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Volcanic activity worldwide 25 Aug 2014: Bárdarbunga volcano

Monday Aug 25, 2014 21:02 PM |

Map indicating all earthquakes that occured since 16 August, showing their spatial migration in the last 10 days (red = today)
Map indicating all earthquakes that occured since 16 August, showing their spatial migration in the last 10 days (red = today)
Location of today's earthquakes near Bardarbunga volcano
Location of today's earthquakes near Bardarbunga volcano
Earthquake epicenters since the beginning of the crisis (IMO)
Earthquake epicenters since the beginning of the crisis (IMO)
Bárdarbunga (Iceland): The latest offical briefing from the Icelandic Met Office confirms that seismic activity continues to migrate northwards with earthquakes below Bárðarbunga becoming weaker. An eruption in the Bárdarbunga caldera is therefore at present considered to be less likely.
The 10 km long tip of the dike now extends 5 km beyond the edge of the Dyngjujökull glacier. The entire dike is thought to be close to 35 km long and modelling of GPS data indicates that it contains about 300 million cubic meters of magma.
... [read more]
...25 Aug:
The seismic crisis in Bárðarbunga and Dyngjujökull continues strongly. Today alone, more than 400 quakes of magnitudes up to 4 were detected, mostly at the N end of the active intrusion that has been going on. The location of the quakes indicating the front of the magma intrusion (dyke) continues to advance northwards. Its tip is now outside the glacier and approaching the Askja caldera. In case of an eruption, it is now more likely that at least some of it occurs on land (and not under the glacier).
In total, the intrusion has a length of approx. 40 km. Horizontal displacement in the crust, based on GPS data, approaches 1 meter above the dyke. A rough estimation of the volume of intruded magma is about 1 cubic kilometers.
... [read more]
...24 Aug:
About half an hour ago, another strong earthquake (magnitude 5.3) occurred near Bardarbunga. It is not yet listed by IMO, but was already picked up by international earthquake monitoring systems.
...24 Aug:
The latest update from IMO mentions approx. 1300 earthquakes today (00-19:00) so far, mostly around the northernmost tip of the active dyke intrusion, now located 4 km north of Dyngjujökull.
More than 20 quakes were above magnitude 3, and the depths of most quakes were around 5-12 km. There is currently no sign of vertical magma movement and the propagation of the intrusion has slowed down compared to yesterday.
... [read more]

Volcano Activity Summary for 25 Aug 2014:

Currently erupting:

Ambrym (Vanuatu): active lava lakes in several craters (updated 14 Aug 2013)
Bagana (Bougainville Island, Papua New Guinea): ash emissions, lava dome growth (updated 14 Aug 2014)
Barren Island (Indian Ocean): intermittent activity, likely strombolian-type and/or lava flows (updated 4 Feb 2014)
Batu Tara (Sunda Islands, Indonesia): strombolian explosions, ash plumes up to 500 m, extrusion of a small lava dome with rockfalls (updated 7 Jul 2014)
Colima (Western Mexico): extrusion of lava flow from summit, intermittent explosions (updated 10 Apr 2014)
Dukono (Halmahera): thermal anomaly, probably small explosive activity in summit crater (updated 21 Aug 2014)
Erebus (Antarctica): active lava lake in summit crater (updated 21 Jan 2012)
Erta Ale (Ethiopia): active lava lake in northern pit crater, active hornito with intermittend flow in southern crater (updated 11 Jan 2013)
Fuego (Guatemala): strombolian explosions from summit crater, intermittent lava flows (updated 22 Aug 2014)
Ibu (Halmahera, Indonesia): growing lava dome, occasional ash emissions (updated 28 Jul 2014)
Kilauea (Hawai'i): new lava flow from vents on NE flank of Pu'u 'O'o (updated 13 Aug 2013)
Lokon-Empung (North Sulawesi, Indonesia): small explosions, lava flow? (updated 25 Jul 2013)
Manam (Papua New Guinea): degassing, occasional ash venting (updated 28 Aug 2013)
Marapi (Western Sumatra, Indonesia): sporadic explosions (updated 27 Mar 2014)
Nasu (Honshu)
Nishino-shima (Volcano Islands, Japan): lava effusion enlarging the new island (updated 28 Jul 2014)
Nyiragongo (DRCongo): active lava lake in summit crater (updated 26 Feb 2014)
Ol Doinyo Lengai (Tanzania): effusion of natrocarbonatite lava inside the crater (updated 8 Jul 2013)
Reventador (Ecuador): ash emissions, explosions (updated 19 Aug 2014)
Sakurajima (Kyushu, Japan): ash venting, intermittent explosions (updated 19 Aug 2014)
Sangeang Api (Indonesia): growing lava dome & lava flow (updated 7 Jul 2014)
Santiaguito (Guatemala): generation of hot lahars (updated 4 Aug 2014)
Semeru (East Java, Indonesia): growing lava dome & lava flow, sporadic explosions (updated 23 Jul 2014)
Shishaldin (United States, Aleutian Islands): small lava lake in summit crater (updated 14 Aug 2014)
Shiveluch (Kamchatka): growing lava dome, incandescent avalanches, occasional explosions (updated 7 Jul 2014)
Sinabung (Sumatra, Indonesia): effusion of viscous lava, steaming, ash emissions (updated 15 Jul 2014)
Slamet (Central Java): strombolian explosions from central crater (updated 14 Aug 2014)
Stromboli (Eolian Islands, Italy): large lava flow on Sciara del Fuoco (updated 24 Aug 2014)
Suwanose-jima (Ryukyu Islands): strombolian activity in summit crater (updated 19 Jun 2014)
Tungurahua (Ecuador): moderate to strong strombolian explosions from central crater (updated 24 Aug 2014)
Ubinas (Peru): degassing, sporadic small explosions and ash venting (updated 22 Aug 2014)
Yasur (Tanna Island, Vanuatu): ash emissions, weak strombolian explosions (updated 14 Aug 2013)
Zhupanovsky (Kamchatka, Russia): intermittent ash emissions (updated 21 Aug 2014)

Eruption warning / minor activity:

Aso (Kyushu): occasional weak ash emissions (updated 23 Jul 2014)
Bárdarbunga (Iceland): Ongoing northward migration of seismic activity (updated 21 Aug 2014)
Bezymianny (Central Kamchatka Depression): steaming, weak seismic activity (updated 3 Jul 2014)
Chirpoi (Kurile Islands, Russia): hot spot visible on satellite imagery (updated 1 May 2014)
Etna (Sicily, Italy): strombolian explosions and lava flow effusion from NSEC (updated 19 Apr 2014)
Heard (Australia, Southern Indian Ocean): possibly lava lake in summit crater (updated 27 May 2014)
Karangetang (Siau Island, Sangihe Islands, Indonesia): lava extrusion at summit crater, strombolian activity, glowing avalanches (updated 28 Jul 2014)
Karymsky (Kamchatka): occasional small explosions, thermal anomaly (updated 3 Jul 2014)
Kavachi (Solomon Islands): no eruption since 2007 (updated 16 Jun 2014)
Kerinci (Sumatra): seismic unrest (updated 5 Jun 2013)
Krakatau (Sunda Strait, Indonesia): degassing (updated 31 Mar 2014)
Kuchinoerabu-jima (Ryukyu Islands): explosion on 3 Aug 2014 (updated 21 Aug 2014)
Mayon (Luzon Island): slowly growing lava dome (updated 17 Aug 2014)
Medvezhia (Kurile Islands, Russia): strong steaming, thermal anomaly (updated 17 Jan 2013)
Nyamuragira (DRCongo): lava lake in summit crater (updated 4 Aug 2014)
Papandayan (West Java): strong hydrothermal activity, increased seismicity (updated 6 May 2013)
Piton de la Fournaise (La Réunion): short-lived eruption during 21-22 June (updated 23 Jun 2014)
Poas (Costa Rica): occasional small phreatic explosions, intense degassing (updated 23 Jun 2014)
Popocatépetl (Central Mexico): degassing, sporadic explosions, slowly growing lava dome (updated 24 Aug 2014)
Rabaul (Tavurvur) (New Britain, Papua New Guinea): weak ash explosions (updated 26 Aug 2013)
Rasshua (Central Kuriles)
Raung (East Java): strombolian activity in summit crater (updated 5 Aug 2013)
Rincón de la Vieja (Costa Rica): small phreatic eruption on 11 April (updated 6 Oct 2012)
Sabancaya (Peru): seismic unrest, fumarolic activity (updated 14 Aug 2014)
Sacabaya (Northern Chile, Bolivia and Argentina)
San Cristobal (Nicaragua): possible ash emission on 11 April (updated 12 Apr 2014)
San Miguel (El Salvador): ash emissions, small explosions, increasing tremor (updated 23 Jul 2014)
Sangay (Ecuador): degassing (updated 24 May 2013)
Ulawun (New Britain, Papua New Guinea): degassing, ash venting (updated 5 Aug 2013)

Previous news
Thermal image of the upper Sciara del Fuoco of Stromboli
Sunday, Aug 24, 2014
Stromboli (Eolian Islands, Italy): The lava flow continues to be active, but the effusion rate has been more and more unstable and fluctuates a lot. This results in lava flows taking different (often overlapping) paths on the upper portion of the Sciara del Fuoco. ... [more]
Location of today's earthquakes showing the propagation of the intrusion to the north
Saturday, Aug 23, 2014
Bárdarbunga (Iceland): Even if Bárðarbunga's eruption continues and breaks the ice, allowing explosions between magma and water/ice to eject significant amounts of ash, most experts agree that a scenario like the Eyjafjallajökull back in 2010 is unlikely to repeat itself. ... [more]
Powerful vulcanian explosion at Ubinas yesterday
Friday, Aug 22, 2014
Fuego (Guatemala): Explosive activity has been relatively high recently. Individual eruptions have been producing ash plumes that rose to up to 1 km and incandescent material was seen rising 150-200 m above the crater. ... [more]

Thursday, Aug 21, 2014
Stromboli (Eolian Islands, Italy): Lava continues to flow from the fissure vent at the base of the NE crater. Compared to the first week, the effusion rate has become more unstable, causing several surges and intervals of strongly decreasing activity. ... [more]
Road map of the closed area near Bardarbunga volcano
Wednesday, Aug 20, 2014
Bárdarbunga (Iceland): (20 Aug) The situation remains the same as yesterday. The earthquake swarm continues at high intensity. The quakes are clustered in an area 20 km east of the Bárdarbunga volcano's caldera under the ice cap and at shallow depths of 10-1 km. ... [more]

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