Seasonal InSAR thaw subsidence and frost heave time series in central and western Spitsbergen, Svalbard

• Main Authors: Rouyet, Line, Liu, Lin, Strand, Sarah Marie, Christiansen, Hanne Hvidtfeldt, Lauknes, Tom Rune, Larsen, Yngvar
• Format: Dataset
• Language: English
• Published: 2021
• Subjects: Permfrost; Active Layer; InSAR; Time series; Ground displacement; Arctic; Svalbard; Adventdalen; Kap; Kapp Linné; Norway; Ny-Ålesund; Ny Ålesund; permafrost; Spitsbergen
• Online Access: https://zenodo.org/record/4775398; https://doi.org/10.5281/zenodo.4775398

We used Sentinel-1 Synthetic Aperture Radar Interferometry (InSAR) to measure the ground surface displacements in the permafrost landscape of Svalbard. The InSAR products document thaw subsidence and frost heave related to the seasonal active layer thawing and freezing in 2017. The displacement time series were used to extract the timing of the seasonal thaw subsidence maxima at the regional scale. We analysed three study areas in central and western Spitsbergen (78–79°N, 11–16°E): Adventdalen (ADV), Kapp Linné (KAP) and Ny-Ålesund (NYA). The dataset consists of one .csv file for each study area, which includes June–November 2017 InSAR displacement time series, the identified subsidence maxima and their corresponding Day of Year (DOY) for all the documented pixels. Details about processing and file attributes are described in the Readme pdf document included in the dataset folder. The study is part of Rouyet's Ph.D. research project FrostInSAR (2017–2021) funded by the Space Research Programme of the Research Council of Norway (grant 263005). The development of the GSAR processing chain and previous research applying InSAR in the Norwegian periglacial environment have been supported by the Norwegian Space Centre, the European Space Agency and the Research Council of Norway. L. Liu was supported by the Hong Kong Research Grants Council (CUHK14305618).