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http://hdl.handle.net/2122/3741
Authors: | Ciancabilla, N.* Ditta, M.* Italiano, F.* Martinelli, G.* |
Title: | The Porretta thermal springs (Northern Apennines): seismogenic structures and long-term geochemical monitoring | Journal: | Annals of Geophysics | Series/Report no.: | 4/50 (2007) | Publisher: | Editrice Compositori | Issue Date: | Aug-2007 | Keywords: | Fluids Tectonic lines monitoring geochemistry |
Subject Classification: | 04. Solid Earth::04.07. Tectonophysics::04.07.99. General or miscellaneous | Abstract: | The thermal springs of Porretta are located on a seismically active area of the Northern Apennines. In 19th Century a chemist identified anomalous behaviour of the thermal waters in concomitance with local seismic events. Recent studies assessed the geochemical features of the circulating fluids (e.g., waters carry a dissolved CH4-dominated gas phase with a radiogenic signature of the helium isotopic ratio) and observed anomalous hydrologic and geochemical signals possibly related to crustal strain phenomena due to local seismic events. Long-term geochemical monitoring was carried out from 2001 to 2006 with the aim of detecting the behaviour of the circulating fluids possibly coinciding with seismic activity. The collected data reveal a sensitivity of the thermal waters to the activity of the main fault crossing the village of Porretta and identify a «seismogenic» structure crossing the village. |
Appears in Collections: | Article published / in press Annals of Geophysics |
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Porretta_AG-50,4.pdf | main article | 1.85 MB | Adobe PDF | View/Open |
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