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Archives September 2006

Night of 29/30 September - The hotspot on the front flank of the lavadome was active and visible intermittently during the night. There was one particularly bright outburst of activity at 02:09, which did not correspond to any obvious seismic activity (e.g. see RAFT webicorder on the new dome).
The animation below shows the processed images of the mountain which have been enhanced to maximise the brightness of the glow and  superimposed over a daytime image of the crater for reference. The animation speed is set at 6 fps (equivalent of half an hour in real time per second).
Flash movie - enhanced images of the glow, superimposed on a background image of the mountain - only the area around the crater is animated (size 286kB)

Night of 28/29 September - The glow from the lavadome flickered on and off throughout the night with variable intensity. There were no particularly large outbursts corresponding with any large tremors.
The animation below shows the processed images of the mountain which have been enhanced to maximise the brightness of the glow and  superimposed over a daytime image of the crater for reference. The animation speed is set at 6 fps (equivalent of half an hour in real time per second).
Flash movie - enhanced images of the glow, superimposed on a background image of the mountain - only the area around the crater is animated (size 286kB)

Night of 27/28 September - The hotspot on the front of the lavadome was active at sunset and there were several small bright episodes during the night. There was also a small outburst from the spine at the top of the lavadome at 00:40. It is a little difficult to discern in the animated images, but clearly visible in this single processed image. There were a couple of larger tremors just before and just after midnight, which may have been associated with a rock fall from the top of the lavadome (e.g. see YELL webicorder trace).
The animation below shows the processed images of the mountain which have been enhanced to maximise the brightness of the glow and  superimposed over a daytime image of the crater for reference. The animation speed is set at 6 fps (equivalent of half an hour in real time per second).
Flash movie - enhanced images of the glow, superimposed on a background image of the mountain - only the area around the crater is animated (size 278kB)

Night of 25/26 September - There was a bright outburst of activity from the hotspot on the front of the lavadome at 20:41 and the glow from the hotspot was then visible for the rest of the night.
The animation below shows the processed images of the mountain which have been enhanced to maximise the brightness of the glow and  superimposed over a daytime image of the crater for reference. The animation speed is set at 6 fps (equivalent of half an hour in real time per second).
Flash movie - enhanced images of the glow, superimposed on a background image of the mountain - only the area around the crater is animated (size 249kB)

Night of 19/20 September - The clouds parted some time before 03:00 and the glow from the front of the lavadome was faintly visible until sunrise.
The animation below shows the processed images of the mountain which have been enhanced to maximise the brightness of the glow and  superimposed over a daytime image of the crater for reference. The animation speed is set at 6 fps (equivalent of half an hour in real time per second) - only the images between 03:00 and sunrise are included.
Flash movie - enhanced images of the glow, superimposed on a background image of the mountain - only the area around the crater is animated (size 103kB)

Night of 16/17 September - The hotspot on the front of the lavadome was visible from just after 21:30 until around 05:00 - with a large and bright outburst occurring at 00:24 and a smaller one at 02:10. There was also a very brief outburst from the top of the lavadome at 04:25. None of these events appear to correspond to any seismic signals (e.g. see webicorder trace from the lavadome).
The animation below shows the processed images of the mountain which have been enhanced to maximise the brightness of the glow and  superimposed over a daytime image of the crater for reference. The animation speed is set at 6 fps (equivalent of half an hour in real time per second).
Flash movie - enhanced images of the glow, superimposed on a background image of the mountain - only the area around the crater is animated (size 235kB)

Night of 11/12 September - The hotspot on the front of the lavadome was visible intermittently throughout the night. There was a small outburst which occurred just to the left of the hotspot at 23:04.
The animation below shows the processed images of the mountain which have been enhanced to maximise the brightness of the glow and  superimposed over a daytime image of the crater for reference. The animation speed is set at 6 fps (equivalent of half an hour in real time per second).
Flash movie - enhanced images of the glow, superimposed on a background image of the mountain - only the area around the crater is animated (size 236kB)

Night of 10/11 September - The glow from the hotspot on the front flank of the lavadome was visible intermittently during the night - possibly due to clouds or dust partly obscuring the view. There were no major outbursts, although the brightening of the glow at 04:13 was a little more intense than the rest of the evening.
The animation below shows the processed images of the mountain which have been enhanced to maximise the brightness of the glow and  superimposed over a daytime image of the crater for reference. The animation speed is set at 6 fps (equivalent of half an hour in real time per second).
Flash movie - enhanced images of the glow, superimposed on a background image of the mountain - only the area around the crater is animated (size 246kB)

Night of 09/10 September - Clouds obscured the view for a while in the early evening, but the hotspot on the front of the lavadome was visible for much of the night. Despite some seismic activity in the crater just after midnight and a triple tremor at 02:23 (e.g. see YELL webicorder) - no major outbursts were visible on the processed images.
The first animation below shows the full frame processed images of the mountain which have been enhanced to maximise the brightness of the glow and the second shows those images superimposed over a daytime image of the crater for reference. The animation speed is set at 6 fps (equivalent of half an hour in real time per second).
Flash movie - enhanced images of the glow   (size 511kB)
Flash movie - enhanced images of the glow, superimposed on a background image of the mountain - only the area around the crater is animated (size 254kB)

Night of 07/08 September - The largest full moon of the year provided illuminated the crater and showed a large cloud of material filling the crater for a large part of the night. It is not clear if this was dust/ash or just clouds. But does help explain the intermittent views of the hotspot on the lavadome. The first movie shows the cloud quite clearly.
The first animation below shows the full frame processed images of the mountain which have been enhanced to maximise the brightness of the glow and the second shows those images superimposed over a daytime image of the crater for reference. The animation speed is set at 6 fps (equivalent of half an hour in real time per second).
Flash movie - enhanced images of the glow   (size 673kB)
Flash movie - enhanced images of the glow, superimposed on a background image of the mountain - only the area around the crater is animated (size 316kB)

Night of 06/07 September - The small hotspot lower down the lavadome glowed fairly consistently through the night as the crater was illuminated by the near to full moon (tonight is the largest moon of the year - read more on Spaceweather.com). There appeared to be a small ash release around 01:04 which is visible on the images in the first movie below. There was also another bright outburst from the spine at the top of the growing lavadome at 04:39 which slowly faded until sunrise and corresponded with a small broad seismic feature on the Yellow Rock webicorder chart.
The first animation below shows the processed images at the approximate brightness as seen in the Volcanocam images and the second shows enhanced images superimposed over a daytime image of the crater for reference. The animation speed is set at 6 fps (equivalent of half an hour in real time per second).
Flash movie -  images of the glow   (size 384kB)
Flash movie - enhanced images of the glow, superimposed on a background image of the mountain - only the area around the crater is animated (size 272kB)

Night of 05/06 September - Two hotspots were visible on last night's images! The first was the hotspot on the lower front flank of the lavadome and this was visible intermittently throughout the night. The second was a bright outburst from the spine at the top of the lavadome that occurred at 03:17 this morning.
The first animation below shows the processed images at the approximate brightness as seen in the Volcanocam images and the second shows enhanced images superimposed over a daytime image of the crater for reference. The animation speed is set at 6 fps (equivalent of half an hour in real time per second).
Flash movie -  images of the glow   (size 409kB)
Flash movie - enhanced images of the glow, superimposed on a background image of the mountain - only the area around the crater is animated (size 297kB)

Night of 04/05 September - The glow from the lavadome was visible for much of the night and brighter than last night. The glow visible in the crater is due to the moon illuminating the dust in the crater.
The animation below shows the processed images of the mountain which have been enhanced to maximise the brightness of the glow and  superimposed over a daytime image of the crater for reference. The animation speed is set at 6 fps (equivalent of half an hour in real time per second).
Flash movie - enhanced images of the glow, superimposed on a background image of the mountain - only the area around the crater is animated (size 251kB)

Night of 03/04 September - It is difficult to tell from the images, but there may have been some dust blowing around the crater last night obscuring the view. The glow from the hotspot on the lavadome was intermittently visible, but very faint, especially in the hours before sunrise.
The animation below shows the processed images of the mountain which have been enhanced to maximise the brightness of the glow and  superimposed over a daytime image of the crater for reference. The animation speed is set at 6 fps (equivalent of half an hour in real time per second).
Flash movie - enhanced images of the glow, superimposed on a background image of the mountain - only the area around the crater is animated (size 256kB)

Night of 02/03 September - The hotspot visible for the last week was intermittently visible on last nights images.
The animation below shows the processed images of the mountain which have been enhanced to maximise the brightness of the glow and  superimposed over a daytime image of the crater for reference. The animation speed is set at 6 fps (equivalent of half an hour in real time per second).
Flash movie - enhanced images of the glow, superimposed on a background image of the mountain - only the area around the crater is animated (size 239kB)

Night of 01/02 September - The hotspot on the lower front of the lavadome was visible throughout the night. It was slightly brighter than the previous night and flickered away until just prior to sunrise.
The animation below shows the processed images of the mountain which have been enhanced to maximise the brightness of the glow and  superimposed over a daytime image of the crater for reference. The animation speed is set at 6 fps (equivalent of half an hour in real time per second).
Flash movie - enhanced images of the glow, superimposed on a background image of the mountain - only the area around the crater is animated (size 229kB)

Night of 31/01 September - The hotspot that appeared earlier in the week was visible intermittently from sunset until 01:30. It was much fainter than on the last few nights and there were no bright outbursts. The crater is filled with dust this morning - so it is possible that dust was responsible for obscuring the view after 01:30.
The animation below shows the processed images of the mountain which have been enhanced to maximise the brightness of the glow and  superimposed over a daytime image of the crater for reference. The animation speed is set at 6 fps (equivalent of half an hour in real time per second) only the images between sunset and 01:32 are included.
Flash movie - enhanced images of the glow, superimposed on a background image of the mountain - only the area around the crater is animated (size 149kB)