Abstract
Abstract Landsat TM short wavelength infrared data can be used to estimate and monitor active volcano temperatures of 150°C and above. However, during the daytime, the total measured radiance from a volcano in short wavelength infrared region consists of both reflected (due to Sun) and emitted (due to molten lava) radiance components. This problem can be overcome by using night-time data because, in the absence of solar radiation, the signal recorded by the sensor consists only of thermal radiation emitted by the erupting volcano. Thus, nighttime TM data of 8 July 1991, have been used to study the recent volcanic eruption in Barren Island.
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