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Volcanic activity worldwide 7 Dec 2016: Pacaya volcano, Dukono, Turrialba, Sabancaya, Cayambe, Copah...

Wednesday Dec 07, 2016 15:58 PM |

Map of today's active volcanoes
Map of today's active volcanoes
Lava flow from overflowing lava lake at Erta Ale
Lava flow from overflowing lava lake at Erta Ale
Satellite image of Dukono volcano on  7 Dec 2016
Satellite image of Dukono volcano on 7 Dec 2016
Pacaya's intra-crater cone in early Dec 2016 (image: Mynor Marroquin via @ClimaEnGuate / Twitter)
Pacaya's intra-crater cone in early Dec 2016 (image: Mynor Marroquin via @ClimaEnGuate / Twitter)
Ash emission from Turrialba yesterday (image: OVSICORI-UNA / facebook)
Ash emission from Turrialba yesterday (image: OVSICORI-UNA / facebook)
Current earthquakes (yellow: Sep-Dec 2016; blue: June 2016) under Cayambe (image: IGEPN)
Current earthquakes (yellow: Sep-Dec 2016; blue: June 2016) under Cayambe (image: IGEPN)
Explosion from Sabancaya this morning (IGEMMET webcam)
Explosion from Sabancaya this morning (IGEMMET webcam)
Satellite image of Copahue volcano on  6 Dec 2016
Satellite image of Copahue volcano on 6 Dec 2016
Dukono (Halmahera): Volcanic Ash Advisory Center Darwin (VAAC) issued the following report: CONTINUOUS VA EMISSIONS TO FL100 OBS VA DTG:07/1330Z

Erta Ale (Danakil depression, Ethiopia): Two participants on our tour in mid-late November sent us impressions from the very active Erta Ale volcano (lava lake currently overflowing) and Dallol (increased activity at the hot springs).
If you are interesting in joining us on a last-minute eruption special tour to the volcano, please have a look at our Erta Ale Volcano Special!

Pacaya (Guatemala): The volcano's activity has been comparably calm recently, characterized by strong degassing from the intra-crater cone that formed during the latest period (2015-16) of strombolian activity and has become impressively large, filling a good part of the crater now.
On a recent video, no ejections of lava fragments are visible, but rather near-continuous, pulsating emissions of steam and ash. These probably reflect an activity weaker than, but essentially similar to what we observed in Dec last year: spattering-type degassing ("bubbling") from the magma column inside the cone, generating near-continuous small strombolian explosions. The only real difference would be that this time the effusion rate is too low and activity too deep to eject incandescent lava spatter.
... [read more]

Turrialba (Costa Rica): The volcano continues to be restless with intermittent mild eruptive phases. After 5 days of no visible activity, it restarted to emit low-energy plumes of gas, steam and ash yesterday.
According to OVSICORI-UNA, the new phase of eruptive activity began at 7 am local time and was accompanied by a weak tremor signal, which increased from 11:30 am to fluctuating medium to high levels.
... [read more]
...7 Dec:
Volcanic Ash Advisory Center Washington (VAAC) issued the following report: ONGOING EMS

Cayambe (Ecuador): The volcano has become restless. Scientists from Ecuador's Institute of Geophysics (IGEPN) recorded an increased number of earthquakes under the volcano a new report shows. The increased seismicity could be (but not must be) a precursor of renewed activity in the medium-term future (weeks, months?).
An increase of earthquakes began on 5 June this year when a seismic swarm of earthquakes started which totaled more than 2300 events by the end of the month. The quakes occurred concentrated in an area NE of the volcano and were volcano-tectonic in origin, likely caused by a magma intrusion at depth causing pressurization and fracturing of rocks.
... [read more]

Sabancaya (Peru): The volcano continues to explode frequently, roughly every half an hour on average, producing dense ash plumes that rise up to approx. 4 km above the volcano's summit. The ash plumes have been drifting for up to 40 km to the NE, E, SE and S of the volcano before dissipating.
Peru's Geophysical Institute (IGP) reported 349 explosions during the past week (28 Nov-4 Dec 2016), an increase against 288 during the previous one. The same is valid for the other monitored parameters, indicating that the ongoing eruption is still probably building up (slowly).
... [read more]
...7 Dec:
Volcanic Ash Advisory Center Buenos Aires (VAAC) issued the following report: INTERMITTENT PUFFS OBS VA DTG:07/1245Z

Copahue (Chile/Argentina): (6 Dec) Volcanic Ash Advisory Center Buenos Aires (VAAC) issued the following report: ONGOING EMISSION OF WV GASES AND LGT VA OBS VA DTG:06/2238Z


Volcano Activity Summary for 7 Dec 2016:

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 Aug 2016)
Chirinkotan (Northern Kuriles, Russia): possible large explosion on 28 Nov 2016 (updated 28 Nov 2016)
Colima (Western Mexico): continuous explosions, lava flow on SW flank, glowing rockfalls (updated 26 Nov 2016)
Dukono (Halmahera): mild strombolian activity, continuous intense ash emissions (updated 14 Aug 2016)
Erebus (Antarctica): active lava lake in summit crater (updated 8 Dec 2014)
Erta Ale (Danakil depression, Ethiopia): overflowing lava lake (updated 7 Dec 2016)
Fuego (Guatemala): lava flows on S and W flanks, lava fountaining from summit vent (updated 28 Nov 2016)
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)
Klyuchevskoy (Kamchatka): strombolian explosions in summit crater, active lava flows on SE flank (updated 10 Oct 2016)
Masaya (Nicaragua): active lava lake ini summit crater (updated 12 Jul 2016)
Nevados de Chillán (Central Chile): sporadic ash emissions (updated 20 Nov 2016)
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 19 Sep 2016)
Popocatépetl (Central Mexico): degassing, sporadic explosions, slowly growing lava dome (updated 27 Nov 2016)
Reventador (Ecuador): lava flow on SW flank (updated 8 Aug 2016)
Sabancaya (Peru): frequent moderate explosions, intense ash emissions (updated 7 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 10 Oct 2016)
Sinabung (Sumatra, Indonesia): continuing pyroclastic flows (updated 11 Nov 2016)
Stromboli (Eolian Islands, Italy): weak, intermittent strombolian explosions (updated 21 Oct 2016)
Suwanose-jima (Ryukyu Islands): intense strombolian activity from Otake crater (updated 28 Nov 2016)
Turrialba (Costa Rica): near-continuous ash emissions (updated 7 Dec 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): steaming (updated 30 Jul 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 18 Oct 2016)
Canlaon (Central Philippines): degassing, sporadic ash emissions (updated 29 Jul 2016)
Cerro Negro (Nicaragua): increased earthquake activity (updated 16 Feb 2016)
Chikurachki (Paramushir Island): steaming, degassing (updated 23 Aug 2016)
Chirpoi (Kurile Islands, Russia): degassing, steaming (updated 29 Jul 2016)
Copahue (Chile/Argentina): mild ash and steam emissions (updated 28 Nov 2016)
Ebeko (Paramushir Island)
Etna (Sicily, Italy): weak strombolian activity in Voragine summit crater (updated 19 Apr 2014)
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)
Langila (New Britain, Papua New Guinea): ash emissions (updated 13 May 2016)
Lascar (Northern Chile): sudden explosion on 30 Oct 2015 (updated 31 Oct 2015)
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)
Mayon (Luzon Island, Philippines): volcanic unrest (updated 8 Sep 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): small active lava lake in summit caldera (as of end of April 2016) (updated 12 Jun 2016)
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)
Telica (Nicaragua): lava glow from crater, degassing, occasional light ash emissions (updated 9 May 2016)
Tungurahua (Ecuador): inflation, eruption warning (updated 5 Jun 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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