Analysis of aquifers zones using aeromagnetic and satellite gravimetric data in Grijalva and Usumacinta basins, Mexico

Abstract

The purpose of this study is to characterize the magnetic and gravity responses of the subsurface in the Grijalva and Usumacinta Basins of southeastern Mexico, to identify and define areas of rock units with aquifer potential. For this purpose, aeromagnetic and gravimetric satellite data were processed to delimit the geological features of greatest interest. The results show that the central-northern part of the study area corresponds to the zone with the greatest aquifer potential and coincides with the areas of greatest sedimentary thickness and where groundwater concessions are concentrated. The gradients between the magnetic and gravity responses help to identify the structural framework, including faults, fractures, edges, and geological contacts, and to infer the regions with aquifer potential. Among the transforms or filters used, the Tilt Derivative (TDR) exhibits the linear trends associated with the structural framework of hydrological interest. The work delimited permeable rock units present in the study area; however, it is important to continue with other studies focused on direct exploration and research techniques such as geological, lithological, and hydrogeological mapping, as an additional method of validating results gotten. The study aims to contribute to decision-making and research on geohydrological issues, land use planning, and related public policies.