GDM (Ground Deformation Monitoring) service is supported by CNRS and based on PEPS, a CNES infrastructure hosting Sentinels products. The service is developed in the framework of ForM@Ter, a French data and service centre focusing on solid Earth. GDM will offer on-demand computation services on radar and optical imagery to produce stacks of co-registered interferograms and horizontal deformation maps. This service is aimed at serving a wide panel of scientific fields, such as earthquake cycle studies, tectonics, volcanism, erosion dynamics, or anthropogenic deformations.


    Ground Deformation Monitoring service: processing services and example of data products

    GDM will propose two processing services:

    The first available service will be focused on SAR data:

    • GDM-SAR is based on the New Small temporal and spatial BASelines (NSBAS, M.-P. Marie-Pierre Doin, F.Lodge, S. Guillaso, R. Jolivet, C. Lasserre, G. Ducret, and R. Grandin (2011). It will process Copernicus Sentinel-1 data to provide stacks of co-registered interferograms.

    In a next stage, the second service will be focused on optical data:

    • GDM-optic will process Copernicus Sentinel-2 data to provide horizontal surface deformation maps. (Vallage A., Klinger Y., Grandin R., Bhat H.S., Pierrot-Deseilligny M., Inelastic surface deformation during the 2013 Mw7.7 Balochistan, Pakistan, earthquake. (2015); Vallage A., Klinger Y., Lacassin R., Delorme A., PierrotDeseilligny M., Geological structures control on earthquake ruptures: the Mw7.7, 2013 Balochistan earthquake, Pakistan. (2016).