Dufour-Beauséjour, Sophie; Wendleder, Anna; Gauthier, Yves; Bernier, Monique; Poulin, Jimmy; Gilbert, Véronique; Tuniq, Juupi; Rouleau, Amélie; Roth, Achim
(2020).
Combining TerraSAR-X and time-lapse photography for seasonal sea ice monitoring: the case of Deception Bay, Nunavik.
The Cryosphere
, vol. 14
, nº 5.
p. 1595-1609.
DOI: 10.5194/tc-14-1595-2020.
Résumé
This article presents a case study for the combined use of TerraSAR-X and time-lapse photography time series in order to monitor seasonal sea ice processes in Nunavik's Deception Bay. This area is at the confluence of land use by local Inuit, ice-breaking transport by the mining industry, and climate change. Indeed, Inuit have reported greater interannual variability in seasonal sea ice conditions, including later freeze-up and earlier breakup. Time series covering 2015 to 2018 were acquired for each data source: TerraSAR-X images were acquired every 11 d, and photographs were acquired hourly during the day. We used the combination of the two time series to document spatiotemporal aspects of freeze-up and breakup processes. We also report new X-band backscattering values over newly formed sea ice types. The TerraSAR-X time series further show potential for melt and pond onset.
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