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Volcanic activity worldwide 12 Dec 2014: Fuego volcano, Bardarbunga, Kilauea, Fogo, Stromboli, Santi...

Friday Dec 12, 2014 15:52 PM |

Strong degassing and small explosions from Stromboli's summit vents yesterday (INGV Catania)
Strong degassing and small explosions from Stromboli's summit vents yesterday (INGV Catania)
Evolution of the lava flow field at Holuhraun (IMO)
Evolution of the lava flow field at Holuhraun (IMO)
Landsat 8 image of the lava field at Holuhraun yesterday
Landsat 8 image of the lava field at Holuhraun yesterday
Map of Fogo's lava flow as of 10 Dec 2014 (Copernicus)
Map of Fogo's lava flow as of 10 Dec 2014 (Copernicus)
Ash emission from Aso's Nakadake crater
Pyroclastic flow at Sinabung this morning
Pyroclastic flow at Sinabung this morning
Map of thhe lava flow near Pahoa as of 9 Dec (HVO)
Map of thhe lava flow near Pahoa as of 9 Dec (HVO)
Lava fountain from Fuego during 10-11 Dec 2014
Lava fountain from Fuego during 10-11 Dec 2014
Stromboli (Eolian Islands, Italy): Activity has remained low - there is no lava effusion. At the vents in the summit craters, there are occasional small explosions and strong degassing.
Tremor is low, and CO2 emissions have decreased a bit over the past weeks.
Access to the area above 400 m remains closed.

Bardarbunga (Iceland): The Icelandic Met Office (IMO) published two great graphics showing the gradual evolution of the Holuhraun (or now called Nornahraun) lava flow field and compares it with the two largest lava fields erupted on Iceland in historic times, Laki in 1783 and Eldgjá in 934 AD. Even though it is the largest eruption in more than 150 years on Iceland, it still is much much smaller than those two.
...12 Dec:
According to the latest measurements, the lava field from Holuhraun now covers 77,5 km². The eruption which had its 100th day on 9 Dec, continues with little changes and there is no end in sight.
Active breakouts are located on the northern margin of the lava field, now called "Nornahraun".
Earthquake activity under the central volcano remains elevated, but over the past weeks, earthquakes larger than magnitude 4 have become more rare. Recent geochemical studies of the lava show that it seems to rise directly from a source at 9-20 km depth, i.e. is generated by decompressing mantle material.

Fogo (Cape Verde): Volcanic activity continues, but the advance of the lava flows has slowed down to approx. 5 meters per hour and it seems that the effusion rate has diminished.
The abundant presence of gases and ash in the area of the Cha das Caldeiras caldera promts authorities to maintain a total access restriction.
... [read more]

Aso (Kyushu): Strombolian activity and low ash emissions are near continuous at the Nakadake crater.

Azuma (Honshu): Japan's Met Office (JMA) detected increased seismic activity at the volcano and raised the alert level to 2. Access to the crater, a popular walking trail, is now closed.

Sinabung (Sumatra, Indonesia): The activity at the volcano remains similar as during the past weeks. The extrusion of viscous lava continues to feed a new tongue in the upper part of the southern slope.
Its steep front suffers occasional collapses that trigger rockfalls and small to medium pyroclastic flows, sometimes reaching 2-3 km in length such as this morning:


Kilauea (Hawai'i): The lava flow continues to advance slowly towards Pahoa, but there is no immediate threat at the moment.
Yesterday morning, HVO reported that "the leading edge of the flow was about 3.0 km (1.9 mi) upslope from the intersection of Pāhoa Village Road and Highway 130, near the Pāhoa Marketplace.
... [read more]

Santiaguito (Guatemala): Activity remains relatively low. A moderate explosion occurred this morning, producing an ash plume that rose 700 m. Weak to moderate avalanches were seen originating from the Caliente dome's eastern flank.

Fuego (Guatemala): A small paroxysm occurred at the volcano during the night between Wed-Thu, INSIVUMEH reports in a special bulletin. Activity, which generally had been elevated over the past weeks, increased during the evening of 10 Dec and towards a phase of continuous lava fountaining of 100-150 m height. Turbine-like degassing sounds accompanied the eruption.
The intense phase of activity lasted until the next morning (11 Dec) when it gradually decreased and returned to the normal mode of intermittent explosions.

Volcano Activity Summary for 12 Dec 2014:

Currently erupting:

Ambrym (Vanuatu): active lava lakes in several craters (updated 14 Aug 2013)
Aso (Kyushu): intense strombolian activity from 2 vents (updated 12 Dec 2014)
Bagana (Bougainville Island, Papua New Guinea): ash emissions, lava dome growth (updated 10 Nov 2014)
Bardarbunga (Iceland): lava lake, sporadic fountains, lava flow (updated 18 Sep 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 4 Nov 2014)
Colima (Western Mexico): new lava flow on SW flank (updated 30 Nov 2014)
Copahue (Chile/Argentina): ash venting (updated 4 Dec 2014)
Dukono (Halmahera): thermal anomaly, probably small explosive activity in summit crater (updated 25 Nov 2014)
Erebus (Antarctica): active lava lake in summit crater (updated 8 Dec 2014)
Erta Ale (Ethiopia): active lava lake in northern pit crater, active hornito with intermittend flow in southern crater (updated 11 Jan 2013)
Fogo (Cape Verde): lava fountaining (updated 12 Dec 2014)
Fuego (Guatemala): strombolian explosions from summit crater, intermittent lava flows (updated 12 Dec 2014)
Ibu (Halmahera, Indonesia): stromolian and phreatomagmatic explosions (updated 14 Nov 2014)
Karymsky (Kamchatka): occasional small explosions, thermal anomaly (updated 4 Oct 2014)
Kilauea (Hawai'i): new lava flow from vents on NE flank of Pu'u 'O'o (updated 13 Aug 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): growing island (updated 3 Dec 2014)
Nyamuragira (DRCongo): active lava lake (updated 29 Nov 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)
Poas (Costa Rica): phreatic explosions (updated 14 Oct 2014)
Rabaul (Tavurvur) (New Britain, Papua New Guinea): lava fountains, ash emissions from Tavurvur cone (updated 12 Sep 2014)
Raung (East Java): mild strombolian activity in summit crater (updated 2 Dec 2014)
Reventador (Ecuador): lava flow on southwestern flank, intermittent explosions (updated 7 Dec 2014)
Sakurajima (Kyushu, Japan): ash venting, intermittent explosions (updated 30 Nov 2014)
Sangeang Api (Indonesia): growing lava dome & lava flow (updated 7 Jul 2014)
Santiaguito (Guatemala): generation of hot lahars (updated 12 Dec 2014)
Semeru (East Java, Indonesia): growing lava dome, lava flow, strombolian activity (updated 26 Nov 2014)
Shiveluch (Kamchatka): growing lava dome, incandescent avalanches, occasional explosions (updated 5 Dec 2014)
Sinabung (Sumatra, Indonesia): continuing pyroclastic flows (updated 12 Dec 2014)
Slamet (Central Java): intense strombolian explosions (updated 13 Sep 2014)
Suwanose-jima (Ryukyu Islands): strombolian activity in summit crater (updated 14 Nov 2014)
Tungurahua (Ecuador): moderate to strong strombolian explosions from central crater (updated 25 Sep 2014)
Ubinas (Peru): degassing, sporadic small explosions and ash venting (updated 11 Sep 2014)
Yasur (Tanna Island, Vanuatu): ash emissions, weak strombolian explosions (updated 14 Aug 2013)
Zhupanovsky (Kamchatka, Russia): degassing, last eruption ended mid Oct 2014 (updated 30 Nov 2014)

Eruption warning / minor activity:

Augustine (Cook Inlet (SW Alaska))
Bezymianny (Central Kamchatka Depression): steaming, weak seismic activity (updated 3 Jul 2014)
Chirpoi (Kurile Islands, Russia): hot spot visible on satellite imagery (updated 2 Dec 2014)
Etna (Sicily, Italy): sporadic weak ash emissions from New SE crater (updated 19 Apr 2014)
Heard (Australia, Southern Indian Ocean): possibly lava lake in summit crater (updated 5 Dec 2014)
Karangetang (Siau Island, Sangihe Islands, Indonesia): incandescent lava dome (updated 24 Oct 2014)
Kavachi (Solomon Islands): no eruption since 2007 (updated 16 Jun 2014)
Kerinci (Sumatra): seismic unrest (updated 5 Jun 2013)
Kirishima (Kyushu): degassing, alert lowered (updated 25 Oct 2014)
Krakatau (Sunda Strait, Indonesia): degassing (updated 31 Mar 2014)
Kuchinoerabu-jima (Ryukyu Islands): explosion on 3 Aug 2014 (updated 5 Dec 2014)
Lokon-Empung (North Sulawesi, Indonesia): small explosions, lava flow? (updated 13 Sep 2014)
Mayon (Luzon Island): extrusion of viscous lava flow, warning of possible explosive eruption (updated 5 Dec 2014)
Medvezhia (Kurile Islands, Russia): strong steaming, thermal anomaly (updated 17 Jan 2013)
Monowai (Kermandec Islands, New Zealand): frequent submarine eruptions, last confirmed during Oct 2014 (updated 14 Nov 2014)
Nevado del Ruiz (Colombia): degassing, occasional ash emissions (updated 2 Dec 2014)
Ontake-san (Honshu): strong phreatic (?) explosion on 27 Sep 2014 (updated 14 Nov 2014)
Pacaya (Guatemala): weak strombolian activity (updated 14 Nov 2014)
Papandayan (West Java): strong hydrothermal activity, increased seismicity (updated 6 May 2013)
Pavlof (Alaska Peninsula, USA): steaming, elevated seismic activity (updated 8 Dec 2014)
Piton de la Fournaise (La Réunion): short-lived eruption during 21-22 June (updated 4 Dec 2014)
Popocatépetl (Central Mexico): degassing, sporadic explosions, slowly growing lava dome (updated 6 Nov 2014)
Rasshua (Central Kuriles)
Rincón de la Vieja (Costa Rica): phreatic explosions from crater lake (updated 21 Sep 2014)
Sabancaya (Peru): steaming, elevated seismic activity (updated 10 Nov 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 2 Sep 2014)
Sangay (Ecuador): degassing (updated 24 May 2013)
Shishaldin (United States, Aleutian Islands): mild explosive activity, intermittent more intense phases (updated 3 Dec 2014)
Stromboli (Eolian Islands, Italy): weak strombolian activity at summit vents (updated 12 Dec 2014)
Turrialba (Costa Rica): occasional ash emissions (updated 9 Dec 2014)
Ulawun (New Britain, Papua New Guinea): degassing, ash venting (updated 5 Aug 2013)

Vorig nieuws
Glow and ash emissions from Aso's Nakadake crater
Tuesday, Dec 09, 2014
Aso (Kyushu): Mild strombolian activity and ash emissions continue at Nakadake crater. ... [meer...]
The lava flow of Fogo passing near a destroyed building (image: INVOLCAN / @involcan / twitter)
Monday, Dec 08, 2014
Fogo (Cape Verde): The second village Bangaeira in the path of the rapidly advancing lava flow has been destroyed within only a few hours. ... [meer...]
Lava flow from Fogo in Portela (Asociación Canaria de Volcanología / facebook)
Sunday, Dec 07, 2014
Fogo (Cape Verde): (7 Dec) The eruption intensified according to news reports on Saturday, and destroyed most of what still had been left of Portela. The new lava flow advanced at 30 meters per hour and consumed another 20 houses and the sports center. ... [meer...]
Aerial view of the Holuhraun eruption yesterday (credit: Martin Hensch / IMO)
Friday, Dec 05, 2014
Bardarbunga (Iceland): The eruption continues to with fluctuating intensity. Lava effusion rates are still very high, but overall seem to follow a decreasing trend. Also, gas supply to the lava lake above the vent seems to be becoming less. ... [meer...]
Landsat-8 image of the area of the eruption (NASA)
Thursday, Dec 04, 2014
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. ... [meer...]

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