Abstract

The early 21st century saw increased eruption activity of major volcanoes in the Northern Group of Kamchatka, namely, Sheveluch, Klyuchevskoy, Bezymianny, and the Tolbachik Fissure Zone. The growth of an extrusive dome on Sheveluch andesitic volcano has occurred, with the dome reaching a height of 600 m after 38 years of nearly uninterrupted eruption activity. An 8-year period of relative quiet was followed by ten summit eruptions and two lateral vent openings on the Klyuchevskoy basaltic volcano. Explosive–effusive eruptions were observed nearly every year on the Bezymianny andesitic volcano. A 36-year quiet period gave way to a new eruption in the Tolbachik regional fissure zone.

中文翻译：

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21世纪初，堪察加半岛北部火山群的喷发

摘要

21世纪初，堪察加北部群的主要火山爆发活动增加，即Sheveluch，Klyuchevskoy，Bezymianny和Tolbachik裂隙带。在Sheveluch安第斯山脉的火山上出现了一个挤压穹顶的生长，经过38年几乎不间断的喷发活动，该穹顶达到了600 m的高度。在经历了8年的相对平静之后，Klyuchevskoy玄武岩火山爆发了十次山顶喷发，并形成了两个侧向通风孔。几乎每年在Bezymianny安第斯山脉的火山中都观察到爆炸性喷发。36年的平静期让位于Tolbachik地区裂隙区的一次新火山喷发。