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Scandone, Paolo
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- PublicationRestrictedInferences on upper crustal structure of the Southern Apennines (Italy) from seismic refraction investigations and subsurface data(2000)
; ; ; ; ; ;Improta, L.; Dipartimento di Scienze Fisiche, Università di Napoli, Napoli, Italy ;Iannaccone, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia ;Capuano, P.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia ;Zollo, A.; Dipartimento di Scienze Fisiche, Università di Napoli, Napoli, Italy ;Scandone, P.; Dipartimento di Scienze della Terra, Università di Pisa, Pisa, Italy; ; ; ; This paper presents an interpretation of crustal seismic refraction data from the northern sector of the Southern Apennines thrust belt, a region that in historical times experienced large destructive earthquakes. The data were acquired in 1992 along a seismic line 75 km long and parallel to the Apenninic chain, in order to determine a detailed 2-D P-wave velocity model of the upper crust in an area that had not been deeply investigated by geophysical methods previously. We have used a 2-D ray tracing technique based on asymptotic ray theory to model travel times of first and reflected P-wave arrivals. Synthetic seismograms have been produced by finite difference simulations in order to check the reliability of the velocity model inferred by ray-tracing modelling. The interpretation of the velocity model is constrained by stratigraphic and sonic velocity logs from wells for oil exploration located close to the seismic line. Gravity data modelling allows to check the velocity model and to extend the structural interpretation in 3-D. In the shallow crust, up to a depth of 3–4 km, strong lateral variations of the modelled velocities are produced by the overlapping of thrust sheets formed by: (1) Cenozoic flyschoid cover and basinal successions that underlie the seismic profile with P-wave velocities in the 2.8–4.1 km/s range and thicknesses varying between 0.5 and 4.5 km; (2) Mesozoic basinal sequences with a velocity of 4.8 km/s and a depth of 1.5–2.1 km in the northern part of the profile; (3) Mesozoic limestones of the Western Carbonate Platform with a velocity of 6.0 km/s and a depth of 0.1–0.8 km in the southern part of the profile. At a greater depth, the model becomes more homogeneous. A continuous seismic interface 3.0–4.5 km deep with a velocity of 6.0 km/s is interpreted as the top of the Meso-Cenozoic Carbonate Multilayer of the Apulia Platform, characterized by an increase in seismic velocity from 6.2 to 6.6 km/s at depths of 6–7 km. A lower P-wave velocity (about 5.0 km/s) is hypothesized at depths ranging between 9.5 and 11 km. As inferred by commercial seismic lines and data from two deep wells located in the Apulia foreland and Bradano foredeep, this low-velocity layer can be related to Permo-Triassic clastic deposits drilled at the bottom of the Apulia Platform. Seismic data do not allow us to identify possible deeper seismic interfaces that could correspond to the top of the Paleozoic crystalline basement; this is probably due to the low-velocity layer at the bottom of the Carbonate Multilayer that reflects and attenuates a great part of the seismic energy. The joint interpretation of seismic refraction and well data, in accordance with gravity data, provides the first detailed P-wave velocity model of the upper crust of the northern sector of the Southern Apennines, which differs considerably from previous 1-D velocity models used to study the seismicity of the region, and reveals new information about the structure of the thrust belt181 22 - PublicationOpen AccessQuaternary kinematic evolution of the Southern Appennines. relationships between surface geological features and deep lithospheric structures(1993)
; ; ; ; ;Cinque, A.; Dipartimento di Scienze della Terra, Napoli, Italy ;Patacca, E.; Dipartimento di Scienze della Terra, Pisa, Italy ;Scandone, P.; Dipartimento di Scienze della Terra, Pisa, Italy ;Tozzi, M.; CNR, Centro di Studio per la Geologia Tecnica, Roma, Italy; ; ; 114 651 - PublicationOpen AccessSeismic hazard assessment for Adria(1999-12)
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;Slejko, D.; Osservatorio Geofisico Sperimentale, Trieste, Italy ;Camassi, R.; Gruppo Nazionale Difesa Terremoti c/o Università di Bologna, Italy ;Cecic, I.; Geophysical Survey of Slovenia, Ljubljana, Slovenia ;Herak, D.; Geophysical Institute, University, Zagreb, Croatia ;Herak, M.; Geophysical Institute, University, Zagreb, Croatia ;Kociu, S.; Seismological Institute, Tirana, Albania ;Kouskouna, V.; Department of Geophysics, University, Athens, Greece ;Lapajne, J.; Geophysical Survey of Slovenia, Ljubljana, Slovenia ;Makropoulos, K.; Department of Geophysics, University, Athens, Greece ;Meletti, C.; Gruppo Nazionale Difesa Terremoti c/o Università di Pisa, Italy ;Muco, B.; Seismological Institute, Tirana, Albania ;Papaioannou, C.; Institute of Engineering Seismology and Earthquake Engineering, Thessaloniki, Greece ;Peruzza, L.; Gruppo Nazionale Difesa Terremoti c/o Osservatorio Geofisico Sperimentale, Trieste, Italy ;Rebez, R.; Osservatorio Geofisico Sperimentale, Trieste, Italy ;Scandone, P.; Dipartimento di Scienze della Terra, Università di Pisa, Italy ;Sulstarova, E.; Seismological Institute, Tirana, Albania ;Voulgaris, N.; Department of Geophysics, University, Athens, Greece ;Zivcic, M.; Geophysical Survey of Slovenia, Ljubljana, Slovenia ;Zupancic, P.; Geophysical Survey of Slovenia, Ljubljana, Slovenia; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; The Adriatic region was chosen as one of the test areas in the GSHAP program and, consequently, its seismic hazard was computed. The standard hazard map chosen by GSHAP represents PGA with a 475-year return period. Some other parameters, as the spectral acceleration and the uniform hazard response spectra for the main Adriatic towns, have been computed for a better representation of the regional hazard. The most hazardous area remains identified in the Cephalonia zone, where strong earthquakes frequently occur. The Southern Apennines are characterised by a slightly lower hazard, while the Adriatic Sea itself, the Poplain and the Apulian peninsula are almost aseismic.344 717 - PublicationRestrictedThe ARGO Project: assessing NA-TECH risks on offshore oil platforms(2017)
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;Analysis of natural and anthRopoGenic risks on Offshore platforms (ARGO) is a 3-years project, funded by the Italian Ministry of Economic Development. The project, coordinated by AMRA, a permanent Research Centre for the development of innovative technologies applied to environmental problems, aims at providing technical-support for the analysis of natural and anthropogenic risks on offshore oil-platforms. ARGO has developed methodologies for the probabilistic analysis of industrial accidents triggered by natural events (NA-TECH) on offshore platforms. The final analysis of the ARGO Project suggest a constant monitoring of exploitation activity, fluids re-injection and storage using high technology networks.192 2