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http://hdl.handle.net/2122/3749
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 | Journal: | Pure and apllied geophysics | Series/Report no.: | /164(2007) | Publisher: | Birkhauser Verlag | Issue Date: | 2007 | DOI: | 10.1007/s00024-007-0283-7 | Keywords: | Geochemical anomalies seismogenetic processes |
Subject Classification: | 03. 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. |
Appears in Collections: | Article published / in press |
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