Identification of Groundwater Aquifers Beneath Buildings with Cement-Cast Floors Using the Microtremor Method

Gatot Yuliyanto, M Irham Nurwidyanto

Abstract


The microtremor method is a passive geophysical technique that utilizes ambient ground vibrations to characterize subsurface structures. This study aims to identify groundwater aquifers beneath a building where the surface is completely covered by cement casting, making conventional geophysical methods difficult to apply. Microtremor measurements were conducted at 15 stations using tri-axial geophones. Data processing involved preprocessing, spectral analysis, and inversion to obtain shear wave velocity (Vs), compressional wave velocity (Vp), and Poisson’s ratio. The results indicate the presence of aquifers at depths ranging from 70 m to more than 200 m. These aquifers are interpreted as confined systems with significant groundwater potential. The results demonstrate that the microtremor method provides an effective and non-invasive solution for groundwater exploration in constrained environments.

Keywords


microtremor; groundwater; aquifer; shear wave velocity; Poisson’s ratio.

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References


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DOI: http://dx.doi.org/10.52155/ijpsat.v58.1.8300

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