Data/hora: 16/06/2024 15:13:23

Provedor de dados: | 5
País: | France
Título: | Wave Breaking in Slicks: Impacts on C-Band Quad-Polarized SAR Measurements
Autores: | Wergeland, Morten; Kudryavtsev, Vladimir; Chapron, Bertrand; Brekke, Camilla; Johannessen, Johnny A.
Data: | 2016-11
Ano: | 2016
Palavras-chave: | Oil pollution; Radar imaging; Sea surface; Surface waves.
Resumo: | Radarsat-2 C-band quad-polarization SAR observations of crude oil, emulsion, and plant oil slicks acquired in the wind speed range from 4 to 8 m/s and incidence angles from 30 degrees to 50 degrees are analyzed to yield new insights into the attenuation of short waves and breaking waves by surface slicks in real conditions. To provide a direct quantitative assessment of the surface wave damping, the measurements are decomposed into polarization difference (PD), polarization ratio (PR), nonpolarized (NP), and cross-polarized (CP) components. The PD signals relate to the extent of Bragg damping in the slick areas, over which the PR is systematically higher than over the ambient sea surface. Attenuation of the breaking waves is revealed to affect both the CP and the NP signals, with distinct but weaker contrasts compared to that of the PD. A revised physical model description is proposed to provide consistent interpretation of the polarized and NP signals. The results suggest that the different slick types and look-alikes can be efficiently discriminated and classified.
Tipo: | Text
Idioma: | Inglês

Identificador:

https://archimer.ifremer.fr/doc/00363/47460/47484.pdf

DOI:10.1109/JSTARS.2016.2587840

https://archimer.ifremer.fr/doc/00363/47460/

Editor: | Ieee-inst Electrical Electronics Engineers Inc
Relação: | info:eu-repo/grantAgreement/EC/FP7/263246/EU//SEAU
Formato: | application/pdf
Fonte: | Ieee Journal Of Selected Topics In Applied Earth Observations And Remote Sensing (1939-1404) (Ieee-inst Electrical Electronics Engineers Inc), 2016-11 , Vol. 9 , N. 11 , P. 4929-4940

Fonte:

2016 IEEE. Personal use is permitted, but republication/redistribution requires IEEE permission.

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