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http://dx.doi.org/10.14770/jgsk.2018.54.5.579

A study on propagation of uncertainties for a mixing ratio calculation by seawater intrusion  

Lee, Jeonghoon (Dept. of Science Education, Ewha Womans University)
Publication Information
Journal of the Geological Society of Korea / v.54, no.5, 2018 , pp. 579-584 More about this Journal
Abstract
It is crucial to determine a mixing ratio using an end-member mixing analysis when there is seawater intrusion. In this study, an error from the calculation of the mixing ratio between seawater and freshwater based on the principles of uncertainty was determined. I present the errors in the calculated mixing ratios as a function of the chemical difference between the mean seawater concentrations and standard deviations. The error is caused by: (1) the mixing ratio between seawater and freshwater; (2) the difference between the mean concentration and the standard deviation; and (3) the difference of the tracer concentration between freshwater and seawater (inversely). In particular, the error may determine hydrogeochemical process (either precipitation or dissolution) when a value of ionic delta (difference between measured and theoretical concentration) is close to zero during cation exchange by seawater intrusion.
Keywords
seawater intrusion; uncertainty; mixing ratio; cation exchange;
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