European Ground Motion Service: Basic 2016-present (vector), Europe, yearly, Aug. 2022

The European Ground Motion Service (EGMS), part of the Copernicus Land Monitoring Service, provides consistent, regular, standardised, harmonised, and reliable information on natural and anthropogenic ground motion phenomena across Copernicus Participating States and national borders, with millimetre-level accuracy. This metadata describes the first product level of EGMS: Basic. EGMS Basic delivers InSAR displacement data in the satellite Line-of-Sight (LOS), accompanied by annotated geolocation and quality indicators for each measurement point. It is derived from full-resolution interferometric analysis of Sentinel-1 radar imagery and includes LOS velocity maps for both ascending and descending orbits. Each measurement is referenced to a local point within the processing unit, meaning ground motion values are only meaningful within that unit and cannot be directly compared across adjacent units. EGMS Basic is visualised as a vector map of measurement points, colour-coded by average LOS velocity, and distributed in comma-separated values (CSV) format. Each point includes a displacement time series, representing ground motion values for each Sentinel-1 acquisition over the monitoring period. EGMS Basic is delivered to users on an annual basis, following a five-year moving window update strategy. This means that after the Baseline/first update (2016-2021), the following data periods are available: 2018-2022, 2019-2023 and 2020-2024.