Css. Reddy et al., NIGHTTIME TM SHORT-WAVELENGTH INFRARED DATA-ANALYSIS OF BARREN ISLANDVOLCANO, SOUTH ANDAMAN, INDIA, International journal of remote sensing, 14(4), 1993, pp. 783-787
Landsat TM short wavelength infrared data can be used to estimate and
monitor active volcano temperatures of 150-degrees-C and above. Howeve
r, during the daytime, the total measured radiance from a volcano in s
hort wavelength infrared region consists of both reflected (due to Sun
) and emitted (due to molten lava) radiance components. This problem c
an be overcome by using night-time data because, in the absence of sol
ar radiation, the signal recorded by the sensor consists only of therm
al radiation emitted by the erupting volcano. Thus, night-time TM data
of 8 July 1991, have been used to study the recent volcanic eruption
in Barren Island.