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Volcanic activity worldwide 9 Dec 2015: Colima volcano, Turrialba, Etna

Mittwoch Dez 09, 2015 21:00 |

Ash emissions from NE crater
Ash emissions from NE crater
Ash emission from Etna's NE crater this morning
Ash emission from Etna's NE crater this morning
Explosion at Colima this morning (last evening in Mexico)
Explosion at Colima this morning (last evening in Mexico)
Weak glow at Turrialba's crater this morning
Weak glow at Turrialba's crater this morning
Etna (Sicily, Italy): Ash emissions from NE crater continue, but seem to be decreasing in intensity.
According to INGV scientists, the volcano had experienced mild inflation prior to the paroxysm last weekend, and this inflation disappeared. The earthquake swarm on the NE side, still ongoing, but also weakening, is thought to be the cause of compression stress, not extension. In that case, the scenario of a new flank eruption on the NE rift in a near future is much less likely.
...9 Dec:
Another of the summit vents seems to be becoming protagonist in the current eruptive phase: the NE crater has been producing near-continous small to moderate ash emissions throughout the night and the morning. Incandescence was occasionally seen at the base of the plumes as well, suggesting strombolian activity.
The other vents, in particular Voragine and New SE crater, have been calm.
The NE crater, formed in 1911, had not had much significant activity since 1995-1996 when it produced a series of spectacular paroxysms with associated lava flows.

Colima (Western Mexico): Explosive activity at the volcano remains quite intense. On average every 2-3 hours, vulcanian explosions occur from the summit vent, producing ash plumes (often with lightning) of up to 3-4 km height and showering the flanks with incandescent ejecta.

Turrialba (Costa Rica): During the past week, the volcano's activity has again picked up a bit. New ash emissions, have been occurring again sporadically since 1 Dec.
On 7 Dec, an eruption lasting approx. 10 minutes from 13:08 local time produced a dense plume that rose 400 m from the crater and caused light ash fall on the western slope of the volcano.
Weak incandescence is visible at night. At the moment, it is unclear if the new activity involved fresh magma or was caused by the volcano's hydrothermal system.

Volcano Activity Summary for 9 Dec 2015:

Currently erupting:

Ambrym (Vanuatu): active lava lakes in several craters (updated 24 May 2015)
Aso (Kyushu): steaming, occasional phreatomagmatic or strombolian explosions (updated 26 Oct 2015)
Bagana (Bougainville Island, Papua New Guinea): mild ash emissions (updated 26 Oct 2015)
Batu Tara (Sunda Islands, Indonesia): strombolian explosions, ash plumes up to 500 m, extrusion of a small lava dome with rockfalls (updated 28 Nov 2015)
Colima (Western Mexico): intermittent vulcanian explosions (updated 9 Dec 2015)
Copahue (Chile/Argentina): continuous ash emissions, crater glow (updated 1 Dec 2015)
Cotopaxi (Ecuador): vulcanian explosions (updated 16 Aug 2015)
Dukono (Halmahera): mild strombolian activity, continuous intense ash emissions (updated 17 Nov 2015)
Erebus (Antarctica): active lava lake in summit crater (updated 8 Dec 2014)
Erta Ale (Ethiopia): active lava lake in northern pit crater, active hornito with intermittend flow in southern crater (updated 3 Dec 2015)
Etna (Sicily, Italy): weak strombolian activity inside Voragine crater (updated 19 Apr 2014)
Fuego (Guatemala): lava flows on S and W flanks, lava fountaining from summit vent (updated 1 Dec 2015)
Ibu (Halmahera, Indonesia): stromolian and phreatomagmatic explosions (updated 29 Oct 2015)
Karangetang (Siau Island, Sangihe Islands, Indonesia): lava flow, incandescent avalanches (updated 15 Nov 2015)
Karymsky (Kamchatka): occasional small explosions, thermal anomaly (updated 21 Nov 2015)
Kilauea (Hawai'i): new lava flow from vents on NE flank of Pu'u 'O'o (updated 28 Apr 2015)
Kliuchevskoi (Kamchatka): ash emissions, weak strombolian activity (updated 11 May 2015)
Manam (Papua New Guinea): large explosion on 31 July 2015 (updated 31 Aug 2015)
Momotombo (Nicaragua): lava fountaining, ash emissions from summit crater (updated 5 Dec 2015)
Nevado del Ruiz (Colombia): intermittent ash emissions, strong degassing (updated 21 Sep 2015)
Nishino-shima (Volcano Islands, Japan): growing island (updated 21 Nov 2015)
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 10 Nov 2015)
Popocatépetl (Central Mexico): degassing, sporadic explosions, slowly growing lava dome (updated 18 Aug 2015)
Rabaul (Tavurvur) (New Britain, Papua New Guinea): lava fountains, ash emissions from Tavurvur cone (updated 12 Sep 2014)
Reventador (Ecuador): lava flow on SW flank (updated 17 Aug 2015)
Rinjani (Lombok): lava flow effusion and ash emissions from new vent on Barujari cone (updated 5 Dec 2015)
Sakurajima (Kyushu, Japan): seismic swarm, eruption warning (updated 11 Nov 2015)
Sangay (Ecuador): likely strombolian eruptions at summit crater (updated 13 Mar 2015)
Santiaguito (Guatemala): slowly growing lava dome, ash explosions, viscous lava flow extrusion, occasional pyroclastic flows (updated 1 Dec 2015)
Semeru (East Java, Indonesia): growing lava dome, lava flow, strombolian activity (updated 9 Nov 2015)
Shiveluch (Kamchatka): growing lava dome (updated 30 Oct 2015)
Sinabung (Sumatra, Indonesia): continuing pyroclastic flows (updated 11 Nov 2015)
Stromboli (Eolian Islands, Italy): weak strombolian activity at summit vents (updated 16 Apr 2015)
Suwanose-jima (Ryukyu Islands): strombolian explosions in Ontake crater (updated 1 Oct 2015)
Tungurahua (Ecuador): intermittent small ash emissions, small to moderate explosions (updated 21 Nov 2015)
Villarrica (Central Chile): small lava lake in summit crater (updated 12 May 2015)
Yasur (Tanna Island, Vanuatu): ash emissions, weak strombolian explosions (updated 13 Nov 2015)
Zhupanovsky (Kamchatka, Russia): intermittent ash emissions (updated 1 Dec 2015)

Eruption warning / minor activity:

Alaid (Northern Kuriles): probable strombolian activity in summit crater (updated 8 Oct 2015)
Asama (Honshu): occasional small explosions since 16 June 2015 (updated 22 Jun 2015)
Augustine (Cook Inlet (SW Alaska))
Barren Island (Indian Ocean): weak thermal hot spot (updated 19 Aug 2015)
Bezymianny (Central Kamchatka Depression): steaming, weak seismic activity (updated 3 Jul 2014)
Bromo (East Java, Indonesia): strong degassing, eruption warning (updated 5 Dec 2015)
Bulusan (Luzon Island, Philippines): occasional phreatic explosions (updated 16 Jun 2015)
Chirinkotan (Northern Kuriles, Russia): sporadic ash emissions (updated 28 Jul 2015)
Chirpoi (Kurile Islands, Russia): strombolian activity, lava flows entering the sea (updated 8 Nov 2015)
Heard (Australia, Southern Indian Ocean): possibly lava lake in summit crater (updated 6 Nov 2015)
Kavachi (Solomon Islands): no eruption since 2007 (updated 16 Jun 2014)
Kerinci (Sumatra): seismic unrest, steam emissions (updated 5 Jun 2013)
Kick 'em Jenny (West Indies, Grenada): volcanic unrest, eruption warning (updated 24 Jul 2015)
Krakatau (Sunda Strait, Indonesia): steaming, seismic unrest (updated 15 Nov 2015)
Kuchinoerabu-jima (Ryukyu Islands): large explosive eruption on 29 May 2015 (updated 27 Mar 2015)
Lascar (Northern Chile): sudden explosion on 30 Oct 2015 (updated 31 Oct 2015)
Lokon-Empung (North Sulawesi, Indonesia): small explosions, lava flow? (updated 13 Nov 2015)
Lopevi (Vanuatu): eruption warning (updated 16 Dec 2014)
Mayon (Luzon Island, Philippines): steaming (updated 18 Dec 2014)
Merapi (Central Java, Indonesia): sporadic phreatic explosions (updated 21 Aug 2015)
Michael (United Kingdom, South Sandwich Is): unspecified activity detected as hot spot on satellite data (updated 3 Oct 2015)
Nyamuragira (DRCongo): active lava lake (updated 29 Nov 2014)
Ontake-san (Honshu): steaming, low seismic activity (updated 18 Dec 2014)
Papandayan (West Java): steaming (updated 6 May 2013)
Pavlof (Alaska Peninsula, USA): steaming, elevated seismic activity (updated 22 Dec 2014)
Poas (Costa Rica): phreatic explosions (updated 14 Oct 2014)
Rasshua (Central Kuriles)
Raung (East Java): intra-caldera eruption with lava flow and strombolian activity (updated 27 Aug 2015)
Rincón de la Vieja (Costa Rica): phreatic explosions from crater lake (updated 21 Sep 2014)
Sabancaya (Peru): steaming, elevated seismic activity (updated 11 Oct 2015)
Sacabaya (Northern Chile, Bolivia and Argentina)
San Cristobal (Nicaragua): possible ash emission on 11 April (updated 9 Mar 2015)
San Miguel (El Salvador): degassing, seismic unrest, sporadic ash emissions (updated 28 Jan 2015)
Sangeang Api (Indonesia): weak lava extrusion from summit crater (updated 11 Nov 2015)
Sirung (Pantar Island, Indonesia ): degassing (updated 10 Jul 2015)
Slamet (Central Java): steam emissions (updated 12 Jan 2015)
Soputan (North Sulawesi, Indonesia): seismic unrest (updated 26 Oct 2015)
Telica (Nicaragua): degassing (updated 5 Dec 2015)
Turrialba (Costa Rica): sporadic ash emissions, weak crater glow (updated 9 Dec 2015)
Ubinas (Peru): occasional explosions (updated 13 Nov 2015)
Ulawun (New Britain, Papua New Guinea): degassing, ash venting (updated 5 Aug 2013)

Vorherige Nachrichten
This morning's earthquakes at the Pernicana fault of Etna
Dienstag, Dez 08, 2015
Etna (Sicily, Italy): Over the morning, surface activity at Etna's New Southeast Crater strongly decreased, and the lava flow seems no longer be active now. Tremor has dropped as well, but ash emissions and occasional explosions continue from several of the summit craters, including the Northeast. ... [mehr]
Lava fountaining and lava flow from NSEC (Photo: Emanuela / VolcanoDiscovery Italia)
Sonntag, Dez 06, 2015
Etna (Sicily, Italy): The activity at the New SE crater has been continuous all day and is still gradually increasing. A low lava fountain feeds a lava flow from the new pit crater. This flow occasionally generates small pyroclastic flows as parts of its front collapse on the steep slope. ... [mehr]
Lava fountain during Etna's 4th Voragine paroxysm
Samstag, Dez 05, 2015
Etna (Sicily, Italy): The speed at which activity increases is truly impressive. Even from webcams located more or less downwind (i.e. receiving much ash blocking clear view), the lava fountain is now visible clearly. ... [mehr]
Lava fountain from Etna's Voragine today
Freitag, Dez 04, 2015
Etna (Sicily, Italy): A second paroxysm occurred this morning from the Voragine crater. It seems to have been similarly violent as the preceding one during the early hours of yesterday. ... [mehr]
Thermal image of Voragine's lava fountain last night
Donnerstag, Dez 03, 2015
Etna (Sicily, Italy): After gradually increasing the already mentioned strombolian activity from Voragine during the evening of 2 Dec, it escalated into a short, but very violent phase of lava fountaining (paroxysm), with high lava fountains and an eruption column several kilometers high. ... [mehr]

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