EPN Densification is a joint venture of agencies and institutions from European countries, which operate and/or perform regular processing the data from dense national GNSS networks and submit the results of their data analysis as daily or weekly position SINEX files routinely to EUREF. The primary goal of the Working Group is to realize a continental-scale, homogeneous, high quality position and velocity product in a well defined reference frame, with comparable quality from Greenland to Crete, from Svalbard to Gran Canaria.
To achieve this goal the national GNSS network processing results (daily or weekly position SINEX files) are merged using the EPN as backbone and a multi-year position and velocity solutions, expressed in the latest ITRS/ETRS89 realization are generated. Additionally, to support the station managers and guarantee the reliability of the combination, the station metadata (station naming, site logs) of the participating densification stations is maintained, cross-checked, harmonized in close co-operation with EUREF's M3G service.
The EPN Densification products shall be used - in close cooperation with the EUREF Deformation Models Working Group - to support the ETRS89 realization not only over the stable part of Europe, but also over tectonically deforming areas like the Mediterranean region. The velocity product will be usefull for general and specific tectonic studies, supporting the better understanding of the processes at deforming regions.
The EPN Densification will exploit the huge potential lying in these active GNSS networks both for geodesy and Earth Sciences in general. All the activities of the EPN Densification require efficient cooperation between the data suppliers and the geophysical community. EPND is operating on the best effort basis of all contributing partners, the generated products are freely available for the geosciences community. Beside the well built structure and communication channels of the EPN close co-operations with other communities such as European Plate Observing System (EPOS) and European Ground Motion Service (EGMS) are established and maintained.