Sheveluch volcano (Kamchatka, Russia): lava dome Dolphin-2 started to collapse
Mon, 28 Jun 2021, 03:57
03:57 AM | BY: MARTIN
The lava dome's cracks indicates its instability (image: volkstat.ru)
A field observation from 24 June by volcanologist Alexey Demyanchuk and his team informed that the new extruded lava dome Dolphin-2, about 200 m tall and 170 m wide at its base, started to collapse slowly as cracks occurred at the dome.
The lava dome had grown from the active lava dome and forming the "dome on top of a dome" in mid-May. The extruded lava dome stands out with a spectacularly and highly unusual, smooth, egg-like shape exactly as the previous lava dome "Dolphin".
Gravitational instability of growing lava dome may triggers block-and-ash flows (pyroclastic flows), known as Merapi-type pyroclastic density currents.
Source: Alexey Demyanchuk/volkstat.ru volcano activity update 27 June 2021
- All news about: Shiveluch volcano
- Information about: Shiveluch volcano
Previous news
Wed, 23 Jun 2021, 06:00
Sheveluch volcano (Central Kamchatka, Russia) - Smithsonian / USGS Weekly Volcanic Activity Report for 23 June-29 June 2021 (Continuing Activity)
KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 18-25 June. The newest lava block (named “Dolphin-2”) that had extruded from the top of the lava dome in February was about 200 m tall and 170 m wide at the base on 16 June; the top was slowly crumbling. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). ... Read all
Wed, 16 Jun 2021, 06:00
Sheveluch volcano (Central Kamchatka, Russia) - Smithsonian / USGS Weekly Volcanic Activity Report for 16 June-22 June 2021 (Continuing Activity)
KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 10-18 June. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). ... Read all
Show more
