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Papers by Gregory De Martino

Research paper thumbnail of An innovative time-depth conversion for the management of buried scenarios with strong discontinuities

Journal of applied geophysics, Jun 1, 2024

Research paper thumbnail of Non-destructive tests for monitoring the degradation of reinforced concrete structures: preliminary results of Icarus project

Research paper thumbnail of Integrated use of aerial and ground-based close-range remote sensing techniques to support preventive archaeology: the case study of Ascoli Satriano (FG)

Research paper thumbnail of Geophysical Techniques for Monitoring Carbonate Karstic Rocks

Research paper thumbnail of Multi-sensing geophysical surveys at the Archaeological Park of Paestum: the discovery of a small Doric temple

Research paper thumbnail of Cooperative use of non invasive sensing methodologies for the geophysical monitoring of the archaeological park of Paestum

Research paper thumbnail of The lost church of Montemurro (Basilicata, Italy): Ground Penetrating Radar and Electrical Resistivity Tomography for detecting its buried remains in S. Maria Square

EGU General Assembly Conference Abstracts, May 1, 2010

Research paper thumbnail of 3D deep geoelectrical exploration in the Larderello geothermal sites (Italy)

Physics of the Earth and Planetary Interiors, Aug 1, 2022

Research paper thumbnail of Investigation of the Geological Structure of the Tramutola Area (Agri Valley): Inferences for the Presence of Geofluids at Shallow Crustal Levels

Geosciences, Mar 13, 2023

Research paper thumbnail of Geofluids inferences using deep electrical resistivity tomography for a sustainable energy transition

In the last years, the use of Deep Electrical Resistivity Tomography (DERT) has become more commo... more In the last years, the use of Deep Electrical Resistivity Tomography (DERT) has become more common for the investigation of areas with complex geological setting. The considerable resolution obtained through such a technique makes it possible to discriminate much more effectively the resistivity contrasts existing in the shallower crustal levels, thus providing more reliable information on the physical conditions of the rocks, the presence of structural discontinuity surfaces, on the presence and trend in the subsoil of aquifers and/or fluids of various origins.For these reasons, some DERT investigations were carried out in a structurally complex area located close to Tramutola village, in the western side of the Agri Valley, where the largest onshore hydrocarbon reservoir in west Europe is present.The Tramutola site represented a key sector for the early petroleum exploration and exploitation of the area. Natural oil spills were historically known since the 19th century in the investigated area, and these helped the national oil company to identify the first shallower hydrocarbon traces. Furthermore, a considerable amount of sulphureous hypothermal water (~28 °C with a flow rate of 10 l/s) with associated gases (mainly CH4 and CO2) was found during the drilling of the “Tramutola2” well (404.4 m) in 1936. From a geological point of view, the study area, is characterized by the presence of a complete section of the tectonic units of the southern Apennines and a complex structural framework, not yet fully clarified, which affect fluids circulation.To foster the efficient and sustainable use of the geothermal resource in Tramutola area, surface and subsurface geological, hydrogeological and new geophysical data were combined in order deepen our knowledges about the reservoir of the hypothermal fluids and their circulation.The municipality of Tramutola is interested in the rehabilitation of the abandoned oil wells, both in terms of exploitation of the geothermal resource and for the realisation of a tourist “Park of energy”. The aim is to provide a wide audience with strategies, models, and technical skills capable of making visitors more active and critical towards the sustainable use of energy resources. Furthermore, the possible exploitation of geothermal resources of the Tramutola site represents a strategic action in the Basilicata region as a prototype of energy transition from fossil fuels to more environmentally friendly energy resources. This is also essential to satisfy the increased demand for clean energy in the area (no. 7 affordable and clean energy United Nations’ SDGs) and also contribute to climate change mitigation through the reduction of CO2 emissions (13 climate action).

Research paper thumbnail of Integration of remote sensing and ground-based techniques for the study of land degradation phenomena in coastal areas

Research paper thumbnail of Geophysical techniques for the characterization of settlement phenomenon in building foundations

Research paper thumbnail of Groundwater Monitoring and Control by Using Electromagnetic Sensing Techniques

Springer eBooks, 2013

Groundwater resources, which are exposed to overexploitation and pollution at regional and local ... more Groundwater resources, which are exposed to overexploitation and pollution at regional and local levels, may take benefit from fast, nonintrusive, and inexpensive monitoring methods based on electromagnetic techniques. In fact, the available technologies can help to improve management and protection of the aquifers. This chapter deals with the role of electromagnetic sensing techniques in water monitoring with a specific focus to pollution surveys in groundwater bodies. Being sensitive to the presence of water in the subsoil and its electrical conductivity, which in turn depends on the ionic content, the electromagnetic sensing techniques are useful tools for groundwater identification and soil quality assessment. In fact, these sensing techniques offer advantages such as quickness, nonintrusivity, and the possibility of investigating large areas at reasonable costs. However, the appropriate use of these techniques implies an adequate knowledge of their working principles as well as of their on field application procedures, which mainly depend on the survey aim and the geological and logistic conditions of the site. This chapter also discusses the uncertainty in the interpretation of results, which is due to the fact that the electromagnetic sensing techniques are based on indirect inspections. Several strategies can be exploited to reduce ambiguity of results, such as the integration of different electromagnetic techniques and the comparison between field data and those provided by laboratory experiments. These issues are herein addressed through practical examples concerning two study cases, one referred to a site located in Serbia-Herzegovina and one located in Italy. In particular, we illustrate the physical concepts, the operative aspects, the data processing, and the integration of results concerning the following measurement techniques: electrical resistivity tomography (ERT), ground-penetrating radar (GPR), time-domain-induced polarization (time domain IP), and self-potential method (SP). The two study cases concerns an industrial site and a large waste dump structure. These sites represent specific examples of soil monitoring and have been selected in order to evaluate the performance of the proposed techniques. For each site, we provide a description of the survey results accounting for geological evidences, logistic constraints, and physical limitation of the used techniques. Finally, we highlight the advantages offered by a cooperative use of different techniques and suggest strategies to overcome intrinsic limitations of each one of the considered survey methods.

Research paper thumbnail of Geoelectrical Measurements to Monitor a Hydrocarbon Leakage in the Aquifer: Simulation Experiment in the Lab

Geosciences, Sep 29, 2022

Research paper thumbnail of The pre‐Roman hilltop settlement of Monte Torretta di Pietragalla: preliminary results of the geophysical survey

Archaeological Prospection, Aug 31, 2020

International audienceMonte Torretta (Pietragalla, PZ) represents one of the most interesting and... more International audienceMonte Torretta (Pietragalla, PZ) represents one of the most interesting and less known settlements of ancient Lucania. The site was investigated in the last 50 years by several archaeological activities, but no result has been published so far. In order to study and disseminate the archaeological value of the site, the Université Paris 1 Panthéon‐Sorbonne and the Humboldt‐Universität zu Berlin has established the joint Pietragalla Project. The project is based on a multidisciplinary approach, which aims at studying the settlement and at recovering the lost information obtained by the previous archaeological works. The first geophysical activities conducted on the site offer important results, which increase the knowledge of the site and will help the archaeologists in their future investigation. Through the comparison and integration of different geophysical methodologies, including ground penetrating radar, electrical resistivity tomography and geomagnetic measurements, various information was obtained in proximity of the fortification walls and the two main gates of the site. Moreover, geological and geomorphological interpretations highlighted important information on the archaeological site. The obtained results show the importance of geophysical activities in a context strongly damaged by rural activities of the last century. From an archaeological point of view, the geophysical surveys conducted in 2017 and 2018 show a dense building activity within the area enclosed by the walls. Thanks to these results, we are now able to understand the settlement pattern in the longue durée, at the least for the western part of the infra‐muros area

Research paper thumbnail of Urban geophysical approach to characterize the subsoil of the main square in San Benedetto del Tronto town (Italy)

Engineering Geology, Jul 1, 2019

Research paper thumbnail of Geophysical Techniques for Monitoring Settlement Phenomena Occurring in Reinforced Concrete Buildings

Surveys in Geophysics, Sep 28, 2019

Research paper thumbnail of Optimization of Aquifer Monitoring through Time-Lapse Electrical Resistivity Tomography Integrated with Machine-Learning and Predictive Algorithms

Applied sciences, Sep 11, 2022

Research paper thumbnail of Preliminary geophysical investigation in the archaeological site of Bocca delle Menate (Comacchio, FE)

Journal of Physics: Conference Series

The Bocca delle Menate archaeological site is located in Comacchio town (FE) and provides importa... more The Bocca delle Menate archaeological site is located in Comacchio town (FE) and provides important evidence of the Roman presence in the Po Delta (Italy). The excavations realized sixty years ago have confirmed the presence of an extensive Roman villa and some part of it was highlighted. With the aim to identify the villa plan and the old highlighted archaeological remains, an archaeological preliminary survey and a geomagnetic geophysical campaign were carried out in October 2020. Although geophysical methods are now considered the best tools for archaeological detections, our results show that they are also excellent tools for the preservation, protection and monitoring of the excavated archaeological heritage.

Research paper thumbnail of Combining Multi-temporal Electric Resistivity Tomography and Predictive Algorithms for supporting aquifer monitoring and management

NSG2021 1st Conference on Hydrogeophysics, 2021

Summary This work presents the results of geophysical data prediction by applying statistical and... more Summary This work presents the results of geophysical data prediction by applying statistical and predictive algorithms to a multi-temporal Electric Resistivity Tomography dataset. A cross-hole time-lapse resistivity survey was carried out during an experiment addressed to monitor a tracer diffusion in a real aquifer. In order to retrieve a number of “predicted” pseudo sections of apparent resistivity values, we applied the Vector Autoregressive (VAR) and Recurrent Neural Network (RNN) algorithms over a sequence of 18 ERT surveys. Real and predicted dataset allow to delineate plume evolution under 30 m depth, describing a complex transport pathway influenced by hydraulic properties of the studied aquifer.

Research paper thumbnail of An innovative time-depth conversion for the management of buried scenarios with strong discontinuities

Journal of applied geophysics, Jun 1, 2024

Research paper thumbnail of Non-destructive tests for monitoring the degradation of reinforced concrete structures: preliminary results of Icarus project

Research paper thumbnail of Integrated use of aerial and ground-based close-range remote sensing techniques to support preventive archaeology: the case study of Ascoli Satriano (FG)

Research paper thumbnail of Geophysical Techniques for Monitoring Carbonate Karstic Rocks

Research paper thumbnail of Multi-sensing geophysical surveys at the Archaeological Park of Paestum: the discovery of a small Doric temple

Research paper thumbnail of Cooperative use of non invasive sensing methodologies for the geophysical monitoring of the archaeological park of Paestum

Research paper thumbnail of The lost church of Montemurro (Basilicata, Italy): Ground Penetrating Radar and Electrical Resistivity Tomography for detecting its buried remains in S. Maria Square

EGU General Assembly Conference Abstracts, May 1, 2010

Research paper thumbnail of 3D deep geoelectrical exploration in the Larderello geothermal sites (Italy)

Physics of the Earth and Planetary Interiors, Aug 1, 2022

Research paper thumbnail of Investigation of the Geological Structure of the Tramutola Area (Agri Valley): Inferences for the Presence of Geofluids at Shallow Crustal Levels

Geosciences, Mar 13, 2023

Research paper thumbnail of Geofluids inferences using deep electrical resistivity tomography for a sustainable energy transition

In the last years, the use of Deep Electrical Resistivity Tomography (DERT) has become more commo... more In the last years, the use of Deep Electrical Resistivity Tomography (DERT) has become more common for the investigation of areas with complex geological setting. The considerable resolution obtained through such a technique makes it possible to discriminate much more effectively the resistivity contrasts existing in the shallower crustal levels, thus providing more reliable information on the physical conditions of the rocks, the presence of structural discontinuity surfaces, on the presence and trend in the subsoil of aquifers and/or fluids of various origins.For these reasons, some DERT investigations were carried out in a structurally complex area located close to Tramutola village, in the western side of the Agri Valley, where the largest onshore hydrocarbon reservoir in west Europe is present.The Tramutola site represented a key sector for the early petroleum exploration and exploitation of the area. Natural oil spills were historically known since the 19th century in the investigated area, and these helped the national oil company to identify the first shallower hydrocarbon traces. Furthermore, a considerable amount of sulphureous hypothermal water (~28 °C with a flow rate of 10 l/s) with associated gases (mainly CH4 and CO2) was found during the drilling of the “Tramutola2” well (404.4 m) in 1936. From a geological point of view, the study area, is characterized by the presence of a complete section of the tectonic units of the southern Apennines and a complex structural framework, not yet fully clarified, which affect fluids circulation.To foster the efficient and sustainable use of the geothermal resource in Tramutola area, surface and subsurface geological, hydrogeological and new geophysical data were combined in order deepen our knowledges about the reservoir of the hypothermal fluids and their circulation.The municipality of Tramutola is interested in the rehabilitation of the abandoned oil wells, both in terms of exploitation of the geothermal resource and for the realisation of a tourist “Park of energy”. The aim is to provide a wide audience with strategies, models, and technical skills capable of making visitors more active and critical towards the sustainable use of energy resources. Furthermore, the possible exploitation of geothermal resources of the Tramutola site represents a strategic action in the Basilicata region as a prototype of energy transition from fossil fuels to more environmentally friendly energy resources. This is also essential to satisfy the increased demand for clean energy in the area (no. 7 affordable and clean energy United Nations’ SDGs) and also contribute to climate change mitigation through the reduction of CO2 emissions (13 climate action).

Research paper thumbnail of Integration of remote sensing and ground-based techniques for the study of land degradation phenomena in coastal areas

Research paper thumbnail of Geophysical techniques for the characterization of settlement phenomenon in building foundations

Research paper thumbnail of Groundwater Monitoring and Control by Using Electromagnetic Sensing Techniques

Springer eBooks, 2013

Groundwater resources, which are exposed to overexploitation and pollution at regional and local ... more Groundwater resources, which are exposed to overexploitation and pollution at regional and local levels, may take benefit from fast, nonintrusive, and inexpensive monitoring methods based on electromagnetic techniques. In fact, the available technologies can help to improve management and protection of the aquifers. This chapter deals with the role of electromagnetic sensing techniques in water monitoring with a specific focus to pollution surveys in groundwater bodies. Being sensitive to the presence of water in the subsoil and its electrical conductivity, which in turn depends on the ionic content, the electromagnetic sensing techniques are useful tools for groundwater identification and soil quality assessment. In fact, these sensing techniques offer advantages such as quickness, nonintrusivity, and the possibility of investigating large areas at reasonable costs. However, the appropriate use of these techniques implies an adequate knowledge of their working principles as well as of their on field application procedures, which mainly depend on the survey aim and the geological and logistic conditions of the site. This chapter also discusses the uncertainty in the interpretation of results, which is due to the fact that the electromagnetic sensing techniques are based on indirect inspections. Several strategies can be exploited to reduce ambiguity of results, such as the integration of different electromagnetic techniques and the comparison between field data and those provided by laboratory experiments. These issues are herein addressed through practical examples concerning two study cases, one referred to a site located in Serbia-Herzegovina and one located in Italy. In particular, we illustrate the physical concepts, the operative aspects, the data processing, and the integration of results concerning the following measurement techniques: electrical resistivity tomography (ERT), ground-penetrating radar (GPR), time-domain-induced polarization (time domain IP), and self-potential method (SP). The two study cases concerns an industrial site and a large waste dump structure. These sites represent specific examples of soil monitoring and have been selected in order to evaluate the performance of the proposed techniques. For each site, we provide a description of the survey results accounting for geological evidences, logistic constraints, and physical limitation of the used techniques. Finally, we highlight the advantages offered by a cooperative use of different techniques and suggest strategies to overcome intrinsic limitations of each one of the considered survey methods.

Research paper thumbnail of Geoelectrical Measurements to Monitor a Hydrocarbon Leakage in the Aquifer: Simulation Experiment in the Lab

Geosciences, Sep 29, 2022

Research paper thumbnail of The pre‐Roman hilltop settlement of Monte Torretta di Pietragalla: preliminary results of the geophysical survey

Archaeological Prospection, Aug 31, 2020

International audienceMonte Torretta (Pietragalla, PZ) represents one of the most interesting and... more International audienceMonte Torretta (Pietragalla, PZ) represents one of the most interesting and less known settlements of ancient Lucania. The site was investigated in the last 50 years by several archaeological activities, but no result has been published so far. In order to study and disseminate the archaeological value of the site, the Université Paris 1 Panthéon‐Sorbonne and the Humboldt‐Universität zu Berlin has established the joint Pietragalla Project. The project is based on a multidisciplinary approach, which aims at studying the settlement and at recovering the lost information obtained by the previous archaeological works. The first geophysical activities conducted on the site offer important results, which increase the knowledge of the site and will help the archaeologists in their future investigation. Through the comparison and integration of different geophysical methodologies, including ground penetrating radar, electrical resistivity tomography and geomagnetic measurements, various information was obtained in proximity of the fortification walls and the two main gates of the site. Moreover, geological and geomorphological interpretations highlighted important information on the archaeological site. The obtained results show the importance of geophysical activities in a context strongly damaged by rural activities of the last century. From an archaeological point of view, the geophysical surveys conducted in 2017 and 2018 show a dense building activity within the area enclosed by the walls. Thanks to these results, we are now able to understand the settlement pattern in the longue durée, at the least for the western part of the infra‐muros area

Research paper thumbnail of Urban geophysical approach to characterize the subsoil of the main square in San Benedetto del Tronto town (Italy)

Engineering Geology, Jul 1, 2019

Research paper thumbnail of Geophysical Techniques for Monitoring Settlement Phenomena Occurring in Reinforced Concrete Buildings

Surveys in Geophysics, Sep 28, 2019

Research paper thumbnail of Optimization of Aquifer Monitoring through Time-Lapse Electrical Resistivity Tomography Integrated with Machine-Learning and Predictive Algorithms

Applied sciences, Sep 11, 2022

Research paper thumbnail of Preliminary geophysical investigation in the archaeological site of Bocca delle Menate (Comacchio, FE)

Journal of Physics: Conference Series

The Bocca delle Menate archaeological site is located in Comacchio town (FE) and provides importa... more The Bocca delle Menate archaeological site is located in Comacchio town (FE) and provides important evidence of the Roman presence in the Po Delta (Italy). The excavations realized sixty years ago have confirmed the presence of an extensive Roman villa and some part of it was highlighted. With the aim to identify the villa plan and the old highlighted archaeological remains, an archaeological preliminary survey and a geomagnetic geophysical campaign were carried out in October 2020. Although geophysical methods are now considered the best tools for archaeological detections, our results show that they are also excellent tools for the preservation, protection and monitoring of the excavated archaeological heritage.

Research paper thumbnail of Combining Multi-temporal Electric Resistivity Tomography and Predictive Algorithms for supporting aquifer monitoring and management

NSG2021 1st Conference on Hydrogeophysics, 2021

Summary This work presents the results of geophysical data prediction by applying statistical and... more Summary This work presents the results of geophysical data prediction by applying statistical and predictive algorithms to a multi-temporal Electric Resistivity Tomography dataset. A cross-hole time-lapse resistivity survey was carried out during an experiment addressed to monitor a tracer diffusion in a real aquifer. In order to retrieve a number of “predicted” pseudo sections of apparent resistivity values, we applied the Vector Autoregressive (VAR) and Recurrent Neural Network (RNN) algorithms over a sequence of 18 ERT surveys. Real and predicted dataset allow to delineate plume evolution under 30 m depth, describing a complex transport pathway influenced by hydraulic properties of the studied aquifer.