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Volcanic activity worldwide 8 Aug 2016: Reventador volcano, Sinabung, Nevados de Chillán, Cotopaxi,...

Monday Aug 08, 2016 21:00 PM |

Map of today's active volcanoes
Map of today's active volcanoes
Eruption of Sinabung this morning (image: PVMBG)
Eruption of Sinabung this morning (image: PVMBG)
Seismic drum plot from Reventador volcano CONE station showing frequent explosion signals (IGEPN)
Small ash emission at Nevados de Chillán on 6 Aug 2016
Small ash emission at Nevados de Chillán on 6 Aug 2016
Satellite image of Bristol Island volcano yesterday
Satellite image of Bristol Island volcano yesterday
Brava (Cape Verde): Seismic activity has decreased since its peak with shallow earthquakes around 2 August which had triggered fears that a new eruption could occur in the near future. Authorities remain at alert while groups of scientists are currently monitoring the situation.

Sinabung (Sumatra, Indonesia): The series of relatively frequent explosions continues. One this morning at 11:03 local time sent an ash plume to 1600 m above the summit.

Reventador (Ecuador): At the moment, this is Ecuador's most active volcano. According to the Istituto Geofisico (IGEPN), its activity is "high". A lava dome continues to grow at the summit crater.
Strong degassing generates a plume of steam and gas rising 500-1000 m and frequent small to moderate explosions produce ash plumes that rise to similar heights. In total, IGPEN counted 38 explosions during an 24 hour interval, based on seismic and webcam observations. Most of the time, these can not be observed directly due to frequent cloud cover.
Based on satellite observations, a stronger ash emission was reported by VAAC Washington this afternoon (at 14:18 UTC) with an ash plume reaching 19,000 ft (6.5 km) altitude, or approx. 2 km height above the crater.

Cotopaxi (Ecuador): The activity of the volcano, both internal (seismic, deformation etc) and at the surface, remains low. IGEPN reports that mild steaming and degassing continue.

Nevados de Chillán (Central Chile): Small, sporadic ash emissions continue to occur at the volcano on most days since they re-appeared in late July, showing that the volcano's superficial hydrothermal system remains disturbed.
According to SERNAGEOMIN volcanologists, this new phase of surface activity is being caused by a small magma intrusion at 4-5 km depth which interacts with (transfers heat and gasses into) the overlying system of circulating fluids (water and gasses) which can become over-pressurized and then generate explosions at the surface (= phreatic activity).

Bristol Island (United Kingdom, South Sandwich Is): The eruption on the remote island seems to have come to and end or paused.
During the past 2 weeks, no more traces of ash emissions or lava flows have been detected on satellite imagery and the heat signal has decreased to more or less zero.

Volcano Activity Summary for 8 Aug 2016:

Currently erupting:

Ambrym (Vanuatu): active lava lakes in several craters (updated 12 Jul 2016)
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)
Bromo (East Java, Indonesia): intermittent mild ash emissions (updated 2 Aug 2016)
Colima (Western Mexico): intermittent mild to moderate explosions (updated 29 Jul 2016)
Copahue (Chile/Argentina): strombolian activity from new intra-crater cone (updated 4 Jul 2016)
Dukono (Halmahera): mild strombolian activity, continuous intense ash emissions (updated 12 Jul 2016)
Erebus (Antarctica): active lava lake in summit crater (updated 8 Dec 2014)
Erta Ale (Danakil depression, Ethiopia): overflowing lava lake (updated 2 Mar 2016)
Fuego (Guatemala): lava flows on S and W flanks, lava fountaining from summit vent (updated 30 Jul 2016)
Gamalama (Halmahera): small ash eruption on 3 Aug 2016 (updated 5 Aug 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 28 Apr 2015)
Klyuchevskoy (Kamchatka): strombolian explosions in summit crater, active lava flows on SE flank (updated 25 Jul 2016)
Masaya (Nicaragua): active lava lake ini summit crater (updated 12 Jul 2016)
Nevado del Ruiz (Colombia): intermittent mild to moderate ash emissions (updated 29 Jul 2016)
Nyiragongo (DRCongo): new vent on crater floor (updated 1 Jun 2016)
Ol Doinyo Lengai (Tanzania): effusion of natrocarbonatite lava inside the crater (updated 8 Jul 2013)
Pacaya (Guatemala): strombolian explosions (updated 29 Jul 2016)
Popocatépetl (Central Mexico): degassing, sporadic explosions, slowly growing lava dome (updated 1 Aug 2016)
Reventador (Ecuador): lava flow on SW flank (updated 8 Aug 2016)
Sakurajima (Kyushu, Japan): sporadic vulcanian explosions from Minamidake and Showa crater (updated 25 Jul 2016)
Sangay (Ecuador): mild strombolian activity in summit crater (updated 20 May 2016)
Santiaguito (Guatemala): intermittent strong explosions from growing Caliente dome (updated 5 Aug 2016)
Semeru (East Java, Indonesia): growing lava dome, mild strombolian activity in summit crater (updated 29 Jul 2016)
Shiveluch (Kamchatka): growing lava dome (updated 29 Jul 2016)
Sinabung (Sumatra, Indonesia): continuing pyroclastic flows (updated 8 Aug 2016)
Stromboli (Eolian Islands, Italy): weak, intermittent strombolian explosions (updated 23 May 2016)
Turrialba (Costa Rica): near-continuous ash emissions (updated 25 Jul 2016)
Villarrica (Central Chile): lava lake in summit crater, spattering, strombolian explosions (updated 4 Apr 2016)
Yasur (Tanna Island, Vanuatu): ash emissions, weak strombolian explosions (updated 13 Nov 2015)

Eruption warning / minor activity:

Alaid (Northern Kuriles): strombolian activity and lava flows in summit crater (updated 21 Jul 2016)
Aso (central Kyushu, Japan): degassing, sporadic steam / ash explosions (updated 8 Mar 2016)
Awu (North Sulawesi & Sangihe Islands): seismic unrest, eruption warning (updated 13 May 2016)
Bagana (Bougainville Island, Papua New Guinea): intermittent mild ash emissions (updated 5 Aug 2016)
Barren Island (Indian Ocean): weak thermal hot spot (updated 3 Mar 2016)
Bezymianny (Central Kamchatka Depression): steaming (updated 30 Jul 2016)
Brava (Cape Verde)
Bristol Island (United Kingdom, South Sandwich Is): eruption seems to have ended (updated 8 Aug 2016)
Bulusan (Luzon Island, Philippines): degassing (updated 29 Jul 2016)
Canlaon (Central Philippines): degassing, sporadic ash emissions (updated 29 Jul 2016)
Cerro Negro (Nicaragua): increased earthquake activity (updated 16 Feb 2016)
Chirpoi (Kurile Islands, Russia): degassing, steaming (updated 29 Jul 2016)
Etna (Sicily, Italy): intermittent ash emissions from New SE crater (updated 19 Apr 2014)
Heard (Australia, Southern Indian Ocean): strombolian activity, lava flow from Mawson Peak summit crater (updated 1 Feb 2016)
Karangetang (Siau Island, Sangihe Islands, Indonesia): rockfalls, glowing lava dome (updated 13 Jan 2016)
Karymsky (Kamchatka): weak activity (rare explosions?) (updated 16 Jun 2016)
Langila (New Britain, Papua New Guinea): ash emissions (updated 13 May 2016)
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): possible intermittent ash emissions (updated 3 Jun 2016)
Momotombo (Nicaragua): intermittent vulcanian explosions (updated 29 Mar 2016)
Nevados de Chillán (Central Chile): sporadic ash emissions (updated 8 Aug 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)
Piton de la Fournaise (La Réunion): seismic unrest, inflation (updated 29 Jul 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 2 Aug 2016)
Sabancaya (Peru): steaming, elevated seismic activity (updated 12 Jul 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)
Suwanose-jima (Ryukyu Islands): steaming, occasional ash emissions from On-take crater (updated 25 Jul 2016)
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): sporadic vulcanian explosions (updated 16 Jan 2016)
Zavodovski (South Sandwich Islands (UK)): strong steaming, degassing (updated 18 Jun 2016)

Previous news
Map of today's active volcanoes
Sunday, Aug 07, 2016
Etna (Sicily, Italy): Weak strombolian activity has started from the Voragine crater and it is currently visible from the webcams. ... [more]
Map of today's active volcanoes
Friday, Aug 05, 2016
Etna (Sicily, Italy): (5 Aug) Since Wednesday (3 Aug) evening, the New SE crater has been producing intermittent small ash emissions. This activity has become more intense yesterday and seems to have decreased again today. ... [more]
Map of today's active volcanoes
Thursday, Aug 04, 2016
Bardarbunga (Central Iceland): (4 Aug) Moderate seismic unrest continues at the volcano. A swarm of earthquakes occurred yesterday afternoon under the northern caldera rim of the volcano. ... [more]
Map of today's active volcanoes
Wednesday, Aug 03, 2016
Brava (Cape Verde): Out of fear of a possible new eruption, authorities evacuated 300 people from Cova Da Joana town on Brava island. According to news reports, the National Institute of Meteorology and Geophysics recorded increased seismic activity including volcanic tremor that sparked fears an eruption could be imminent. ... [more]
Map of today's active volcanoes
Tuesday, Aug 02, 2016
Rinjani (Lombok): The volcano has remained calm since yesterday's sudden and very violent explosion. ... [more]

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