EGU General Assembly 2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

A first appraisal of the European Ground Motion Service

Lorenzo Solari1, Michele Crosetto1, Joanna Balasis-Levinsen2, Luke Bateson3, Nicola Casagli4, Valerio Comerci5, Luca Guerrieri5, Michaela Frei6, Marek Mróz7, Dag Anders Moldestad8, Anneleen Oyen9, and Henrik Steen Andersen10
Lorenzo Solari et al.
  • 1Centre Tecnològic Telecomunicacions Catalunya, Geomatics, Spain (
  • 2Agency for Data Supply and Efficiency, Denmark (
  • 3British Geological Survey, UK (
  • 4Department of Earth Sciences, University of Firenze, Italy (
  • 5Istituto Superiore per la Protezione e la Ricerca Ambientale, Italy (,
  • 6Bundesanstalt für Geowissenschaften und Rohstoffe, Germany (
  • 7Institute of Geodesy and Civil Engineering, University of Warmia and Mazury in Olsztyn, Poland (
  • 8Norsk Romsenter, Norway (
  • 9Rijkswaterstaat, Ministerie van Infrastructuur en Waterstaat, The Netherlands (
  • 10European Environment Agency (EEA), Denmark (

Satellite interferometry (InSAR) is a reliable and proven technique to monitor and map geohazards over wide areas. In the last years, InSAR is increasingly becoming an everyday tool for geoscientific and applicative analyses; many different users, ranging from academia to the industry, work and rely on InSAR products.

The European Ground Motion Service (EGMS) was conceived and is being implemented as a direct response to growing user needs. The EGMS is implemented under the responsibility of the European Environment Agency in the frame of the Copernicus Programme. The EGMS products are part of the portfolio of the Copernicus Land Monitoring Service. The EGMS provides consistent, regular, standardized, harmonized, and reliable information regarding natural and anthropogenic ground motion phenomena over the Copernicus Participating States and across national borders, with millimeter accuracy. 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 (a velocity model derived from thousands of global navigation satellite systems time series is used for calibration 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. The products are generated from the multi-temporal interferometric analysis of Sentinel-1 images in ascending and descending orbit at full resolution.  The data is available and accessible to all and free of charge through a dedicated viewer and download interface.

The accessibility to EGMS accurate and validated interferometric data offers the geoscientific and professional communities the opportunity to study geohazards at the European level, including difficult-to-reach areas or where the availability of ground motion data has so far been scarce or null. The EGMS provides, for example, information useful for the identification and monitoring of slow-moving landslides, natural subsidence, or subsidence due to groundwater exploitation or underground mining activities and volcanic unrest. In addition, the Service establishes a baseline for studies dedicated to localized deformation affecting buildings and infrastructure in general. This presentation will offer a first evaluation of the EGMS products under geoscientific aspects. Case studies from different European environmental contexts will be shown to demonstrate how the EGMS products can be successfully used for geohazards-related studies.

How to cite: Solari, L., Crosetto, M., Balasis-Levinsen, J., Bateson, L., Casagli, N., Comerci, V., Guerrieri, L., Frei, M., Mróz, M., Moldestad, D. A., Oyen, A., and Andersen, H. S.: A first appraisal of the European Ground Motion Service, EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-6040,, 2022.

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