Hydrogeochemical monitoring at the active craters of Mutnovsky Volcano, Kamchatka, before and after the 2000 eruption
The Mutnovsky volcano is one of the biggest and most active volcanoes of southern Kamchatka.The most recent explosive eruption of the volcano was in 1960. Since then the volcano had been in a stage of gas-hydrotbermal activity (weak or passive eruption) that continued for more than 40 years. The Mutnovsky volcano finally erupted again on March 17, 2000. Within several hours of the eruption a steam-gas outburst reaching 2,500 m was observed. It disappeared the next day. During observations from a helicopter it was determined that the eruption took place in the northern explosive funnel of the volcanos south-western crater,which was active until mid-1950s. Hydrochemical sampling demonstrated that the eruption of March 2000 was preceded by a continuing annual increase in SO4-2/Cl- and SO4-2/F- in the Vulkannaya River, which drains Mutnovskys active craters (Gavrilenko & Gavrilenko, 2001). Continued hydrogeochemical monitoring revealed that the SO4-2/Cl- and SO4-2/F- drastically increased in the Vulkannaya River a few months before increased acfvity at Mutnovsky in May 2003. Thereafter, these parameters decreased and again started increasing up until the end of 2006.
G.M.Gavrilenko S.B.Bortnikova
Institute of Geology and Mineralogy, SB RAS, Novosibirsk, Russia Institute of Volcanology and Seismology, FEB RAS, Petropavlovsk-Kamchatsky, Russia
国际会议
第十二届水-岩相互作用国际研讨会(P0roceedings of the 12th International Symposium on Water-Rock Interaction)
昆明
英文
77-80
2007-07-31（万方平台首次上网日期，不代表论文的发表时间）