Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/359
DC Field | Value | Language |
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dc.contributor.authorall | Italiano, F.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Palermo, Palermo, Italia | en |
dc.contributor.authorall | Martinelli, G.; ARPA Emilia-Romagna, Sezione di Reggio Emilia, Via Amendola 2, 42100 Reggio Emilia, Italy | en |
dc.contributor.authorall | Rizzo, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Palermo, Palermo, Italia | en |
dc.date.accessioned | 2005-08-08T15:34:51Z | en |
dc.date.available | 2005-08-08T15:34:51Z | en |
dc.date.issued | 2004-11-02 | en |
dc.identifier.uri | http://hdl.handle.net/2122/359 | en |
dc.description.abstract | In this paper we present the first geochemical data set regarding long-term monitoring of dissolved gases in thermal waters from a seismic area. Three sites in Umbria (Central Apennines, Italy) were studied both for the chemical and for the helium isotopic composition of the dissolved gases. Data were collected during and after the seismic crisis that struck the region in 1997â 1998. The chemical composition of the dissolved gases revealed that a CO2-rich gas phase was always mixed with an atmospheric-derived component dominated by N2. A normal faulting marked the beginning of the seismic activity enhancing the release of CO2 on a regional scale. Variations in both the chemical and isotopic compositions of the dissolved gases were also observed as preseismic, synseismic, and postseismic phenomena related to the seismic shock of March 1998. Those geochemical modifications were interpreted as being the consequence of a drop in the CO2 degassing rate, in good agreement with the compressive focal mechanism of that seismic event. Furthermore, this interpretation was also consistent with the geologic and tectonic setting of the study area and induced us to postulate that changes in the local rock permeability, due to crustal deformations (i.e., coseismic deformation and postseismic release), were responsible for the geochemical modifications observed. On the basis of the foregoing, we have concluded that the geochemistry of dissolved gases in groundwaters represents a useful tool for the investigation of the relationships between circulating fluids and seismic activity. | en |
dc.format.extent | 337669 bytes | en |
dc.format.extent | 503 bytes | en |
dc.format.mimetype | application/pdf | en |
dc.format.mimetype | text/html | en |
dc.language.iso | English | en |
dc.publisher.name | American Geophysical Union | en |
dc.relation.ispartof | Geochemistry, Geophysics, Geosystems | en |
dc.relation.ispartofseries | 11/5(2004) | en |
dc.subject | dissolved gases | en |
dc.subject | geochemistry | en |
dc.subject | seismic areas | en |
dc.title | Geochemical evidence of seismogenic-induced anomalies in the dissolved gases of thermal waters: A case study of Umbria (Central Apennines, Italy) both during and after the 1997-1998 seismic swarm | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.identifier.URL | http://www.agu.org/ | en |
dc.subject.INGV | 04. Solid Earth::04.01. Earth Interior::04.01.02. Geological and geophysical evidences of deep processes | en |
dc.subject.INGV | 04. Solid Earth::04.03. Geodesy::04.03.01. Crustal deformations | en |
dc.subject.INGV | 05. General::05.02. Data dissemination::05.02.01. Geochemical data | en |
dc.subject.INGV | 05. General::05.02. Data dissemination::05.02.04. Hydrogeological data | en |
dc.identifier.doi | 10.1029/2004GC000720 | en |
dc.relation.references | Amato, A., et al. (1998), The 1997 Umbria-Marche, Italy,earthquake sequence: A first look at the main shocks and aftershocks, Geophys. Res. Lett., 25(15), 2861-2864. Barba, S., and R. Basili (2000), Analysis of seismological and geological observations for moderate-size earthquakes: The Colfiorito Fault System (Central Apennines, Italy), Geophys. J. Int., 141, 241-252. Basili, R., and M. Meghraoui (2001), Coseismic and postseismic displacement related with the 1997 earthquake sequence in Umbria-Marche (central Italy), Geophys. Res. Lett., 28(14), 2695-2698. Capasso, G., and S. Inguaggiato (1998), A simple method for the determination of dissolved gases in natural waters: An application to thermal waters from Vulcano Island, Appl. Geochem., 13(5), 631-642. Chiodini, G., F. Frondini, D. M. Kerrik, J. Rogie, F. Parello, L. Peruzzi, and A. R. Zanzari (1999), Quantification of deep CO2 fluxes from central Italy: Examples of carbon balance for regional aquifers and of soil diffuse degassing, Chem. Geol., 159, 205-222. Chiodini, G., F. Frondini, C. Cardellini, F. Parello, and L. Peruzzi (2000), Rate of diffuse carbon dioxide earth degassing estimated from carbon balance of regional aquifers: The case of Central Apennine (Italy), J. Geophys. Res., 105(B4), 8423-8434. De Martini, P. M., and G. Valensise (1999), Pre-seismic slip on the 26 September 1997, Umbria-Marche earthquake fault? Unexpected clues from the analysis of 1951-1992 elevation changes, Geophys. Res. Lett., 26(13), 1953-1956. Favara, R., F. Italiano, and G. Martinelli (2001), Earthquakeinduced chemical changes in thermal waters of Umbria region during the 1997-1998 seismic swarm, Terra Nova,13(3), 227-233. Heinicke, J., F. Italiano, V. Lapenna, G. Martinelli, and P. M. Nuccio (2000), Coseismic geochemical variations in some gas emissions of Umbria region (Central Italy), Phys. Chem. Earth, 25, 289-293. Irwin, W. P., and I. Barnes (1980), Tectonic relations of carbon dioxide discharges and earthquakes, J. Geophys. Res., 85(B6), 3115-3121. Italiano, F., G. Martinelli, and P. M. Nuccio (2001), Anomalies of mantle-derived helium during the 1997-1998 seismic swarm of Umbria-Marche, Italy, Geophys. Res. Lett., 28(5), 839-842. Lotti, B. (1926), Descrizione geologica dell'Umbria, in Memorie Descrittive della Carta Geologica d'Italia, vol. XXI, 320 pp., Provveditorato Generale dello Stato, Roma. Morelli, A., G. Ekstrom, and M. Oliveri (2000), Source properties of the 1997-1998 Central Italy earthquake sequence from inversion of long-period and broad-band seismograms, J. Seismol., 4, 365-375. Stramondo, S., et al. (1999), The September 26, 1997 Colfiorito,Italy, earthquakes: Modeled coseismic surface displacements from SAR interferometry and GPS, Geophys. Res. Lett., 26, 883-886. Stute, M., C. Sonntag, J. Deak, and P. Shlosser (1992), Helium in deep circulating groundwater in the Great Hgarian Plain: Flow dynamics and crustal and mantle helium fluxes, Geochim. Cosmochim. Acta, 56, 2051-2067. Sugisaki, R., and K. Taki (1987), Simplified analysis of He, Ne and Ar dissolved in natural waters, Chem. J., 21, 21-23. Thomas, D. (1988), Geochemical precursors to seismic activity, Pure Appl. Geophys., 126, 241-265. Torgersen, T., and W. B. Clarke (1985), Helium accumulation in groundwater, I: An evaluation of sources and the continental flux of 4He in the Great Artesian Basin, Australia, Geochim. Cosmochim. Acta, 49, 1211-1218. Toutain, J. P., and J. C. Baubron (1999), Gas geochemistry and seismotectonics: A review, Tectonophysics, 304, 1-24. Valensise, G., and D. Pantosti (Eds.) (2001), Database of Potential Sources for Earthquakes Larger Than M 5.5 in Italy, Ann. Geophys., 44(3), Suppl. 1. | en |
dc.description.fulltext | partially_open | en |
dc.contributor.author | Italiano, F. | en |
dc.contributor.author | Martinelli, G. | en |
dc.contributor.author | Rizzo, A. | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Palermo, Palermo, Italia | en |
dc.contributor.department | ARPA Emilia-Romagna, Sezione di Reggio Emilia, Via Amendola 2, 42100 Reggio Emilia, Italy | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Palermo, Palermo, Italia | en |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | restricted | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Palermo, Palermo, Italia | - |
crisitem.author.dept | ARPA Emilia-Romagna | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Milano, Milano, Italia | - |
crisitem.author.orcid | 0000-0002-9465-6398 | - |
crisitem.author.orcid | 0000-0003-2225-3781 | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.classification.parent | 05. General | - |
crisitem.classification.parent | 05. General | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
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