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Volcanic activity worldwide 26 Feb 2014: Shiveluch, Marapi, Poas, Nyiragongo, Cleveland, Veniaminof,...

Wednesday Feb 26, 2014 17:01 PM |

Glow from Shiveluch's lava dome and steam/ash plume
Glow from Shiveluch's lava dome and steam/ash plume
Phreatic eruption at Poás volcano yesterday (OVSICORI-UNA webcam)
Phreatic eruption at Poás volcano yesterday (OVSICORI-UNA webcam)
Nyiragongo's lava lake
Nyiragongo's lava lake
Shiveluch (Kamchatka): Although no larger explosions or dome collapses have occurred in the past days, the activity at the volcano remains intense and such events could happen any time again. The clear weather today showed the active lava dome still grows on both sides, produces smaller avalanches and an intense steam plume that sometimes contains volcanic ash:


Marapi (Western Sumatra, Indonesia): Another ash eruption occurred at the volcano this afternoon at 16:15 local time. According to local news quoting the local VSI volcano observatory spokesman, the eruption today was the largest in a series since the alert status had been raised on 3 August last year. Ash fell in a radius of 3 km where some villages are located.
Also according to the article, the volcano has had a total of 57 recorded eruptions since January 2014. Since all of these have been small, and Indonesia is very used to small volcanic eruptions, they hardly make any news at all (while such an event at other volcanoes would).
... [read more]

Kilauea (Hawai'i): (25 Feb) Seismic tremor levels were low w/ dropouts starting 12:30pm yesterday-32 earthquakes recorded earthquakes at Kilauea Volcano the past 24hrs

Veniaminof (Alaska Peninsula, USA): Seismicity at the volcano remains slightly above background. No other unusual activity has been seen recently.

Shishaldin (United States, Aleutian Islands): AVO keeps the alert status at yellow, although no activity has been detected recently.

Cleveland (Aleutian Islands, Alaska): Two small explosions occurred at the volcano yesterday at ~4:17 UTC February 25 (19:17 AKST February 24) and 10:35 UTC (1:35 AKST), the Alaska Volcano Observatory (AVO) reported.
The explosions were detected by infrasound and lightning alarms, and satellite data available several hours after these events confirm that small ash clouds were generated by the explosions. The events were brief, and the estimated altitude of the drifting ash clouds was about 5 km (16,000 ft) asl (AVO).

Poas (Costa Rica): An impressive phreatic eruption took place at the volcano yesterday shortly after noon (local time). So-called cypressoide-type jets of water, mud, and solid blocks were ejected in circular directions from the crater lake to heights of approx. 400 m. The webcam that captured the event was covered with mud.
According OVSICORI-UNA, seismicity has not shown significant changes, although the phreatic explosion left a signal. However, one should keep in mind, that this type of activity can and usually does occur with no warning; the crater area of Poás must currently be regarded as a high-risk zone.
The fumarole at the lake shore is emitting glow at night, indicating high temperature gasses escaping there.

Nyiragongo (DRCongo): After a pause of 2 years, Congo's Virunga National Park opens again this month. The Virunga National Park, founded in 1925, is Africa's oldest and one oldest national park and home to some of the last surviving mountain gorillas, but also two of the world's most interesting and most active volcanoes, Nyiragongo and Nyamuragira.
We all hope that the situation continues to stabilize and we can again offer expeditions to these volcanoes, probably already this summer (planned for July 2014). Stay tuned with us if you're interested in visiting!

Volcano Activity Summary for 26 Feb 2014:

Currently erupting:

Ambrym (Vanuatu): active lava lakes in several craters (updated 14 Aug 2013)
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 16 Aug 2013)
Colima (Western Mexico): explosions and lava flows (updated 19 Jul 2013)
Dukono (Halmahera): thermal anomaly, probably small explosive activity in summit crater (updated 23 Feb 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)
Etna (Sicily, Italy): lava flow from base of New SE crater, strombolian explosions / ash emissions from NSEC (updated 4 Feb 2014)
Fuego (Guatemala): strombolian explosions (updated 24 Feb 2014)
Gamalama (Halmahera): ash eruptions since 17 Sep (updated 17 Sep 2012)
Grozny (Iturup Island): fumarolic activity (updated 3 Apr 2013)
Heard (Australia, Southern Indian Ocean): likely lava lake in summit crater (updated 1 Aug 2013)
Karkar (Northeast of New Guinea): possible ash eruption on 1 February (updated 15 Mar 2013)
Karymsky (Kamchatka): occasional small explosions, thermal anomaly (updated 22 Aug 2013)
Kavachi (Solomon Islands): no eruption since 2007 (updated 2 Feb 2014)
Kilauea (Hawai'i): lava lakes in Halemau'uma'u and Pu'u 'O'o, lava flows on coastal flat and weakly active ocean entries (updated 13 Aug 2013)
Kizimen (Kamchatka): degassing (updated 22 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)
Nishino-shima (Volcano Islands): lava effusion enlarging the new island (updated 21 Feb 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)
Pacaya (Guatemala): weak strombolian activity in summit crater (updated 25 Feb 2014)
Paluweh (off Flores Island, Indonesia): active growing lava dome (updated 12 Aug 2013)
Sakurajima (Kyushu, Japan): ash venting, intermittent explosions (updated 23 Feb 2014)
Santa María / Santiaguito (Guatemala): Santiaguito volcano (Guatemala): lava flow on south flank of dome becomes more active (updated 24 Feb 2014)
Semeru (East Java, Indonesia): growing lava dome, ash venting and small to moderate explosions (updated 25 Jul 2012)
Shiveluch (Kamchatka): growing lava dome, incandescent avalanches, occasional explosions (updated 26 Feb 2014)
Sinabung (Sumatra, Indonesia): effusion of viscous lava, steaming, ash emissions (updated 23 Feb 2014)
Stromboli (Eolian Islands, Italy): continuing lava overflows (updated 25 Jul 2013)
Suwanose-jima (Ryukyu Islands): strombolian to weak vulcanian explosions (updated 24 Feb 2014)
Tinakula (Santa Cruz Islands, Solomon Islands): increased activity at the volcano (updated 8 Feb 2013)
Tungurahua (Ecuador): occasional ash explosions (updated 25 Feb 2014)
Yasur (Tanna Island, Vanuatu): ash emissions, weak strombolian explosions (updated 14 Aug 2013)

Eruption warning / minor activity:

Aso (Kyushu): occasional weak ash emissions (updated 20 Feb 2014)
Bagana (Bougainville Island, Papua New Guinea): ash explosions (updated 26 Aug 2013)
Bezymianny (Central Kamchatka Depression): steaming, degassing (updated 10 Jun 2013)
Chirinkotan (Northern Kuriles): unspecified activity - possibly lava flows (updated 20 Feb 2014)
Cleveland (Aleutian Islands, Alaska): occasional small explosions (updated 26 Feb 2014)
Copahue (Chile/Argentina): ash venting (updated 16 Aug 2013)
Dieng (Central Java): increased degassing (updated 28 Mar 2013)
Galeras (Colombia): sporadic ash emissions (updated 25 Jul 2013)
Gamkonora (Halmahera): seismic swam, minor ash emissions (updated 27 May 2013)
Ibu (Halmahera, Indonesia): growing lava dome, seismic unrest (updated 25 Feb 2014)
Iliwerung (Lesser Sunda Islands): possible submarine eruption from Mt Hobal on 20 August (updated 20 Aug 2013)
Iwo-Tori-shima (Ryukyu Islands): possible small ash eruption on 6 July 2013 (updated 6 Jul 2013)
Kelud (East Java): steaming, activity at crater unknown (updated 25 Feb 2014)
Kerinci (Sumatra): seismic unrest (updated 5 Jun 2013)
Ketoi (Kurile Islands, Russia)
Kikai (Ryukyu Islands): steaming at summit crater of Iodake, occasional weak glows (updated 5 Jun 2013)
Kirishima (Kyushu): degassing, alert lowered (updated 30 Jul 2012)
Krakatau (Sunda Strait, Indonesia): degassing (updated 27 Jun 2013)
Langila (New Britain, Papua New Guinea): occasional ash explosions (updated 11 Feb 2013)
Marapi (Western Sumatra, Indonesia): occasional ash explosions (updated 26 Feb 2014)
Medvezhia (Kurile Islands, Russia): strong steaming, thermal anomaly (updated 17 Jan 2013)
Merapi (Central Java, Indonesia): sporadic phreatic explosions (updated 24 Jul 2013)
Nyamuragira (DRCongo): steaming/degassing from pit inside summit caldera (updated 18 Jul 2013)
Papandayan (West Java): strong hydrothermal activity, increased seismicity (updated 6 May 2013)
Poas (Costa Rica): occasional small phreatic explosions, intense degassing (updated 26 Feb 2014)
Popocatépetl (Central Mexico): degassing, sporadic explosions, slowly growing lava dome (updated 24 Feb 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)
Reventador (Ecuador): ash explosions, occasional pyroclastic flows (updated 6 Feb 2014)
Rincón de la Vieja (Costa Rica): small phreatic eruption on 11 April (updated 6 Oct 2012)
Sacabaya (Northern Chile, Bolivia and Argentina)
San Cristobal (Nicaragua): seismic unrest, occasional phreatic explosions (updated 6 Feb 2014)
San Miguel (El Salvador): small explosions, seismic unrest, intense degassing (updated 21 Feb 2014)
Sangay (Ecuador): degassing (updated 24 May 2013)
Turrialba (Costa Rica): ash venting, strong degassing (updated 24 Jul 2013)
Ubinas (Peru): seismic unrest, occasional phreatic explosions (updated 16 Feb 2014)
Ulawun (New Britain, Papua New Guinea): degassing, ash venting (updated 5 Aug 2013)
White Island (New Zealand): strong degassing, volcanic tremor (updated 20 Aug 2013)

Previous news
Thermal image of the eastern flank of Etna, showing the active lava flows from the NSEC
Tuesday, Feb 25, 2014
Etna (Sicily, Italy): Mild strombolian activity from the New SE crater and weekly alimented lava effusion from the fissure vents at its eastern base continue. ... [more]
Glow from an eruption at Suwanose-jima volcano (JMA webcam)
Monday, Feb 24, 2014
Suwanose-jima (Ryukyu Islands): Activity has been higher today. The volcano had several smaller explosions today. Plumes rose to altitudes of approx 2,000 ft (1.8 km). ... [more]
The lava flows at Etna this evening
Sunday, Feb 23, 2014
Etna (Sicily, Italy): Activity has remained more or less unchanged. The lava flows from the fissure vents on the eastern flank of the New SE crater continue to be weakly alimented and produce overlapping smaller flows. Most of them only reach only few hundred meters length, and rarely descend into the steeper western wall of Valle del Bove. As a result, most lava accumulates in the less steep area at the foot of the cone. ... [more]
Glow from the active lava dome of Shiveluch this morning (KVERT webcam)
Thursday, Feb 20, 2014
Shiveluch (Kamchatka): Activity at the volcano remains elevated. The lava dome extrudes currently 2 lobes of viscous lava, a larger one on the NW side and a smaller one on the SE side, which seems to have appeared around 16 Feb. The active parts of the dome suffer frequent small to moderate-sized avalanches (mainly from the NW side). Bright glow can be seen at night. ... [more]
Steaming from Kelut this morning (new VSI webcam)
Tuesday, Feb 18, 2014
Kelud (East Java): Activity has calmed down at the volcano. The new VSI webcam shows the outer crater area covered with heavy ash deposits and only a small steam plume from the crater. ... [more]

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