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Volcanic activity worldwide 12 Apr 2013: Etna, Stromboli, Colima, Copahue

Friday Apr 12, 2013 16:44 PM |

Thermal webcam image of the crater area of Stromboli with an eruption from the NW vent (INGV)
Thermal webcam image of the crater area of Stromboli with an eruption from the NW vent (INGV)
The growing new lava dome and the lava flow overspilling onto the western flank (Photo: Robin des Volcans)
The growing new lava dome and the lava flow overspilling onto the western flank (Photo: Robin des Volcans)
Stromboli (Eolian Islands, Italy): Activity remains elevated. Lava continues to overspill from the lips of the NE crater, showing that the magma column stands high inside the conduit. Frequent strombolian explosions are reaching heights of 2-300 m and the tremor signal is strong again today.

Etna (Sicily, Italy): A new paroxysm, the 10th such eruption in 2013, occurred today at Etna's New SE crater, after a several days-long phase of increasingly strong strombolian explosions. It culminated with lava flows and lava fountains and a tall ash plume.
Lava flows were erupted from the "saddle" area between the two Southeast Crater cones, toward the south and then southeast, from the summit vent of the New Southeast Crater itself toward southeast, and from vents on the northeast side of the cone.
... [read more]

Colima (Western Mexico): The new lava dome continues to grow inside the crater that had formed during the eruptions in January and has by now been completely filled by the new lava. The dome overspills the old crater rims to the southerns and western sides and produces glowing avalanches as well as small ash explosions several times per hour.
A recent field report describes the dome as a blocky mass of lava, that is slightly darker than the rest of the volcano, composed of blocks of many meters in size. Part of the dome continues as a thick tongue of viscous lava stretching about 100 m down on the upper western flank. The balance between the rate of alimentation of the flow and the loss of mass during avalanches will determine how long this lava flow will reach.
... [read more]

Copahue (Chile/Argentina): A pilot reported the emission of steam, gas and minor amounts of volcanic ash from the volcano today (VAAC Buenos Aires). SERNAGEOMIN has not reported unusual activity and maintains alert level yellow.

Volcano Activity Summary for 12 Apr 2013:

Currently erupting:

Ambrym (Vanuatu): active lava lakes in several craters (updated 22 Mar 2013)
Bagana (Bougainville Island, Papua New Guinea): occasional ash explosions (updated 10 Apr 2013)
Batu Tara (Sunda Islands, Indonesia): strombolian explosions, ash plumes up to 500 m, extrusion of a small lava dome with rockfalls (updated 7 Apr 2013)
Colima (Western Mexico): frequent explosions from growing lava dome, glowing rockfalls and small pyroclastic flows (updated 12 Apr 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): ash emissions and strombolian activity at New SE crater (updated 12 Apr 2013)
Fuego (Guatemala): weak to moderate strombolian activity (updated 10 Apr 2013)
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): possible lava lake in summit crater (updated 26 Mar 2013)
Karkar (Northeast of New Guinea): possible ash eruption on 1 February (updated 15 Mar 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 4 Apr 2013)
Kizimen (Kamchatka): growing lava dome, lava flow on eastern flank, avalanches (updated 4 Apr 2013)
Lokon-Empung (North Sulawesi, Indonesia): frequent small to moderate ash explosions (updated 8 Apr 2013)
Manam (Papua New Guinea): steaming, occasional ash venting (updated 10 Apr 2013)
Nyiragongo (DRCongo): active lava lake in summit crater (updated 8 Apr 2013)
Ol Doinyo Lengai (Tanzania): spattering and lava flows of natrocarbonatite lava inside the summit crater (updated 9 Dec 2012)
Paluweh (off Flores Island, Indonesia): active growing lava dome (updated 7 Apr 2013)
Rabaul (Tavurvur) (New Britain, Papua New Guinea): ash emissions, small explosions (updated 14 Mar 2013)
Santa María / Santiaguito (Guatemala): advancing viscous active lava flows, weak occasional explosions (updated 8 Apr 2013)
Semeru (East Java, Indonesia): growing lava dome, ash venting and small to moderate explosions (updated 25 Jul 2012)
Shiveluch (Kamchatka): slow dome growth, occasional explosions and pyroclastic flows (updated 6 Apr 2013)
Stromboli (Eolian Islands, Italy): lava flow on Sciara del Fuoco, strombolian eruptions from summit craters (updated 12 Apr 2013)
Tinakula (Santa Cruz Islands, Solomon Islands): increased activity at the volcano (updated 8 Feb 2013)
Tolbachik (Kamchatka): effusion of fluid lava flows (updated 11 Apr 2013)
Yasur (Tanna Island, Vanuatu): strong strombolian activity (level 3), crater currently closed (updated 8 Apr 2013)

Eruption warning / minor activity:

Bezymianny (Central Kamchatka Depression): slow lava flow extrusion from dome (updated 10 Mar 2013)
Chirpoi (Kurile Islands, Russia): thermal anomaly at summit crater, steaming (updated 9 Jan 2013)
Dieng (Central Java): increased degassing (updated 28 Mar 2013)
Dukono (Halmahera): thermal anomaly, probably small explosive activity in summit crater (updated 15 Mar 2013)
Galeras (Colombia): ash emissions, small explosions (updated 7 Apr 2013)
Gorely (Southern Kamchatka): strong steaming (updated 10 Mar 2013)
Ibu (Halmahera, Indonesia): Thermal anomalies indicate continuing eruption, possible lava dome growth (updated 18 Oct 2012)
Karangetang (Siau Island, Sangihe Islands, Indonesia): hot spot visible at the summit (updated 9 Apr 2013)
Karymsky (Kamchatka): occasional small explosions, thermal anomaly (updated 4 Apr 2013)
Kirishima (Kyushu): degassing, slightly increased seismic activity (updated 30 Jul 2012)
Krakatau (Sunda Strait, Indonesia): occasional explosions (updated 1 Oct 2012)
Langila (New Britain, Papua New Guinea): occasional ash explosions (updated 11 Feb 2013)
Marapi (Western Sumatra, Indonesia): intermittent mild ash explosions (updated 17 Mar 2013)
Medvezhia (Kurile Islands, Russia): strong steaming, thermal anomaly (updated 17 Jan 2013)
Nevado del Ruiz (Colombia): steaming, weak ash venting (updated 10 Apr 2013)
Nyamuragira (DRCongo): Fort dégazage du cratère sommital (updated 27 Apr 2012)
Pacaya (Guatemala): weak strombolian activity from Mackenney crater (updated 10 Apr 2013)
Pagan (Mariana Islands): steaming, thermal anomaly (updated 12 Dec 2012)
Poas (Costa Rica): Small phreatic explosions on 29 October (updated 10 Apr 2013)
Popocatépetl (Central Mexico): steam and ash emissions (updated 10 Apr 2013)
Rasshua (Central Kuriles)
Reventador (Ecuador): growing lava dome, lava flows on upper flank, frequent explosions (updated 6 Apr 2013)
Rincón de la Vieja (Costa Rica): small phreatic eruption on 11 April (updated 6 Oct 2012)
Sacabaya (Northern Chile, Bolivia and Argentina)
Sakurajima (Kyushu, Japan): 0-3 weak to moderate vulcanian-style explosions per day, ash clouds up to 2-3 km altitude (updated 10 Apr 2013)
Sangay (Ecuador): no recent explosions reported (updated 25 Feb 2013)
Soputan (North Sulawesi, Indonesia): new eruption on 18 (updated 9 Nov 2012)
Suwanose-jima (Ryukyu Islands): steaming, occasional weak eruptions, elevated seismicity (updated 23 Feb 2013)
Telica (Nicaragua): ongoing seismic swarm (updated 8 Apr 2013)
Turrialba (Costa Rica): vigorous steaming, occasional phreatic explosions (updated 17 Mar 2013)
Ulawun (New Britain, Papua New Guinea): ash emissions and rumblings heard (updated 23 Mar 2013)
Villarrica (Central Chile): weak deep-seated explosive activity, steaming (updated 20 Jan 2013)

Restless / uncertain activity:

Aoba (Vanuatu): minor phreatic activity from Lake Vui (updated 8 Feb 2013)
Askja (Central Iceland): increased seismicity (updated 27 Mar 2013)
Bárdarbunga (Iceland): earthquake swarm (updated 26 Jan 2013)
Barren Island (Indian Ocean)
Bromo (East Java, Indonesia): seismic unrest, steaming (updated 3 Oct 2012)
Campi Flegrei (Phlegrean Fields) (Italy): swarm of small earthquakes related to bradyseismus (updated 6 Feb 2013)
Chaitén (Southern Chile and Argentina)
Changbaishan (China / North Korea border): increased seismic and degassing activity, deformation (updated 29 Sep 2012)
Cleveland (Aleutian Islands, Alaska): lava dome growing (updated 9 Mar 2013)
Concepción (Nicaragua): seismic unrest (updated 23 Jan 2013)
Copahue (Chile/Argentina): seismic swarms (updated 12 Apr 2013)
Cumbal (Colombia): continuing seismic swarms (updated 31 Jan 2013)
El Hierro (Canary Islands, Spain): strong seismic swarm west of the island, inflation (updated 5 Apr 2013)
Gamkonora (Halmahera): alert level lowered to yellow (updated 14 Sep 2012)
Gaua (Vanuatu)
Guntur (West Java)
Hakone (Honshu)
Hekla (Iceland): seismic unrest (updated 26 Mar 2013)
Ijen (East Java, Indonesia): increased steaming and seismicity, alert level raised on 24 July (updated 3 Apr 2013)
Irazu (Costa Rica)
Iwo-jima (Volcano Islands): weak degassing, occasional volcanic tremors (updated 22 Jan 2013)
Katla (Southern Iceland): occasional seismic swarms (updated 17 Aug 2012)
Kerinci (Sumatra)
Ketoi (Kurile Islands, Russia)
Kliuchevskoi (Kamchatka): weak seismic activity (updated 19 Mar 2013)
Kuchinoerabu-jima (Ryukyu Islands)
Kverkfjöll (Eastern Iceland): occasional small earthquake swarms (updated 21 Oct 2012)
Laguna del Maule (Central Chile): seismic unrest, deformation (updated 9 Mar 2013)
Lascar (Northern Chile, Bolivia and Argentina): steam plumes with slight ash content (updated 11 Apr 2013)
Lewotobi (Flores): steaming and seismic activity decreased, alert lowered back to 1 (out of 4) (updated 5 Apr 2012)
Loihi (United States, Hawaiian Islands): Magnitude 4.2 earthquake at Loihi (updated 26 Nov 2012)
Machin (Colombia): elevated seismic activity (updated 28 Mar 2013)
Masaya (Nicaragua): elevated seismic activity (updated 31 Mar 2013)
Mauna Loa (Big Island, Hawai'i)
Mayon (Luzon Island): steaming, increased earthquakes, slight inflation (updated 11 Nov 2012)
Merapi (Central Java): Dome collapse sometime in October (updated 21 Oct 2012)
Mt Fuji (Honshu): earthquakes at the end of January and in February 2012, new craters reported, increasing fumarolic activity (updated 4 Feb 2013)
Nevado del Huila (Colombia): degassing (updated 31 Jan 2013)
Papandayan (West Java): alert status back to 2 (updated 1 Feb 2012)
Raung (East Java): mild strombolian eruption inside the crater (updated 6 Apr 2013)
Reclus (Southern Chile and Argentina): increased number of earthquakes (updated 31 Aug 2012)
Rinjani (Lombok)
Sabancaya (Peru): degassing, earthquake swarm (updated 7 Apr 2013)
San Cristobal (Nicaragua): seismic unrest (updated 28 Mar 2013)
San Miguel (El Salvador): seismic unrest (updated 6 Apr 2013)
Sangeang Api (Indonesia): occasional weak steaming (updated 3 Jan 2013)
Sinabung (Sumatra, Indonesia)
Siple (Marie Byrd Land, Western Antarctica): possible steaming detected on 20 June (updated 28 Jun 2012)
Sirung (Pantar Island, Indonesia ): steaming and elevated seismicity (updated 27 May 2012)
Slamet (Central Java): degassing, strong fumaroles (updated 9 Aug 2012)
Sotará (Colombia): weak seismic unrest (updated 31 Jan 2013)
Soufriere Hills (Montserrat, West Indies (UK)): seismic unrest, occasional light ash venting (updated 21 Mar 2013)
Taal (Luzon, Philippines): degassing, elevated seismic activity (updated 6 Apr 2013)
Tahalra Volcanic Field (Algeria): 2 km deep volcanic earthquake on 14 february (updated 17 Feb 2013)
Talang (Sumatra)
Tambora (Sumbawa): aucune activité ces derniers mois, l'alerte est revenue à la normale (updated 6 Apr 2013)
Tiatia (Kunashir Island): weak thermal anomaly (updated 6 Sep 2012)
Tjörnes Fracture Zone (North of Iceland): continuing earthquake swarm (updated 8 Apr 2013)
To-shima (Izu Islands): seismic swarm (updated 10 Mar 2013)
Tongariro (North Island, New Zealand): strong steaming from Te Maari craters, slightly elevated seismic activity (updated 19 Feb 2013)
Torfajökull (Iceland): earthquake swarm (updated 17 Feb 2013)
Tungurahua (Ecuador): steaming, small explosions and weak ash venting (updated 6 Apr 2013)
White Island (New Zealand): minor mud and steam explosions from the active crater (updated 10 Apr 2013)

Previous news
Thermal webcam image of the crater area of Stromboli (INGV)
Thursday, Apr 11, 2013
Stromboli (Eolian Islands, Italy): Yesterday evening's lava flow has once again beeen very short-lived. Activity (effusion rate) sharply dropped late in the evening and today, only very small amounts of lava are still overspilling from the NE crater rim. Tremor and rockfall signals are much weaker as well. ... [more]
Ash emission from Etna's New SE crater (INGV webcam)
Wednesday, Apr 10, 2013
Etna (Sicily, Italy): Strombolian explosions and relatively strong ash emissions from the New SE crater have continued throughout yesterday and the night, and seem to be gradually becoming more intense. ... [more]
Explosion from the New SE crater
Tuesday, Apr 09, 2013
Etna (Sicily, Italy): Relatively strong ash explosions continue to occur from the New SE crater. At the same time, the tremor signal is rising - maybe we're about to witness the start of a new paroxysm? ... [more]
Seismic signal from Stromboli (ST8 station, INGV)
Monday, Apr 08, 2013
Stromboli (Eolian Islands, Italy): No significant changes have occurred recently. The seismic signal shows medium tremor levels with phases of medium to high values, and there are frequent (about 10 per hour), sometimes quite powerful strombolian explosions from the various active vents. Small amounts of lava sometimes overspill from the NE vent. ... [more]
Earthquakes in the TFZ during the past 48 hours (Icelandic Met Office)
Sunday, Apr 07, 2013
Tjörnes Fracture Zone (North of Iceland): The powerful earthquake swarm that started a week ago continues, but at reduced intensity compared to 2 April when the large magnitude 5.4 quake struck. Each day, hundreds of earthquakes have been occurring (more than 200 > magnitude 2 during the past 2 days). ... [more]

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