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Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/3519
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dc.contributor.authorallBasili, R.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italiaen
dc.contributor.authorallMeghraoui, M.; EOST, Institute de Physique du Globe, Strasbourg Cedex, France.en
dc.date.accessioned2007-12-31T07:33:46Zen
dc.date.available2007-12-31T07:33:46Zen
dc.date.issued2001-02en
dc.identifier.urihttp://hdl.handle.net/2122/3519en
dc.description.abstractWe study the coseismic and postseismic displacements related with the 1997 Umbria-Marche earthquake sequence by means of leveling lines along a deformed aqueduct located in the epicentral area. Comparing the 1960 and 10/1997 measurements we obtain 0.49 0.10 m of coseismic displacement distributed along 3 km across the normal fault zone. Modeling of the coseismic surface dislocation is obtained from a combination of low angle (38°) faults at depth and high angle (80°) upper fault branches. The best fit model indicates that the upper branches stop at 0.4 km below the ground surface and have 60% of slip with respect to the lower faults. The postseismic displacement measured during 1998 is 0.18 m and represents 36% of the apparent coseismic deformation. Moderate earthquakes in the Apennines and related surface deformation may thus result from curved faults that reflect the brittle-elastic properties of the uppermost crustal structures.en
dc.description.sponsorshipData collection was made while both authors were at Istituto di Ricerca per la Tettonica Recente – CNR (GNDT Project), Roma, Italy. M. Copparoni (ASM, Foligno) and M. Raponi and S. Pacico (Studio Topografico s.n.c., Foligno) provided data about aqueduct and leveling lines. Analysis of data and modeling were done while RB was visiting EOST-IPG, Strasbourg, France. Preparation of the paper benefited from discussion with R. Armijo, S. Barba, P. Gomez and G. Valensise. A. Amato and an anonymous reviewer are thanked for their constructive remarks.en
dc.language.isoEnglishen
dc.publisher.nameAmerican Geophysical Unionen
dc.relation.ispartofGeophysical Research Lettersen
dc.relation.ispartofseries14/28 (2001)en
dc.subjectCoseismic displacementen
dc.subjectpostseismic displacementen
dc.subjectearthquake faulten
dc.subjectColfiorito, Italyen
dc.titleCoseismic and postseismic displacements related with the 1997 earthquake sequence in Umbria-Marche (central Italy)en
dc.typearticleen
dc.description.statusPublisheden
dc.type.QualityControlPeer-revieweden
dc.description.pagenumber2695–2698en
dc.identifier.URLhttp://www.agu.org/pubs/crossref/2001/2000GL012102.shtmlen
dc.subject.INGV04. Solid Earth::04.03. Geodesy::04.03.01. Crustal deformationsen
dc.subject.INGV04. Solid Earth::04.04. Geology::04.04.01. Earthquake geology and paleoseismologyen
dc.subject.INGV04. Solid Earth::04.04. Geology::04.04.09. Structural geologyen
dc.subject.INGV04. Solid Earth::04.06. Seismology::04.06.01. Earthquake faults: properties and evolutionen
dc.subject.INGV04. Solid Earth::04.06. Seismology::04.06.06. Surveys, measurements, and monitoringen
dc.subject.INGV04. Solid Earth::04.07. Tectonophysics::04.07.07. Tectonicsen
dc.identifier.doi10.1029/2000GL012102en
dc.relation.referencesAmato, A., and 18 others (1998) The 1997 Umbria-Marche, Italy, earthquake sequence: a first look at main shocks and aftershocks. Geophys. Res. Lett., 25, 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., V. Bosi, F. Galadini, P. Galli, M. Meghraoui, P. Messina, M. Moro and A. Sposato (1998) The Colfiorito earthquake sequence of September-October 1997: Surface breaks and seismotectonic implications for the central Apennines (Italy). J. Earthquake Engrg., 2, 291-302. Bray, J. D., R. B. Seed and H. B. Seed (1994) Analysis of earthquake fault rupture propagation through soil. J. Geotech. Engrg., 120, 562-580. 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, 1953-1956. Ekström, G., A. Morelli, A. M. Dziewonski and E. Boschi (1998) Moment tensor analysys of the Umbria-Marche earthquake sequence of September-October 1997. Geophys. Res. Lett., 25, 1971-1974. Feigl, K. L., and E. Dupré (1999) RNGCHN: a program to calculate displacement components from dislocations in an elastic half-space with applications for modeling geodetic measurements of crustal deformation. Computer & Geosciences, 25, 695-704. Hunstad, I., M. Anzidei, M. Cocco, P. Baldi, A. Galvani and A. Pesci (1999) Modelling coseismic displacements during the 1997 Umbria-Marche earthquake (central Italy). Geophys. J. Int., 139, 283-295. Liu, H. P., R. L. Hagman and R. F. Scott (1978) Centrifuge modeling of earthquakes. Geophys. Res. Lett., 5, 333-336. Meghraoui, M., V. Bosi and T. Camelbeeck (1999) Fault fragment control in the 1997 Umbria-Marche, central Italy, earthquake sequence. Geophys. Res. Lett., 26, 1069-1072. Mooney, W., G. Laske and T. G. Masters (1998) CRUST 5.1: A global crustal model at 5°x5°. J. Geophys. Res., 103 B1, 727-747. Okada, Y. (1985) Surface deformation due to shear and tensile faults in a half-space. Bull. Seism. Soc. Am., 75, 1135-1154. Salvi, S., and 13 others (2000) Modeling coseismic displacements resulting from SAR interferometry and GPS measurements during the 1997 Umbria-Marche seismic sequence. Journ. of. Seismology, special volume, 4, 479-499. Stein, R. S., and M. Lisowsky (1983) The 1979 Homestead Valley earthquake sequence, California: control of aftershocks and postseismic deformation. J. Geophys. Res., 88 B8, 6477-6490. Stramondo, S., and 12 others (1999) The September 26, 1997 Colfiorito, Italy, earthquakes: modeled coseismic surface displacement from SAR interferometry and GPS. Geophys. Res. Lett., 26, 883-886. Withjack, M. O., J. Olson and E. Peterson (1990) Experimental models of extensional forced folds. AAPG Bull., 74, 1038-1054. Zollo, A., S. Marcucci, G. Milana and P. Capuano (1999) The 1997 Umbria-Marche (Central Italy) earthquake sequence: Insights on the mainshock ruptures from near source strong motion records. Geophys. Res. Lett., 26, 3165-3168.en
dc.description.journalTypeJCR Journalen
dc.description.fulltextopenen
dc.contributor.authorBasili, R.en
dc.contributor.authorMeghraoui, M.en
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italiaen
dc.contributor.departmentEOST, Institute de Physique du Globe, Strasbourg Cedex, France.en
item.openairetypearticle-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.grantfulltextopen-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia-
crisitem.author.deptEOST, Institute de Physique du Globe, Strasbourg Cedex, France.-
crisitem.author.orcid0000-0002-1213-0828-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.classification.parent04. Solid Earth-
crisitem.classification.parent04. Solid Earth-
crisitem.classification.parent04. Solid Earth-
crisitem.classification.parent04. Solid Earth-
crisitem.classification.parent04. Solid Earth-
crisitem.classification.parent04. Solid Earth-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
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