Since 27th October 2009 there has been a marked change in the activity at Galeras volcano in Colombia. There has been a significant decrease in emissions of sulphur dioxide and an increase in earthquakes associated with volcanic overpressure in the system. Galeras has been increased to level 2 alert
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The fourth typhoon to hit the Philippines in a month has forced the evacuation of 10,000 people from around Mayon volcano, due to the threat of lahars. Mayon is the most active volcano in the Philippines and has been erupting small amounts of ash this month. A large eruption in 2006 deposited lava and ash [...]
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An ash emission occurred at Mayon volcano, Philippines at 05;32 hr on Wednesday 28th October 2009. The eruption lasted for one minute, and produced a brown ash plume which rose to a maximum height of 600 meters above the crater and drifted northeast. Over the past 24-hours, the seismic network recorded 13 volcanic earthquakes. There [...]
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A lava flow crossed the former Kalapana road around 1:45 am on 23rd October, 2009, at Kilauea Volcano in Hawaii. The lava flow stopped moving by afternoon, but the road continued to burn, igniting trees in the surrounding kipuka. The lava flows remained active Saturday afternoon and were advancing in a southeast direction from the [...]
On 24th October 2009 at 11:40 pm local time, a magnitude 7.0 earthquake hit 40 km NE of Serua volcano, and 70 km south of Manuk volcano, Indonesia. The earthquake epicentre was located undersea at 6.161°S, 130.346°E, and focus was at a depth of 138 km. No tsunami was generated. Serua volcano last erupted in [...]
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In late October 2009 wildlife rangers on the western slope of Sumbing volcano felt earthquakes, and observed new solfatara, and areas of burnt vegetation.
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Seismic activity has been high at Soufriere Hills volcano, Montserrat during the week 16-23 October 2009. One thousand and nineteen rockfall signals, four hundred and sixteen long period events and four volcano-tectonic earthquakes were recorded during the week. Pyroclastic flows occurred down the White River valley to the south and several have reached the sea. [...]
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Seismic activity has increased at Kaba volcano, Sumatra, Indonesia. On 19th October 2009, 127 shallow volcanic earthquakes were recorded. Continuous tremor occurred on 19th October between 06:40-09:00 hr, and 20th October between 03:00 to 09:00 hr. Visual observations showed thin white emissions rising 50 m above the crater. Ground deformation has been measured across the [...]
The frequency and intensity of seismicity are gradually increasing at Piton de la Fournaise volcano on Reunion. The trend of gradual deformation of the volcano continues, particularly on the north side of Dolomieu and near Soufriere. On Friday 16th October the seismic network recorded one earthquake every seventy seconds, with a maximum magnitude of 3. [...]
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During the week 9-16 October 2009 activity has been high at Soufriere Hills volcano, Montserrat. A new lava dome has been growing at the volcano since 9th October 2009. Seismic activity during the week consisted of 1224 rockfall signals, 382 long period events, and one volcano tectonic earthquake. Pyroclastic flows occurred in all the major [...]
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