Brief communication: InSAR Svalbard Ground Motion Service – observing surface displacements in the High Arctic
Marie Bredal, Line Rouyet, Lotte Wendt, Heidi Hindberg, Daniel Stødle, Tom Rune Lauknes, Jelte van Oostveen, Yngvar Larsen, Gökhan Aslan, Emma Hauglin, John Dehls, Anja Sundal, Anna Odh, Dag Anders MoldestadThe InSAR Svalbard Ground Motion Service (GMS) provides open-access surface displacement maps and time series in the Svalbard archipelago, derived from Sentinel-1 Interferometric Synthetic Aperture Radar (InSAR). The service provides seasonal products capturing short-term 2016–2024 displacements and interannual products documenting long-term 2018–2024 velocity trends. InSAR Svalbard covers five areas on Spitsbergen Island (Longyearbyen, Ny-Ålesund, Svea, Hornsund and Kapp Linné). The service consists in a web-based visualisation tool at https://svalbard.insar.no/ (release date: 2 February 2026, last access: 22 September 2026). The products are also distributed at https://doi.org/10.5281/zenodo.18442696 (Bredal et al., 2026a). InSAR Svalbard establishes a foundation for geohazard assessment in Arctic regions and interdisciplinary research on permafrost dynamics, ground stability, and environmental changes.