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Volcanic activity worldwide 8 Dec 2014: Cerro Negro de Mayasquer volcano, Erebus, Fogo, Fuego, Pavlo...

Monday Dec 08, 2014 21:00 PM |

The lava flow of Fogo passing near a destroyed building (image: INVOLCAN / @involcan / twitter)
The lava flow of Fogo passing near a destroyed building (image: INVOLCAN / @involcan / twitter)
Fogo's lava flow reaching Bangaeira in the background - parts of destroyed Portela in the foreground
Fogo's lava flow reaching Bangaeira in the background - parts of destroyed Portela in the foreground
Pyroclastic flow on Sinabung Saturday noon (source: Leopold Kennedy Adam ‏@LeopoldAdam / twitter)
Pyroclastic flow on Sinabung Saturday noon (source: Leopold Kennedy Adam ‏@LeopoldAdam / twitter)
Steam plume from Pavlof volcano on 5 Dec (AVO)
Steam plume from Pavlof volcano on 5 Dec (AVO)
Histogram of earthquakes at Chiles volcano (IGPEN)
Histogram of earthquakes at Chiles volcano (IGPEN)
Seismic recording from Mt. Erebus on 5 Dec 2014
Seismic recording from Mt. Erebus on 5 Dec 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.
With 2 villages destroyed, more than 1700 people displaced and without some of their most valuable economic possession, farmland, this now 15 days old eruption is the worst volcanic disaster of the century. The history of 150 years of settlement in the Cha caldera is now under lava.
... [read more]
...8 Dec:
The new lava flow, more fluid than the earlier one, continues to advance rapidly. It has reached and started to engulf Bangaeira village, downslope of the already destroyed Portela village.
If the eruption continues long enough, the lava flow, following the downwards slope, would eventually reach the eastern coast.

Sinabung (Sumatra, Indonesia): The volcano remains active and dangerous although it has been generally quieter during the past weeks as compared to the surge in activity in Oct. However, sudden collapses of the still growing lava flow and/or explosions occur from time to time: a moderately sized, 2 km long pyroclastic flow traveled down the southern flank Saturday noon (local time).

Pavlof (Alaska Peninsula, USA): Weak activity continues at the volcano. The volcano observatory showed photographs showing the volcano emitting a steam plume and reports seismic activity is still elevated.
Increased temperatures at the summit, detectable on satellite data, are coming from the recent lava flow.

Fuego (Guatemala): Explosive activity has decreased a bit and is now at average levels. The observatory reported 28 explosions of small to medium size during 24 hours (compared to 6-8 per hour at the end of Nov), and ash plumes rising up to 1000 m above the crater.

Cerro Negro de Mayasquer (Colombia): Seismic activity continues to be important. In the last week, almost 20,000 earthquakes with a daily average of 2845 were detected. 5 of them were felt by the local population, the largest one was a 3.8 event on 2 Dec at 17:58 local time.
Compared to October and November this year, when daily averages were 3740 and 4579, respectively, seismic activity has declined a lot, but remains high.
... [read more]

Erebus (Antarctica): The Mount Erebus Volcano Observatory (MEVO) reported yesterday that "it has been an active time for the last 24 hours. There were 6 significant eruptions which show up nicely on the MACZ (short period single vertical component) seismometer.
... There is no knowing if this will continue or was just a one off. It does show that gas is accumulating somewhere at depth and migrates to the lava lake as a big bubble where it bursts explosively sending volcanic bombs shooting above the lava lake and sometimes out onto the crater rim where people may be working."

Volcano Activity Summary for 8 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 7 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 8 Dec 2014)
Fuego (Guatemala): strombolian explosions from summit crater, intermittent lava flows (updated 8 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 3 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 8 Dec 2014)
Slamet (Central Java): intense strombolian explosions (updated 13 Sep 2014)
Stromboli (Eolian Islands, Italy): weak strombolian activity at summit vents (updated 22 Nov 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)
Turrialba (Costa Rica): occasional ash emissions (updated 17 Nov 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)
Ulawun (New Britain, Papua New Guinea): degassing, ash venting (updated 5 Aug 2013)

Vorig nieuws
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...]
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...]

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