February 2006
Night of 25/26 February - The view was clear and there were a number of small
rock falls/outbursts visible during the night. 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 - showing images of the glow (size 249 kB)
Flash movie - enhanced images of the glow, superimposed on a background image of
the mountain (size 273 kB)
Night of 24/25 February - There was an outburst of activity on the lavadome
at 19:17, which corresponded with a
M3.0 tremor
recorded on the
webicorders at the same time. Following the tremor multiple hotspots were
visible for several hours. The first movie below shows the processed images at
the approximate brightness as seen in the Volcanocam images and the second shows
the same 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 - showing images of the glow (size 227 kB)
Flash movie - images of the glow, superimposed on a background image of the
mountain (only the area around the crater animated) (size 264 kB)
Night of 23/24 February - The glow from the lavadome was visible through
breaks in the clouds between 21:45-21:55, 22:45-23:35 and then from 05:15 until
sunrise. There was a slightly larger tremor at
01:20,
but the clouds unfortunately obscured the view around that time. I have edited
out most the frames in which the glow didn't appear, to provide a smaller and
hopefully more interesting animation. The first movie below shows the processed
images at the approximate brightness as seen in the Volcanocam images and the
second shows the same 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 - showing images of the glow (size 111 kB)
Flash movie - images of the glow, superimposed on a background image of the
mountain (only the area around the crater animated) (size 146 kB)
Night of 19/20 February - The glow was visible from sunset until just before
sunrise, when clouds obscured the view. The glows were fairly consistent
throughout the night, with no major outbursts recorded. The first animation
below shows the processed images at the approximate brightness as seen in the
Volcanocam images and the second shows the same 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 - showing images of the glow (size 214 kB)
Flash movie - images of the glow, superimposed on a background image of the
mountain (only the area around the crater animated) (size 243 kB)
Night of 18/19 February - The view was clear all night and there were a
number of small rock falls visible during the night. 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 - showing images of the glow (size 283 kB)
Flash movie - enhanced images of the glow, superimposed on a background image of
the mountain (size 263 kB)
Night of 17/18 February - The sky was clear and the incandescent glow from
the lavadome was visible throughout the night. Between 02:00 and 03:00 the
crater rim was partially illuminated, presumably by the moon reflecting off the
snow and ice in the crater. 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 - showing images of the glow (size 383 kB)
Flash movie - enhanced images of the glow, superimposed on a background image of
the mountain (size 275 kB)
Night of 16/17 February - Apart from a brief time in the middle of the night,
the glow from the lavadome was visible from sunset to sunrise. There were
several small outbursts/rock falls during the night. The first animation below
shows the processed images at the approximate brightness as seen in the
Volcanocam images and the second shows the same 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 - showing images of the glow (size 318 kB)
Flash movie - images of the glow, superimposed on a background image of the
mountain (only the area around the crater animated) (size 268 kB)
Night of 15/16 February - The crater and lavadome were obscured by clouds
briefly after sunset, but emerged at 19:23 and were visible for the rest of the
night. There were several small outbursts related to small rock falls on the
lavadome, with notable events occurring at 01:48 and 05:24. The latter
corresponding to a larger tremor recorded on the
SHW
webicorder. The first animation below shows the processed images at the
approximate brightness as seen in the Volcanocam images and the second shows the
same 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 - showing images of the glow (size 425 kB)
Flash movie - images of the glow, superimposed on a background image of the
mountain (only the area around the crater animated) (size 279 kB)
Night of 14/15 February - The clouds lifted at 20:00 to reveal a very active
lavadome last night. At 20:21 there was a large outburst, corresponding to a
tremor recorded on the
SHW
webicorder at precisely the same time. There were numerous small rock falls
and outbursts that followed through the night and there was an active plume
illuminated by the bright moon. The first animation below shows the processed
images at the approximate brightness as seen in the Volcanocam images and the
second shows the same 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 - showing images of the glow (size 479 kB)
Flash movie - images of the glow, superimposed on a background image of the
mountain (only the area around the crater animated) (size 280 kB)
Night of 12/13 February - There were a number of small rock falls during the
night, but the clouds rolled in and obscured the view at 23:30 until this
morning. The first animation below shows the processed images at the approximate
brightness as seen in the Volcanocam images and the second shows the same 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 - showing images of the glow (size 368 kB)
Flash movie - images of the glow, superimposed on a background image of the
mountain (only the area around the crater animated) (size 191 kB)
Night of 11/12 February - The view was reasonably clear from sunrise until
around 02:00 this morning when clouds obscured the view for most of the time
until sunrise. The first animation below shows the processed images at the
approximate brightness as seen in the Volcanocam images and the second shows the
same 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 - showing images of the glow (size 654 kB)
Flash movie - images of the glow, superimposed on a background image of the
mountain (only the area around the crater animated) (size 297 kB)
Night of 10/11 February - The view was clear and the glows from the lavadome
were visible throughout the night. There were only a couple of very small
outbursts with the glows flickering away fairly uniformly through the night. The
first animation below shows the processed images at the approximate brightness
as seen in the Volcanocam images and the second shows the same 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 - showing images of the glow (size 389 kB)
Flash movie - images of the glow, superimposed on a background image of the
mountain (only the area around the crater animated) (size 277 kB)
Night of 09/10 February - There were numerous small rock falls visible during
the night and one large fall causing a bright outburst at 06:00 - after which
the entire lavadome was illuminated briefly. This event followed a larger tremor
recorded on the HSR webicorder at
05:58.
The moon, only a couple of days away from full, also illuminated the mountain
for most of the night. The first animation below shows the processed images at
the approximate brightness as seen in the Volcanocam images and the second shows
the same 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 - showing images of the glow (size 434 kB)
Flash movie - images of the glow, superimposed on a background image of the
mountain (only the area around the crater animated) (size 304 kB)
Night of 08/09 February - The sky was clear all night and the two most
prominent glows from the lavadome remained fairly consistent over the course of
the evening. There were a couple of small rock falls causing brief outbursts.
The first animation below shows the processed images at the approximate
brightness as seen in the Volcanocam images and the second shows the same images
superimposed over a daytime image of the crater for reference (the glows are
bright enough to be seen clearly on the stacked images and processing them
further obscured too many details). The animation speed is set at 6 fps
(equivalent of half an hour in real time per second).
Flash movie - showing images of the glow (size 352 kB)
Flash movie - images of the glow, superimposed on a background image of the
mountain (only the area around the crater animated) (size 234 kB)
Night of 07/08 February - The lavadome was quite active last night, with
numerous small outbursts caused by rock falls. There was also a brighter
outburst that was began at 00:47, which followed a larger tremor at
00:43.
Unfortunately, clouds rolled in around 02:30 and obscured the view from then on.
The first animation below shows the processed images at the approximate
brightness as seen in the Volcanocam images and the second was further enhanced
to emphasise the brightness of the glows from the crater. The animation speed is
set at 6 fps (equivalent of half an hour in real time per second).
Flash movie - showing images of the glow (size 352 kB)
Flash movie - enhanced images of the glow, superimposed on a background image of
the mountain (only the area around the crater animated) (size 234 kB)
Night of 06/07 February - The sky was again clear and multiple glows were
visible overnight, as well as numerous small outbursts caused by rock falls. The
USGS has posted some
recent images
that clearly show the result of the rock slides from the lavadome. The first
animation below shows the processed images at the approximate brightness as seen
in the Volcanocam images and the second was further enhanced to emphasise the
brightness of the glows from the crater. The animation speed is set at 6 fps
(equivalent of half an hour in real time per second).
Flash movie - showing images of the glow (size 332 kB)
Flash movie - enhanced images of the glow, superimposed on a background image of
the mountain (only the area around the crater animated) (size 288 kB)
Night of 05/06 February - The sky was clear and the glows from the lavadome
were active throughout the night. The two main hotspots are clearly visible,
with several small outbursts resulting from rock falls adding to the display. A
notable outburst occurred at 3:23. The first animation below shows the processed
images at the approximate brightness as seen in the Volcanocam images and the
second was further enhanced to emphasise the brightness of the glows from the
crater. The animation speed is set at 6 fps (equivalent of half an hour in real
time per second).
Flash movie - showing images of the glow (size 292 kB)
Flash movie - enhanced images of the glow, superimposed on a background image of
the mountain (only the area around the crater animated) (size 271 kB)
Night of 02/03 February - The clouds finally lifted at 04:30 this morning to
reveal two bright hotspots and a third that appeared intermittently. The first
animation below shows the processed images at the approximate brightness as seen
in the Volcanocam images and the second was further enhanced to emphasise the
brightness of the glows from the crater. Only the frames from 4:30 until just
before sunrise are shown, and I have slowed the speed down to 6 fps (equivalent
of half an hour in real time per second).
Flash movie - showing images of the glow (size 94 kB)
Flash movie - enhanced images of the glow, superimposed on a background image of
the mountain (only the area around the crater animated) (size 100 kB)