal infrared remote sensing data, producing surface temperature maps with 0.3-meter resolution.
The team has studied and summarized techniques for removing surface temperature anomalies caused by human activities and topography, making the inversion results more consistent with geothermal characteristics. They have also developed classification and grading methods for thermal anomaly regions and have verified that satellite remote sensing and drone aerial photography, combined with geological structural analysis, are effective in the preliminary exploration of geothermal resources in mountainous areas.
Using thermal infrared remote sensing as a technological means in geothermal surveys can reduce fieldwork but cannot completely replace conventional geothermal exploration methods. For better application results, interpretation of topographic and geological data must be combined with professional knowledge.