Volcano news: Karymsky
Karymsky volcano (Kamchatka): activity update and field report - explosions and strong ash emissions
Our group on the ongoing expedition to Kamchatka's volcanoes was lucky enough to observe this activity from close - they stayed 3 days and 3 nights near the volcano along with scientists from the Institute of Volcanology and Seismology of Petropavlovsk.
Irina from our team reported: "On Aug 12 ... we flew to Karymsky. Had dinner. ... The next day everyone went to the volcano. Met a bear, he saw us and left. At that moment, the volcano erupted with a large ash emission, near-continuous puffs of ash lasting into the evening.
The next day, the group went to the lake, and there they also saw a bear, he walked along the shore, but he did not see them. After lunch, then bang, and the volcano produced an eruption column of about 3 km height. This phase lasted 3 hours. ...
At night, the volcano erupted again at 4 o'clock and there were beautiful red trajectories and impacts of glowing lava bombs. ... Today, the volcano erupted again, with a very large column rising about 5 km, but the top of the ash column was not well visible due to a layer of clouds. The eruption thundered very well and loudly! We had lunch and gathered our things, then waited for the the helicopter to return to civilization."
Karymsky, the most active volcano of Kamchatka's eastern volcanic zone, is a symmetrical stratovolcano constructed within a 5-km-wide caldera that formed during the early Holocene. The caldera cuts the south side of the Pleistocene Dvor volcano and is located outside the north margin of the large mid-Pleistocene Polovinka caldera, which contains the smaller Akademia Nauk and Odnoboky calderas.
Most seismicity preceding Karymsky eruptions originated beneath Akademia Nauk caldera, which is located immediately south of Karymsky volcano. The caldera enclosing Karymsky volcano formed about 7600-7700 radiocarbon years ago; construction of the Karymsky stratovolcano began about 2000 years later. The latest eruptive period began about 500 years ago, following a 2300-year quiescence. Much of the cone is mantled by lava flows less than 200 years old. Historical eruptions have been vulcanian or vulcanian-strombolian with moderate explosive activity and occasional lava flows from the summit crater.
Source: GVP, Smithsonian Institution