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Retrieval of river ice thickness from C-band PolSAR data.


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Mermoz, Stéphane, Allain, Sophie, Bernier, Monique, Pottier, Éric, Van Der Sanden, Joost et Chokmani, Karem (2012). Retrieval of river ice thickness from C-band PolSAR data. In: IEEE International Geoscience and Remote Sensing Symposium - IGARSS 2012, 22-27 juillet 2012, Munich, Allemagne.

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River ice has an important effect on natural processes and human activities in northern countries. Current models for estimating river ice thickness are mostly based on environmental data. They require several inputs and yield only a global estimate of ice thickness for a large heterogeneous area. Attempts have been made intending to retrieve river ice thickness from remote sensing using monopolarized C-band radar data. No reliable maps of ice thickness have been produced. In this paper, the potential of polarimetric synthetic aperture radar (PolSAR) data for estimating river ice thickness is demonstrated, and a river ice thickness retrieval model is proposed. The C-band SAR images used in this paper were acquired by Radarsat-2 in the winter of 2009 over the Saint-François River (Southern Quebec), the Koksoak River (Northern Quebec), and the Mackenzie River (Northwest Territories) in Canada. Field campaigns were carried out to obtain ice thickness validation data at 70 locations. Polarimetric entropy was used to obtain ice thickness estimates. This approach results in spatially distributed ice thickness maps for selected ice types.

Type de document: Document issu d'une conférence ou d'un atelier
Mots-clés libres: polarimetric synthetic aperture radar (PolSAR); river ice; thickness retrieval
Centre: Centre Eau Terre Environnement
Date de dépôt: 09 déc. 2019 21:14
Dernière modification: 10 mai 2021 18:19
URI: https://espace.inrs.ca/id/eprint/4770

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