Giulio Ceriola - Academia.edu (original) (raw)
Papers by Giulio Ceriola
Journal of The Electrochemical Society, 2001
ABSTRACT Fluorinated SiO2 (SiOF) films containing up to about 4 atom % of F and prepared by plasm... more ABSTRACT Fluorinated SiO2 (SiOF) films containing up to about 4 atom % of F and prepared by plasma enhanced chemical vapor deposition from SiH4, N2O, and CF4 precursors have been analyzed by infrared (LR) spectroscopy and X-ray photoelectron spectroscopy to extract chemical and structural information. LR data have demonstrated that the F insertion in the SiO2 network induces a deep structural modification of the film, mainly consisting in the increase of the Si-O-Si bond angle and in the decrease of the angle value dispersion. Also, the polarizability of the system results are significantly affected. Thermal annealing processes in the 400-600 degreesC range induce a marked F loss from the films. This phenomenon does not appreciably affect the peculiar structural properties of the SiOF films, because in all cases, the bond angles relative to the annealed films are equal or higher than those relative to the as deposited ones, while the polarizability of the system, sensitive to the E presence, is modified.
Materials Science in Semiconductor Processing, Feb 1, 2001
ABSTRACT SiO2 thin films have been prepared by plasma-enhanced chemical vapor deposition from SiH... more ABSTRACT SiO2 thin films have been prepared by plasma-enhanced chemical vapor deposition from SiH4 and N2O precursors by using different values of the N2O/SiH4 flow ratio (γ). Rutherford backscattering spectrometry has been employed to obtain the O/Si atomic ratio of the films. Infrared spectroscopy has demonstrated that oxides having the same O/Si atomic ratio are characterized by a different structure. Indeed, from the analysis of the Si–O–Si stretching peaks, we have found that the peak frequency and full-width at half-maximum (FWHM) are dependent on γ. Peak position and FWHM have been used to calculate the bond angle distribution of the films. The results have demonstrated the occurrence of a Si–O–Si bond angle relaxation phenomenon in films deposited by using a larger excess of N2O.
Marine Pollution Bulletin, Sep 1, 2022
EGU General Assembly Conference Abstracts, Apr 1, 2018
Remote Sensing, Jul 28, 2022
This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY
ESA Living Planet Symposium, Dec 1, 2013
Coastal zones host a large percentage of global population and economical and productive activiti... more Coastal zones host a large percentage of global population and economical and productive activities and are in need of a constant monitoring. The C-wams project is focused at implementing a suite EO services targeting two growing sectors: Waste Water Treatment and Desalination plants. The coast of the United Arab Emirates (UAE) hosts some of the largest desalination plants in the world and their operation can affect and be affected by the status of the WQ near the coast: the local phenomenon known as Red Tide caused increasing damages in the last 4 years. Some actors are involved in this respect in the Persian gulf, among them the Environment Agency of Abu Dhabi (EAD). In UAE an historical study-case is being performed aimed at identifying Red Tide events using MERIS images, integrating them with other medium and higher resolution data. The present work describes its scenario and the preliminary results obtained.
Coastal zones host a large percentage of global population and economical and productive activiti... more Coastal zones host a large percentage of global population and economical and productive activities and are in need of a constant monitoring. The C-wams project is focused at implementing a suite EO services targeting two growing sectors: Waste Water Treatment and Desalination plants. The coast of the United Arab Emirates (UAE) hosts some of the largest desalination plants in the world and their operation can affect and be affected by the status of the WQ near the coast: the local phenomenon known as Red Tide caused increasing damages in the last 4 years. Some actors are involved in this respect in the Persian gulf, among them the Environment Agency of Abu Dhabi (EAD). In UAE an historical study-case is being performed aimed at identifying Red Tide events using MERIS images, integrating them with other medium and higher resolution data. The present work describes its scenario and the preliminary results obtained.
Lecture Notes in Computer Science, 2023
Marine Pollution Bulletin
IEEE Access, 2021
Hyperspectral PRISMA images are new and have not yet been evaluated for their ability to detect m... more Hyperspectral PRISMA images are new and have not yet been evaluated for their ability to detect marine plastic litter. The hyperspectral PRISMA images have a fine spectral resolution, however, their spatial resolution is not high enough to enable the discrimination of small plastic objects in the ocean. Pansharpening with the panchromatic data enhances their spatial resolution and makes their detection capabilities a technological challenge. This study exploits, for the first time, the potential of using satellite hyperspectral data in detecting small-sized marine plastic litter. Controlled experiments with plastic targets of various sizes constructed from several materials have been conducted. The required pre-processing steps have been defined and 13 pansharpening methods have been applied and evaluated for their ability to spectrally discriminate plastics from water. Among them, the PCA-based substitution efficiently separates plastic spectra from water without producing duplicate edges, or pixelation. Plastic targets with size equivalent to 8% of the original hyperspectral image pixel coverage are easily detected. The same targets can also be observed in the panchromatic image, however, they cannot be detected solely by the panchromatic information as they are confused with other appearances. Exploiting spectra derived from the pan-sharpened hyperspectral images, an index combining methodology has been developed, which enables the detection of plastic objects. Although spectra of plastic materials present similarities with water spectra, some spectral characteristics can be utilized for producing marine plastic litter indexes. Based on these indexes, the index combining methodology has successfully detected the plastic targets and differentiated them from other materials. INDEX TERMS PRISMA satellite data, hyperspectral imaging, pansharpening, marine pollution, plastic litter detection, indexes, controlled experiments, spectral analysis, image denoising.
Presentation given at the 20th GHRSST science meeting (XX), ESA/ESRIN, Frascati, Italy, June 3 - ... more Presentation given at the 20th GHRSST science meeting (XX), ESA/ESRIN, Frascati, Italy, June 3 - 7, 2019.
The present work was performed under the ESA funded C-wams project, to demonstrate the utility of... more The present work was performed under the ESA funded C-wams project, to demonstrate the utility of Earth Observation (EO) data in support for monitoring the Arabian gulf sea coastal areas in the United Arab Emirates (UAE), with the purpose of monitoring the water quality and early detecting harmful algae bloom (HAB) approaching the coast, in particular the local phenomenon called ‘Red Tide’. The present work studied the use of very high resolution Pléiades images to retrieve very detailed maps of Total Suspended Mater (TSM) and Turbidity near the coast, where medium resolution sensors usually fails. These information will be provided to the user - the Environmental agency of Abu Dhabi (EAD) - as relevant parameters to monitoring coastal sites of high interest (desalination and aquaculture plants, public beaches, etc.) to demonstrate their utility in their current practices. In a further step the outcomes of this study on the Pléiades will lead to the definition of an operational serv...
Coastal zones are the most populated and utilized areas of the earth. Assessment and regular moni... more Coastal zones are the most populated and utilized areas of the earth. Assessment and regular monitoring of coastal waters quality are key activities for a sound management of the coastal areas. Chlorophyll-a (Chl-a) is one of the key parameters used for evaluating coastal water quality status. MarCoast is a three year project funded by the European Space Agency (ESA) with the aim of establishing a durable network of marine and coastal information services from remote sensing data, integrated with in-situ measurement, in close cooperation with national and regional authorities. In MarCoast, Chl-a and Water Transparency parameters are both measured with the MERIS instrument onboard ENVISAT. This paper describes the outcomes of validation activities of the MERIS products and algorithms performed for the Adriatic Sea using in situ data. First validation results made on oneyear dataset were promising. However, further analysis should be made to confirm this first year good results and to...
Upwelling is a phenomenon which involves wind-driven motion of dense, cool, and usually nutrient-... more Upwelling is a phenomenon which involves wind-driven motion of dense, cool, and usually nutrient-rich deep water towards the ocean surface replacing the warmer usually nutrient-depleted surface water. The deeper water is rich in nutrients, favoring the growth of seaweed and phytoplankton, and is characterized by high Chlorophyll-a (Chl-a) concentrations. Upwelling regions are considered as the most fertile fishing grounds and a so fundamental economic resource. In this paper, an approach for satellite monitoring of coastal upwelling regions is proposed based on Sea Surface Temperature (SST), and Chl-a information from Sentinel-3 OLCI Level-2 products, as well as, wind information from Copernicus Marine Environment Monitoring Service global product. The approach consists of the following parts. Firstly, using wind information the time periods of upwelling-favorable wind were identified. For these time periods, a thermal map is produced from Sentinel-3 SST products using a clustering ...
IEEE Access
Hyperspectral PRISMA images are new and have not yet been evaluated for their ability to detect m... more Hyperspectral PRISMA images are new and have not yet been evaluated for their ability to detect marine plastic litter. The hyperspectral PRISMA images have a fine spectral resolution, however, their spatial resolution is not high enough to enable the discrimination of small plastic objects in the ocean. Pansharpening with the panchromatic data enhances their spatial resolution and makes their detection capabilities a technological challenge. This study exploits, for the first time, the potential of using satellite hyperspectral data in detecting small-sized marine plastic litter. Controlled experiments with plastic targets of various sizes constructed from several materials have been conducted. The required pre-processing steps have been defined and 13 pansharpening methods have been applied and evaluated for their ability to spectrally discriminate plastics from water. Among them, the PCA-based substitution efficiently separates plastic spectra from water without producing duplicate edges, or pixelation. Plastic targets with size equivalent to 8% of the original hyperspectral image pixel coverage are easily detected. The same targets can also be observed in the panchromatic image, however, they cannot be detected solely by the panchromatic information as they are confused with other appearances. Exploiting spectra derived from the pan-sharpened hyperspectral images, an index combining methodology has been developed, which enables the detection of plastic objects. Although spectra of plastic materials present similarities with water spectra, some spectral characteristics can be utilized for producing marine plastic litter indexes. Based on these indexes, the index combining methodology has successfully detected the plastic targets and differentiated them from other materials. INDEX TERMS PRISMA satellite data, hyperspectral imaging, pansharpening, marine pollution, plastic litter detection, indexes, controlled experiments, spectral analysis, image denoising.
Coastal zones are the most populated and utilized areas of the earth. Assessment and regular moni... more Coastal zones are the most populated and utilized areas of the earth. Assessment and regular monitoring of coastal waters quality are key activities for a sound management of the coastal areas. Chlorophyll-a (Chl-a) is one of the key parameters used for evaluating coastal water quality status. MarCoast is a three year project funded by the European Space Agency (ESA) with the aim of establishing a durable network of marine and coastal information services from remote sensing data, integrated with in-situ measurement, in close cooperation with national and regional authorities. In MarCoast, Chl-a and Water Transparency parameters are both measured with the MERIS instrument onboard ENVISAT. This paper describes the outcomes of validation activities of the MERIS products and algorithms performed for the Adriatic Sea using in situ data. First validation results made on one-year dataset were promising. However, further analysis should be made to confirm this first year good results and t...
Coastal zones host a large percentage of global population and economical and productive activiti... more Coastal zones host a large percentage of global population and economical and productive activities and are in need of a constant monitoring. The C-wams project is focused at implementing a suite EO services targeting two growing sectors: Waste Water Treatment and Desalination plants. The coast of the United Arab Emirates (UAE) hosts some of the largest desalination plants in the world and their operation can affect and be affected by the status of the WQ near the coast: the local phenomenon known as Red Tide caused increasing damages in the last 4 years. Some actors are involved in this respect in the Persian gulf, among them the Environment Agency of Abu Dhabi (EAD). In UAE an historical study-case is being performed aimed at identifying Red Tide events using MERIS images, integrating them with other medium and higher resolution data. The present work describes its scenario and the preliminary results obtained.
Journal of The Electrochemical Society, 2001
ABSTRACT Fluorinated SiO2 (SiOF) films containing up to about 4 atom % of F and prepared by plasm... more ABSTRACT Fluorinated SiO2 (SiOF) films containing up to about 4 atom % of F and prepared by plasma enhanced chemical vapor deposition from SiH4, N2O, and CF4 precursors have been analyzed by infrared (LR) spectroscopy and X-ray photoelectron spectroscopy to extract chemical and structural information. LR data have demonstrated that the F insertion in the SiO2 network induces a deep structural modification of the film, mainly consisting in the increase of the Si-O-Si bond angle and in the decrease of the angle value dispersion. Also, the polarizability of the system results are significantly affected. Thermal annealing processes in the 400-600 degreesC range induce a marked F loss from the films. This phenomenon does not appreciably affect the peculiar structural properties of the SiOF films, because in all cases, the bond angles relative to the annealed films are equal or higher than those relative to the as deposited ones, while the polarizability of the system, sensitive to the E presence, is modified.
Materials Science in Semiconductor Processing, Feb 1, 2001
ABSTRACT SiO2 thin films have been prepared by plasma-enhanced chemical vapor deposition from SiH... more ABSTRACT SiO2 thin films have been prepared by plasma-enhanced chemical vapor deposition from SiH4 and N2O precursors by using different values of the N2O/SiH4 flow ratio (γ). Rutherford backscattering spectrometry has been employed to obtain the O/Si atomic ratio of the films. Infrared spectroscopy has demonstrated that oxides having the same O/Si atomic ratio are characterized by a different structure. Indeed, from the analysis of the Si–O–Si stretching peaks, we have found that the peak frequency and full-width at half-maximum (FWHM) are dependent on γ. Peak position and FWHM have been used to calculate the bond angle distribution of the films. The results have demonstrated the occurrence of a Si–O–Si bond angle relaxation phenomenon in films deposited by using a larger excess of N2O.
Marine Pollution Bulletin, Sep 1, 2022
EGU General Assembly Conference Abstracts, Apr 1, 2018
Remote Sensing, Jul 28, 2022
This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY
ESA Living Planet Symposium, Dec 1, 2013
Coastal zones host a large percentage of global population and economical and productive activiti... more Coastal zones host a large percentage of global population and economical and productive activities and are in need of a constant monitoring. The C-wams project is focused at implementing a suite EO services targeting two growing sectors: Waste Water Treatment and Desalination plants. The coast of the United Arab Emirates (UAE) hosts some of the largest desalination plants in the world and their operation can affect and be affected by the status of the WQ near the coast: the local phenomenon known as Red Tide caused increasing damages in the last 4 years. Some actors are involved in this respect in the Persian gulf, among them the Environment Agency of Abu Dhabi (EAD). In UAE an historical study-case is being performed aimed at identifying Red Tide events using MERIS images, integrating them with other medium and higher resolution data. The present work describes its scenario and the preliminary results obtained.
Coastal zones host a large percentage of global population and economical and productive activiti... more Coastal zones host a large percentage of global population and economical and productive activities and are in need of a constant monitoring. The C-wams project is focused at implementing a suite EO services targeting two growing sectors: Waste Water Treatment and Desalination plants. The coast of the United Arab Emirates (UAE) hosts some of the largest desalination plants in the world and their operation can affect and be affected by the status of the WQ near the coast: the local phenomenon known as Red Tide caused increasing damages in the last 4 years. Some actors are involved in this respect in the Persian gulf, among them the Environment Agency of Abu Dhabi (EAD). In UAE an historical study-case is being performed aimed at identifying Red Tide events using MERIS images, integrating them with other medium and higher resolution data. The present work describes its scenario and the preliminary results obtained.
Lecture Notes in Computer Science, 2023
Marine Pollution Bulletin
IEEE Access, 2021
Hyperspectral PRISMA images are new and have not yet been evaluated for their ability to detect m... more Hyperspectral PRISMA images are new and have not yet been evaluated for their ability to detect marine plastic litter. The hyperspectral PRISMA images have a fine spectral resolution, however, their spatial resolution is not high enough to enable the discrimination of small plastic objects in the ocean. Pansharpening with the panchromatic data enhances their spatial resolution and makes their detection capabilities a technological challenge. This study exploits, for the first time, the potential of using satellite hyperspectral data in detecting small-sized marine plastic litter. Controlled experiments with plastic targets of various sizes constructed from several materials have been conducted. The required pre-processing steps have been defined and 13 pansharpening methods have been applied and evaluated for their ability to spectrally discriminate plastics from water. Among them, the PCA-based substitution efficiently separates plastic spectra from water without producing duplicate edges, or pixelation. Plastic targets with size equivalent to 8% of the original hyperspectral image pixel coverage are easily detected. The same targets can also be observed in the panchromatic image, however, they cannot be detected solely by the panchromatic information as they are confused with other appearances. Exploiting spectra derived from the pan-sharpened hyperspectral images, an index combining methodology has been developed, which enables the detection of plastic objects. Although spectra of plastic materials present similarities with water spectra, some spectral characteristics can be utilized for producing marine plastic litter indexes. Based on these indexes, the index combining methodology has successfully detected the plastic targets and differentiated them from other materials. INDEX TERMS PRISMA satellite data, hyperspectral imaging, pansharpening, marine pollution, plastic litter detection, indexes, controlled experiments, spectral analysis, image denoising.
Presentation given at the 20th GHRSST science meeting (XX), ESA/ESRIN, Frascati, Italy, June 3 - ... more Presentation given at the 20th GHRSST science meeting (XX), ESA/ESRIN, Frascati, Italy, June 3 - 7, 2019.
The present work was performed under the ESA funded C-wams project, to demonstrate the utility of... more The present work was performed under the ESA funded C-wams project, to demonstrate the utility of Earth Observation (EO) data in support for monitoring the Arabian gulf sea coastal areas in the United Arab Emirates (UAE), with the purpose of monitoring the water quality and early detecting harmful algae bloom (HAB) approaching the coast, in particular the local phenomenon called ‘Red Tide’. The present work studied the use of very high resolution Pléiades images to retrieve very detailed maps of Total Suspended Mater (TSM) and Turbidity near the coast, where medium resolution sensors usually fails. These information will be provided to the user - the Environmental agency of Abu Dhabi (EAD) - as relevant parameters to monitoring coastal sites of high interest (desalination and aquaculture plants, public beaches, etc.) to demonstrate their utility in their current practices. In a further step the outcomes of this study on the Pléiades will lead to the definition of an operational serv...
Coastal zones are the most populated and utilized areas of the earth. Assessment and regular moni... more Coastal zones are the most populated and utilized areas of the earth. Assessment and regular monitoring of coastal waters quality are key activities for a sound management of the coastal areas. Chlorophyll-a (Chl-a) is one of the key parameters used for evaluating coastal water quality status. MarCoast is a three year project funded by the European Space Agency (ESA) with the aim of establishing a durable network of marine and coastal information services from remote sensing data, integrated with in-situ measurement, in close cooperation with national and regional authorities. In MarCoast, Chl-a and Water Transparency parameters are both measured with the MERIS instrument onboard ENVISAT. This paper describes the outcomes of validation activities of the MERIS products and algorithms performed for the Adriatic Sea using in situ data. First validation results made on oneyear dataset were promising. However, further analysis should be made to confirm this first year good results and to...
Upwelling is a phenomenon which involves wind-driven motion of dense, cool, and usually nutrient-... more Upwelling is a phenomenon which involves wind-driven motion of dense, cool, and usually nutrient-rich deep water towards the ocean surface replacing the warmer usually nutrient-depleted surface water. The deeper water is rich in nutrients, favoring the growth of seaweed and phytoplankton, and is characterized by high Chlorophyll-a (Chl-a) concentrations. Upwelling regions are considered as the most fertile fishing grounds and a so fundamental economic resource. In this paper, an approach for satellite monitoring of coastal upwelling regions is proposed based on Sea Surface Temperature (SST), and Chl-a information from Sentinel-3 OLCI Level-2 products, as well as, wind information from Copernicus Marine Environment Monitoring Service global product. The approach consists of the following parts. Firstly, using wind information the time periods of upwelling-favorable wind were identified. For these time periods, a thermal map is produced from Sentinel-3 SST products using a clustering ...
IEEE Access
Hyperspectral PRISMA images are new and have not yet been evaluated for their ability to detect m... more Hyperspectral PRISMA images are new and have not yet been evaluated for their ability to detect marine plastic litter. The hyperspectral PRISMA images have a fine spectral resolution, however, their spatial resolution is not high enough to enable the discrimination of small plastic objects in the ocean. Pansharpening with the panchromatic data enhances their spatial resolution and makes their detection capabilities a technological challenge. This study exploits, for the first time, the potential of using satellite hyperspectral data in detecting small-sized marine plastic litter. Controlled experiments with plastic targets of various sizes constructed from several materials have been conducted. The required pre-processing steps have been defined and 13 pansharpening methods have been applied and evaluated for their ability to spectrally discriminate plastics from water. Among them, the PCA-based substitution efficiently separates plastic spectra from water without producing duplicate edges, or pixelation. Plastic targets with size equivalent to 8% of the original hyperspectral image pixel coverage are easily detected. The same targets can also be observed in the panchromatic image, however, they cannot be detected solely by the panchromatic information as they are confused with other appearances. Exploiting spectra derived from the pan-sharpened hyperspectral images, an index combining methodology has been developed, which enables the detection of plastic objects. Although spectra of plastic materials present similarities with water spectra, some spectral characteristics can be utilized for producing marine plastic litter indexes. Based on these indexes, the index combining methodology has successfully detected the plastic targets and differentiated them from other materials. INDEX TERMS PRISMA satellite data, hyperspectral imaging, pansharpening, marine pollution, plastic litter detection, indexes, controlled experiments, spectral analysis, image denoising.
Coastal zones are the most populated and utilized areas of the earth. Assessment and regular moni... more Coastal zones are the most populated and utilized areas of the earth. Assessment and regular monitoring of coastal waters quality are key activities for a sound management of the coastal areas. Chlorophyll-a (Chl-a) is one of the key parameters used for evaluating coastal water quality status. MarCoast is a three year project funded by the European Space Agency (ESA) with the aim of establishing a durable network of marine and coastal information services from remote sensing data, integrated with in-situ measurement, in close cooperation with national and regional authorities. In MarCoast, Chl-a and Water Transparency parameters are both measured with the MERIS instrument onboard ENVISAT. This paper describes the outcomes of validation activities of the MERIS products and algorithms performed for the Adriatic Sea using in situ data. First validation results made on one-year dataset were promising. However, further analysis should be made to confirm this first year good results and t...
Coastal zones host a large percentage of global population and economical and productive activiti... more Coastal zones host a large percentage of global population and economical and productive activities and are in need of a constant monitoring. The C-wams project is focused at implementing a suite EO services targeting two growing sectors: Waste Water Treatment and Desalination plants. The coast of the United Arab Emirates (UAE) hosts some of the largest desalination plants in the world and their operation can affect and be affected by the status of the WQ near the coast: the local phenomenon known as Red Tide caused increasing damages in the last 4 years. Some actors are involved in this respect in the Persian gulf, among them the Environment Agency of Abu Dhabi (EAD). In UAE an historical study-case is being performed aimed at identifying Red Tide events using MERIS images, integrating them with other medium and higher resolution data. The present work describes its scenario and the preliminary results obtained.