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Wed, 22 Jul 2009, 09:04
The activity at Anak Krakatau has been quieting down to a few small explosions and the growth of a new lava dome in the new crater has slowed.
Sat, 11 Jul 2009, 15:05
A powerful vulcanian explosion in its initial stage showing the expanding explosion of the pressurized plug. (2 July 09)
After a 36 hrs pause in activity between the evening of 30 June and the morning of 2 July, Anak Krakatau started again with powerful vulcanian explosions. The largest of these explosions were preceded by an inflation and shaking of the active cone or lava dome, triggering rock-slides from its flanks, until the plug gave way in giant explosions ejecting a rapdly expanding mass of red-hot lava, solid rocks, and large amounts of ash, forming plumes of up to 2 km heights. Most of these explosions ejected many blocks into the sea and the forest of Anak Krakatau, and on one location, our boat at around 500m distance from the shore, had to make a quick escape from falling blocks, some of which nevertheless fell beyond the boat, but fortunately did not hit...
Fri, 10 Jul 2009, 07:30
The effusive eruption at Etna's NE flank has ended on the evening of 6 July after 14 months of moderate to weak lava emission, Boris Behncke reports on his flickr website. ...more
Mon, 15 Jun 2009, 05:37
Strombolian activity at Anak Krakatau on 6 June 2009
The activity of Anak Krakatau continues with no sign of weakening. As observed during a recent expedition from 4-8 June, strong strombolian activity from the new vent between the old summit vent and the 2007 vent on the S side of the summit cone has filled the collapse crater from 2007 and throws incandescent blocks and bombs to up to 500-700 m above the vent and reaching severl hundreds meters distance. At times, this activity is similar to small lava fountains and at other times, eruptions are more vulcanian-type, rich in ash, producing plumes up to 1 km high. The latter are often accompanied by loud blasts that can be heared many kilometers away and give impressive echoes on the walls of the surrounding caldera. Indivudal explosions are following each other at invervals of 2-5 and rarely more minutes. Photos of this activity can be found here
Tue, 2 Jun 2009, 11:17
A moderately powerful explosion at Yasur volcano (26 May 2009)
During our expedition on Tanna Island, we observed Yasur during 25-29 May. Activity was a low to moderate levels in that period and only 3 vents in the western crater were active although glow from the eastern crater was seen. Near-continuous spattering was seen from the westernmost vent, and more powerful ejections from the other two vents were observed at intervals of 10-15 minutes, throwing incandescent lava bombs to 100-150 m height. Only small amounts of ash were usually produced. ...more
Fri, 8 May 2009, 07:46
The activity of Anak Krakatau is increasing. Direct observations of the crater in late April revealed strong strombolian activity from a vent inside the crater of the 2007-2008 eruption building up a new scoria cone inside this crater. We are planning to revisit the volcano in the first week of June for more observations.
Sat, 2 May 2009, 08:27
A strong explosive eruption took place at Sheveluch volcano on May 1st, 2009, sending an ash cloud to 5 km above the volcano. The eruption followed a week of heightened seismicity and might be the start of a stronger eruptive phase.
Mon, 27 Apr 2009, 15:44
A new eruption at Slamet volcano started around 24 April, 2009, last week. Observers report strombolian explosions and ash clouds rising several hundreds of meters from the summit crater. ...more
Mon, 13 Apr 2009, 21:52
Since Friday last week, access to the summit of Stromboli is repopened. Strong activity from several vents at the crater continues.
Mon, 13 Apr 2009, 07:57
It is reported, that strong eruptions at La Cumbre volcano set the rare species of animals on the Galapagos island in danger. Lava is flowing to the sea and strong eruptions occur. ...more
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