InSAR monitoring of Arctic land fast sea ice deformation using L-band ALOS-2, C-band Radarsat-2 and Sentinel-1

• DOI: 10.5194/tc-2021-18
• Publication Date: 2021-02-06T11:36:57Z
• Authors: Zhaohua Chen; Benoit Montpetit; Sarah Banks; Lori White; Amir Behnamian; Jason Duffe; Jon Pasher
• Keywords: Science; Q; deformation; 0211 other engineering and technologies; 0207 environmental engineering; 02 engineering and technology; ALOS-2; sea ice; InSAR; SBAS; Arctic; 13. Climate action; InSAR; sea ice; SBAS; Arctic; deformation; ALOS-2; Sentinel-1; Radarsat-2

Abstract. Arctic amplification is accelerating changes in sea ice regimes the Canadian with later freeze-up and earlier melt events, adversely affecting wildlife communities that depend on stability of conditions. To monitor both rate impact such change, there a need to accurately measure deformation, an important component for understanding motion polar climate. This paper presents Interferometric Synthetic Aperture Radar (InSAR) monitoring landfast deformation as result thickness measured from draft surface height using C-band Radarsat-2, Sentinel-1 L-band ALOS-2. The small baseline subset (SBAS) approach was explored process time series observations retrieval temporal over winter. Sea (subsidence uplift range −32–57 cm) detected satellite SAR data Cambridge Bay, Nunavut, Canada during winter 2018–2019 found be values corresponding growth (30–62 in-situ profiler. trends InSAR were also consistent along two ground tracks ICESat-2. backscatter corresponded strong correlation coefficient (0.49–0.83). High coherence maintained shorter acquisition interval than due decorrelation.