VOLCANO MADNESS: [Geology2] Volcanic activity worldwide 20 Oct 2015

Tuesday, October 20, 2015

[Geology2] Volcanic activity worldwide 20 Oct 2015

Volcanic activity worldwide 20 Oct 2015: Karymsky volcano, Colima, Shiveluch, Dukono, Tungurahua, Pi...

Tuesday Oct 20, 2015 18:17 PM |

Glowing avalanche at Shiveluch at night

MODIS thermal signal from Bagana (MIROVA)

Ash plume from Sinabung yesterday (image: @BeidarSinabung / twitter)

Ash column from an explosion at Colima volcano today

Seismic energy of Cotopaxi during the past weeks

Ash emission from Tungurahua yesterday

View of Piton del la Fournaise's eruption site from Piton Bert webcam before and after the eruption (note some cones have almost disappeared under the new lava)

http://www.volcanodiscovery.com/volcano-activity/news/54984/Volcanic-activity-worldwide-20-Oct-2015-Karymsky-volcano-Colima-Shiveluch-Dukono-Tungurahua-Pi.html

Karymsky (Kamchatka): An ash plume was reported this morning from the volcano drifting SE (VAAC Tokyo).

Shiveluch (Kamchatka): Activity has not changed significantly over the past weeks. Slow extrusion of viscous lava continues and triggers occasional small to moderate incandescent avalanches, mainly through the eastern corridor of the volcano's horse-shoe shaped landslide caldera where the dome is located.
Sometimes, these avalanches are strong enough to turn into pyroclastic flows that travel a few km, and generate ash plumes that rise 2-3 km above the volcano.

Bagana (Bougainville Island, Papua New Guinea): A small ash plume was reported yesterday from the volcano (VAAC Darwin). A moderate thermal anomaly from the crater remains visible on satellite data. This suggests mild ongoing effusive and/or explosive activity.

Batu Tara (Sunda Islands, Indonesia): Strombolian activity remains apparently intense. Ash plumes from the volcano have been spotted more frequently in the past weeks.

Sinabung (Sumatra, Indonesia): Explosions and pyroclastic flows continue to occur at the volcano during the past days. This morning, a pyroclastic flow traveled 2 km and produced an ash plume of 2.5 km height.

Dukono (Halmahera): Darwin VAAC reported ash plumes drifting at estimated 7,000 ft (2.1 km) 40 km to the north of the volcano

Colima (Western Mexico): The volcano continues to produce intermittent explosions of small to moderate size, typically a few times per day, that generate ash plumes that rise up to 2-3 km above the volcano.
Video of an eruption today:

Cotopaxi (Ecuador): The volcano's activity has been similar as during the past weeks. It continues toerupt a weak to moderate steam plume with more or less ash content, rising up to 1.5 km above the summit crater. Occasional weak ash falls have occurred in areas to the west and southwest of the volcano.
The following is drawn from the latest, very detailed report of the Istituto Geofisico (link below):
... [read more]

Tungurahua (Ecuador): Intermittent weak ash emissions from the volcano have been observed during the past days.

Piton de la Fournaise (La Réunion): According to the volcano observatory, the effusive phase of the eruption is over (no more activity since the sudden stop of lava effusion on Saturday). A weak tremor signal continued to be recorded this morning, probably related to degassing.
The eruption has emplaced an impressive pahoehoe (ropy) lava flow field south and southeast of Dolomieu crater (compare images from before and after the eruption).