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TitlePolarimetric RADARSAT-2 for river freeze-up monitoring; preliminary results
Authorvan der Sanden, J JORCID logo; Drouin, HORCID logo
SourceProceedings of PolInSAR, the 5th International workshop on science and applications of SAR polarimetric interferometry; 2011, 8 pages
Alt SeriesEarth Sciences Sector, Contribution Series 20100489
MeetingThe 5th International workshop on science and applications of SAR polarimetry and polarimetric interferometry (POLINSAR 2011); Frascati; IT; January 24-28, 2011
ProvinceNorthwest Territories
NTS106M/09; 106M/10; 106M/15; 106M/16; 106N/12; 106N/13; 107B/02; 107B/03; 107B/06; 107B/07; 107B/10; 107B/11
AreaMackenzie River; Inuvik
Lat/Long WENS-135.0000 -133.5000 68.7500 67.5000
Subjectsgeophysics; remote sensing; rivers; ice; ice conditions; ice thickness; RADARSAT-2
Illustrationsplots; location maps; profiles
ProgramRemote Sensing Science
AbstractRiver ice affects natural processes and human life in northern countries such as Canada. Satellites like RADARSAT-2 offer reliable imaging and sensitivity to structural characteristics of river ice. The study focuses on the Middle Channel of the Mackenzie River at Inuvik, Northwest Territories, Canada. The available data set relates to the 2008 / 2009 winter season and includes a time series of RADARSAT-2 Fine Quad (FQ) Polarisation images as well as a set of ground reference data. The preliminary results show that the RADARSAT-2 FQ images hold important information regarding: the interaction between C-band microwaves and river ice cover, the onset and progress of river freeze-up, the type of ice cover observed, and the thickening of ice cover over the winter season. The ratio of VV over HH backscatter is shown to be a good indicator of the onset of freeze-up. The potential for the application of RADARSAT-2 to the mapping of river ice thickness is compromised by the strong effect of ice structure on the C-band radar return signal.

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