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mardi, juil. 29, 2008
A new eruption is reported from Reventador volcano. The Ecuadorian Institute of Geophysics (Istituto Geofisico, IG) reports eruptive tremor starting on 27 July from 15h00 local time. In the evening of that day, incandscence became visible from the summit of the volcano, indicating lava flows. An ash plume rose to 500-2000m and light ashfall was reported in the area around Olmedo. ...plus [lire toutes]
After several months of quiet, a major collapse of the lava dome of Soufrière Hills took place on 28 July, 2008. ...plus [lire toutes]
jeudi, juil. 24, 2008
RVO reported that during 12-18 July, ash plumes from Rabaul caldera's Tavurvur cone drifted NW and W. Ashfall was reported in areas downwind including significant accumulation in Rabaul town (3-5 km NW). ...plus [lire toutes]
On 19 July, activity at Okmok increased as interpreted from seismicity. Possibly, ash plumes rose to altitudes of 7.6-9.1 km (25,000-30,000 ft) a.s.l. The Volcano Alert Level was raised to Warning and the Aviation Color Code was raised to Red. ...plus [lire toutes]
A new eruption seems to have started at Cleveland volcano on 21 July. AVO raised the Volcano Alert Level as there were reports from pilots and fishing boats in the area, observing a new ash eruption that had started at about noon that day. Pilots reported that an ash-and-steam plume rose to ...plus [lire toutes]
mardi, juil. 22, 2008
SERNAGEOMIN reported that after increased seismicity at Llaima on 14 July, an ash plume rose to an altitude of 5.6 km (18,400 ft) a.s.l. Less than two hours later, very intense orange and red incandescence was seen through breaks in the cloud cover near the summit and at the base of the W flank. At 1915 a vigorous Strombolian eruption ejected incandescent pyroclastic material from the N vent in the main crater to heights of 500 m above the summit. ...plus [lire toutes]
jeudi, janv. 01, 1970
L'éruption du 13 mai au volcan Etna fissure continue. La coulée de lave dans la Valle del Bove est encore alimentated, bien que l'intensité des projections des bouches supérieures à 2800 m d'altitude a diminué depuis le 17 Juillet.
mercredi, juil. 16, 2008
 image showing the extent of the sulfur dioxide gas cloud from the eruption of Okmok Volcano. The large red mass is from the main explosive phase on 12 July at 2130 UTC and is at an estimated height of 50,000 ft above sea level. The north-south dimension of this cloud is about 850 miles. Current emissions from the volcano are at a lower altitude of approximately 30,000 to 35,000 feet. Other OMI data (not shown) indicate that volcanic ash is mixed with the sulfur dioxide cloud.
lundi, juil. 14, 2008
The strong eruption at Okmok continues based on ongoing seismic activity and satellite observations. Ash emissions continue reaching altitudes of 30,000 - 35,000 ft asl, and are posing a large hazard to all aircraft in the area.
dimanche, juil. 13, 2008
A large explosive eruption at Okmok volcano began at approximately 11:43 AM local time on July 12 and continues. An ash cloud with a top of at least 30,000-35,000 ft. height above sea level is present. ...plus
vendredi, juil. 11, 2008
A new phase of strombolian activity accompanied by lava flows took place at Llaima volcano on July 11.
A new phase of strombolian activity accompanied by lava flows took place at Llaima volcano on July 11.
A new phase of strombolian activity accompanied by lava flows took place at Llaima volcano on July 11.
vendredi, juil. 04, 2008
Llaima volcano is active again. On 1 July, a lava flow was seen on the W flank prompting authorities to evacuate about 20-30 people and warn others of possible further evacuations. The lava flow descended the W flank to 800-1000 m from the crater.
mardi, juin 24, 2008
 The exhibition hall of the new volcanological museum of Nisyros with (right) the photowall with a image of Etna erupting by (c) Dr. Tom Pfeiffer
samedi, juin 21, 2008
Over the past weeks, activity at from Santa María's Santiaguito lava dome complex was mild to low, producing produced ash plumes rising to 4.1-4.4 km (13,500-14,400 ft) a.s.l.
Mild strombolian activity continues at Fuego volcano. Incandescent material is thrown out up to 50 m above the vent on the summit crater and a small lava flow was observed on 13 June, travelling 100 m towards the Santa Teresa ravine on the W flank. Ash plumes reach altitudes of 3.9-4.4 km (12,800-14,400 ft) a.s.l. ...plus
Mild strombolian activity continues at Fuego volcano. Incandescent material is thrown out up to 50 m above the vent on the summit crater and a small lava flow was observed on 13 June, travelling 100 m towards the Santa Teresa ravine on the W flank. Ash plumes reach altitudes of 3.9-4.4 km (12,800-14,400 ft) a.s.l. ...plus
jeudi, janv. 01, 1970
Activité strombolienne avec des explosions de cendres fréquentes créant des panaches de jusqu'à environ 1 km de hauteur poursuivre à Anak Krakatau.
samedi, juin 21, 2008
Elevated gas output and high lake temperatures continue, while volcanic tremor has declined. Unrest continues at Ruapehu and it remains unclear if this is a sign of further eruptions. The volcano last erupted on September 25 2007. The Alert Level remains at Level 1. ...plus
jeudi, janv. 01, 1970
L'éruption de l'Etna se poursuit avec l'activité strombolienne des deux cheminées dans la partie supérieure de la fissure le 13 mai et l'émission d'une coulée de lave dans la Valle del Bove.
L'éruption au volcan Etna se poursuit et a même légèrement augmenté, selon les observations au cours de notre récente tournée (7-15 Juin) et de l'INGV Catane informataion. Deux évents sur la fissure Le 13 mai continuent à afficher faible à modéré activité strombolienne et nourrir une coulée de lave actives dans la Valle del Bove, avec des fronts atteignant 1900 m d'altitude, au NE de l'Centenari Monti.
jeudi, juin 12, 2008
Small pyroclastic flows and rockfall avalanches have been observed at Semeru since 22 May. The pyroclastic flows travelled a maximum distance of 2.5 km from the active crater. ...plus
Chaiten's new lava dome continues to grow rapidly inside the crater left by the sub-plinian eruption on 2 May. Over the past week, ash plumes produced by explosions rose to maximum altitude of 3 km (10,000 ft) a.s.l. and drifted SE. ...plus [lire toutes]
mardi, juin 10, 2008
As the Observatorio Vulcanológico y Sismológico de Costa Rica reports in a press bulletin, on Friday 06, June 2008 at 9:15am (15:15GMT) a large hot avalanche of unknown volume of blocky lava that had been accumulating at the summit since March 2007 rolled down the SW slopes of Arenal volcano, Costa Rica. ...plus [lire toutes]
jeudi, janv. 01, 1970
As INGV Catania reports, the mild strombolian activity and small effusion of lava from the 13 May eruptive fissure continue.
dimanche, juin 08, 2008
Soputan volcano started to erupt again on 6 June, producing ash plumes 2-3 km heigh and pyroclastic flows triggered by its growing lava dome that reached 4 km distance from the volcano.
samedi, juin 07, 2008
As the Geophysical Institute of Ecuador reports, the eruption at Cerro Azul has resumed. A new eruptive fissure, about 400-500 long, opened on the SE flank on 3 June at 20h45 local time. Initial 60 m high lava fountaining and new lava flows were produced. The lava flows are directed towards the south coast of the island. Satellite imagery shows a 50 km long ash and gas plumes drifting north.
jeudi, juin 05, 2008
Over the last days, the activity at the May 13 eruptive fissure has been slighlty increasing. Charles Rivière reports lava fountaining took place at the upper vents of the fissure during the night of 4-5 June.
The lava flow at Cerro Azul volcano has already stopped on 3 June. It flowed ca. 10 km from the crater on the SE flank without causing much damage to wildlife. The lava followed the same path as the lava flows from the Cerro Azul volcano during eruptions in 1978 and 1998. ...plus
jeudi, janv. 01, 1970
Activité strombolienne avec des explosions de cendres fréquents se poursuivent à Anak Krakatau. Panaches de cendres atteindre environ 1 km de hauteur.
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