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Gaussian filter to process tracer breakthrough curves

Li, Guangquan ; Liu, Hong ; Yang, Simeng

Acta carsologica, 2019-01, Vol.48 (2), p.227-235 [Periódico revisado por pares]

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Título:
Gaussian filter to process tracer breakthrough curves
Autor: Li, Guangquan ; Liu, Hong ; Yang, Simeng
Assuntos: Cutting parameters ; Experiments ; Field study ; Field tests ; Frequency ; Gaussian process ; High frequency ; Hydrogeology ; Laboratories ; Measurement techniques ; P-waves ; Reynolds number ; Seismic waves ; Seismograms ; Seizing ; Signal processing ; Stability ; Tracers ; Variation
É parte de: Acta carsologica, 2019-01, Vol.48 (2), p.227-235
Descrição: Breakthrough curves in hydrogeology are similar to seismograms in containing a variety of undesired noises and regular interferences characterized with high frequency. In this paper, Gaussian filter for processing seismic waves is used to retain low-frequency trend of breakthrough curves and remove away high-frequency fluctuations. At first, the mathematical fundamental of the filter is introduced. Then the filter is applied to process four breakthrough curves measured in laboratory experiments, in which Gaussian parameter is set to be 0.2 and 0.5. Finally, a breakthrough curve in field test is processed with different Gaussian parameters. The results demonstrate how the parameter controls the cutting-off frequency and the filter is well controllable and very efficient in acquiring the primary trend of the curves.
Editor: Ljubljana: Scientific Research Center of the Slovenian Academy of Sciences and Art
Idioma: Inglês

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