Comparisons of Velocity and Acceleration Earthquake Records as a Quality Assessment Tool for European Co-Located Seismic Stations

Abstract

This contribution provides an overview of the procedure being collaboratively developed within ORFEUS to complement the quality control strategies of the RRSM (Rapid Raw Strong Motion) and ESM (Engineering Strong Motion) databases with systematic comparisons of the earthquake data recorded at seismic stations with co-located strong-motion and weak-motion instruments in Europe. The analyses allow: (i) detecting anomalies in both waveform data and station metadata; (ii) refining automatic & manual waveform processing; (iii) enhancing usage of velocity records in ’strong-motion’ databases. We aim at community feedback on the proposed strategy to inform the preparation of free and open-source software to perform systematic and on-demand analyses of the data from co-located instruments.