Semeru volcano (East-Java, Indonesia): large pyroclastic flow
So, 14. Feb 2016, 09:5709:57 AM | VON: T
A pyroclastic flow (hot avalanche of fragmented volcanic material) occurred on the volcano's southern side yesterday morning, reaching 4.5 km length and producing an ash plume that rose to 26,000 ft (8 km) altitude. Darwin VAAC raised the aviation color code to RED.
Pyroclastic flow at Semeru yesterday (image: Leopold Kennedy Adam @LeopoldAdam / twitter)
Another, smaller flow seems to have occurred today.
The pyroclastic flow(s) were probably caused by sudden collapse of accumulated lava on the steep upper flank - inside the volcano's breached summit crater, a flat lava dome has been growing steadily during the past months and overspilling as viscous flow into the upper part of the ravine.
Mo, 9. Nov 2015, 16:58
The lava dome inside the summit crater continues to grow slowly. Andi climbed the volcano a few days ago and observed continuous degassing, sometimes followed by minor explosions. ... Read all