Satellite images showing actual changes in deposited material, marked by grey areas (Graphic: MVO, images courtesy of NASA)
NSAS and MVO published a comparision of two satellite images taken on 17 Mar 2007 and a recent one from 21 Feb 2010. The dramatic changes to the landscape including the extension of the eastern coastline near the former Bramble airport are spectacular.
Since the major dome collapse on February 11, very little activity has been observed at the lava dome of Soufrière Hills volcano.
Fri, 12 Feb 2010, 13:08
A partial dome collapse occurred at Montserrat's Soufrière Hills volcano on Feb 11 at around 1 pm local time. Large pyroclastic flows travelled to the NE and reached the sea. A column of ash rose to at least 12 km.
Read allWed, 10 Feb 2010, 19:22
Our correspondant from Costa Rica reports two phreatic eruptions from Poás volcano's crater lake on the morning of Feb 9.
Sat, 23 Jan 2010, 07:36
A sudden increase of gas emission from the new vent in Turrialba's crater since the morning of 20 Jan prompted the authorities to suspend agricultural activities in the immediate areas around the volcano.
Read allFri, 22 Jan 2010, 22:23
Our correspondant in Costa Rica reports a beautiful phreatic eruption at Poas volcano today at noon time. This is the second eruption (after the one on 25 Dec 09) in a short time span.
Thu, 21 Jan 2010, 10:34
MVO reported that during 8-15 January activity from the Soufrière Hills lava dome increased significantly. One explosion on 8 January and two on 10 January generated ash plumes that rose to altitudes of 5.5-7.6 km (18,000-25,000 ft) a.s.l. Ash fell in occupied areas to the NW, along with lapilli fall on 10 January. The explosions occurred from an area on the NE side of the volcano. Pyroclastic flows from column collapses moved rapidly NE (down Whites Bottom and Tuitts Ghaut), NW (down Tyers Ghaut and Belham Valley), W (down Gages Ghaut), and the SE (down the Tar River Valley). After the explosions activity decreased until 12 January, when cycles of increased numbers of rockfalls, pyroclastic flows, and ash venting were noted.
Read allSun, 10 Jan 2010, 11:20
2 large earthquakes magnitude 7.2 and 6.5 occurred 88 km NW of Kavachi volcano at 9:36 and 9:48 am local time on 4 January 2010.
Read allFri, 8 Jan 2010, 19:42
Nyamuragira's eruption continues, but the lava output seems to decline. After 5 days, the new lava flows have traveled 21 kilometers and approached the road from Goma to Sae within 7 km. If the eruption continues, the flows may be able to cut the road.
Read allFri, 8 Jan 2010, 17:26
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The Santiaguito lava dome complex with a typical ash eruption in late Dec 2009. (Photo: Y. Chebli)
During our pilot expedition to the volcanoes of Guatemala in Dec 2009, Santigaguito lava dome was observed between 25-28 Dec. The lava dome produced ash eruptions roughly every 0.5-3 hours with plumes reaching up to 300-1000 m elevation. On one occasion, a small pyroclastic flow was observed travelling down on the SW side of the lava dome.
Fri, 8 Jan 2010, 17:16
Turrialba volcano started erupting ash from one of tis summit craters on the morning of 4 January.
Read allMon, 4 Jan 2010, 15:35
It is reported that Galeras volcano erupted on santurday 2nd January. There are no reports about destructions or victims.
Mon, 4 Jan 2010, 15:21
Nyamuragira volcano (often also spelled Nyamulariga) erupted on Saturday 2nd January. The eruption was located on a fissure on the E flank where violent lava fountains from 4 vents along a new fissure were feeding a new large lava flow advancing towards the Goma-Sake road. Due to armed rebels hiding in the area, access to the eruption is not safely possible.
Sun, 3 Jan 2010, 00:37
Piton de la Fournaise volcano greets the new year with its first eruption in 2010 on 2 January. A fissure vent inside the Dolomieu summit crater erupted lava fountains and a lava flow contained inside the crater, deepened by the large eruption in 2008. The eruption followed a gradual increase inseismic activity since Dec 28. The last, very short-lived eruption happened just about 3 weeks ago, and it seems likely that Piton de la Fournaise has entered a period of frequent but short eruptions, fed by dikes in its highly fractured summit zone, forming of a relatively permeable central plumbing system.
