The Klyuchevskoy volcano in Kamchatka ejected ash to an altitude of about 5.5 kilometers above sea level, a development reported by the Institute of Volcanology and Seismology, Far Eastern Branch of the Russian Academy of Sciences. [Attribution: Institute of Volcanology and Seismology, Far Eastern Branch, Russian Academy of Sciences]
The institute notes that large, hot lava flows continue to travel along the Apakhonchichsky and Kozyrevsky trenches. These flows are driving ancient volcanic material from the trench edges, leading to ongoing instability and the periodic collapse of pyroclastic material within the surrounding terrain. [Attribution: Institute of Volcanology and Seismology, Far Eastern Branch, Russian Academy of Sciences]
Scientists observed that ash clouds reaching heights of up to 5.5 kilometers above sea level still form from time to time, and these plumes extend roughly 258 kilometers to the east of the volcano. The scale of the eruption plume highlights the widespread reach of the ash dispersion and potential disruption to aerial activity in the region. [Attribution: Institute of Volcanology and Seismology, Far Eastern Branch, Russian Academy of Sciences]
Authorities cautioned that the danger from ash emissions remained significant up to altitudes of about 7 kilometers above sea level. Ongoing volcanic processes were also noted to have implications for low-flying aircraft, particularly in airspace near Kamchatka and surrounding regions. [Attribution: Institute of Volcanology and Seismology, Far Eastern Branch, Russian Academy of Sciences]
On November 2, the Klyuchevskoy volcano reached a paroxysmal phase, described by scientists as the most intense interval of the eruption. Later assessments indicated the strongest, paroxysmal activity at the Klyuchevsky complex had subsided. These observations help scientists understand the evolving dynamics of the eruption and its potential for future activity. [Attribution: Institute of Volcanology and Seismology, Far Eastern Branch, Russian Academy of Sciences]
Earlier discussions in the scientific community included calculations about how to minimize exposure during nuclear events, underscoring the broader relevance of volcanic hazard assessment to public safety and emergency planning. [Attribution: Institute of Volcanology and Seismology, Far Eastern Branch, Russian Academy of Sciences]