An improved RST approach for timely alert and Near Real Time monitoring of oil spill disasters by using AVHRR data

Grimaldi, C. S. L.; Casciello, D.; Coviello, I.; Lacava, Teodosio; Pergola, Nicola; Tramutoli, Valerio

doi:10.5194/nhess-11-1281-2011

Cited by 24 publications

(17 citation statements)

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“…As for the comparison between WG refined fuels data and MODIS satellite products, the RST-OIL approach (Casciello et al, 2007, 2011, Grimaldi et al, 2009a, 2009b, 2011a, 2011b was applied. Results showed that no intense oil spills were observed in either the WG data or the satellite observations.…”

Section: Sea Water Optical Propertiesmentioning

confidence: 99%

Results of the first Wave Glider experiment in the southern Tyrrhenian Sea

et al. 2016

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<p>A wave-propelled autonomous vehicle (Wave Glider) instrumented with a variety of oceanographic and meteorological sensors was launched from Gulf of Naples on the 12<sup>th </sup>of September 2012 for a two-week mission in the Southern Tyrrhenian Sea. The main objective of the mission was a preliminary evaluation of the potential of commercial autonomous platforms to provide reliable measurements of sea surface parameters which can complement existing satellite based products moving from the local to the synoptic scale. To this aim Wave Glider measurements were compared to equivalent, or near-equivalent, satellite products achieved from MODIS (Moderate Resolution Imaging Spectroradiometer) sensors onboard the EOS (Earth Observing System) satellite platforms and from AVISO (Archiving Validation and Interpretation of Satellite Oceanographic Data). Level-3 near real time and Level-4 reprocessed sea surface foundation temperature products provided by the CMEMS (Copernicus Marine Environment Monitoring Service) were also included in this study as well as high resolution model output supplied by NEMO (Nucleus for European Modelling of the Ocean). The Wave Glider was equipped with sensors to measure temperature, salinity, currents, as well as Colored Dissolved Organic Matter (CDOM), turbidity and refined fuels fluorescence. The achieved results confirmed the emerging value of Wave Gliders in the framework of multiplatform monitoring systems of the ocean surface parameters. In particular, they showed that Wave Glider measurements captured the southern Tyrrhenian Sea major surface oceanographic features, including the coast to open sea haline gradient and the presence of a cyclone-anticyclone system in the southeastern sub-region. The Wave Glider also had the capability to monitor upper ocean currents at finer spatial and temporal scales than satellite altimetric observations and model outputs. Nonetheless, results stressed the existence of several limits in the combined use of satellite and Wave Glider observations and the necessity of further analyses concerning the monitoring of the ocean optical properties. In fact, Wave Glider and satellite-based products agree in terms of sea surface temperature and currents patterns, while bio-optical properties turned out to be less well correlated. No significant traces of refined fuels have been detected along the WG track.</p>

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Section: Sea Water Optical Propertiesmentioning

confidence: 99%

Results of the first Wave Glider experiment in the southern Tyrrhenian Sea

et al. 2016

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“…It is based on the use of historical series of satellite data for a complete signal characterization (spectral, spatial and temporal) followed by an anomaly detection step using automatically-generated local (i.e., for a specific time and place of observation) thresholds. In its application to oil spill detection, namely RST-OIL, TIR data acquired by AVHRR or MODIS have been used to detect different oil spills occurred in different areas in the past [20,26,27]. In this paper, we use MODIS 250 m spatial resolution optical data for the detection and the monitoring of oil spills.…”

Section: Methodsmentioning

confidence: 99%

“…Among the methodologies working in the optical band, the one specifically applied to oil detection based on the general robust satellite technique (RST), named RST-OIL [20,26,27], has already been successfully applied to Advanced Very High Resolution Radiometer (AVHRR) and Moderate Resolution Imaging Spectroradiometer (MODIS) TIR data [20,27], showing excellent performances with a high level of reliability (no false alarm). In this work, the same approach has been extended to MODIS visible bands to exploit their higher spatial resolution (250 m) than the thermal channel (1 km) to improve the detection sensitivity towards small spills such as in the wakes of ships or illicit vessel discharge.…”

Section: Introductionmentioning

confidence: 99%

“…Despite their lower spatial resolutions (from 30 m to 3 km) with respect to SAR, they show temporal resolutions (from 6 h of polar satellites to 5 min of geostationary ones) and coverage continuity that is more suitable for real-time monitoring of those areas exposed to oil pollution risk. Obviously, such data, which are freely available and easily accessible on the Internet, must be processed using automated methods of analysis able to ensure both adequate response times with respect to the observation frequency and reliable results regardless of the considered areas or sensors [20].…”

Section: Introductionmentioning

confidence: 99%

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A MODIS-Based Robust Satellite Technique (RST) for Timely Detection of Oil Spilled Areas

et al. 2017

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Natural crude-oil seepages, together with the oil released into seawater as a consequence of oil exploration/production/transportation activities, and operational discharges from tankers (i.e., oil dumped during cleaning actions) represent the main sources of sea oil pollution. Satellite remote sensing can be a useful tool for the management of such types of marine hazards, namely oil spills, mainly owing to the synoptic view and the good trade-off between spatial and temporal resolution, depending on the specific platform/sensor system used. In this paper, an innovative satellite-based technique for oil spill detection, based on the general robust satellite technique (RST) approach, is presented. It exploits the multi-temporal analysis of data acquired in the visible channels of the Moderate Resolution Imaging Spectroradiometer (MODIS) on board the Aqua satellite in order to automatically and quickly detect the presence of oil spills on the sea surface, with an attempt to minimize "false detections" caused by spurious effects associated with, for instance, cloud edges, sun/satellite geometries, sea currents, etc. The oil spill event that occurred in June 2007 off the south coast of Cyprus in the Mediterranean Sea has been considered as a test case. The resulting data, the reliability of which has been evaluated by both carrying out a confutation analysis and comparing them with those provided by the application of another independent MODIS-based method, showcase the potential of RST in identifying the presence of oil with a high level of accuracy.

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“…The analysis of these events shows that even the largest and seemingly well-prepared facilities can be vulnerable to Natechs if risks are not considered adequately. Grimaldi et al (2011) show the application results of an improved version of RST (Robust Satellite Technique) to maritime oil spill detection and monitoring. The proposed approach has been applied to the case of oil spills off the Kuwait and Saudi Arabian coasts in January 1991 and during the Lebanon War in July 2006.…”

mentioning

confidence: 99%