Sinabung volcano (Sumatra): eruption news and activity updates
Sinabung volcano (Sumatra, Indonesia) activity update
Monday Jan 06, 2014 13:59 PM | BY: T
The flat, cake-like lava dome of Sinabung (Photo: Sutopo Purwo Nugroho/BNPB)
Pyroclastic flow this morning
Large pyroclastic flow this afternoon
Hazard map of Sinabung with 5 and 7 km radius
Activity has remained high, with reported 60 explosions/pyroclastic flows today, according to Karo News. The size of the flows continues to increase gradually and approaches 5 km distance.
The glowing lava dome and glowing deposits from a pyroclastic flow at night (Photo: Dailybhaskar.com))
The largest pyroclastic flow day today at 16:49 p.m. (local time) reached 4.5 km and seems to have involved the whole southeastern slope.
Authorities extended the exclusion zone to 7 km on the southeast side where the pyroclastic flows are currently channeled. The number of evacuated is reported as 20,331.
Pictures show that the lava dome has a flat cake-like surface, which suggests either a relative modest viscosity (allowing it to deform and flatten more easily) and/or a low extrusion rate. Both factors contribute to prevent the build-up of a steeper (and more dangerous) dome.
Links / Sources:
Links / Sources:
- PHOTOS: 'Furious' Mount Sinabung volcano erupts, displaces 20,000 people (Dailybhaskar.com)
- Sutopo Purwo Nugroho/BNPB (Twitter)
- Sinabung: hausse partielle de la zone d'exclusion (Blog Culture Volcan)
Sunday, Jan 05, 2014
The current eruption, characterized by the growing lava dome producing numerous explosions and pyroclastic flows, continues at increasing levels. ... [more]
Friday, Jan 03, 2014
More explosions (and probably pyroclastic flows) occurred this morning. An ash plume rose to estimated 24,000 ft (7.3 km) altitude. [more]
Thursday, Jan 02, 2014
The volcano's eruption continues with increasing and more and more frequent (every 15 minutes) explosions and pyroclastic flows from the growing lava dome. Ash plumes have been reaching 20,000 ft (6 km) altitude, run-out lengths of the pyroclastic flows approx. 2-3 km. ... [more]
Tuesday, Dec 31, 2013
More and increasingly larger (and hence more dangerous) pyroclastic flows are being formed by the growing lava dome of the volcano. These "flows" are hot turbulent avalanches of hot blocks and ash in suspension with hot gas and air, that can travel down at great speed the slopes of the mountain, typically following the paths of valleys. ... [more]
Monday, Dec 30, 2013
The growing lava dome has started to produce (extremely dangerous) pyroclastic flows, as parts of the unstable mass of the viscous lava have now overtopped the crater the dome had been growing inside. ... [more]