Abstract
The results of hydrogeochemical observations on the Yuzhno-Sakhalinsk mud volcano in 2010–2014 are considered. The chemical analysis of samples of mud–volcanic waters was carried out at various analytical centers, which is similar to the common situation where hydrochemical data for a volcano are obtained by different researchers. It is shown that the chemical composition of the mud–volcanic waters is relatively stable in time and space (for different gryphons of the volcano). This allows us to determine the characteristic range of hydrogeochemical indicators. For each year of observations, the coefficients of variation for the concentrations of Na, Mg, Ca, K, and HCO3 mostly range from 10 to 30%. However, the concentrations analyzed in individual samples may differ significantly from each other. These natural variations are a likely source of errors in the interpretation of hydrochemical data. In addition, it is necessary to account for the specifics of mud–volcanic waters as an object of analytical chemical investigations.
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Original Russian Text © V.V. Ershov, 2017, published in Tikhookeanskaya Geologiya, 2017, Vol. 36, No. 1, pp. 78–86.
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Ershov, V.V. On the problem of variability in the chemical composition of mud–volcanic waters: Evidence from the Yuzhno-Sakhalinsk mud volcano. Russ. J. of Pac. Geol. 11, 73–80 (2017). https://doi.org/10.1134/S1819714017010031
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DOI: https://doi.org/10.1134/S1819714017010031