Semeru volcano (East-Java, Indonesia): large pyroclastic flow
Sun, 14 Feb 2016, 09:5709:57 AM | BY: 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.
Mon, 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
Thu, 8 Oct 2015, 11:05
PVMBG reported that during August-29 September both white plumes and gray-to-brownish plumes from Semeru were observed rising as high as 600 m above the crater and drifting in multiple directions; inclement weather sometimes prevented observations. read all
Mon, 15 Jun 2015, 11:05
Japa's highest volcano has resumed its typical, intermittent ash-righ explosions. read all
Wed, 26 Nov 2014, 09:55
A recent visit at the summit of the volcano by our expedition leader Andi and Markus confirmed that "Semeru's lava dome is growing bigger and wider, and now has a diameter of 100-200 m. ... read all
Sun, 21 Sep 2014, 10:02
Semeru volcano (East Java, Indonesia) activity update: growing lava dome, lava flow, strombolian activity
Our recent tour group on Java observed mild ongoing strombolian activity in the volcano's summit crater. read all