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Volcanic activity worldwide 6 Feb 2014: Fuego, Nishino-shima, San Cristobal, Santa María / Santiagu...

Thursday Feb 06, 2014 16:42 PM |

Panoramic view of the Bove Valley at dawn (Photo: Emanuela / VolcanoDiscovery Italia)
Panoramic view of the Bove Valley at dawn (Photo: Emanuela / VolcanoDiscovery Italia)
Nishino-Shima island on 3 Feb. For comparison, the previous shorelines on 20 Jan (yellow) and 21 Nov past year (white). (Image: Japanese Coast Guard)
Nishino-Shima island on 3 Feb. For comparison, the previous shorelines on 20 Jan (yellow) and 21 Nov past year (white). (Image: Japanese Coast Guard)
Current seismic signal from Pacaya (PCG station, INSIVUMEH)
Current seismic signal from Pacaya (PCG station, INSIVUMEH)
Current seismic signal of Fuego (FG3 station, INSIVUMEH)
Current seismic signal of Fuego (FG3 station, INSIVUMEH)
The seismic signal associated with the phreatic explosions at San Cristobal (CRIN stataion, INETER)
The seismic signal associated with the phreatic explosions at San Cristobal (CRIN stataion, INETER)
Ash plume from an explosion of Tungurahua this afternoon
Ash plume from an explosion of Tungurahua this afternoon
Etna (Sicily, Italy): Lava continues to flow from the fissure vent at the eastern base of the New SE crater. Accompanied by slowly rising tremor, an overall gradual increase of the activity can be noted.
The front of the old lava flow is stopped at 1660 m while the active lava flow is descending on the upper wall of the valle del Bove.
Ash emission continues from the summit vent of the New SE crater.

Nishino-shima (Volcano Islands): (5 Feb) New images from an overflight on 3 February confirm that the activity on the former new island continues steadily. Over the past weeks, the vent has been feeding several active lava flow fronts, that enlarged the land covered by new lava in more or less all directions.
... [read more]

Dukono (Halmahera): Low-level ash plumes continue to be detected on satellite imagery almost every day, suggesting that explosive activity (strombolian type) is currently intense.

Santa María / Santiaguito (Guatemala): Activity has shown no to little variations but has decreased a bit overall. The lava dome has currently active flows on the SW and NE flanks and continues to produce small to moderate ash explosions from time to time.

Pacaya (Guatemala): No visible eruptive activity except degassing is being mentioned by INSIVUMEH. The seismic signal shows degassing tremor and deep-seated small explosions.

Fuego (Guatemala): Strombolian activity remains relatively intense and the seismic signal suggests it currently increasing. The volcano observatory reported that during the past 24 hours, there were frequent small to moderate explosions with incandescent ejecta reaching up to about 100 m above the crater and ash plumes of up to 500 m. Shock waves commonly accompany the explosions.
The lava flow on the upper southern slope had decreased to only about 75 m length.

San Cristobal (Nicaragua): A series of small, probably phreatic explosions occurred at the volcano's summit crater early on Tuesday. INETER indicated the activity took place between 6:41 - 8:50 local time and consisted of at least 2 explosions, which generated a small steam and ash plume rising to about 200 m height.
INETER believes that these eruptions were an isolated event and not sign of a new eruptive phase with new magma involved, but most likely caused by the sudden vaporization of overheated infiltrated rain water. The alarm level of the volcano was not raised and no particular measures are planned.

Reventador (Ecuador): Intense degassing and occasional weak explosions with ash emissions probably continue, based on the more or less unchanged moderately intense seismic activity. Visual observations were not possible over the past days due to cloud cover.

Tungurahua (Ecuador): The volcano continues to be very active with frequent explosions that eject incandescent lava to several hundred meters height and ash plumes rising up to 3-4 km above the summit.
Strong shock waves and cannon-shot explosion sounds accompany the eruptions. Ash fall occurred in Pondoa, Runtún, Triunfo, and Río Verde.
.
Previous news
The new lava flow and an ash emission from the New SE crater
Tuesday, Feb 04, 2014
Etna (Sicily, Italy): After a short pause with likely no (or almost no) eruptive activity during 1-2 Feb, the volcano started renewed lava effusion from the fissure vent at the eastern foot of the New SE crater yesterday, followed by the onset of weak explosive activity(ash emissions) from the New SE crater this afternoon. ... [more]
The new lava dome of Kelut volcano in Nov 2007
Monday, Feb 03, 2014
Kelud (East Java): (2 Feb) The alert level of the volcano was raised today from 1 ("normal") to 2 ("Waspada", "watch") on a scale of 1-4. During the second half of 2014, a strong increase in seismic activity and a 5.5 deg temperature increase of the crater lake water had been detected. ... [more]
Ash eruption from Suwanose-jima this morning
Sunday, Feb 02, 2014
Tolbachik (Kamchatka): On 31 Jan, KVERT finally lowered the Aviation Color Code of the volcano back to green, as the volcano has been calm for a while and shows no more signs of unrest that new activity could be likely in the near future. ... [more]
Ash plume of the deadly pyroclastic flow on the SE flank this morning
Saturday, Feb 01, 2014
Sinabung (Sumatra, Indonesia): Sad news today: the volcano claimed its first victims this morning due to a direct effect of the eruption. At least 14 people were reported killed and 3 others severely bunt by one or two moderately large pyroclastic flows this morning. 3 more people are still reported missing. ... [more]
Pyroclastic flow at Sinabung volcano this morning
Friday, Jan 31, 2014
Sinabung (Sumatra, Indonesia): The eruption shows little variations as the volcano continues to effuse viscous magma at the summit vent. A part of that simply contributes to the growth of the lava dome and the viscous lava tongue that descends on the SE flank. Another part of the new magma collapses and produces rock-falls that turn into pyroclastic flows such as this morning (video): ... [more]

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