Luciana Orlando - Academia.edu (original) (raw)

Papers by Luciana Orlando

Research paper thumbnail of Pavement testing by integrated geophysical methods: Feasibility, resolution and diagnostic potential

Journal of Applied Geophysics, 2017

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Environmental impact assessment for the re-erection of the Roma Stela in the North Stelae Park of Aksum (Ethiopia)

Protection of Historical Buildings Proceedings of the International Conference on Protection of Historical Buildings Prohitech 09 Rome Italy 21 24 June 2009 Prohitech 09 Vol 1 2009 Isbn 978 0 415 55804 4 Pags 899 904, 2009

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Approaches to increase resolution of radar signal

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Improvement of signal to noise ratio of Ground Penetrating Radar using CMP acquisition and data processing

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Caracteres stratigrafiques et evolution quaternaire du plateau continental de l'ile d'Elba sud oriental

Bookmarks Related papers MentionsView impact

Research paper thumbnail of 2D gravity modelling along the CROP11 seismic profile

The purpose of this work is to present a gravity reconstruction of the deepest portion of the CRO... more The purpose of this work is to present a gravity reconstruction of the deepest portion of the CROP 11 seismic line. The 2D gravity modelling is constrained by DSS data and by deep reflection seismic data obtained along the CROP 11 line. The role of the regional gravity anomaly trend of Central Italy as an independent constraint for the geological interpretation of the seismic line is also highlighted. The main gravity low (Fucino Plain) in the area is compensated by the combined effect of a regional deep-ening of both the Moho and the top of the crystalline basement, while the gravity low, located east towards the Maiella Mt., seems to originate between a 4 and 10 km depth. A lower density can be assigned to the western portion of the mantle with respect to the eastern side. The westernmost part of the upper crust in the model also shows a slightly lower density. The crystalline basement is not likely to be heavily involved in the deformation of the chain; ramp-and-flat deformations...

Bookmarks Related papers MentionsView impact

Research paper thumbnail of HAL-01022030V1

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Characterization of a Pre-Trajan Wall by Integrated Geophysical Methods

Archaeological Prospection, 2015

ABSTRACT The purpose of this study was to characterize a pre-Trajan mosaic-decorated wall structu... more ABSTRACT The purpose of this study was to characterize a pre-Trajan mosaic-decorated wall structure located beneath the Cryptoporticus of the ‘Baths of Trajan’ complex in Rome. The surveyed wall is 15 m long, 0.9 m wide and 3 to 5 m high. Ground penetrating radar (GPR) and P-wave seismic refraction tomography profiles were used to reconstruct the wall's inner structure, generate a map of the fractures and to evaluate the seismic velocities of the building materials. The wall was surveyed with horizontally and vertically dense GPR profiles and two seismic lines. The seismic lines and GPR profiles were capable of detecting a discontinuity between brick and travertine materials that compose the wall. The combined interpretation of the two non-invasive techniques allowed us to locate weak zones and fractures. This rapid, non-destructive and multi-parametric approach has proved to be effective for characterizing the current status of the wall and the results will be used by archaeologists to evaluate the wall's integrity and to preserve the structure in the future archaeological excavations. Copyright © 2015 John Wiley & Sons, Ltd.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Electrical permittivity and resistivity time lapses of multiphase DNAPLs in a lab test

Water Resources Research, 2015

ABSTRACT Dense Non-Aqueous Phase Liquids (DNAPLs) induce variation in electromagnetic characteris... more ABSTRACT Dense Non-Aqueous Phase Liquids (DNAPLs) induce variation in electromagnetic characteristics of the ground e.g. electric permittivity and resistivity. The most used indirect methods in the mapping of these physical characteristics are electrical resistivity and ground penetrating radar. To better understand the effect of DNAPL release on electrical permittivity and resistivity in a water saturated medium, we carried out a controlled laboratory experiment where the host material was simulated by glass beads and the DNAPL by HFE-7100 (hydrofluoroether). The experiment measured the electric resistivity and permittivity of each fluid, the multi-phase fluid system, and the host material, along with time-lapse electrical resistivity and GPR measurements in a controlled cell. We found that the different phases of DNAPL within a saturated medium (free, dissolved and gaseous phase) affect the physical characteristics differently. The reflection pull-up behind contaminated sediments, which is normally detected by GPR, was mainly inferred from the HFE free phase. The dissolved phase causes small variations in electric permittivity not usually readily detected by GPR measurements. Both the dissolved and free HFE phases induce variation in resistivity. This article is protected by copyright. All rights reserved.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Intensity of scattering for the lithotype characterization of an excavated pre-Trajan wall structure

Proceedings of the 15th International Conference on Ground Penetrating Radar, 2014

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Using polarimetric GPR antenna to characterize hidden cylinders

ABSTRACT The recent appearing of multi-component GPR antennas in the research and market fields i... more ABSTRACT The recent appearing of multi-component GPR antennas in the research and market fields is attracting interest towards the possibility to exploit polarization diversity in order to gain more information on the probed scenario. In this framework, based on a forward model, we investigate the potential of discerning the electromagnetic nature of cylindrical targets staring from B-scan measurements. The study is carried out via a FDTD numerical analysis and is supported by analytical results referred to the 2D case. The preliminary obtained results suggest that is actually possible to discriminate conducting and dielectric circular cylinders from multi-component GPR B-scans. Experimental results are also provided.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Location of sub-surface geoelectric anomalies for archaeological work — A reply

Geoexploration, 1989

... Réponse. Auteur(s) / Author(s). ORLANDO L. (1) ; PIRO S. ; VERSINO L. ; Affiliation(s) du ou ... more ... Réponse. Auteur(s) / Author(s). ORLANDO L. (1) ; PIRO S. ; VERSINO L. ; Affiliation(s) du ou des auteurs / Author(s) Affiliation(s). (1) Univ. ... Anglais Editeur / Publisher. Elsevier, Amsterdam,PAYS-BAS (1963-1991) (Revue) Mots-clés anglais / English Keywords. Archaeological sites ...

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Mantle-derived CO2 migration along active faults within an extensional basin margin (Fiumicino, Rome, Italy)

Tectonophysics

ABSTRACT Fluid migration along faults can be highly complex and spatially variable, with the pote... more ABSTRACT Fluid migration along faults can be highly complex and spatially variable, with the potential for channeled flow, accumulation in capped porous units, fault cross-flow, lateral migration along strike, or complete sealing. Extensional basin margins can be important for such migration, given the associated crustal thinning and decompression that takes place combined with potential geothermal or mantle gas sources. One such example is near the urban area of Rome, situated along the active extensional continental margin of the Tyrrhenian back arc basin and surrounded by Middle-Upper Pleistocene K-rich and arc-related volcanoes. Recent research activities in the area around Fiumicino, a town 25 km to the west of Rome, has highlighted the close spatial link between degassing CO2 and the faults that provide the necessary vertical migration pathways. In particular, detailed soil gas and gas flux surveys have highlighted the release at surface of large volumes of asthenospheric mantle CO2 in correspondence with normal faults observed in a new seismic reflection profile acquired along the Tiber River. Detailed reconstruction of the Pleistocene–Holocene stratigraphy of the area dates fault activity from 20,000 to 9000 years BP. It is proposed that the gas migrates preferentially along the cataclastic tectonic breccias of the faults until it encounters recent, unconsolidated sediments; porous units within this shallow stratigraphy act as temporary secondary traps for the leaking gas, with local gas release at the ground surface occurring where the sealing of the overlying aquitards has been compromised. Degassing and active faults confirm the extensional tectonics affecting the area and the geodynamic scenario of a mantle wedge beneath the western Apennines, associated with ongoing W-directed subduction. Moreover, degassing highlights the potential geochemical and seismic risks for the highly populated urban areas near Rome.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Lab-scale Tests in the Detection of a Multi-phase DNAPL

Near Surface Geoscience 2013, 2013

ABSTRACT In order to improve the understanding of the sensitivity of geophysical investigation to... more ABSTRACT In order to improve the understanding of the sensitivity of geophysical investigation to different phases of contaminant, GPR, electric resistivity and TDR measurements performed to detect and monitor DNAPLs spilled in a saturated media are analyzed. The experiment was performed in a Plexiglas cell filled with saturated grain glasses, simulating a permeable sand media, and hydrofluoroether (HFE-7100) simulating the contaminant. The results showed that GPR is more sensitive to the separate phase of contaminant because the dissolved phase does not significantly influence the electric permittivity. These results were confirmed by TDR measurement. On the contrary the electric resistive measurements resulted sensitive to all phases of contaminant (gaseous, separate and dissolved). The water flow and the variation of the water table contribute to the dissolution and migration of the DNAPL, even if the lab experiment showed that it cannot be easily removed within a saturated medium because its separate phase remains trapped within the pores and, very slowly, it moves downwards, also in the presence of a water flow.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Forecasting the next major thrust into space

Space Policy, 1996

Patterns in societal energy use enable forecasts of the times of future events associated with im... more Patterns in societal energy use enable forecasts of the times of future events associated with important human exploration and technology programs. Discovered in 1989, the 56 year energy cycle has previously been linked with many technological, economic, and social ...

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Time-lapse monitoring of DNAPL in a controlled cell

Near Surface Geophysics, 2013

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Lowstand terraces on Tyrrhenian Sea steep continental slopes

Marine Geology, 1996

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Test of a new surface geochemistry tool for resource prediction in frontier areas

Marine and Petroleum Geology, 1996

ABSTRACT Data from a regional surface geochemistry survey in the North Viking Graben have been st... more ABSTRACT Data from a regional surface geochemistry survey in the North Viking Graben have been studied using principal components analysis, which allows process-specific fingerprints from extremely small amounts of thermogenic hydrocarbons in sea-bed sediments to be isolated and separated from data noise. Although the North Viking Grahem has thick, unfaulted Tertiary sediments with no obvious seepage conduits, the detected signals correlate with proved hydrocarbon accumulations in the area.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of First results from the CROP-11 deep seismic profile, central Apennines, Italy: evidence of mid-crustal folding

Journal of the Geological Society, 2006

... Apennines, Italy: evidence of mid-crustal folding. A. Billi 1 , MM Tiberti 2 , GP Cavinato 3 ... more ... Apennines, Italy: evidence of mid-crustal folding. A. Billi 1 , MM Tiberti 2 , GP Cavinato 3 , D. Cosentino 1 , E. Di Luzio 3 , JVA Keller 4 , C. Kluth 5 , L. Orlando 6 , M. Parotto 1 , A. Praturlon 1 , M. Romanelli 7 , F. Storti 1 & N. Wardell 7. ...

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Small-scale Seismic Stratigraphy and Paleogeographical Evolution of the Continental Shelf Facing the Se Elba Island (Northern Tyrrhenian Sea, Italy)

SEPM Journal of Sedimentary Research, 1991

Abstract Approximately 200 naut. mi. of high-resolution, single-channel seismic reflection profil... more Abstract Approximately 200 naut. mi. of high-resolution, single-channel seismic reflection profiles from the SE Elba continental shelf were analyzed. The analysis included a detailed three-dimensional reconstruction of the upper 100 m of shelf sediments. Six depositional ...

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Pavement testing by integrated geophysical methods: Feasibility, resolution and diagnostic potential

Journal of Applied Geophysics, 2017

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Environmental impact assessment for the re-erection of the Roma Stela in the North Stelae Park of Aksum (Ethiopia)

Protection of Historical Buildings Proceedings of the International Conference on Protection of Historical Buildings Prohitech 09 Rome Italy 21 24 June 2009 Prohitech 09 Vol 1 2009 Isbn 978 0 415 55804 4 Pags 899 904, 2009

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Approaches to increase resolution of radar signal

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Improvement of signal to noise ratio of Ground Penetrating Radar using CMP acquisition and data processing

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Caracteres stratigrafiques et evolution quaternaire du plateau continental de l'ile d'Elba sud oriental

Bookmarks Related papers MentionsView impact

Research paper thumbnail of 2D gravity modelling along the CROP11 seismic profile

The purpose of this work is to present a gravity reconstruction of the deepest portion of the CRO... more The purpose of this work is to present a gravity reconstruction of the deepest portion of the CROP 11 seismic line. The 2D gravity modelling is constrained by DSS data and by deep reflection seismic data obtained along the CROP 11 line. The role of the regional gravity anomaly trend of Central Italy as an independent constraint for the geological interpretation of the seismic line is also highlighted. The main gravity low (Fucino Plain) in the area is compensated by the combined effect of a regional deep-ening of both the Moho and the top of the crystalline basement, while the gravity low, located east towards the Maiella Mt., seems to originate between a 4 and 10 km depth. A lower density can be assigned to the western portion of the mantle with respect to the eastern side. The westernmost part of the upper crust in the model also shows a slightly lower density. The crystalline basement is not likely to be heavily involved in the deformation of the chain; ramp-and-flat deformations...

Bookmarks Related papers MentionsView impact

Research paper thumbnail of HAL-01022030V1

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Characterization of a Pre-Trajan Wall by Integrated Geophysical Methods

Archaeological Prospection, 2015

ABSTRACT The purpose of this study was to characterize a pre-Trajan mosaic-decorated wall structu... more ABSTRACT The purpose of this study was to characterize a pre-Trajan mosaic-decorated wall structure located beneath the Cryptoporticus of the ‘Baths of Trajan’ complex in Rome. The surveyed wall is 15 m long, 0.9 m wide and 3 to 5 m high. Ground penetrating radar (GPR) and P-wave seismic refraction tomography profiles were used to reconstruct the wall's inner structure, generate a map of the fractures and to evaluate the seismic velocities of the building materials. The wall was surveyed with horizontally and vertically dense GPR profiles and two seismic lines. The seismic lines and GPR profiles were capable of detecting a discontinuity between brick and travertine materials that compose the wall. The combined interpretation of the two non-invasive techniques allowed us to locate weak zones and fractures. This rapid, non-destructive and multi-parametric approach has proved to be effective for characterizing the current status of the wall and the results will be used by archaeologists to evaluate the wall's integrity and to preserve the structure in the future archaeological excavations. Copyright © 2015 John Wiley & Sons, Ltd.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Electrical permittivity and resistivity time lapses of multiphase DNAPLs in a lab test

Water Resources Research, 2015

ABSTRACT Dense Non-Aqueous Phase Liquids (DNAPLs) induce variation in electromagnetic characteris... more ABSTRACT Dense Non-Aqueous Phase Liquids (DNAPLs) induce variation in electromagnetic characteristics of the ground e.g. electric permittivity and resistivity. The most used indirect methods in the mapping of these physical characteristics are electrical resistivity and ground penetrating radar. To better understand the effect of DNAPL release on electrical permittivity and resistivity in a water saturated medium, we carried out a controlled laboratory experiment where the host material was simulated by glass beads and the DNAPL by HFE-7100 (hydrofluoroether). The experiment measured the electric resistivity and permittivity of each fluid, the multi-phase fluid system, and the host material, along with time-lapse electrical resistivity and GPR measurements in a controlled cell. We found that the different phases of DNAPL within a saturated medium (free, dissolved and gaseous phase) affect the physical characteristics differently. The reflection pull-up behind contaminated sediments, which is normally detected by GPR, was mainly inferred from the HFE free phase. The dissolved phase causes small variations in electric permittivity not usually readily detected by GPR measurements. Both the dissolved and free HFE phases induce variation in resistivity. This article is protected by copyright. All rights reserved.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Intensity of scattering for the lithotype characterization of an excavated pre-Trajan wall structure

Proceedings of the 15th International Conference on Ground Penetrating Radar, 2014

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Using polarimetric GPR antenna to characterize hidden cylinders

ABSTRACT The recent appearing of multi-component GPR antennas in the research and market fields i... more ABSTRACT The recent appearing of multi-component GPR antennas in the research and market fields is attracting interest towards the possibility to exploit polarization diversity in order to gain more information on the probed scenario. In this framework, based on a forward model, we investigate the potential of discerning the electromagnetic nature of cylindrical targets staring from B-scan measurements. The study is carried out via a FDTD numerical analysis and is supported by analytical results referred to the 2D case. The preliminary obtained results suggest that is actually possible to discriminate conducting and dielectric circular cylinders from multi-component GPR B-scans. Experimental results are also provided.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Location of sub-surface geoelectric anomalies for archaeological work — A reply

Geoexploration, 1989

... Réponse. Auteur(s) / Author(s). ORLANDO L. (1) ; PIRO S. ; VERSINO L. ; Affiliation(s) du ou ... more ... Réponse. Auteur(s) / Author(s). ORLANDO L. (1) ; PIRO S. ; VERSINO L. ; Affiliation(s) du ou des auteurs / Author(s) Affiliation(s). (1) Univ. ... Anglais Editeur / Publisher. Elsevier, Amsterdam,PAYS-BAS (1963-1991) (Revue) Mots-clés anglais / English Keywords. Archaeological sites ...

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Mantle-derived CO2 migration along active faults within an extensional basin margin (Fiumicino, Rome, Italy)

Tectonophysics

ABSTRACT Fluid migration along faults can be highly complex and spatially variable, with the pote... more ABSTRACT Fluid migration along faults can be highly complex and spatially variable, with the potential for channeled flow, accumulation in capped porous units, fault cross-flow, lateral migration along strike, or complete sealing. Extensional basin margins can be important for such migration, given the associated crustal thinning and decompression that takes place combined with potential geothermal or mantle gas sources. One such example is near the urban area of Rome, situated along the active extensional continental margin of the Tyrrhenian back arc basin and surrounded by Middle-Upper Pleistocene K-rich and arc-related volcanoes. Recent research activities in the area around Fiumicino, a town 25 km to the west of Rome, has highlighted the close spatial link between degassing CO2 and the faults that provide the necessary vertical migration pathways. In particular, detailed soil gas and gas flux surveys have highlighted the release at surface of large volumes of asthenospheric mantle CO2 in correspondence with normal faults observed in a new seismic reflection profile acquired along the Tiber River. Detailed reconstruction of the Pleistocene–Holocene stratigraphy of the area dates fault activity from 20,000 to 9000 years BP. It is proposed that the gas migrates preferentially along the cataclastic tectonic breccias of the faults until it encounters recent, unconsolidated sediments; porous units within this shallow stratigraphy act as temporary secondary traps for the leaking gas, with local gas release at the ground surface occurring where the sealing of the overlying aquitards has been compromised. Degassing and active faults confirm the extensional tectonics affecting the area and the geodynamic scenario of a mantle wedge beneath the western Apennines, associated with ongoing W-directed subduction. Moreover, degassing highlights the potential geochemical and seismic risks for the highly populated urban areas near Rome.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Lab-scale Tests in the Detection of a Multi-phase DNAPL

Near Surface Geoscience 2013, 2013

ABSTRACT In order to improve the understanding of the sensitivity of geophysical investigation to... more ABSTRACT In order to improve the understanding of the sensitivity of geophysical investigation to different phases of contaminant, GPR, electric resistivity and TDR measurements performed to detect and monitor DNAPLs spilled in a saturated media are analyzed. The experiment was performed in a Plexiglas cell filled with saturated grain glasses, simulating a permeable sand media, and hydrofluoroether (HFE-7100) simulating the contaminant. The results showed that GPR is more sensitive to the separate phase of contaminant because the dissolved phase does not significantly influence the electric permittivity. These results were confirmed by TDR measurement. On the contrary the electric resistive measurements resulted sensitive to all phases of contaminant (gaseous, separate and dissolved). The water flow and the variation of the water table contribute to the dissolution and migration of the DNAPL, even if the lab experiment showed that it cannot be easily removed within a saturated medium because its separate phase remains trapped within the pores and, very slowly, it moves downwards, also in the presence of a water flow.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Forecasting the next major thrust into space

Space Policy, 1996

Patterns in societal energy use enable forecasts of the times of future events associated with im... more Patterns in societal energy use enable forecasts of the times of future events associated with important human exploration and technology programs. Discovered in 1989, the 56 year energy cycle has previously been linked with many technological, economic, and social ...

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Time-lapse monitoring of DNAPL in a controlled cell

Near Surface Geophysics, 2013

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Lowstand terraces on Tyrrhenian Sea steep continental slopes

Marine Geology, 1996

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Test of a new surface geochemistry tool for resource prediction in frontier areas

Marine and Petroleum Geology, 1996

ABSTRACT Data from a regional surface geochemistry survey in the North Viking Graben have been st... more ABSTRACT Data from a regional surface geochemistry survey in the North Viking Graben have been studied using principal components analysis, which allows process-specific fingerprints from extremely small amounts of thermogenic hydrocarbons in sea-bed sediments to be isolated and separated from data noise. Although the North Viking Grahem has thick, unfaulted Tertiary sediments with no obvious seepage conduits, the detected signals correlate with proved hydrocarbon accumulations in the area.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of First results from the CROP-11 deep seismic profile, central Apennines, Italy: evidence of mid-crustal folding

Journal of the Geological Society, 2006

... Apennines, Italy: evidence of mid-crustal folding. A. Billi 1 , MM Tiberti 2 , GP Cavinato 3 ... more ... Apennines, Italy: evidence of mid-crustal folding. A. Billi 1 , MM Tiberti 2 , GP Cavinato 3 , D. Cosentino 1 , E. Di Luzio 3 , JVA Keller 4 , C. Kluth 5 , L. Orlando 6 , M. Parotto 1 , A. Praturlon 1 , M. Romanelli 7 , F. Storti 1 & N. Wardell 7. ...

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Small-scale Seismic Stratigraphy and Paleogeographical Evolution of the Continental Shelf Facing the Se Elba Island (Northern Tyrrhenian Sea, Italy)

SEPM Journal of Sedimentary Research, 1991

Abstract Approximately 200 naut. mi. of high-resolution, single-channel seismic reflection profil... more Abstract Approximately 200 naut. mi. of high-resolution, single-channel seismic reflection profiles from the SE Elba continental shelf were analyzed. The analysis included a detailed three-dimensional reconstruction of the upper 100 m of shelf sediments. Six depositional ...

Bookmarks Related papers MentionsView impact