Bezymianny volcano (Kamchatka): considerable pyroclastic flow deposits revealed in Landsat imagery

The Landsat 8-9 animation compares the affected area within a one-year range (image: Landsat 8-9)

Following the strong eruption at the volcano on 24 July last week, noticable pyroclastic flow deposits formed on the southeastern flank.

The latest Landsat 8-9 acquistion from 29 July detected approx. 7 km-long ignimbrites, welded pyroclastic rock formed by widespread deposition and consolidation of resulting pyroclastic density currents.

On 24 July at about 19:29 local time, the massive pyroclastic flow descended over the southeastern slope, which in turn created the tall ash plume – phoenix clouds – towering wall of cloud rising above the pyroclastic torrent, composed of ash elutriated out of flow that rose to 43,000 ft (13,100 m) altitude and extended about 130 km to the southwest and 926 km to the southeast of the volcano with approximate width of 80 km.