Implementation of new generation of tools into GNSS permanent reference network data processing to help achieve a more accurate assessment of the impact of Vrancea earthquakes, Romania

The main topic is always seismology at the General Assembly of the European Seismological Commission (GA ESC). This year, the 36th Assembly was held in Valletta, Malta, from September 2nd to the 7th , 2018. The event was organized by the Department of Geosciences of the University of Malta, and it brought a new approach: a presentation about the work done by EPOS TCS GNSS Data and Products.

New generation of tools – Also representing EPOS TCS GNSS Data and Products, Eduard Nastase and Alexandra Muntean presented results obtained in 2018 following the implementation of the new generation of tools into GNSS permanent reference network data processing in help for a more accurate assessment of the Vrancea earthquakes impact.

“The involvement in EPOS-IP project as member of GNSS Data and Products Working Group helps us evolve in the same direction, test and implement GLASS software package for the dissemination of GNSS data and dedicated products (time-series, velocities and strain-rates – to be created using state-of-the-art methodologies) for a better understanding of different Solid Earth processes in European region”, states Nastase.

PDF iconImplementation of new generation of tools into GNSS permanent reference network data processing to help achieve a more accurate assessment of the impact of Vrancea earthquakes, Romania

Developments on the EPOS-IP strain rate product

The main topic is always seismology at the General Assembly of the European Seismological Commission (GA ESC). This year, the 36th Assembly was held in Valletta, Malta, from September 2nd to the 7th , 2018. The event was organized by the Department of Geosciences of the University of Malta, and it brought a new approach: a presentation about the work done by EPOS TCS GNSS Data and Products.

Athanassios Ganas (NOA), an EPOS TCS GNSS member, introduced this TCS by presenting for the very first time the preliminary product which is the strain rate map of western Eurasia. “In this contribution, were presented preliminary results from 452 permanent European GNSS stations, operating until 2017 and processed at UGA-CNRS (Université Grenoble Alpes, Centre National de la Recherche Scientifique)”, says Ganas.

Strain rate field – According to him, to calculate the strain rate field, they used two open-source algorithms recommended by EPOS-IP, namely the VISR (Velocity Interpolation for Strain Rate) algorithm (introduced by Shen et al., 2015) and STIB (Strain Tensor from Inversion of Baselines), developed by Masson et al., (2014) as well as the SSPX software suite (Cardozo and Allmendinger, 2009).

PDF iconDevelopments on the EPOS-IP Pan-European strain rate product