Volcanic activity worldwide 30 Dec 2013: Sinabung, San Miguel, Etna, El Hierro
Monday Dec 30, 2013 18:03 PM |
Weak lava fountain at the New SE crater
Violent strombolian activity from Etna's NSEC
GPS plots of stations in northern and western El Hierro (IGN)
Pyroclastic flow from Sinabung this evening (photo: #D_Lingga / Twitter)
Etna (Sicily, Italy): The 21st paroxysm at the New SE crater which started last evening is still going on although it has decreased a bit. Until now, the eruption has been rather weak with no sustained tall lava fountains as during most of the paroxysms. Instead, the New SE crater continues to produce loud, spectacular near-continuous strombolian-type jets (or low, pulsating fountains) and explosions of lava bubbles. The eruption so far:
Eruption plume from today's explosion at San Miguel (photo: La Prensa Grafica)
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The 21st paroxysm at the New SE crater is in progress, but has still to reach its climax. At the moment, violent continuous strombolian explosions or low pulsating lava fountains occur at the summit vent and a lava flow has started to issue from the fissure vent on the SE flank of the cone.
El Hierro (Canary Islands, Spain): No new earthquakes have occurred, but deformation continues and shows that the current crisis is not yet over.
A new pattern is slowly emerging: while the SE areas that experienced rapid uplift (presumably by magma accumulating beneath the crust in that area) are stagnating or even showing slight subsidence (El Pinar), the northern and western areas, in particular the western El Golfo depression have started to experience uplift. The strongest deformation occurred in Sabinosa (GPS station HI03) with ground uplift of almost 3 cm during the past 24 hours. Weak tremor continues also to be present on seismic signals from this area.
Sinabung (Sumatra, Indonesia): The growing lava dome has started to produce (extremely dangerous) pyroclastic flows, as parts of the unstable mass of the viscous lava have now overtopped the crater the dome had been growing inside.
The first series of 3 flows apparently took place this morning at dawn on the southeast slope and reached up to 1.5 km length. More pyroclastic flows occurred at 17:22 and 18:36 local time, reaching maximum run-out lengths of approx. 2.5 km.
Valleys radiating from the volcano should be avoided at all times in distances up to many kilometers. During Merapi's deadly eruption in 2010, some flows reached lengths of over 20 km.
San Miguel (El Salvador): (29 Dec) A new eruption began at the volcano this morning at 10:50 am local time. A strong vulcanian-type explosion produced an ash plume of unknown but considerable (several km) height.
According to local press, ash fall was expected in the town of Chinameca and Civil Protection has begun evacuations of families residing in a radius of 3 km around the volcano.
Volcano Activity Summary for 30 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)San Miguel (El Salvador)
: new eruption on 29 Dec 2013 (updated 29 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)
: growing lava dome, pyroclastic flows, occasional explosions (updated 30 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)
Sunday, Dec 29, 2013
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. ...
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. ...
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. ...
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. ...