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Authors: Favara, R.* 
Grassa, F.* 
Madonia, P.* 
Valenza, M.* 
Title: Flow changes and geochemical anomalies in warm and cold springs associated with the 1992-1994 seismic sequence at Pollina, central Sicily, Italy
Issue Date: 2007
Series/Report no.: /164(2007)
DOI: 10.1007/s00024-007-0283-7
Keywords: Geochemical anomalies
seismogenetic processes
Subject Classification03. Hydrosphere::03.02. Hydrology::03.02.03. Groundwater processes 
Abstract: During a three-year discontinuous geochemical monitoring of some warm springs and cold discharges located in central-northern Sicily, some hydro-geochemical changes were observed. Excluding a possible related to a moderate seismic activity were accidentally identified. The observed anomalies showed amplitudes that were modulated by the different geometries and volumes of the feeding aquifers. A poroelastic aquifer contraction, a shaking-induced dilatancy theory as well as seismogenetic-induced changes in the properties of the aquifers have been proposed as possible mechanisms for the water flow and hydro-geochemical changes. These preliminary results could be used to design a monitoring network aimed at surveilling the seismic activity of the studied area from a geochemical standpoint.
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