Abstract
Mines show spectral resemblance with other landscape features; hence, their identification with satellite imagery can be difficult. To address this, land surface temperature (LST) derived from thermal infrared images of satellite remote sensing data was used to differentiate mines. Higher surface temperatures were observed for mined land than other classes (built-up and fallow land) in nighttime data. This indicates that the increased surface temperature of the other classes is due to solar heating while geothermal and pyrite oxidation contribute warmth at mined sites. Nighttime LST can be used to locate mines and their spatial extent despite the low spatial resolution of satellite data. It also confirms a mine’s heat island phenomenon due to geothermal energy.
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