Radar signatures of oil films floating on the sea surface and the Marangoni effect

Alpers, Werner; Hühnerfuß, Heinrich

doi:10.1029/jc093ic04p03642

Cited by 140 publications

(58 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Oil influence on the ocean spectrum is a widely studied issue in literature, with great attention to measurements techniques [8], [31]- [39], but no sound theoretical model for the spectrum of water covered by oil is available. On the other hand, a theoretical model of ocean spectra modification in presence of surfactant is highly desirable for SAR simulation purposes.…”

Section: Oil Slick Influence On Ocean Surface Propertiesmentioning

confidence: 99%

“…We stress that the results reported in literature are sometimes controversial, and analytical expressions of some of the terms appearing in (4.1) (e.g., nonlinear terms and breaking-wave dissipation terms) are considered to be poorly known by all authors. In this paper, we adopt a model based on the Marangoni theory [8], [31]- [34] and on a nonlinear energy transfer theory. This model has been selected because it arises from a theoretical physical-chemical approach and provides a reasonable physical interpretation to a typical behavior of the wave damping in a range of wavenumber of great interest for SAR applications.…”

Section: Oil Slick Influence On Ocean Surface Propertiesmentioning

confidence: 99%

See 1 more Smart Citation

SAR raw signal simulation of oil slicks in ocean environments

Franceschetti¹,

Iodice²,

Riccio³

et al. 2002

IEEE Trans. Geosci. Remote Sensing

105

View full text Add to dashboard Cite

Abstract-Synthetic aperture radar (SAR) raw signal simulation is a powerful tool for design of oil slick detection and interpretation systems. In this paper, the ocean simulation issues are presented, and the main problems relating to the oil presence on the sea surface are treated. Attention is focused on the electromagnetic side of the problem, with care to the sensor signatures, the dielectric, physical-chemical, and geometric nature of the oil slick, and to the environmental conditions. The presented SAR simulator is based on an ocean model and an oil slick model. The former makes use of multiscale description of the ocean surface: the distributed surface model for the SAR-ocean interaction is considered by taking into account the nonlinear hydrodynamic effect for the water particle movement. The latter model implements a modification of the ocean spectrum, based on the Marangoni theory and accounting for the nonlinear wave interaction mechanism. However, the proposed SAR raw signal simulator is modular and flexible, thus allowing other possible physical models for modeling the oil slick effect over the ocean spectrum. Meaningful SAR simulation experiments are presented and discussed, elucidating the role of difference on pollutants, oil thickness, wind speed and direction, incident wavelength and angle and other radar parameters. Validation of the simulator is also presented by comparison with experimental data. A striking conclusion of the paper is that higher order moments (from the second on) of oil slick SAR image statistics are quite different compared to those pertinent to an equivalent wind speed decrease on the imaged area. This suggests a convenient way to define new appropriate oil slick signatures.

show abstract

Section: Oil Slick Influence On Ocean Surface Propertiesmentioning

confidence: 99%

Section: Oil Slick Influence On Ocean Surface Propertiesmentioning

confidence: 99%

SAR raw signal simulation of oil slicks in ocean environments

Franceschetti¹,

Iodice²,

Riccio³

et al. 2002

IEEE Trans. Geosci. Remote Sensing

105

View full text Add to dashboard Cite

show abstract

“…It is very clear this is a serious oil spill that spreaded over 14 km 2 , and most propabley it was released on July 25 th , seeing the rapid progress and development of the spill through the follwing days. From the dark color of the spill on 25 th and 26 th , it is like a fresh oil spill, and within few days (the image of July 31), the spill started to disappear in the water causing a lot of damage to the marine life.…”

Section: Acknowlogementmentioning

confidence: 99%

Oil Spill Detection and Monitoring of Abu Dhabi Coastal Zone Using Kompsat-5 Sar Imagery

Harahsheh¹

2016

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

View full text Add to dashboard Cite

ABSTRACT:Abu Dhabi Government endorsed vision for its Maritime Strategy 'A safe, secure and sustainable maritime domain for Abu Dhabi'. This research study share this vision using the concept of monitoring as tool for marine protection against any possible oil pollution. The best technology to detect and monitor oil pollution and in particularly oil spill is SAR imagery In this case study we chose KOMPSAT-5 SAR.KOMPSAT-5 carries X-band SAR for earth observation, and is capable of day-and-night imaging under all weather condition. It provides three operation modes: High Resolution Mode to provide 1 m resolution, Standard Mode to provide 3 m resolution and Wide Swath Mode to provide 20 m resolution with 100 km swath at 550 km altitude, with four modes of polarization. KOMPSAT-5 provides products for various applications; security and defense, mapping, and natural resource management, environmental monitoring, disaster monitoring and more. For our case study we chose to work with Wide Swath mode (WS) with Vertical polarization (VV) to cover a wide area of interest located to the north west of Abu Dhabi including some important islands like "Zirku Island", and areas with oil production activities.

show abstract

“…Theoretical and experimental work has been carried out to understand the dampening effect of oil spills (Alpers & Huehnerfuss, 1988;. For very thin floating oil film, its elastic property gives rise to local surface tension gradients, which generates longitudinal waves.…”

Section: Sar Imaging Of Oil Spillsmentioning

confidence: 99%

Dark-spot detection from SAR intensity imagery with spatial density thresholding for oil-spill monitoring

Shu

Yousif

et al. 2010

Remote Sensing of Environment

View full text Add to dashboard Cite

Since the 1980s, satellite-borne synthetic aperture radar (SAR) has been investigated for early warning and monitoring of marine oil spills to permit effective satellite surveillance in the marine environment.Automated detection of oil spills from satellite SAR intensity imagery consists of three steps: 1) Detection of dark spots; 2) Extraction of features from the detected dark spots; and 3) Classification of the dark spots into oil spills and look-alikes. However, marine oil spill detection is a very difficult and challenging task. Open questions exist in each of the three stages.In this thesis, the focus is on the first stage-dark spot detection. An efficient and effective dark spot detection method is critical and fundamental for developing an automated oil spill detection system. A novel method for this task is presented. The key to the method is utilizing the spatial density feature to enhance the separability of dark spots and the background. After an adaptive intensity thresholding, a spatial density thresholding is further

show abstract

Radar signatures of oil films floating on the sea surface and the Marangoni effect

Cited by 140 publications

References 21 publications

SAR raw signal simulation of oil slicks in ocean environments

SAR raw signal simulation of oil slicks in ocean environments

Oil Spill Detection and Monitoring of Abu Dhabi Coastal Zone Using Kompsat-5 Sar Imagery

Dark-spot detection from SAR intensity imagery with spatial density thresholding for oil-spill monitoring

Contact Info

Product

Resources

About