Abstract

SANCHEZ-HERNANDEZ, Gisely Alejandra et al. Optimal groundwater level monitoring with a fixed frequency. Tecnol. cienc. agua [online]. 2017, vol.8, n.5, pp.19-38.  Epub July 30, 2021. ISSN 2007-2422.  https://doi.org/10.24850/j-tyca-2017-05-02.

Water levels in aquifers must be continually monitored in order to adequately register variations in the dynamics of water flow in the subsurface saturated zone. In recent years, sensors have been used in abandoned wells in order to automatically measure water levels, at least one time per day. The selection of monitoring sites should be optimal in order to obtain representative information of an aquifer over time and at a low cost. This paper presents a methodology that uses space-time geostatistics to optimize the design of automated monitoring networks. The optimization criterion was the reduction in the estimation error variance of the groundwater levels at particular space-time positions and with a fixed monitoring frequency. The methodology was applied to the selection of sites to be instrumented in an aquifer in Zacatecas, Mexico.

Keywords : Optimal design of monitoring networks; space-time geostatistics; groundwater levels; automated measurement sensors.

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