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Groundwater flow processes and mixing in active volcanic systems: the case of Guadalajara (Mexico)

dc.contributor.authorHernández Antonio, Arturo
dc.contributor.authorMahlknecht, Jürgen
dc.contributor.authorTamez Meléndez, Carol
dc.contributor.authorRamos Leal, José Alfredo
dc.contributor.authorRamírez Orozco, Aldo Iván
dc.contributor.authorParra, Roberto
dc.contributor.authorOrnelas-Soto, Nancy
dc.contributor.editorCopernicus Publications
dc.date.accessioned2018-03-22T23:17:34Z
dc.date.available2018-03-22T23:17:34Z
dc.date.issued2015
dc.identifier.citationHernández-Antonio, A., Mahlknecht, J., Tamez-Meléndez, C., Ramos-Leal, J., Ramírez-Orozco, A., Parra, R., Ornelas-Soto, N., and Eastoe, C. J.: Groundwater flow processes and mixing in active volcanic systems: the case of Guadalajara (Mexico), Hydrol. Earth Syst. Sci., 19, 3937-3950, https://doi.org/10.5194/hess-19-3937-2015, 2015.
dc.identifier.urihttp://hdl.handle.net/11627/3564
dc.description.abstract"Groundwater chemistry and isotopic data from 40 production wells in the Atemajac and Toluquilla valleys, located in and around the Guadalajara metropolitan area, were determined to develop a conceptual model of groundwater flow processes and mixing. Stable water isotopes (delta H-2, delta O-18) were used to trace hydrological processes and tritium (H-3) to evaluate the relative contribution of modern water in samples. Multivariate analysis including cluster analysis and principal component analysis were used to elucidate distribution patterns of constituents and factors controlling groundwater chemistry. Based on this analysis, groundwater was classified into four groups: cold groundwater, hydrothermal groundwater, polluted groundwater and mixed groundwater. Cold groundwater is characterized by low temperature, salinity, and Cl and Na concentrations and is predominantly of Na-HCO3-type. It originates as recharge at "La Primavera" caldera and is found predominantly in wells in the upper Atemajac Valley. Hydrothermal groundwater is characterized by high salinity, temperature, Cl, Na and HCO3, and the presence of minor elements such as Li, Mn and F. It is a mixed-HCO3 type found in wells from Toluquilla Valley and represents regional flow circulation through basaltic and andesitic rocks. Polluted groundwater is characterized by elevated nitrate and sulfate concentrations and is usually derived from urban water cycling and subordinately from agricultural return flow. Mixed groundwaters between cold and hydrothermal components are predominantly found in the lower Atemajac Valley. Twenty-seven groundwater samples contain at least a small fraction of modern water. The application of a multivariate mixing model allowed the mixing proportions of hydrothermal fluids, polluted waters and cold groundwater in sampled water to be evaluated. This study will help local water authorities to identify and dimension groundwater contamination, and act accordingly. It may be broadly applicable to other active volcanic systems on Earth."
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject.classificationHIDROLOGÍA
dc.titleGroundwater flow processes and mixing in active volcanic systems: the case of Guadalajara (Mexico)
dc.typearticle
dc.identifier.doihttps://doi.org/10.5194/hess-19-3937-2015
dc.rights.accessAcceso Abierto


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Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 Internacional