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Volcanic activity worldwide 4 Feb 2014: Etna, Barren Island, Tungurahua, Sinabung, Nishino-shima

Tuesday Feb 04, 2014 17:16 PM |

The new lava flow and an ash emission from the New SE crater
The new lava flow and an ash emission from the New SE crater
A hot spot on Nishino-Shima island and its location in the western Pacific
A hot spot on Nishino-Shima island and its location in the western Pacific
Pyroclastic flow at Sinabung yesterday afternoon
Pyroclastic flow at Sinabung yesterday afternoon
Image sequence (both thermal and visual) of the main explosion on 1 Feb, showing the collapse of the eruption column into pyroclastic flows (IGPEN)
Ash column rising from Tungurahua this morning
Ash column rising from Tungurahua this morning
Gas and ash plume from Barren Island today (MODIS/Terra, NASA)
Gas and ash plume from Barren Island today (MODIS/Terra, NASA)
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.
So far, this activity has been very weak and the lava flow progressed only a few 100 m. The tremor signal is low and doesn't show a clear trend at the moment.

Nishino-shima (Volcano Islands): The eruption on the now merged Nishino-Shima and Niishima islands continues. A hot spot is visible on current MODIS data.
Hopefully, new imagery will be available from the Japanese Coast guard soon.

Sinabung (Sumatra, Indonesia): The eruption of the volcano continues with little changes. During the past 2 days (see video below), there have been a number of smaller and occasional medium-sized explosions/dome collapse events that produced pyroclastic flows that reach up to 2-3 km length (at 13:50 yesterday and 07:50 this morning (local times).

... [read more]

Tungurahua (Ecuador): (3 Feb) Activity at the volcano continues at similar levels as yesterday with intermittent small to moderately large explosions, producing ash plumes of up to 4 km height.
IGPEN released an illustrated summary of the volcano's activity during the past days including the attached image sequence showing the violent explosion on 1 Feb that generated large pyroclastic flows due to the collapse of the eruption column.
... [read more]
...4 Feb:
Activity remains elevated. The volcano emits a constant ash and steam column rising up to 4-5 km, and has strong individual explosions with loud detonations like cannon-shots.
Depending on the wind direction, ash falls, in parts heavy, have been occurring in particular in the sectors north of the volcano and reached as far as the capital Quito.

Barren Island (Indian Ocean): Intermittent eruptive activity continues on the small remote island next to the Andaman island group. A small steam and ash plume and a thermal hot spot can be seen on today's and yesterday's satellite images.
Without (the rare) direct observations (usually by Indian navy), it is impossible to know exactly what type of activity is going on at the moment. It could be intermittent strombolian-type explosions, and/or lava flows or even the formation of a small temporary lava lake.
Previous news

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]
Thermal image of the lava flow (Monte Cagliato webcam, INGV Catania)
Thursday, Jan 30, 2014
Etna (Sicily, Italy): The recent eruptive episode, which could be called a mainly effusive paroxysm, seem to have more or less ended. Activity if still present (weak explosions at the NSEC and lava effusion from the fissure vent at its base) has decreased a lot. Visibility and weather are bad at the moment to have a more detailed picture. ... [more]

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