Pavlof LANDSAT-8, June 8 2014 at 08:16 UTC

Two overpasses from LANDSAT-8 have captured the thermally active flows from Pavlof volcano, see below. These two passes at 08:16 UTC and 21:45 UTC, equate to a daytime and nighttime pass at local time in Alaska. Here i will show and describe the data from 08:16 UTC

08:16 UTC. Below is the thermal signal from Band 7 at SWIR. This shows a thermal signal reaching 4.85 km from the summit, down the NNW flank of the volcano. A similar signal is seen in the TIR channel, Band 10. These two are viewed with north up.

Band 7 SWIR LANDSAT-8 data, 08:16 UTC June 8 2014. 

Band 10 TIR LANDSAT-8 data, 08:16 UTC June 8 2014.

Displaying these in Google Earth and one is able to see that the thermal feature shows up for a greater distance from the summit in the SWIR than in the TIR.

Band 7 in GE from LANDSAT-8 data, Pavlof volcano, June 8 2014 at 08:16 UTC. Looking to the south.

Band 7 in GE from LANDSAT-8 data, Pavlof volcano, June 8 2014 at 08:16 UTC. Here the hot thermal target is only feature displayed. Looking to the south.

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Band 10 in GE from LANDSAT-8 data, Pavlof volcano, June 8 2014 at 08:16 UTC. Looking to the south.

Band 10 in GE from LANDSAT-8 data, Pavlof volcano, June 8 2014 at 08:16 UTC. Here the hot thermal target is only feature displayed. Looking to the south.

Band 7 and 10 in GE from LANDSAT-8 data, Pavlof volcano, June 8 2014 at 08:16 UTC. Here the hot thermal target is only feature displayed. The black circle represents the portion of the flow only seen in the SWIR. This is likely the hottest portion of the flow, given the wavelengths for the two bands. Looking to the south.

The next post will describe the 21:45 UTC data.