First look at the European Ground Motion Service products

Kurzfassung

The European Ground Motion Service (EGMS) is the most recent addition to the product portfolio of the Copernicus Land Monitoring Service. The EGMS is funded by the European Commission in the frame of the Copernicus Programme and it is implemented under the responsibility of the European Environment Agency. The Service provides consistent, regular, standardized, harmonised and reliable information regarding natural and anthropogenic ground motion phenomena over the Copernicus Participating States and across national borders, with millimetre accuracy. The EGMS is based on the multi-temporal interferometric analysis of Sentinel-1 radar images at full resolution. Global navigation satellite systems (GNSS) data are used as calibration of the interferometric measurements. The EGMS distributes three levels of products: (i) basic, i.e. line of sight (LOS) velocity maps in ascending and descending orbits referred to a local reference point; (ii) calibrated, i.e. LOS velocity maps calibrated with a geodetic reference network so that measurements are no longer relative to a local reference point and (iii) ortho, i.e. components of motion (horizontal and vertical) anchored to the reference geodetic network. Data are available and accessible for all and for free through a dedicated viewer and download interface. EGMS is an unprecedented opportunity to study geohazards and human-induced deformation over Europe, such as slow-moving landslides, subsidence due to groundwater exploitation or underground mining activities, volcanic unrests, and many more. These data can serve a wide spectrum of users interested in ground motion data for geohazards mapping and monitoring. This presentation will offer a first look at the products distributed by EGMS through relevant case studies in different environmental contexts of Europe. Landslides along the Alpine Arc and in the rocky slopes of Scandinavian fjords, subsidence in alluvial plains in Spain and Italy, mining-induced deformation in Poland and Germany are some of the examples that will be presented. The interferometric data will be analyzed to provide an interpretation under geoscientific aspects of the measured ground motion and to show how the EGMS products can be successfully used for geohazards-related studies.