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Volcanic activity worldwide 4 Dec 2014: Bardarbunga volcano, Kilauea, Piton de la Fournaise, Nishino...

Thursday Dec 04, 2014 21:00 PM |

Landsat-8 image of the area of the eruption (NASA)
Landsat-8 image of the area of the eruption (NASA)
Map of the lava flow field (2 Dec, source: INGT / facebook)
Map of the lava flow field (2 Dec, source: INGT / facebook)
Steam plume from Nishinoshima on 27 Nov 2014 (Landsat 8 image / NASA Earth Observatory)
Steam plume from Nishinoshima on 27 Nov 2014 (Landsat 8 image / NASA Earth Observatory)
Screenshot of a video from 3 Dec looking at the erupting vent in Copahue's crater (Robin Campion, Univ. Mexico)
Screenshot of a video from 3 Dec looking at the erupting vent in Copahue's crater (Robin Campion, Univ. Mexico)
Bardarbunga (Iceland): (3 Dec) The eruption continues with little changes. While most of the lava now remains on top of the already emplaced lava field, more than 75 square km large, several lateral outbreaks are active as well.
The most active one, to the north, has advanced more than 450 m in a single day.
Seismic activity remains high under the volcano - yesterday, 2 earthquakes above magnitude 2 occurred under Bárðarbunga. No significant earthquake activity occurs under the erupting dyke, suggesting the situation is stable.

Fogo (Cape Verde): The intensity of the eruption has strongly decreased, and the lava flows that have been destroying Portela seems to have at least temporarily stopped.

Nishino-shima (Volcano Islands, Japan): (3 Dec) The eruption continues and has been going for more than a year now. It has enlarged the island to 1.89 square km (0.73 square miles). The highest point is now approx. 100 m above sea level.

Ruapehu (North Island): (3 Dec) Recent measurements by NZ scientists indicate that the volcano's crater lake is currently in a cooling trend. At 15 deg C, it has the lowest temperature recorded since April 2010.
According to GeoNet, the current cycle is part of the normal behavior of the lake.
... [read more]

Kilauea (Hawai'i): (3 Dec) The new lava lobe continues to advance and widen. As of this morning, it was only 4.3 km (2.7 miles) from Highway 130. A surge in lava supply resulted in an advance rate of 400 m per day!
At this rate it could reach Pahoa again by 12 December, if it follows the current flow path along the steepest slope to the north-northeast. If it follows another possible path, it could hit Ainaloa instead. It might even follow both paths, but it is too early to predict this.

Shishaldin (United States, Aleutian Islands): (3 Dec) Seismic activity remains elevated. According to the Alaska Volcano Observatory, "a low-level lava eruption is probably still occurring", although cloud cover prevents visual confirmation by satellite.

Cerro Negro de Mayasquer (Colombia): The volcano's alert level was decreased to Yellow. Seismic remains above background, but has decreased significantly recently.

Copahue (Chile/Argentina): A recent video by Robin Campion (Univ. Mexico) shows that the activity at the volcano is now magmatic in nature, i.e. fresh magma is being erupted as a small jet of mostly finely fragmented incandescent ash:

Piton de la Fournaise (La Réunion): A new eruption could be under way at the volcano. An increase in seismic activity, inflation of the volcanic edifice, and SO2 gas mixed into the degassing plume, typical for a fresh magma intrusion at shallow depth have been detected by the volcano observatory (OVPF).
The prefecture raised the alert for the volcano again to "Vigilance", after it had been lowered on 1 Dec only.
The changed status means that police, civil protection and other authorities are on standby to react quickly if an eruption occurs. Access to Enclos Fouque is not yet closed to public, but hikers must stay on marked trails.
Vorig nieuws
Lava flow in Portela village 3 Dec
Wednesday, Dec 03, 2014
Fogo (Cape Verde): The eruption continues. Lava flows have slowed down their advance to less than 1 m per hour, giving some time to breath for what is left at Portela village in Chã das Caldeiras. ... [meer...]
Snapshot from embedded video showing the boiling lava lake at the vent in Holuhraun
Tuesday, Dec 02, 2014
Bardarbunga (Iceland): The eruption continues at similar intensity as during the past weeks. It also continues to produce spectacular images and videos such as this one from an overflight in late November: ... [meer...]
The eruptive vents at Fogo this morning (MuzikaTV)
Sunday, Nov 30, 2014
Fogo (Cape Verde): Although explosive activity has decreased at the vents, it seems that lava effusion picked up. The advance of some of the lava flow fronts in Portela village picked up again this morning, reaching 20 meters per hour. Local sources mention that seismic activity also increased. ... [meer...]

Saturday, Nov 29, 2014
Bardarbunga (Iceland): These two images were posted on the twitter account of the University of Iceland after their recent field expedition. As the lava field continues to expand, new branches of red hot rivers reach its edge and cascade down on the sandy plain below in a spectacular ‘water’fall of glowing lava. Scientists report that by now the Holuhraun lava field covers almost 75 square kilometres which represents an area bigger than the Reykjavik metropolitan area. ... [meer...]

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