Eruptive activity at Chaiten volcano in Chile was stable on 27th February. An eruption column rose to a height of less than 2 km. During the day there were minor collapses of the spine of the dome. The collapse events led to an increase in ash content of the plume. Small dome collapses were observed [...]
Eruptive activity at Chaiten volcano in Chile remains unchanged. The southeast side of the summit lava dome remains unstable, and is liable to collapse. Dome growth continues, and a steep pinnacle has formed on the south side of the dome. Preliminary data indicates temperatures of about 270 º C at the pinnacle, and 200 º [...]
An overflight of Chaiten volcano on 24th of February revealed more details about the 19th February dome collapse. The collapse escarpment is oriented approximately southwest, with a major axis of approximately 500 m and maximum height of the escarpment of 200 m. The area of collapse is located in the southwest sector of the dome [...]
After the dome collapse at Chaiten volcano, Chile, on 19th February, seismicity returned to lower levels. The collapse mobilised a large amount of material south into Chaiten River valley. An estimated 30 million tons of material collapsed from the dome, which present a lahar hazard to Chaiten town. More on [...]
On Tuesday 17th February there were 9 earthquakes between magnitude 3.5 and 3.9 measured at Chaiten volcano in Chile. On Wednesday 18th there were 13 earthquakes between magnitude 3.6 and 3.9. On Thursday February 19 from 10:28 hrs to 13:46 hrs there were a swarm of earthquakes with magnitudes 3.6 to 4.2, with depths of [...]
Continue reading about Chaiten Volcano Eruption 19th February 2009, Chile – John Seach
An eruption occurred at Galeras volcano, Colombia on 20th February 2009 at 7:05 am, local time. The eruption was accompanied by shock waves, and and vibrations in several villages located in the catchment area of the volcano. There are confirmed reports that the eruption was heard in the city of Popayan, over 150 km NNE [...]
Continue reading about Galeras Volcano, Colombia – John Seach
An explosive eruption occurred at Chaiten volcano in Chile yesterday. A flyover of the volcano revealed a fracture in the lava dome, which had partially collapsed. Large quantities of gases and pyroclastic material were observed. About 160 residents were evacuated from Chaiten town, 10 km from the volcano. Most of the residents of Chaiten town [...]
A burst of volcanic tremor occurred at Redoubt volcano, Alaska on Thursday 5th February at 11:18 am (local time). The tremor lasted 4 minutes and was the most intense since January 30th. A second episode of volcanic tremor occurred just after 3:00 PM on Wednesday and lasted for about 30 minutes. No eruption accompanied the [...]
Seismicity remains elevated at Redoubt Volcano in Alaska. Melting of the glacier has produced a 200 m wide hole, which is emitting gas. The Federal Aviation Administration has issued a temporary flight restriction for a 10-mile radius around Redoubt, from ground level to 60,000 feet. During the last eruption in 1989, an aircraft flew through [...]
Asama volcano in Japan erupted today at 1:51 am, local time, sending ash to a height of 1.6 km, and ejecting rocks 1 km from the crater. Ashfall was reported in Tokyo, 145 km SE of the volcano.More on Asama Volcano…