Tenuous Correlation between Snow Depth or Sea Ice Thickness and C- or X-Band Backscattering in Nunavik Fjords of the Hudson Strait

Remote Sensing

Monique Bernier¹  Saeid Homayouni¹  Yves Gauthier¹  Jérome Simon¹  Sophie Dufour-Beauséjour¹  Anna Wendleder²  Achim Roth²  Juupi Tuniq³  Véronique Gilbert⁴ 

[1] Centre Eau Terre Environnement, Institut National de la Recherche Scientifique (INRS), Quebec City, QC G1K 9A9, Canada;German Aerospace Center (DLR), Oberpfaffenhofen, 82234 Weßling, Germany;Hydro-Québec, Salluit, QC J0M 1S0, Canada;Kativik Regional Government, Kuujjuaq, QC J0M 1C0, Canada;

关键词: sea ice;    snow;    remote sensing;    synthetic aperture radar;    Nunavik;    Bayesian linear regression;   

DOI  :  10.3390/rs13040768

来源: DOAJ

【 摘 要 】

Radar penetration in brine-wetted snow-covered sea ice is almost nil, yet reports exist of a correlation between snow depth or ice thickness and SAR parameters. This article presents a description of snow depth and first-year sea ice thickness distributions in three fjords of the Hudson Strait and of their tenuous correlation with SAR backscattering in the C- and X-band. Snow depth and ice thickness were directly measured in three fjords of the Hudson Strait from 2015 to 2018 in April or May. Bayesian linear regression analysis was used to investigate their relationship with RADARSAT-2 (C-band) or TerraSAR-X (X-band). Polarimetric ratios and the Cloude–Pottier decomposition parameters were explored along with the HH, HV and VV bands. Linear correlations were generally no higher than 0.3 except for a special case in May 2018. The co-polarization ratio did not perform better than the backscattering coefficients.

【 授权许可】

Unknown