Preprints
https://doi.org/10.5194/hess-2021-294
https://doi.org/10.5194/hess-2021-294

  15 Jun 2021

15 Jun 2021

Review status: this preprint is currently under review for the journal HESS.

Gravity as a tool to improve the hydrologic mass budget in karstic areas

Tommaso Pivetta1, Carla Braitenberg1, Franci Gabrovšek2, Gerald Gabriel3,4, and Bruno Meurers5 Tommaso Pivetta et al.
  • 1Department of Mathematics and Geosciences, University of Trieste, Trieste, 34128, Italy
  • 2Karst Research Institute ZRC SAZU, Postojna, 6230, Slovenia
  • 3Leibniz Institute for Applied Geophysics, Hannover, 30655, Germany
  • 4Institute of Geology, Leibniz University Hannover, Hannover, 30167, Germany
  • 5Department of Meteorology and Geophysics, University of Vienna, Wien, 1090, Austria

Abstract. Monitoring the water movements in karstic areas is a fundamental but challenging task due to the complexity of the drainage system and the difficulty in deploying a network of observations. Gravimetry offers a valid complement to classical hydrologic measurements in order to characterize such systems in which the recharge process causes temporarily accumulation of large water volumes in the voids of the epi-phreatic system. We show an innovative integration of gravimetric and hydrologic observations that constrains a hydrodynamic model of the Škocjan cave system (Slovenia). We demonstrate how the inclusion of gravity observations improves water mass budget estimates for the Škocjan area based on hydrological observations only. Finally, the detectability of water storage variations in other karstic contexts is discussed with respect to the noise performances of spring and super-conducting gravimeters.

Tommaso Pivetta et al.

Status: open (until 21 Aug 2021)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on hess-2021-294', Nolwenn Lesparre, 15 Jul 2021 reply
  • RC2: 'Comment on hess-2021-294', Gerhard Jentzsch, 27 Jul 2021 reply

Tommaso Pivetta et al.

Tommaso Pivetta et al.

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Short summary
Gravimetry offers a valid complement to classical hydrologic measurements in order to characterize karstic systems in which the recharge process causes fast accumulation of large water volumes in the voids of the epi-phreatic system. In this contribution we show an innovative integration of gravimetric and hydrologic observations to constrain a hydrodynamic model of the Škocjan caves (Slovenia). We demonstrate how the inclusion of gravity observations improves the water mass budget estimates.