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Volcanic activity worldwide 20 Dec 2013: Etna

Friday Dec 20, 2013 17:03 PM |

Ash venting from the NE crater (Pizzo Deneri Etna Trekking webcam)
Ash venting from the NE crater (Pizzo Deneri Etna Trekking webcam)
Etna (Sicily, Italy): Ash emissions from the NE crater continue with little variation, suggesting deep-seated explosive degassing inside the upper conduit. Tremor is stable with a slightly increasing tendency.

Volcano Activity Summary for 20 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 18 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 15 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 6 Nov 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 16 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)
Paluweh (off Flores Island, Indonesia): active growing lava dome (updated 12 Aug 2013)
Reventador (Ecuador): ash explosions, occasional pyroclastic flows (updated 14 Nov 2013)
Sakurajima (Kyushu, Japan): constant ash emissions and strong explosions (updated 10 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 18 Dec 2013)
Sinabung (Sumatra, Indonesia): seismic crisis, degassing, ash venting, occasional explosions (updated 17 Dec 2013)
Stromboli (Eolian Islands, Italy): continuing lava overflows (updated 3 Nov 2013)
Suwanose-jima (Ryukyu Islands): Mt Ontake volcano of Suwanose-jima Island, Japan (updated 6 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 15 Dec 2013)
Bezymianny (Central Kamchatka Depression): slow lava flow extrusion from dome (updated 13 Oct 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)
Galeras (Colombia): sporadic ash emissions (updated 18 Dec 2013)
Heard (Australia, Southern Indian Ocean): likely lava lake in summit crater (updated 6 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)
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)
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)

Previous news
Ash emission from Etna's NE crater this afternoon
Thursday, Dec 19, 2013
Etna (Sicily, Italy): The ash emissions from the NE crater have increased and become near continuous. A likely cause are deep-seated explosions from a degassing active magma column. Tremor has remained low, but with a slight increase. ... [more]
Lava effusion from the new effusive vent at the lower NE flank of Etna's NSEC (photo from last evening: Emanuela / VolcanoDiscovery Italia)
Wednesday, Dec 18, 2013
Etna (Sicily, Italy): (17 Dec) Weak lava effusion continues from the fissure on the lower NE flank of the New SE crater. Explosive activity seems to have ceased and tremor has descended back to low levels. ... [more]
Thermal image of the New SE crater (INGV Catania)
Tuesday, Dec 17, 2013
Etna (Sicily, Italy): It seems that the latest, highly unusual paroxysm can be regarded as over. Lava effusion ceased (or almost completely ceased) over night and tremor has continued to drop to again low levels. ... [more]
Current tremor signal (ESLN station, INGV Catania)
Monday, Dec 16, 2013
Etna (Sicily, Italy): What started as a paroxysm has now become more a subterminal dominantly fissure eruption. Lava effusion continues from the vent at the SE base of the New SE crater, accompanied by strong, fluctuating tremor. Bad weather conditions mostly prevent good views. ... [more]
Explosions, ash and lava flow emission at Etna's New SE crater at dawn
Sunday, Dec 15, 2013
Etna (Sicily, Italy): The 20th paroxysm at the New SE crater in 2013 began yesterday evening and ended at dawn, shortly after reaching its peak. The eruption lasted relatively long, but was relatively weak in intensity (compared to previous paroxysms). It produced only relatively low pulsating lava fountains with associated ash plumes and a small lava flow to the SE towards the Valle del Bove. ... [more]

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