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Volcanic activity worldwide 29 Dec 2013: Sinabung, Suwanose-jima, Etna, El Hierro

Sunday Dec 29, 2013 17:03 PM |

Strombolian activity at New SE crater (Etna-Web webcam)
Strombolian activity at New SE crater (Etna-Web webcam)
Strombolian activity at the NSEC
Strombolian activity at the NSEC
GPS plots of stations in northern and western El Hierro (IGN)
GPS plots of stations in northern and western El Hierro (IGN)
Suwanose-jima seen from the NE (JMA webcam)
Suwanose-jima seen from the NE (JMA webcam)
The new lava dome of Sinabung (colored lines showing its extension on 24, 25, and 26 Dec) (VSI)
The new lava dome of Sinabung (colored lines showing its extension on 24, 25, and 26 Dec) (VSI)
Etna (Sicily, Italy): Activity is rapidly increasing towards the 21st paroxysm. The New SE crater produces near continuous bright strombolian explosions accompanied by loud explosion sounds. Tremor is rising steeply.
...29 Dec:
It seems more and more likely that the next (nr 21 in 2013) New SE crater paroxysm is going to occur in the following hours or so; the tremor continues to climb rapidly and small strombolian explosions are now visible from the summit vent of the NSEC.
If you're not in Catania or near Etna, you can follow the activity live at webcams.volcanodiscovery.com/Etna.

El Hierro (Canary Islands, Spain): No new earthquakes occurred since yesterday. The seismic signals at all stations at the same time show a slight increase in what might be weak tremor or wind and ocean-wave noise.
The latest GPS deformation measurements show that some new inflation and NE displacement occurred in the northern parts of the island (HI01, HI00 and FRON stations).
... [read more]

Suwanose-jima (Tokara Islands, Japan): Bright glow from intense strombolian activity, or perhaps even the presence of a small lava lake or lava fountains, are visible on the JMA webcam on Nakanoshima island to the NE. VAAC Tokyo reports continuous low-level ash emissions.

Sinabung (Sumatra, Indonesia): (28 Dec) VSI confirmed that a new lava dome (a mass of viscous magma accumulating at the vent) has made its appearance on the northern crater of the volcano. It had a height of 56 meters and diameter of 105 meters on 26 Dec. Its volume was estimated to about 1 million cu meters, and the growth rate at 3.5 m3/second.
A major risk posed by the dome will be block-and-ash (pyroclastic) flows caused by collapse of the instable mass, once it surpasses the rims of its crater. Another hazard, often related to the previous, are explosions of trapped pressurized gas. Whether the new lava dome will produce such potentially large explosions, will depend on how gas-rich the currently erupting magma is and how effective degassing through fissures, cracks etc. works. But most similar eruptions have almost always included significant explosive activity at some point and extreme caution should be taken around the volcano. In particular, all valleys radiating from the summit area should be avoided at all times.
VSI recommends not to approach the volcano within 5 km radius (which in the case of a larger pyroclastic flow is not sufficient at all) and more than 17,000 people from about 20 villages remain evacuated.

Volcano Activity Summary for 29 Dec 2013:

Currently erupting:

Ambrym (Vanuatu): active lava lakes in several craters (updated 5 Dec 2013)
Bagana (Bougainville Island, Papua New Guinea): ash explosions (updated 10 Dec 2013)
Batu Tara (Sunda Islands, Indonesia): strombolian explosions, ash plumes up to 500 m, extrusion of a small lava dome with rockfalls (updated 6 Nov 2013)
Cleveland (Aleutian Islands, Alaska): continuous small eruptions (updated 6 May 2013)
Colima (Western Mexico): explosions and lava flows (updated 5 Dec 2013)
Dukono (Halmahera): thermal anomaly, probably small explosive activity in summit crater (updated 27 Dec 2013)
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): degassing, seismic unrest (updated 29 Dec 2013)
Fuego (Guatemala): strombolian activity at summit, lava flow emission on upper slopes (updated 16 Dec 2013)
Ibu (Halmahera, Indonesia): growing lava dome, seismic unrest (updated 23 Oct 2013)
Karymsky (Kamchatka): occasional small explosions, thermal anomaly (updated 27 Dec 2013)
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)
Klyuchevskoy (Kamchatka): ash emissions (updated 12 Dec 2013)
Nishino-shima (Volcano Islands, Japan): lava effusion enlarging the new island (updated 27 Dec 2013)
Nyiragongo (DRCongo): active lava lake in summit crater (updated 12 Jun 2013)
Ol Doinyo Lengai (Tanzania): effusion of natrocarbonatite lava inside the crater (updated 8 Jul 2013)
Pacaya (Guatemala): strombolian activity and lava flow (updated 10 Dec 2013)
Reventador (Ecuador): ash explosions, occasional pyroclastic flows (updated 14 Nov 2013)
Sakurajima (Kyushu, Japan): constant ash emissions and strong explosions (updated 24 Dec 2013)
Santa María / Santiaguito (Guatemala): Santiaguito volcano (Guatemala): lava flow on south flank of dome becomes more active (updated 10 Dec 2013)
Semeru (East Java, Indonesia): growing lava dome, ash venting and small to moderate explosions (updated 18 Oct 2013)
Shiveluch (Kamchatka): growing lava dome, incandescent avalanches, occasional explosions (updated 28 Dec 2013)
Sinabung (Sumatra, Indonesia): seismic crisis, degassing, ash venting, occasional explosions (updated 28 Dec 2013)
Stromboli (Eolian Islands, Italy): continuing lava overflows (updated 3 Nov 2013)
Suwanose-jima (Tokara Islands, Japan): strombolian to weak vulcanian explosions (updated 29 Dec 2013)
Yasur (Tanna Island, Vanuatu): ash emissions, weak strombolian explosions (updated 20 Nov 2013)
Zhupanovsky (Kamchatka, Russia): new explosive activity since 23 Oct (updated 6 Nov 2013)

Eruption warning / minor activity:

Barren Island (Indian Ocean): lava flows (?) (updated 23 Dec 2013)
Bezymianny (Central Kamchatka Depression): slow lava flow extrusion from dome (updated 13 Oct 2013)
Chaitén (Southern Chile and Argentina): degassing, possible renewed slow growth of lava dome (updated 24 Dec 2013)
Chirinkotan (Northern Kuriles): unspecified activity - possibly lava flows (updated 22 Nov 2013)
Copahue (Chile/Argentina): ash venting (updated 16 Nov 2013)
Dieng (Central Java): increased degassing (updated 28 Mar 2013)
El Hierro (Canary Islands, Spain): ongoing inflation, harmonic tremor (updated 26 Dec 2013)
Galeras (Colombia): sporadic ash emissions (updated 18 Dec 2013)
Heard (Australia, Southern Indian Ocean): likely lava lake in summit crater (updated 23 Dec 2013)
Iliwerung (Lesser Sunda Islands): possible submarine eruption from Mt Hobal on 20 August (updated 20 Aug 2013)
Jebel Zubair (Red Sea): no signs of activity after 24 Nov 2013 (updated 26 Nov 2013)
Karangetang (Siau Island, Sangihe Islands, Indonesia): lava extrusion at summit crater, strombolian activity, glowing avalanches (updated 4 Sep 2013)
Ketoi (Kurile Islands, Russia)
Kirishima (Kyushu): degassing, slightly increased seismic activity (updated 30 Jul 2012)
Kizimen (Kamchatka): degassing (updated 27 Dec 2013)
Langila (New Britain, Papua New Guinea): occasional ash explosions (updated 22 Nov 2013)
Lokon-Empung (North Sulawesi, Indonesia): small explosions, lava flow? (updated 24 Sep 2013)
Manam (Papua New Guinea): degassing, occasional ash venting (updated 5 Dec 2013)
Marapi (Western Sumatra, Indonesia): occasional ash explosions (updated 9 Dec 2013)
Merapi (Central Java): sporadic phreatic explosions (updated 12 Dec 2013)
Paluweh (off Flores Island, Indonesia): active growing lava dome (updated 27 Dec 2013)
Papandayan (West Java): strong hydrothermal activity, increased seismicity (updated 6 May 2013)
Poas (Costa Rica): occasional small phreatic explosions from lake (updated 22 Aug 2013)
Popocatépetl (Central Mexico): steam/gas/ash emissions (updated 9 Dec 2013)
Rabaul (Tavurvur) (New Britain, Papua New Guinea): weak ash explosions (updated 5 Dec 2013)
Raung (East Java): strombolian activity in summit crater (updated 5 Aug 2013)
Tangkubanparahu (West Java): occasional phreatic explosions (updated 15 Oct 2013)
Turrialba (Costa Rica): ash venting, strong degassing (updated 24 Jul 2013)
Ulawun (New Britain, Papua New Guinea): degassing, ash venting (updated 5 Dec 2013)

Vorig nieuws
Ash emission from Etna's NE crater this evening
Saturday, Dec 28, 2013
Etna (Sicily, Italy): The volcano remains restless. Ash emissions have resumed (or continue) at the NE crater. Tremor is fluctuating, but there's a slow overall rising trend. ... [meer...]
Etna this morning (Schiena dell'Asino webcam, Etna Trekking)
Friday, Dec 27, 2013
Etna (Sicily, Italy): The volcano has remained mostly calm. Ash emissions from the NE crater decreased and tremor fluctuated at low levels over the holidays. ... [meer...]
GPS measured deformation at El Hierro (IGN)
Thursday, Dec 26, 2013
El Hierro (Canary Islands, Spain): Although earthquakes have largely ceased for the moment, the island experiences ongoing rapid inflation and harmonic tremor, both signs that an eruption could be imminent. ... [meer...]
Steaming of the NE and Bocca Nova crater (Pizzo Deneri Etna Trekking webcam)
Tuesday, Dec 24, 2013
Etna (Sicily, Italy): [Unless something major happens, the last update before the holidays: Merry Christmas to all!] ... [meer...]
Map of recent earthquakes under El Hierro (IGN)
Monday, Dec 23, 2013
Etna (Sicily, Italy): No significant changes have occurred. Ash emissions, sometimes relatively strong, continued from the NE crater and the tremor shows a very slow gradual rising trend. ... [meer...]

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