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Authors: Italiano, F.* 
Caracausi, A.* 
Favara, R.* 
Martinelli, G.* 
Innocenzi, P.* 
Title: Geochemical Monitoring of Cold Waters during Seismicity: Implications for Earthquake-induced Modification in Shallow Aquifers
Journal: TAO -Terrestrial, Atmospheric and Oceanic sciences 
Series/Report no.: 4/16 (2005)
Publisher: Chinese Geoscience Union
Issue Date: Oct-2005
Keywords: cold waters
Subject Classification04. Solid Earth::04.04. Geology::04.04.12. Fluid Geochemistry 
Abstract: The geochemical monitoring carried out on fluids released in the Central Apennines (Umbria region) evidenced seismically-induced modifications of the physic-chemical parameters in all the released fluids, including some cold waters circulating in certain carbonate rocks that are exploited for drinking purposes. The results allowed us to recognize the presence of components of diverse origin that changed the chemical composition of the water. These components, potentially dangerous for human consumption, can be considered as being “secondary effects” on local aquifers, induced by crustal deformation. We would also stress the relationship between the circulating fluids and active tectonic structures, as we detected modifications in some springs that were apparently not located anywhere near the local faults. The temporal variations in the geochemical features of the investigated cold waters are related to the local faulting activity that occurs during seismogenesis. The geochemical monitoring that provided information on fault movements during the seismic crisis, is also able to give us information regarding faulting activity in its earlier stages.
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