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Archived news:

Thursday, Aug 31, 2006

Only two weeks after the end of the July eruption, Piton de la Fournaise volcano started a new eruption on August 30, 11:35 local time.
A very soft "seismic crisis" of about 10 small events occurred at 10:00 in the morning. At 11:35 eruption tremor appeared very slowly and without any further seismicity and a summit eruption started on the south-east-south edge of Dolomieu crater.Scientists of the Reunion University which were on the summit could observe the beginning eruption.Two fissures opened, the first one within Dolomieu crater is very active and a large part of the crater floor was already covered by a lava flow in the afternoon. The second fissure one just outside of Dolomieu crater produced a lava flow on the east flank of Piton de la Fournaise, but ceased its activity in the afternoon. At present eruption tremor is still at a quite high level and a new eruption cone is forming within Dolomieu crater.


This morning at around 8:30 am local time, new eruptive activity was first observed at the SE crater of Etna volcano, which had had its last brief eruption in late July. The onset of new strombolian activity had been preceded by a seismic swarm at around 11pm last night.

Tuesday, Aug 29, 2006

The lava dome at Soufrière Hills continues to grow at moderate rate. No significant pyroclastic flows have occurred over the past weeks.

Saturday, Aug 26, 2006

During 16-22 August, lava from Kilauea continued to flow off of a lava delta into the ocean at the East Lae'apuki and East Ka'ili'ili entries. Incandescence was visible from the East Pond and January vents, South Wall complex, and Drainhole vent in Pu'u 'O'o's crater during most of the reporting period.

Activity at Karymsky continued during 12-18 August, with 60-500 shallow earthquakes occurring daily. Based on interpretations of seismic data, ash plumes reached altitudes of 3.7 km (12,140 ft) a.s.l. According to the Airport Meteorological Center (AMC) in Yelizovo, on 16 August a pilot saw an ash plume rise to ~6.5 km (21,300 ft.) a.s.l. and drift NE. Karymsky remained at Concern Color Code Orange

Ash explosions from Fuego reached 300-800 m above the summit (13,300-15,000 ft a.s.l.) on 16 and 21 August. Explosions of incandescent material on 16, 18, and 21 August produced avalanches that descended 300-500 m SW towards the Ceniza, Taniluyá, and Santa Teresa river valleys.

Friday, Aug 25, 2006
Older satellite photo of Tungurahua volcano at eruptions (source NASA 2004)
Older satellite photo of Tungurahua volcano at eruptions (source NASA 2004)

A large eruption of Tungurahua began on 16 August at 19:00 and continued to 17 August at 02:00, when activity began to diminish.
According to the Instituto Geofísico, seismic activity increased on 16 August and clinometer measurements indicated a bulge on the N flank as compared to 11 August measurements.

Ash-and-gas plumes reached heights of 3 km above the summit (26,300 ft a.s.l.) and drifted W and NW.

About 3,200 people were evacuated from at-risk areas.

On 17 August, about 20 pyroclastic flows traveled NW through the Achupashal, La Hacienda, and Mandur drainages, and NNW towards the Juive and Vazcún drainages.
The Chambo and Puela rivers and several roads to the W and S were blocked by pyroclastic-flow debris. Tephra fall (3 cm in diameter) was reported from several areas in a zone that extended from Penipe in the SW to about 15 km NW.

Ash plumes reached estimated heights of 10 km above the summit (49,000 ft a.s.l.) and covered the central part of Ecuador, forming a cloud ~742 km long and ~185 km wide trending NNW and SSE.

On 18 August, incandescent blocks were ejected from the summit and descended about 1.7 km down the flanks. Based on seismic interpretation, one of the blockages damming part of the Chambo River had been breached.

During 18-19 August, the N flank continued to inflate.

During 20-21 August, steam emissions were observed during breaks in the cloud cover and the N flank exhibited deflation.

On 23 August, two lava flows were identified on the NW slope moving at a slow rate. According to news reports, ash and debris fall caused fires and severe damage to five villages. An estimated 20,000 hectares (50,000 acres) of crops were destroyed. At least five people are dead or missing, and several more were injured. An estimated 4,000 people have been relocated to shelters.

PHIVOLCS reported that explosions from Mayon continued during 16-19 August.
On 17 August, ash-and-steam plumes drifted at least 5.3 km NE and reached the town Calbayog, where light ashfall was reported. Lava extrusion and collapsing lava-flow fronts that produced blocks and small fragments on the SE slopes continued during the reporting period.
On 18 August, the Mibinit/Bonga valley lava flows reached ~6.8 km SE from the summit. The following day, PHIVOLCS estimated that the volume of erupted volcanic deposits was 36 to 41 million cubic meters.

Friday, Aug 18, 2006

The eruption of Tungurahua volcano caused about 60 fatalities. Villages are destroyed and people are lost. The roads around the volcano are closed. The eruptions are strong, throwing hot rocks in great distances causing devastation and volcanic dust destroys the harvest and some forests. A end of this eruption is not in sight. Lava flowing into rivera my cause lahars.


The Piton de la Fournaise volcano, the eruption of which started on July 20, stopped on August 14 at 23:00 local time.
The total output was estimated to about 2 to 3 x10^6 m3 and the debit was particularly small compared to the pre eruptive deformations observed since March and let presume an other eruption before the end of 2006.

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