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Volcanic activity worldwide 5 Feb 2017: Colima volcano, Dukono, Cleveland, Sinabung, Sabancaya, Bogoslof

Sunday Feb 05, 2017 21:00 PM |

Map of today's active volcanoes
Map of today's active volcanoes
Changes of Bogoslof Island during the recent series of explosions; The January 30-31, 2017 eruptive activity generated roughly 0.4 square kilometers of new land and as of January 31, 2017, the island area was 1.02 square kilometers, roughly three times the size of the pre-eruption island. Nearly all of this new material consists of unconsolidated pyroclastic fall and flow (surge) deposits that are highly susceptible to wave erosion and thus additional changes in the configuration of the island are likely. (image: Chris Waythomas / AVO)
Changes of Bogoslof Island during the recent series of explosions; The January 30-31, 2017 eruptive activity generated roughly 0.4 square kilometers of new land and as of January 31, 2017, the island area was 1.02 square kilometers, roughly three times the size of the pre-eruption island. Nearly all of this new material consists of unconsolidated pyroclastic fall and flow (surge) deposits that are highly susceptible to wave erosion and thus additional changes in the configuration of the island are likely. (image: Chris Waythomas / AVO)
Landsat 8 satellite image of Cleveland on 19 Jan 2017
Landsat 8 satellite image of Cleveland on 19 Jan 2017
Powerful explosion of Colima Friday afternoon 17:05 local time
Powerful explosion of Colima Friday afternoon 17:05 local time
Sinabung (Sumatra, Indonesia): Volcanic Ash Advisory Center Darwin (VAAC) issued the following report: CVGHM REPORT ERUPTION TO FL160 MOV SE AT 05/1316Z.
...4 Feb:
Volcanic Ash Advisory Center Darwin (VAAC) issued the following report: SHORT ERUPTION OBS TO FL140 MOV TO NE OBS VA DTG:04/2055Z

Dukono (Halmahera): Volcanic Ash Advisory Center Darwin (VAAC) issued the following report: CONTINUOUS VA EMISSION TO FL070 EXT E.
...5 Feb:
Volcanic Ash Advisory Center Darwin (VAAC) issued the following report: VA OBS TO FL070 EXT TO E AT 05/0050Z OBS VA DTG:05/0140Z

Bogoslof (United States, Aleutian Islands): The volcano continues to produce large explosions at intervals of 1-3 days. The latest eruption began at 01:41 UTC on February 4 (16:41, February 3 AKST) produced a small volcanic ash plume that was observed on satellite and moved towards the north over the Bering Sea at an altitude of less than 25,000 ft above sea level.
This makes the list of recent significant explosive phases at the volcano during the past 2 weeks to be 20, 22, 24, 26, 27, 31 Jan, 3 and 4 Feb. The Aviation Color Code has been swinging between RED and ORANGE in tandem with the explosive activity.
... [read more]

Cleveland (Aleutian Islands, Alaska): A new lava dome has been detected in the volcano's summit crater. The Alaska Volcano Observatory raised the Aviation Color Code to ORANGE and the Volcano Alert Level to WATCH:
"Recent satellite observations indicate that a new lava dome has been extruded and is partially filling the summit crater at Cleveland volcano. The new dome is about 70 m (230 feet) in diameter and is similar in size to previous lava domes that have developed on the floor of the crater. When lava domes have developed within the summit crater, explosive activity has sometimes followed. The extrusion of the lava dome and the increased potential for explosive activity." (AVO)

Colima (Western Mexico): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: EM ARND 05/0935Z
...5 Feb:
A large vulcanian explosion happened on Friday afternoon (around 17:30 local time), generating an ash column that rose approx 4 km and generated a pyroclastic flow on the eastern flank.
This explosion was the first significant event since a similar event on 26 Jan. During the interval and since the explosion on Friday, the volcano has had only few and very week ash puffs at irregular intervals of average 8-12 hours, with no visible ejecta nor incandescence from the crater.

Whether the recent phase of relatively frequent and very strong vulcanian explosions is gradually coming to an end because of decreasing supply of fresh, viscous and very gas-rich magma, or whether the magma supply still continues at steady (although it seems lower) rate and more strong explosive activity is going to occur in the near future is left to speculation.

Sabancaya (Peru): Volcanic Ash Advisory Center Buenos Aires (VAAC) issued the following report: ONGOING PUFF EMISSIONS
...4 Feb:
Volcanic Ash Advisory Center Buenos Aires (VAAC) issued the following report: ONGOING PUFF EMISSIONS OBS VA DTG:04/1810Z

Volcano Activity Summary for 5 Feb 2017:

Currently erupting:

Ambrym (Vanuatu): active lava lakes in several craters (updated 12 Jul 2016)
Bagana (Bougainville Island, Papua New Guinea): intermittent mild ash emissions (updated 29 Dec 2016)
Bogoslof (United States, Aleutian Islands): intermittent strong explosions (updated 5 Feb 2017)
Chirinkotan (Northern Kuriles, Russia): possible large explosion on 28 Nov 2016 (updated 28 Nov 2016)
Colima (Western Mexico): intermittent vulcanian explosions (updated 5 Feb 2017)
Dukono (Halmahera): mild strombolian activity, continuous intense ash emissions (updated 29 Dec 2016)
Erebus (Antarctica): active lava lake in summit crater (updated 8 Dec 2014)
Erta Ale (Danakil depression, Ethiopia): lava lake overflowing, caldera flooded with new lava flows, collapses inside southern caldera (updated 27 Jan 2017)
Fuego (Guatemala): lava flows on S and W flanks, lava fountaining from summit vent (updated 9 Jan 2017)
Gamalama (Halmahera): small ash eruption on 3 Aug 2016 (updated 5 Aug 2016)
Heard (Australia, Southern Indian Ocean): new eruption since June 2016 (updated 18 Oct 2016)
Ibu (Halmahera, Indonesia): stromolian and phreatomagmatic explosions (updated 29 Oct 2015)
Kilauea (Hawai'i): new surface lava flows from breakouts N and NE of Puu Oo since 24 May 2016 (updated 29 Sep 2016)
Langila (New Britain, Papua New Guinea): likely lava flows or lava dome extrusion, strombolian activity (updated 29 Dec 2016)
Lopevi (Vanuatu): probably strombolian activity in summit crater (updated 13 Jan 2017)
Masaya (Nicaragua): active lava lake ini summit crater (updated 12 Jul 2016)
Nevados de Chillán (Central Chile): intermittent ash emissions (updated 9 Jan 2017)
Nyiragongo (DRCongo): new vent on crater floor (updated 9 Sep 2016)
Ol Doinyo Lengai (Tanzania): effusion of natrocarbonatite lava inside the crater (updated 8 Jul 2013)
Piton de la Fournaise (La Réunion): eruption ended 18 Sep 2016 (updated 3 Feb 2017)
Popocatépetl (Central Mexico): degassing, sporadic explosions, slowly growing lava dome (updated 27 Nov 2016)
Reventador (Ecuador): lava flow on SW flank (updated 9 Jan 2017)
Sabancaya (Peru): frequent moderate explosions, intense ash emissions (updated 29 Dec 2016)
Sakurajima (Kyushu, Japan): sporadic vulcanian explosions from Minamidake and Showa crater (updated 22 Aug 2016)
Sangay (Ecuador): mild strombolian activity in summit crater (updated 20 May 2016)
Santiaguito (Guatemala): intermittent strong explosions from growing Caliente dome (updated 25 Aug 2016)
Semeru (East Java, Indonesia): growing lava dome, mild strombolian activity in summit crater (updated 10 Oct 2016)
Shiveluch (Kamchatka): growing lava dome (updated 29 Dec 2016)
Sinabung (Sumatra, Indonesia): continuing pyroclastic flows (updated 9 Jan 2017)
Stromboli (Eolian Islands, Italy): weak, intermittent strombolian explosions (updated 29 Dec 2016)
Suwanose-jima (Ryukyu Islands): intense strombolian activity from Otake crater (updated 28 Nov 2016)
Villarrica (Central Chile): small active lava lake in summit crater (updated 23 Aug 2016)
Yasur (Tanna Island, Vanuatu): ash emissions, weak strombolian explosions (updated 15 Sep 2016)

Eruption warning / minor activity:

Aoba (Vanuatu): steaming, possible ash emissions (updated 14 Aug 2016)
Aso (central Kyushu, Japan): degassing, sporadic steam / ash explosions (updated 8 Oct 2016)
Awu (North Sulawesi & Sangihe Islands): seismic unrest, eruption warning (updated 13 May 2016)
Barren Island (Indian Ocean): weak thermal hot spot (updated 3 Mar 2016)
Batu Tara (Sunda Islands, Indonesia): unknown, possibly weak strombolian activity (updated 25 Aug 2016)
Bezymianny (Central Kamchatka Depression): new activity since around 12 Dec (updated 29 Dec 2016)
Bristol Island (United Kingdom, South Sandwich Is): eruption seems to have ended (updated 14 Sep 2016)
Bromo (East Java, Indonesia): intense degassing, intermittent ash emissions, crater glow (updated 10 Oct 2016)
Bulusan (Luzon Island, Philippines): intermittent ash emissions, intense degassing (updated 29 Dec 2016)
Canlaon (Central Philippines): degassing, sporadic ash emissions (updated 29 Jul 2016)
Cerro Negro (Nicaragua): increased earthquake activity (updated 16 Feb 2016)
Chaitén (Southern Chile and Argentina): seismic unrest (updated 22 May 2015)
Chikurachki (Paramushir Island): steaming, degassing (updated 23 Aug 2016)
Chirpoi (Kurile Islands, Russia): degassing, steaming (updated 29 Jul 2016)
Cleveland (Aleutian Islands, Alaska): sporadic explosions (updated 5 Feb 2017)
Copahue (Chile/Argentina): mild ash and steam emissions (updated 29 Dec 2016)
Ebeko (Paramushir Island): intermittent mild ash emissions (updated 29 Dec 2016)
Etna (Sicily, Italy): ash emissions from SE crater (updated 19 Apr 2014)
Fort Selkirk (Canada)
Karangetang (Siau Island, Sangihe Islands, Indonesia): rockfalls, glowing lava dome (updated 13 Jan 2016)
Karymsky (Kamchatka): weak activity (rare explosions?) (updated 16 Jun 2016)
Kerinci (Sumatra): intermittent ash explosions (updated 5 Jun 2016)
Klyuchevskoy (Kamchatka): degassing, possibly weak strombolian activity in summit crater (updated 29 Dec 2016)
Lascar (Northern Chile): sudden explosion on 30 Oct 2015 (updated 31 Oct 2015)
Llaima (Central Chile and Argentina)
Lokon-Empung (North Sulawesi, Indonesia): seismic unrest, eruption warning (updated 9 Mar 2016)
Manam (Papua New Guinea): occasional ash emissions, thermal anomaly at crater (updated 13 Jul 2016)
Merapi (Central Java, Indonesia): sporadic phreatic explosions (updated 21 Aug 2015)
Michael (United Kingdom, South Sandwich Is): heat signal from summit crater, unknown eruptive activity (updated 28 Nov 2016)
Momotombo (Nicaragua): intermittent vulcanian explosions (updated 29 Mar 2016)
Nevado del Ruiz (Colombia): intermittent mild to moderate ash emissions (updated 18 Oct 2016)
Niigata-Yake-yama (Honshu): sporadic explosions, seismic unrest (updated 8 May 2016)
Nyamuragira (DRCongo): active lava lake in summit caldera (updated 2 Feb 2017)
Pacaya (Guatemala): degassing, deep-seated explosive activity (spattering) (updated 7 Dec 2016)
Poas (Costa Rica): sporadic phreatic explosions (updated 29 Jul 2016)
Rincón de la Vieja (Costa Rica): sproadic hydrothermal explosions (updated 3 May 2016)
Rinjani (Lombok): sudden eruption on 1 Aug 2016 (updated 29 Sep 2016)
San Miguel (El Salvador): seismic unrest, inflation, strong degassing (updated 19 Jun 2016)
Sangeang Api (Indonesia): weak lava extrusion from summit crater (updated 11 Nov 2015)
Sete Cidades (Azores)
Soufriere Hills (Montserrat, West Indies (UK)): seismic unrest, occasional light ash venting (updated 21 Mar 2013)
Telica (Nicaragua): lava glow from crater, degassing, occasional light ash emissions (updated 9 May 2016)
Tungurahua (Ecuador): inflation, eruption warning (updated 5 Jun 2016)
Turrialba (Costa Rica): sporadic mild ash emissions (updated 29 Dec 2016)
Ubinas (Peru): intermittent ash explosions (updated 4 Oct 2016)
Ulawun (New Britain, Papua New Guinea): degassing, ash venting (updated 5 Aug 2013)
White Island (New Zealand): ash venting from 2012 lava dome (updated 13 Sep 2016)
Zavodovski (South Sandwich Islands (UK)): strong steaming, degassing (updated 18 Jun 2016)
Zhupanovsky (Kamchatka, Russia): steaming / degassing (updated 20 Nov 2016)

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