lundi, juin 10, 2013

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dimanche, juin 09, 2013

Veniaminof (Alaska Peninsula, USA): Over the past 2 days, AVO has detected gradually increasing seismic tremor beneath Veniaminof and therefore raised the Aviation Color Code to Yellow and the Volcano Alert Level to Advisory. ... [details]

As the Indonesian Volcanological Survey (VSI) specified in its latest bulletin, parts of the active lava dome of the volcano have recently (early June) grown higher than the northern crater rim, where it is cut by a valley extending to the northern feet of the stratovolcano. Therefore, potential continued growth of the dome poses the risk of rockfalls and pyroclastic flows reach the northern flanks, where a number of villages are located, namely Pasilulu and Talen. ... [details]

Over the past 2 days, AVO has detected gradually increasing seismic tremor beneath Veniaminof and therefore raised the Aviation Color Code to Yellow and the Volcano Alert Level to Advisory. ... [details]

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samedi, juin 08, 2013

Pavlov (Alaska Peninsula, USA): Weak eruptive activity continues, producing small steam and ash plumes drifting at about 18-20,000 ft (5-6 km) altitude SSE as detected on satellite data (VAAC Anchorage). ... [details]

New eruptions occurred yesterday. The volcano produced a series of 7 small ash emissions between 06:45 to 11:43 am (local time). The explosions were very small and ash plumes only rose up to about 100 m above the crater. ... [details]

The volcano might be entering a phase of reawakening. A seismic swarm of 49 low magnitude earthquakes and a pulse of volcanic tremor occurred on 4 June, INETER reported in a press release that day. ... [details]

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vendredi, juin 07, 2013

Etna (Sicily, Italy): During a visit to the summit craters today, we could observe a new hot fumarole in the western pit of the Bocca Nuova, increased bluish degassing from a vent in the saddle between the old and new SE crater and hear deep-seated explosions inside the NE crater. ... [details]

The alert level of the volcano was raised to 3 ("Siaga", "alarm") on a scale of 1-4 by the Indonesian Volcanological Survey. [details]

jeudi, juin 06, 2013

Stromboli (Eolian Islands, Italy): When observed during 3-6 June, the volcano was at normal levels of activity which had not changed significantly since our last visit 2 weeks ago. On the crater terrace, about 7 active vents were present, with eruptions every about 15-20 minutes: the two vents in the NW crater sometimes erupted simultaneously, one with low ejections of blocks, scoria and ash, the other with loud turbine-like jets of gas and lava fragments that often reached about 250 m height. The hornito at the NW crater rim was not seen erupting. ... [details]

mercredi, juin 05, 2013

Tolbachik (Kamchatka): Activity continues with little changes, although the slow trend of decreasing seismic activity persists. A small lava lake 20 m across and weak strombolian activity were recently observed by Russian volcanologists who visited the site. Lava flows continue to be alimented and spread mainly to the SE. ... [details]

VSI raised the alert level of the volcano on Flores, famous for its 3 differently colored crater lakes, from 1 to 2 ("normal" to "waspada", "watch") on a scaled of 1 to 4, after one of the 3 crater lakes turned from blue to white on 3 June. In addition, a strong smell of sulfur was noted by people from Pemo village a few kilometers south. ... [details]