Article thumbnail

Electrical conductivity, ground displacement, gravity changes, and gas flow at Solfatara crater (Campi Flegrei caldera, Italy): Results from numerical modeling

By A. P. Rinaldi, M. Todesco, J. Vandemeulebrouck, A. Revil and M. Bonafede


Hydrothermal fluid circulation may cause measurable gravity changes and ground deformation. We extend our previous studies and increase the number of observable parameters to include gas temperature, the rate of diffuse degassing, the extent of the degassing area, and electrical conductivity. We have carried out simulations using TOUGH2/EOS2 of a large scale hydrothermal system, then we have calculated observables arising from changes in hydrothermal fluid circulation. Our results show that fluids affect many observable parameters generating detectable signals. However, a more detailed description of the shallow subsurface is necessary to properly calculate electrical conductivity. Studies at Solfatara volcano (Campi Flegrei caldera, Italy) highlight the presence of an unsaturated layer at depth and allow to determine the position of the water table. Then, we present results from a new, small scale simulation, focused on the crater, and carried out with a new, refined meshgrid taking into account the real topography. Aim of the work is to calculate a detailed electrical conductivity map and reproduce the main features of the Solfatara crater.Published93–105JCR Journalrestricte

Topics: Electrical conductivity, 04. Solid Earth::04.08. Volcanology::04.08.99. General or miscellaneous
Publisher: 'Elsevier BV'
Year: 2011
DOI identifier: 10.1016/j.jvolgeores.2011.07.008
OAI identifier:
Provided by: Earth-prints
Download PDF:
Sorry, we are unable to provide the full text but you may find it at the following location(s):
  • (external link)

  • To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.

    Suggested articles