Options
Di Luzio, Emiliano
Loading...
6 results
Now showing 1 - 6 of 6
- PublicationOpen AccessMacroseismic effects highlight site response in Rome and its geological signature(2012)
; ; ; ; ; ; ; ; ;Sbarra, P.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia ;De Rubeis, V.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia ;Di Luzio, E.; Istituto per le Tecnologie Applicate ai Beni Culturali (ITABC) ;Mancini, M.; Istituto di Geologia Ambientale e Geoingegneria (IGAG) ;Moscatelli, M.; Istituto di Geologia Ambientale e Geoingegneria (IGAG). ;Stigliano, F.; Istituto di Geologia Ambientale e Geoingegneria (IGAG). ;Tosi, P.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia ;Vallone, R; Istituto di Geologia Ambientale e Geoingegneria (IGAG).; ; ; ; ; ; ; A detailed analysis of the earthquake effects on the urban area of Rome has been conducted for the L’Aquila sequence, which occurred in April 2009, by using an on-line macroseismic questionnaire. Intensity residuals calculated using the mainshock and four aftershocks are analyzed in the light of a very accurate and original geological reconstruction of the subsoil of Rome based on a large amount of wells. The aim of this work is to highlight ground motion amplification areas and to find a correlation with the geological settings at a sub-regional scale, putting in evidence the extreme complexity of the phenomenon and the difficulty of making a simplified model. Correlations between amplification areas and both near-surface and deep geology were found. Moreover, the detailed scale of investigation has permitted us to find a correlation between seismic amplification in recent alluvial settings and subsiding zones, and between heard seismic sound and Tiber alluvial sediments.372 386 - PublicationOpen AccessEstimates of crustal thickness in central Italy from teleseismic receiver functions(2009-11)
; ; ;Mele, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia ;Di Luzio, E.; CNR-IGAG; We have estimated Moho depths at 39 broadband, 3-component seismic stations installed in central Italy in an area of about 250 x 330 km2, using receiver functions computed from teleseismic events. Stations belong to the Italian Seismic Network that is operated by the Istituto Nazionale di Geofisica e Vulcanologia. In the study area we have found that Moho depth ranges from 24 to 44 km. The shallowest Moho is found along the western side of central Italy and is consistent with the thinned Tyrrhenian crustal domain. Larger crustal thickness characterizes the area of the Apennine mountain range, a Tertiary thrust-and-fold belt running from NW to SE along the whole length of the Italian peninsula. Crustal thickness of 30-32 km are estimated along the eastern margin of central Italy, where the Adriatic continental lithosphere represents the foreland of the E-verging Apennine chain. In this work we have reconstructed the Moho surface beneath central Italy after assigning each station to the different crustal domains (Tyrrhenian vs Adriatic/Apennine) on the basis of location, surface geology, available deep-well data.178 106 - PublicationOpen AccessMapping Moho depth variations in central Italy from PsMoho-P delay times: Evidence of an E-W transition in the Adriatic Moho at 42°N latitude(2013)
; ; ; ;Mele, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia ;Di Luzio, E.; CNR ;Di Salvo, C.; CNR; ; Along the Italian peninsula adjoin two crustal domains, peri-Tyrrhenian and Adriatic, whose boundary is not univocal in central Italy. In this area, we attempt to map the extent of the Moho in the two terrains from variations of the travel time difference between the direct P wave and the P-to-S wave converted at the crust-mantle boundary, called PsMoho. We use teleseismic receiver functions computed at 38 broad-band stations in this and previous studies, and assigned each of the recording sites to the Adriatic or peri-Tyrrhenian terrains based on station location, geologic and geophysical data and interpretation, and consistency of delays with the regional Moho trend. The results of the present study show that the PsMoho arrival time varies from 2.3 to 4.1 s in the peri-Tyrrhenian domain and from 3.7 to 5.5 s in the Adriatic domain. As expected, the lowest time difference is observed along the Tyrrhenian coastline and the largest values are observed in the axial zone of the Apennine chain. A key new result of this study is a sharp E-W boundary in the Adriatic domain that separates a deeper Moho north of about 42 N latitude from a shallower Moho to the south. This feature is constrained for a length of about 40 km by the observations available in this study. The E-W boundary requires a revision of prior mapping of the Moho in central Italy and supports previous hypotheses of lithosphere segmentation.284 205 - PublicationRestrictedChemical‐petrographic and isotopic characterization of the volcanic pavement along the ancient Appia route at the Aurunci Mountain Pass, Italy: Insights on possible provenance(2019)
; ; ; ; ; ; ; ; ; The ancient Appia route was built across central‐southern Italy between the fourth and second century before the common era (B.C.E.). At the Aurunci Mountain Pass, the route crosses carbonate ridges that provided the raw material used to pave the road in the first century C.E. This material was replaced with lava blocks of unknown origin in the third century C.E. The study area is at least 50 km from the main volcanic centers along the peri‐ Tyrrhenian side of Italy, such as the Colli Albani, Roccamonfina, and Middle Latin Valley volcanoes. The main objective of this research was the chemical–petrographic and isotopic characterization of rock samples from the Appia flagstones to unravel their possible provenance. The analytical procedure included scanning electron microscope and electron microprobe analyses and 87Sr/86Sr–143Nd/144Nd isotopic measurements. Samples taken from unknown quarries found in the Middle Latin Valley volcanic field underwent the same analyses. After comparing the analysis results with data from the literature, the most likely source area was identified with the Roccamonfina precaldera ultrapotassic sequence. The availability and use of volcanic resources for the construction and maintenance of the ancient Appia route in the investigated territories are only outlined in this work and deserve further study.388 2 - PublicationOpen AccessFirst results from the CROP-11 deep seismic profile, central Apennines, Italy: evidence of mid-crustal folding(2006)
; ; ; ; ; ; ; ; ; ; ; ; ; ;Billi, A.; Dipartimento di Scienze Geologiche, Universita` 'Roma Tre', Rome, Italy ;Tiberti, M. M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia ;Cavinato, G. P.; Istituto di Geologia Ambientale e Geoingegneria, CNR, Rome, Italy ;Cosentino, D.; Dipartimento di Scienze Geologiche, Universita` 'Roma Tre', Rome, Italy ;Di Luzio, E.; Istituto di Geologia Ambientale e Geoingegneria, CNR, Rome, Italy ;Keller, J. V. A.; ChevronTexaco Energy Technology Co., San Ramon, CA, USA ;Kluth, C.; Department of Geology and Geological Engineering, Colorado School of Mines, Golden, USA ;Orlando, L.; Dipartimento di Idraulica, Trasporti e Strade, Universita` ‘La Sapienza’, Rome, Italy ;Parotto, M.; Dipartimento di Scienze Geologiche, Universita` 'Roma Tre', Rome, Italy ;Praturlon, A.; Dipartimento di Scienze Geologiche, Universita` 'Roma Tre', Rome, Italy ;Romanelli, M.; Istituto Nazionale di Oceanografia e di Geofisica Sperimentale, Trieste, Italy ;Storti, F.; Dipartimento di Scienze Geologiche, Universita` 'Roma Tre', Rome, Italy ;Wardell, N.; Istituto Nazionale di Oceanografia e di Geofisica Sperimentale, Trieste, Italy; ; ; ; ; ; ; ; ; ; ; ; The CROP-11 deep seismic profile across the central Apennines, Italy, reveals a previously unknown, mid-crustal antiform here interpreted as a fault-bend fold-like structure. The seismic facies and gravity signature suggest that this structure consists of low-grade metamorphic rocks. Geomorphological, stratigraphic and tectonic evidence in the overlying shallow thrusts suggests that this structure developed in early to mid-Messinian time and grew out of sequence in late Messinian– Pliocene time. The out-of-sequence growth may reflect a taper subcriticality stage of the Apenninic thrust wedge, which induced renewed contraction in the rear.296 869 - PublicationRestrictedMoho deepening and shallow upper crustal delamination beneath the central Apennines(2009)
; ; ; ; ; ;Di Luzio, E.; CNR-IGAG ;Mele, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia ;Tiberti, M. M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia ;Cavinato, G. P.; CNR-IGAG ;Parotto, M.; Università degli Studi Roma Tre; ; ; ; Geologic interpretation of seismic data along the eastern half of the CROP 11 deep seismic reflection profile, running across the central Apennines, indicates that the Adriatic Moho deepens gradually from 34 km in the foreland areas to 47 km beneath the core of the belt. This deepening is in agreement with local Moho depths estimated from teleseismic receiver functions at several stations installed along the CROP 11 profile. On the contrary, DSS (Deep Seismic Soundings) data image the Moho at shallower depths. The deepening of the Adriatic Moho illustrated in this paper supports the westward downgoing of a portion of Adriatic continental crust and is consistent with the regional gravity anomalies, provided that very high-density rocks are present above the Moho at the core of the central Apennine belt. We discuss geophysical and geologic data in the framework of alternative models of delamination of the Adriatic crust at different depth.457 555