Groundwater Geophysics

Sketch view of a karst system hydrogeology

Scientific issues

  • Fresh groundwater availability is today a world-scale pressing need, and the exploitation of groundwater resources plays a key-role for the next future of our planet. Thus, it’s obvious that accurate and reliable location methods are of primary importance in the decision-making of water research.

  • Sea coastal acquifers are constantly threatened by saltwater intrusion, and they will be even more in the future, given the foreseen sea-level rise. The identification of the fresh/salt water interface thus can be an important factor in land use planning.

  • Presence of water primarily alters the bulk electrical properties of the rocks and soils, according to the porosity, structure, cementation, saturation and its resistivity.

  • Water-bearing rocks also are affected by a variation in their bulk mechanical properties, leading to variations in their seismic velocities.

  • Moreover, the presence of faults and cavities (such as karsts) have a dramatic impact on the water underground propagation and accumulation.

  • Nowadays geophysics can be a reliable tool to locate groundwater resources, that can greatly aid the standard geological surveys. Our company offers high-technology water research services, carried out by means of by state-of-the-art geophysical equipments and a consolidated experience.

Geophysics’ contributions

  • Multidimensional (2D/3D) resistivity imaging aimed at reconstruct the water table surface (carried out by means of ERT and TDEM measurements)

  • Multidimensional (2D/3D) density modelling and location of the main structural lineaments and karst detection from the measured gravity field

  • Water-bearing faults location in crystalline rocks by VLF measurements

  • Identification of bedrock surface by seismic surveys

ERT survey for the study of coastal saline wedge intrusion in a sandy coastal acquifer.
3D resistivity model of the saltwater wedge intrusion.
ERT survey for groundwater location.

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