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jeudi, déc. 25, 2008
Koryaksky volcano, one of Kamchatka's most majestic stratovolcanoes, near Petropavlovsk in the SE, began erupting late on 24 December. ...plus [lire toutes]
samedi, déc. 06, 2008
Our tour guide Doni reports strong Strombolian eruptions at Mt.Karang etang volcano. The cone is covered by hot lapilli and ash plumes can be seen. Strombolian eruptions can be seen every 10 - 15 minute. Also Volcanian eruptions.
mercredi, déc. 03, 2008
The Montserrat Volcano Observatory reported a stron explosion and a pyroclastic flow on Soufriere Hills on 2nd December at 9:35 pm local time. It is reported that the explosion came without any warning and that there was no precursory seismic activity recorded. The explosion took place probably on the western side of the volcano. No air-fall pumice was reported, but rocks were thrown about 0ne kilometer from the lava dome. The pyroclastic flow travelled down to Gages valley and into Plymouth. It may have reached the sea. The pyroclastic flow generated ash plumes and lightning strikes. The hazard level remains still at 3.
mardi, déc. 02, 2008
Today the German photographer Thomas Reichart was found by our tour guide Rosario Basile killed on Etna volcano. He was lost for two days and many people were searching for him. But there was no hope anymore and today they had to bring us the sad news. ...plus [lire toutes]
vendredi, nov. 21, 2008
During 7-14 November the activity level at the Soufrière Hills lava dome increased slightly, but remained low, and there was no evidence of lava extrusion. Rockfalls were detected by the seismic network.The Hazard Level remained at 3.
jeudi, janv. 01, 1970
The seismic activity at Shiveluch was above background levels during 6-14 November. Ash plumes rose to an altitude of 6.8 km and hot avalanches descended the lava dome on 6 November producing ash plumes that rose to an altitude of 4 km. There was a daily thermal anomaly on the lava dome and the Level of Concern Color Code remained at Orange.
vendredi, nov. 21, 2008
It was reported that ash puffs from Santa María's Santiaguito lava dome complex drifted SW on 11 and 15 November.
It was reported that during 12 and 16-18 November ash plumes from Rabaul caldera's Tavurvur ...plus
Emissions of steam and gas from Popocatépetl were visible during 12-18 November. On 17 November an ash plume rose to an altitude of 6.1 km. A thermal anomaly was detected. Emissions contained slight amounts of ash on 18 November.
The seismic activity at Kliuchevskoi was above background levels during 7-13 November. Visual observations showed that during 8 and 10-12 November gas-and-steam plumes that contained a small amount of ash rose to an altitude of 5.1 km. There was a daily thermal anomaly in the crater. The Level of Concern Color Code remained Orange.
It was reported that during 12-18 November lava flowed SE through a tube system from underneath Kilauea's Thanksgiving Eve Breakout (TEB). It was reaching the Waikupanaha ocean entry. Incandescence and active surface flows were seen at the base of the pali fault. Several earthquakes were located beneath the south of the caldera and along the S-flank fault. Beneath Halema'uma'u crater earthquakes ranged from 20 to 40, but could not be located. The vent in Halema'uma'u crater continued to produce a white plume and drifted mainly SW depositing small amounts of tephra. Night-time incandescence was seen at the base of a plume. Sounds resembling distant surf and rockfalls were reported in the vicinity of the crater. The sulfur dioxide emission rate was 800-1200 t per day on 14 and 17 November.
The seismic activity on Karymsky increased above background levels on 11-12 November. Ash plumes were seen on 10 November on satellite imagery and they were drifting 38 km E and 28 km ENE. During 10-11 November explosions have generated ash plumes to an altitude of 3.8 km . Also during 10-11 November a thermal anomaly in the crater was detected. The Level of Concern Color Code remained at Orange.
During 12-17November ash plumes from Chaitén continuously rose to altitudes 1.4-3.7 km and a thermal anomaly was detected on satellite photos on 12 November
On Reventador's crater a slight incandescence was seen during 11-12 November and a high number of rockfalls was reported by seismic signals on 13-18 November. Probably from the lava-flow-fronts.
Occasional gas emissions and ash were observed on 11 November on Nevado del Huila and also stron sulfur odors and ashfall was reported on 12-18 November. Ash fall is going on and also there is still the danger of volcanic eruptions. The alert level remains at ORANGE.
jeudi, janv. 01, 1970
The eruption near Dalaffilla and Alu volcanoes on 3 November were reported by night-time satellite images. There was a multi-lobed lava-fieldwith a channel flowing to north-east. The source was a fissure northwest of Dalaffilla. The lava flowded area has a dimension of aproximately 9,3 x 15 km. Thermal anomalies showed that the lava-flow was also active during 12-16 November.
vendredi, nov. 21, 2008
A pilot reported a lava flow on Barren island on 17 November and also a ash plume was seen.
On 17 November the alert level for Akan volcano was rised to level 3. There have been recorded tremors and a cloud that was the result of an ash eruption that covered the crater rim with black ash. Also ballsitic lithics were deposed around the crater.
vendredi, nov. 14, 2008
Nyiamuragira & Nyiragongo volcano (DRCongo), eruption warning: increased seismicity, rising magma level in Nyiragongo's crater
Africa's two most active volcanoes might erupt soon, adding to the conflict in the East Kivu region. In an interview reported in the German newspaper "Die Welt" scientist from Goma's volcano observatory are warning about possible impending eruptions of both Nyiamuragira and Nyiragongo. ...plus [lire toutes]
mercredi, nov. 12, 2008
The new lava dome of Chaitén volcano continues to grow and emit a dense plume of mainly vapour, typically rising to ca. 2 km altitude. Seismic activity beneath the volcano remains high. ...plus
Seismicity beneath Nevado del Huila volcano reached a new peak yesterday, when Ingeominas recorded 1150 events beneath the volcano. New fumaroles were reported as well. A detailed report is available in Ingeominas' latest status report about Nevado del Huila dated 11 Nov 2008. ...plus [lire toutes]
The new eruption of Reventador volcano has calmed down, but continues, as news reports and the Istituto Geofisico report.
mardi, nov. 11, 2008
Reventador volcano in Ecuador has started a new eruption on 10 November with spectacular strombolian activity and lava flows on both its north and south side. The, the fist after its last eruption in July, eruption followed increased seismicity that started at 13h00 on Saturday (8 Nov). ...plus [lire toutes]
Machín volcano in Tolima (Columbia) became active over the weekend as Columbian newspapers reported. Hundreds of families living in the area surrounding the volcano had to be evacuated. ...plus
lundi, nov. 10, 2008
Ingeominas and Colombian authorities are worried about a possible/likely impending eruption of Nevado del Huila. ...plus [lire toutes]
samedi, nov. 08, 2008
Heavy rainfalls have caused Rio Blanco river (Chaitén r.) to swell dramatically. Floods have broken through the barriers and containment works that have been built since June, destroying at least 30 homes in Chaitén town. ...plus [lire toutes]
The Alaska Volcano Observatory has changed the volcano alert level for Redoubt Volcano to advisory, with an aviation code level of yellow. In a notice issued Wednesday, AVO said it changed the alert level due to changes in gas emission and heat output from the volcano. The recent changes are different from background activity.
vendredi, nov. 07, 2008
As more news come in, the eruption in the Erta Ale range can now almost certainly be attributed to a fissure between Dalaffilla and Alu volcanoes. It could be one of the largest volcanic eruptions known in historic times in Africa. News reports interpreting satellite data suggest that there were enormous lava flows in the early stages of the eruption. ...plus [lire toutes]
jeudi, nov. 06, 2008
Sulphur dioxide plume from the new eruption in the Afar on Nov 6, showing that the plume has reached and crossed India (source: NESDIS)
As Simon Carn from MTU alerted via a list message, a new eruption from a vent at the northern end of the Erta Ale volcanic range in the Danakil, Ethiopia, has been detected by satellite instruments on November 3. ...plus
Map of the Danakil with the Erta Ale range showing the hot area on 4 Nov, presumably lava flows, visible on MODVOLC's hot-spot monitoring tool.
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