Fig. 1.
AVHRR (Advanced Very High-Resolution Radiometer) imagery for 19 November 2008, 05:40 UTC.
Fig. 2.
Same as Fig. 1, but for 20 November 2008, 11:22 UTC.
Fig. 3.
Azimuth and amplitude (Logarithmic scale) at the four stations during the period 19–25 November 2008.
Fig. 4.
AVHRR (Advanced Very High-Resolution Radiometer) imagery, plus direction of arrival of the infrasound detections and duration of the signal for 19 November 2008 at (a) 01:38 UTC; (b) 04:59 UTC. (Note that the arrow at Uppsala indicates the arbitrary scale of 100 s). The length of the arrows is scaled to the duration of the detection plus 100 s.
Fig. 5.
Same as Fig. 4 but for 20 November 2008 at (a) 11:22 UTC; (b) 13:03 UTC; (c) 19:47 UTC; (d) 21:27 UTC.
Fig. 6.
Same as Fig. 4 but for 21 November 2008 at (a) 01:17 UTC; (b) 11:15 UTC; (c) 19:24 UTC.
Fig. 7.
AMSU-B channel 4 Brightness Temperature (in K) sequence for 20 November at around 09:00 UTC (a), 12:00 UTC (b), 18:00 UTC (c), and 21 November at 09:00 UTC (d), 18:00 UTC (e).