Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/846
DC FieldValueLanguage
dc.contributor.authorallTassi, F.; Dipartimento di Scienze della Terra, Università degli Studi di Firenze, Italy-
dc.contributor.authorallVaselli, O.; Dipartimento di Scienze della Terra, Università degli Studi di Firenze, Italy-
dc.contributor.authorallBarboza, V.; Volcanological and Seismological Observatory, Universidad Nacional, Heredia, Costa Rica-
dc.contributor.authorallFernandez, E.; Volcanological and Seismological Observatory, Universidad Nacional, Heredia, Costa Rica-
dc.contributor.authorallDuarte, E.; Volcanological and Seismological Observatory, Universidad Nacional, Heredia, Costa Rica-
dc.date.accessioned2006-02-22T08:56:35Z-
dc.date.available2006-02-22T08:56:35Z-
dc.date.issued2004-
dc.identifier.urihttp://hdl.handle.net/2122/846-
dc.description.abstractTurrialba Volcano, located in Central-Southern Costa Rica, has been characterized, since the last period of eruptive activity in 1884-1886, by a weak and discontinuous fumarolic activity in the western area of its summit. During the 1998-2002 period, fumaroles discharging from central and West craters were collected for chemical analyses of major and trace gas compounds, 13C/12C in CO2 and 18O/16O and D/H (in one fumarolic condensate), isotopic ratios. Geophysical measurements (seismic activity and ground deformation), monitored in the same period, were compared to geochemical data to define the status of the volcanic system. Chemical and isotopic characteristics of fumaroles of Turrialba Volcano seem to be related to interaction processes between a magmatic source and a shallower hydrothermal aquifer. Since February 1997, seismicity at Turrialba Volcano gradually increased, while since August 2001 new fumaroles start to discharge from a new fracture system located in the area between central and West craters. Since September 2001, strong compositional changes of gas discharges have been recorded at central crater. These occurrences are possibly due to variations in the permeability of the conduit system feeding the fumaroles. Heat pulse episodes from a magmatic source have possibly caused the increase of vapour pressure at depth and, consequently, favoured the uprising of the magmatic fluids toward the surface. The observed evolution of chemical and physical parameters suggests that to forecast a possible renewal of the volcanic activity in the near future a full program of both geochemical and geophysical surveillance must be provided at Turrialba Volcano.en
dc.format.extent921688 bytes-
dc.format.mimetypeapplication/pdf-
dc.language.isoengen
dc.publisher.nameINGVen
dc.relation.ispartofAnnals of Geophysicsen
dc.relation.ispartofseries4/47 (2004)en
dc.subjectvolcanic gasesen
dc.subjectvolcanic hazarden
dc.subjectgeochemical monitoringen
dc.subjectgeophysical monitoringen
dc.subjectTurrialba Volcanoen
dc.titleFluid geochemistry and seismic activityin the period 1998-2002 at Turrialba Volcano (Costa Rica)en
dc.typearticleen
dc.description.statuspublisheden_US
dc.type.QualityControlPeer-revieweden
dc.subject.INGV05. General::05.02. Data dissemination::05.02.01. Geochemical dataen
dc.description.journalTypeJCR Journalen
dc.description.fulltextopenen
dc.contributor.authorTassi, F.-
dc.contributor.authorVaselli, O.-
dc.contributor.authorBarboza, V.-
dc.contributor.authorFernandez, E.-
dc.contributor.authorDuarte, E.-
dc.contributor.departmentDipartimento di Scienze della Terra, Università degli Studi di Firenze, Italy-
dc.contributor.departmentDipartimento di Scienze della Terra, Università degli Studi di Firenze, Italy-
dc.contributor.departmentVolcanological and Seismological Observatory, Universidad Nacional, Heredia, Costa Rica-
dc.contributor.departmentVolcanological and Seismological Observatory, Universidad Nacional, Heredia, Costa Rica-
dc.contributor.departmentVolcanological and Seismological Observatory, Universidad Nacional, Heredia, Costa Rica-
item.grantfulltextopen-
item.fulltextWith Fulltext-
crisitem.classification.parent05. General-
crisitem.author.deptEarth Science Dept., University of Florence, Via La Pira 4, Florence, 50121, Italy; (3) CNR - IGG, Via La Pira 4, Florence, 50121, Italy-
crisitem.author.deptVolcanological and Seismological Observatory, Universidad Nacional, Heredia, Costa Rica-
crisitem.author.deptVolcanological and Seismological Observatory, Universidad Nacional, Heredia, Costa Rica-
crisitem.author.deptVolcanological and Seismological Observatory, Universidad Nacional, Heredia, Costa Rica-
Appears in Collections:Annals of Geophysics
Files in This Item:
File Description SizeFormat 
15Tassi.pdf900.09 kBAdobe PDFView/Open
Show simple item record

Page view(s) 50

107
Last Week
0
Last month
0
checked on May 27, 2019

Download(s) 50

126
checked on May 27, 2019

Google ScholarTM

Check