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Fully Polarimetric Slick-free and Slick-covered Sea Surface Scattering

Attilio Gambardella(1), Ferdinando Nunziata(1) and Maurizio Migliaccio(1)

(1) Università di Napoli Parthenope, Centro Direzionale, Isola C4, 80143 Napoli, Italy


Oil spills dramatically affect the marine ecosystem and have to be properly observed to enforce laws and minimize their noxious effects [1]. Microwave remote sensing plays an important role in oil spill monitoring [2]. In fact, the use of microwave remote sensing sensors allows monitoring oil spills on the open ocean independently from meteorological conditions. New oil spill detection studies based on polarimetric synthetic aperture radar (SAR) data have been conducted in recent years [3]-[4]. In fact, there is a general consensus that radar polarimetry is able to provide additional information for environmental remote sensing applications. Hence, several Earth Observation satellite missions will carry on board polarimetric SARs. In this paper, the use of the <H/A/Alpha> Cloude-Pottier decomposition together with an extended Bragg scattering model has been considered to examine the scattering contributions from sea surface and detected dark areas due to the presence of antropogenic and biogenic slicks [5]. Experiments are conducted on fully polarimetric C- and L-band SAR data. Results show the usefulness of the proposed approach.

[1] Fukuyama A. K., Shigenaka G., Van Blaricom G. R.1998. “Oil Spill Impacts and the Biological Basis for Response Guidance: an Applied Synthesis of Research on Tree Subartic Intertidal Communities”. NOAA Tech. Memorandum NOS ORCA 125, Seattle, Washington, March. [2] Delilah H. A., 2002. “Marine Oil Pollution: Technologies and Technologies for Detection and Early Warning”. European Commission JRC report, EUR 20231 EN. [3] Gade M., Alpers W., Huhnerfuss H., Masuko H., Kobayashi T., 1998. “Imaging of biogenic and anthropogenic ocean surface films by the multifrequency/multipolarization SIR-C/X-SAR”. J. Geophys. Res., vol. 103, no. C9, pp. 18851- 18866, August. [4] M. Migliaccio, A. Gambardella, M. Tranfaglia, “SAR Polarimetry to Observe Oil Spills”, IEEE Transaction on Geoscience and Remote Sensing, vol.45 , no.2 , pp 506-511, Feb. 2007. [5] Hajnsek I., Pottier E., Cloude S. R., 2003. “Inversion of Surface Parameters form Polarimetric SAR”. IEEE Trans. on Geosci. and Remote Sensing, vol. 41, no. 4, pp. 727- 744, April.


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