The ASTER sensor was able to capture the thermal signal and steaming from the Holuhraun fissure, near Bardarbunga, on Sept 23 2014 at 12:37 UTC. Below is a RGB image of the visible and VNIR channels, 3N (Band 3 nadir), 2 and 1. Note the steaming to the east, and thermal signals at the most active portions of the fissure.
RGB of ASTER channels 3N, 2 and 1. Sept 23 2014 at 12:37 UTC.
Google Earth view of the ASTER channels 3N, 2 and 1. Sept 23 2014 at 12:37 UTC.
Examining the thermal infrared data from ASTER and there is a lot more of the fissure and flow captured. The highest temperature features in the TIR data match to the thermally active features in the visible/VNIR data. Note the warmer flow to the north-east seen in the TIR data. This is now 17 - 18 km in length. The portion of the fissure that has saturated the ASTER TIR data is around 4 - 5 km in length.
TIR image of ASTER data. Sept 23 2014 at 12:37 UTC.
Google Earth view: TIR image of ASTER data. Sept 23 2014 at 12:37 UTC.
Thanks to NASA and the ASTER Urgent Request Protocol (URP) system for access to this data.
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