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Article Dans Une Revue Pure and Applied Geophysics Année : 2023

Delineation of aquifer boundary by two vertical superconducting gravimeters in a karst hydrosystem, France

Sandeep Kumar
  • Fonction : Auteur
Séverine Rosat
Jacques Hinderer
  • Fonction : Auteur
  • PersonId : 936086
Jean-Paul Boy
M. Israil
  • Fonction : Auteur

Résumé

Mass distribution on Earth is continuously changing due to various physical processes beneath the Earth's surface or on the surface. Some of the primary sources for these mass displacements are tidal forces, atmospheric and oceanic loading, and seasonal changes in continental water distribution. The development of relative cryogenic gravimeters, the Superconducting Gravimeters (SGs), has made it possible to characterize and monitor such mass variations at orders of magnitudes as small as a few nm/s 2 (1 nm/s² ~ 10-10 g where g is the mean gravity at the Earth's surface). Our study focuses on the hydrodynamics of the 900 m thick unsaturated zone of the low-noise underground research laboratory (Laboratoire Souterrain à Bas Bruit, LSBB) located in Rustrel (France) using a unique configuration of two SGs vertically arranged 520 m depth apart. The installation of an SG (iGrav31) at the site surface several years after
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Dates et versions

hal-03833524 , version 1 (28-10-2022)

Identifiants

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Sandeep Kumar, Séverine Rosat, Jacques Hinderer, Maxime Mouyen, Jean-Paul Boy, et al.. Delineation of aquifer boundary by two vertical superconducting gravimeters in a karst hydrosystem, France. Pure and Applied Geophysics, 2023, 180 (2), pp.611-628. ⟨10.1007/s00024-022-03186-7⟩. ⟨hal-03833524⟩
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