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Volcanic activity worldwide 23 Oct 2015: Shiveluch volcano, Dukono, Batu Tara, Sakurajima

Friday Oct 23, 2015 21:00 PM |

View of the small pyroclastic flow at Shiveluch
View of the small pyroclastic flow at Shiveluch
Shiveluch (Kamchatka): (23 Oct) A moderately sized pyroclastic flow as result of small collapse of part of the active lava dome occurred this afternoon (Kamchatka time), sending an ash plume to approx. 15,000 ft (4.5 km) altitude.
Attached is a time-lapse video on an exceptionally clear day showing the eruption in the afternoon:


Sakurajima (Kyushu, Japan): (23 Oct) The volcano has been relatively calm during the past weeks. JMA reported small explosions at the Showa crater during 13-16 October.
The Alert Level remained at 3 (on a 5-level scale).

Batu Tara (Sunda Islands, Indonesia): (23 Oct) Ash plumes from the volcano have become an almost daily observation on satellite data monitored by VAAC Darwin. This suggests that activity has picked up at the volcano (we will find out more when we are going there in November).
This morning, a plume at 5,000 ft (1.5 km) altitude drifted 35 km W from the volcano.

Dukono (Halmahera): (23 Oct) Ash emissions continue to be intense and near continuous. VAAC Darwin reported again an ash plume extending 50 km NW from the volcano this morning.

Volcano Activity Summary for 23 Oct 2015:

Currently erupting:

Ambrym (Vanuatu): active lava lakes in several craters (updated 24 May 2015)
Bagana (Bougainville Island, Papua New Guinea): ash emissions, lava dome growth (updated 20 Oct 2015)
Batu Tara (Sunda Islands, Indonesia): strombolian explosions, ash plumes up to 500 m, extrusion of a small lava dome with rockfalls (updated 23 Oct 2015)
Colima (Western Mexico): intermittent explosions from summit crater (updated 20 Oct 2015)
Cotopaxi (Ecuador): vulcanian explosions (updated 16 Aug 2015)
Dukono (Halmahera): thermal anomaly, probably small explosive activity in summit crater (updated 23 Oct 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 11 Jan 2013)
Fuego (Guatemala): lava fountaining, strong strombolian activity, lava flows (updated 16 Oct 2015)
Gamalama (Halmahera): new eruption on 18 Dec 2014 (updated 8 Sep 2015)
Ibu (Halmahera, Indonesia): stromolian and phreatomagmatic explosions (updated 14 Nov 2014)
Karangetang (Siau Island, Sangihe Islands, Indonesia): lava flow, incandescent avalanches (updated 21 Oct 2015)
Karymsky (Kamchatka): occasional small explosions, thermal anomaly (updated 20 Oct 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)
Nevado del Ruiz (Colombia): intermittent ash emissions, strong degassing (updated 21 Sep 2015)
Nishino-shima (Volcano Islands, Japan): growing island (updated 21 Oct 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 18 Aug 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)
Sakurajima (Kyushu, Japan): seismic swarm, eruption warning (updated 23 Oct 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 Oct 2015)
Semeru (East Java, Indonesia): growing lava dome, lava flow, strombolian activity (updated 16 Jun 2015)
Shiveluch (Kamchatka): growing lava dome (updated 23 Oct 2015)
Sinabung (Sumatra, Indonesia): continuing pyroclastic flows (updated 20 Oct 2015)
Soputan (North Sulawesi, Indonesia): active viscous lava flow, explosions, rockfalls, pyroclastic flows (updated 9 Mar 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)
Telica (Nicaragua): intermittent phreatic explosions (updated 27 Sep 2015)
Tungurahua (Ecuador): intermittent small ash emissions (updated 20 Oct 2015)
Villarrica (Central Chile): small lava lake in summit crater (updated 12 May 2015)
Yasur (Tanna Island, Vanuatu): ash emissions, weak strombolian explosions (updated 14 Aug 2013)

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)
Aso (Kyushu): steaming, occasional phreatomagmatic or strombolian explosions (updated 8 Oct 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)
Bulusan (Luzon Island, Philippines): occasional phreatic explosions (updated 16 Jun 2015)
Chirinkotan (Northern Kuriles): sporadic ash emissions (updated 28 Jul 2015)
Copahue (Chile/Argentina): intermittent ash emissions, strong degassing, crater incandescence (updated 18 Oct 2015)
Etna (Sicily, Italy): sporadic weak ash emissions from New SE crater (updated 19 Apr 2014)
Heard (Australia, Southern Indian Ocean): possibly lava lake in summit crater (updated 5 Dec 2014)
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 31 Mar 2014)
Kuchinoerabu-jima (Ryukyu Islands): large explosive eruption on 29 May 2015 (updated 27 Mar 2015)
Lokon-Empung (North Sulawesi, Indonesia): small explosions, lava flow? (updated 31 Aug 2015)
Lopevi (Vanuatu): eruption warning (updated 16 Dec 2014)
Mayon (Luzon Island): 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)
Piton de la Fournaise (La Réunion): eruption seems to have ended 18 Oct (updated 22 Oct 2015)
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): steaming, possibly weak lava extrusion at summit (updated 24 Aug 2015)
Shishaldin (United States, Aleutian Islands): mild explosive activity, intermittent more intense phases (updated 4 Sep 2015)
Sirung (Pantar Island, Indonesia ): degassing (updated 10 Jul 2015)
Slamet (Central Java): steam emissions (updated 12 Jan 2015)
Turrialba (Costa Rica): ash emissions, weak strombolian activity (updated 18 Aug 2015)
Ubinas (Peru): occasional explosions (updated 3 Oct 2015)
Ulawun (New Britain, Papua New Guinea): degassing, ash venting (updated 5 Aug 2013)
Zhupanovsky (Kamchatka, Russia): intermittent ash emissions (updated 22 Jun 2015)

Previous news
Thursday, Oct 22, 2015
Batu Tara (Sunda Islands, Indonesia): An ash plume at estimated 5,000 ft (1.5 km) altitude was reported extending 50 km SW of the volcano this morning (VAAC Darwin). ... [more]
Strombolian activity at Nishinoshima on 18 Oct 2015 (Japan Coast Guard)
Wednesday, Oct 21, 2015
Nishino-shima (Volcano Islands, Japan): (21 Oct) The eruption that had started in Nov 2013 still continues with no significant changes. During the most recent survey on 18 Oct by the Japanese Coast guard, strombolian activity was observed at the central vent, but lava flows no longer reached the coast of the young island, which is being affected and modified by wave erosion. ... [more]
Glowing avalanche at Shiveluch at night
Tuesday, Oct 20, 2015
Karymsky (Kamchatka): An ash plume was reported this morning from the volcano drifting SE (VAAC Tokyo). ... [more]
Ash/steam plume from Copahue last evening
Sunday, Oct 18, 2015
Copahue (Chile/Argentina): (18 Oct) Intermittent ash emissions that resumed on 6 Oct, continue from the El Agrio crater and incandescence (from hot gasses) is visible at night. The ash/steam plume has been reaching heights of up to 1 km. ... [more]
Ash plume from Sinabung during the explosion and pyroclastic flow on 13 Oct 15, 06:30 am local time (image: @LeopoldAdam / twitter)
Friday, Oct 16, 2015
Sinabung (Sumatra, Indonesia): (16 Oct) The volcano continues to slowly extrude viscous lava, which results in occasional small to moderately sized pyroclastic flows (2-3 per day on average). ... [more]

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