Combining TerraSAR-X and time-lapse photography for seasonal sea ice monitoring: the case of Deception Bay, Nunavik.

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.

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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.

Type de document:	Article
Mots-clés libres:	annual variation; backscatter; photography; satellite imagery; sea ice; TerraSAR-X; time series
Centre:	Centre Eau Terre Environnement
Date de dépôt:	24 juill. 2020 13:23
Dernière modification:	24 juill. 2020 13:23
URI:	http://espace.inrs.ca/id/eprint/10348

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