俄罗斯一火山一日两次喷发

Group 1 - The Sheveluch volcano in the Kamchatka Peninsula experienced two ash eruptions on May 17, with ash reaching altitudes of 8 kilometers and 8.5 kilometers respectively [1] - The first eruption's ash plume extended 200 kilometers to the northeast, while the second eruption's ash plume extended 35 kilometers to the northeast-north [1] - The volcanic activity poses a threat to aircraft operations [1] Group 2 - Sheveluch volcano is one of the active volcanoes located at the northern end of the Kamchatka Peninsula, with an elevation of approximately 3,283 meters [2]