E. G. Kalacheva, D. V. Melnikov, E. V. Voloshina, G. A. Karpov
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引用次数: 1
Abstract
We used data acquired during field surveys conducted over the years to study the macro component and micro component composition of water in Lake Zelenoe in the Troitsky Crater of active Maly Semyachik Volcano. We showed that the lake contains ultra-acid (pH < 1) water of sulfate–chloride composition with mineral concentrations between 8 and 42 g/L, depending on the state of the volcano. The anion composition of this lake is formed by inflow and subsequent dissolution of acid volcanic gases in an aquifer horizon situated immediately below the lake. The cation composition of the water is controlled by practically congruent dissolution of host rocks. A long period of repose was followed in 2008 by a new phase in the hydrothermal activity of the volcano lasting until today. Upon the background of a constantly increasing volume we observed increasing concentrations of main macro components (SO4, Cl, Al, Fe), and of mineral content in general.
期刊介绍：
Journal of Volcanology and Seismology publishes theoretical and experimental studies, communications, and reports on volcanic, seismic, geodynamic, and magmatic processes occurring in the areas of island arcs and other active regions of the Earth. In particular, the journal looks at present-day land and submarine volcanic activity; Neogene–Quaternary volcanism; mechanisms of plutonic activity; the geochemistry of volcanic and postvolcanic processes; geothermal systems in volcanic regions; and seismological monitoring. In addition, the journal surveys earthquakes, volcanic eruptions, and techniques for predicting them.
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