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Papers by eliana esposito
Bulletin of the Seismological Society of America, Aug 1, 2011
This paper documents evidence of surface faulting associated with the 6 April 2009 moderate-sized... more This paper documents evidence of surface faulting associated with the 6 April 2009 moderate-sized earthquake (ML 5.8, M w 6.3) in the central Apennines of Italy, which caused major damage to the town of L'Aquila and its surroundings. Coseismic surface ruptures were mapped for a minimum distance of 2.6 km along the Paganica fault, a fault still poorly investigated relative to the other active faults nearby, which bound much wider range fronts. Surface rupture length (SRL) and maximum displacement parameters (2.6 km minimum ...
Questo studio analizza i fenomeni di degradazione connessi ad un violento incendio boschivo che, ... more Questo studio analizza i fenomeni di degradazione connessi ad un violento incendio boschivo che, il 4 agosto 2012, ha interessato un'area del versante meridionale dei Monti di Sarno. La descrizione degli stessi è stata possibile grazie ad un rilevamento di campagna realizzato subito dopo l'evento, che ha consentito di individuare le alterazioni delle rocce carbonatiche affioranti e dei suoli di copertura, costituiti in prevalenza da depositi vulcanoclastici pedogenizzati. Nel complesso, l'incendio ha incrementato la suscettibilità del versante nei confronti dei fenomeni erosivi di tipo idraulico connessi alle prime piogge autunnali, in quanto le alte temperature hanno ridotto la resistenza meccanica delle rocce ed hanno favorito la migrazione dei composti umici idrorepellenti all'interno del suolo. Tale situazione è stata notevolmente amplificata dalla mancata azione protettiva della copertura vegetale, che è stata quasi completamente distrutta dalle fiamme.
Front Cover: Rome and Naples, located in different geomorphological settings, share a multimillen... more Front Cover: Rome and Naples, located in different geomorphological settings, share a multimillenary history marked by numerous natural catastrophes GEOLOGICAL SETTING, HAZARDS AND URBAN GROWTH IN SOME HISTORICAL TOWNS IN ITALY P64 3 -P64
subaerial volume of about 5·106 m3. This landslide produced a tsunami wave responsible for more t... more subaerial volume of about 5·106 m3. This landslide produced a tsunami wave responsible for more than 1500 human life losses near Marina Grande beach. A geomechanical characterization of both the intact rock and the rock mass outcropping in the landslide slope was performed in order to obtain an engineering-geology model of the landslide according to an equivalent-continuum approach. Dynamic numerical modelling by FDM code FLAC 6.0 was performed to back-analyse the landslide occurrence during the 1783 seismic sequence. At this aim reference synthetic accelerometric ground motions were derived from strong motion records, taking into account both source and energy features of the 5th an 6th February mainshocks and local expected response spectra. In order to force the numerical model, levelled-energy multifrequencial equivalent signals were obtained from these reference records by experiencing the new LEMA_DES approach. The results of modelling show a post-seismic trigger of the rock-a...
The debate originated within the Workshop of the Subcommission on Paleoseismicity held during the... more The debate originated within the Workshop of the Subcommission on Paleoseismicity held during the XV INQUA Congress in Durban, August 1999, emphasized the importance of developing a multi-proxy empirical database on earthquake ground effects that can be used by, and incorporated into, seismichazard assessment practices. The Subcommission selected this task as the primary goal for the past inter-congress period. An interdisciplinary Working Group (WG) was established, including geologists, seismologists and engineers, in order to formalize the collected data into a new scale of macroseismic intensity based only on ground effects: the proposed INQUA scale. This paper illustrates the results of the research conducted by the WG, introduces the proposed INQUA scale, and discusses major issues related to this innovative approach to the intensity assessment. The INQUA scale first draft is due to Leonello Serva, based on the compilation and comparison of the three most commonly used intensity scales, i.e., the Mercalli-Cancani-Sieberg MCS), Medvedev-Sponhouer-Karnik (MSK) and Mercalli Modified (MM). Eutizio Vittori, Eliana Esposito, Sabina Porfido and Alessandro M. Michetti produced a revised version, after (a) integration with the revised MM scale of Dengler and McPherson (1993) and (b) checking the scale against the description of coseismic ground effects and intensity assessments for several tens of historical and instrumental earthquakes in the world. This version of the INQUA scale, presented during the XVI INQUA Congress in Reno, July 23-30, 2003, is a joint contribution of the WG including new data, editing, comments and scientific discussion from Bagher . At this stage, the newly revised MM scale for New Zealand (Hancox, Perrin and Dellow, 2002), kindly provided by Graeme Hancox, has been also taken into account.
Referenti: Eliana Esposito, Ricercatore (Monitoraggio faglie attive) Sabina Porfido, Ricercatore ... more Referenti: Eliana Esposito, Ricercatore (Monitoraggio faglie attive) Sabina Porfido, Ricercatore (Valutazione effetti sismoindotti mediante l' ESI scale 2007) Crescenzo Violante, Tecnologo (Rilievi di dettaglio-batimetria Lago Sinizzo) SINTESI DELL'ATTIVITÀ SVOLTA : STUDIO DEGLI EFFETTI SISMOINDOTTI L'unità operativa dell' IAMC ha effettuato il rilevamento degli effetti geologici sismoindotti per la valutazione dell'Intensità della sequenza sismica aquilana. L'attribuzione del grado di intensità è stato effettuato mediante l'uso della nuova scala macrosismica "ESI scale 2007" (Michetti et al., 2007), basata esclusivamente sugli effetti indotti sull'ambiente fisico dal terremoto, siano essi di natura primaria, come le faglie, e/o di natura secondaria, come i fenomeni franosi, di fratturazione, di liquefazioni, nonché variazioni idrologiche. In particolare l' IAMC e l' IRPI, in collaborazione con altri enti di ricerca nazionali ed inte...
Bulletin of the Seismological Society of America, Aug 1, 2011
This paper documents evidence of surface faulting associated with the 6 April 2009 moderate-sized... more This paper documents evidence of surface faulting associated with the 6 April 2009 moderate-sized earthquake (ML 5.8, M w 6.3) in the central Apennines of Italy, which caused major damage to the town of L'Aquila and its surroundings. Coseismic surface ruptures were mapped for a minimum distance of 2.6 km along the Paganica fault, a fault still poorly investigated relative to the other active faults nearby, which bound much wider range fronts. Surface rupture length (SRL) and maximum displacement parameters (2.6 km minimum ...
Questo studio analizza i fenomeni di degradazione connessi ad un violento incendio boschivo che, ... more Questo studio analizza i fenomeni di degradazione connessi ad un violento incendio boschivo che, il 4 agosto 2012, ha interessato un'area del versante meridionale dei Monti di Sarno. La descrizione degli stessi è stata possibile grazie ad un rilevamento di campagna realizzato subito dopo l'evento, che ha consentito di individuare le alterazioni delle rocce carbonatiche affioranti e dei suoli di copertura, costituiti in prevalenza da depositi vulcanoclastici pedogenizzati. Nel complesso, l'incendio ha incrementato la suscettibilità del versante nei confronti dei fenomeni erosivi di tipo idraulico connessi alle prime piogge autunnali, in quanto le alte temperature hanno ridotto la resistenza meccanica delle rocce ed hanno favorito la migrazione dei composti umici idrorepellenti all'interno del suolo. Tale situazione è stata notevolmente amplificata dalla mancata azione protettiva della copertura vegetale, che è stata quasi completamente distrutta dalle fiamme.
Front Cover: Rome and Naples, located in different geomorphological settings, share a multimillen... more Front Cover: Rome and Naples, located in different geomorphological settings, share a multimillenary history marked by numerous natural catastrophes GEOLOGICAL SETTING, HAZARDS AND URBAN GROWTH IN SOME HISTORICAL TOWNS IN ITALY P64 3 -P64
subaerial volume of about 5·106 m3. This landslide produced a tsunami wave responsible for more t... more subaerial volume of about 5·106 m3. This landslide produced a tsunami wave responsible for more than 1500 human life losses near Marina Grande beach. A geomechanical characterization of both the intact rock and the rock mass outcropping in the landslide slope was performed in order to obtain an engineering-geology model of the landslide according to an equivalent-continuum approach. Dynamic numerical modelling by FDM code FLAC 6.0 was performed to back-analyse the landslide occurrence during the 1783 seismic sequence. At this aim reference synthetic accelerometric ground motions were derived from strong motion records, taking into account both source and energy features of the 5th an 6th February mainshocks and local expected response spectra. In order to force the numerical model, levelled-energy multifrequencial equivalent signals were obtained from these reference records by experiencing the new LEMA_DES approach. The results of modelling show a post-seismic trigger of the rock-a...
The debate originated within the Workshop of the Subcommission on Paleoseismicity held during the... more The debate originated within the Workshop of the Subcommission on Paleoseismicity held during the XV INQUA Congress in Durban, August 1999, emphasized the importance of developing a multi-proxy empirical database on earthquake ground effects that can be used by, and incorporated into, seismichazard assessment practices. The Subcommission selected this task as the primary goal for the past inter-congress period. An interdisciplinary Working Group (WG) was established, including geologists, seismologists and engineers, in order to formalize the collected data into a new scale of macroseismic intensity based only on ground effects: the proposed INQUA scale. This paper illustrates the results of the research conducted by the WG, introduces the proposed INQUA scale, and discusses major issues related to this innovative approach to the intensity assessment. The INQUA scale first draft is due to Leonello Serva, based on the compilation and comparison of the three most commonly used intensity scales, i.e., the Mercalli-Cancani-Sieberg MCS), Medvedev-Sponhouer-Karnik (MSK) and Mercalli Modified (MM). Eutizio Vittori, Eliana Esposito, Sabina Porfido and Alessandro M. Michetti produced a revised version, after (a) integration with the revised MM scale of Dengler and McPherson (1993) and (b) checking the scale against the description of coseismic ground effects and intensity assessments for several tens of historical and instrumental earthquakes in the world. This version of the INQUA scale, presented during the XVI INQUA Congress in Reno, July 23-30, 2003, is a joint contribution of the WG including new data, editing, comments and scientific discussion from Bagher . At this stage, the newly revised MM scale for New Zealand (Hancox, Perrin and Dellow, 2002), kindly provided by Graeme Hancox, has been also taken into account.
Referenti: Eliana Esposito, Ricercatore (Monitoraggio faglie attive) Sabina Porfido, Ricercatore ... more Referenti: Eliana Esposito, Ricercatore (Monitoraggio faglie attive) Sabina Porfido, Ricercatore (Valutazione effetti sismoindotti mediante l' ESI scale 2007) Crescenzo Violante, Tecnologo (Rilievi di dettaglio-batimetria Lago Sinizzo) SINTESI DELL'ATTIVITÀ SVOLTA : STUDIO DEGLI EFFETTI SISMOINDOTTI L'unità operativa dell' IAMC ha effettuato il rilevamento degli effetti geologici sismoindotti per la valutazione dell'Intensità della sequenza sismica aquilana. L'attribuzione del grado di intensità è stato effettuato mediante l'uso della nuova scala macrosismica "ESI scale 2007" (Michetti et al., 2007), basata esclusivamente sugli effetti indotti sull'ambiente fisico dal terremoto, siano essi di natura primaria, come le faglie, e/o di natura secondaria, come i fenomeni franosi, di fratturazione, di liquefazioni, nonché variazioni idrologiche. In particolare l' IAMC e l' IRPI, in collaborazione con altri enti di ricerca nazionali ed inte...