Seismic Hazard Assessment Based on Instrumental Records of Ground Motion

摘要

Assessment of earthquake hazard to building sites for extraordinarily vulnerable objects is based on prognoses of the seismic potential M_m for all known earthquake source zones and on the empirical functions describing the decay of seismic ground vibration with the epicentre distance. In the seismic-tectonic conditions of the Czech massif no such empirical relation exists because of missing instrumental records of strong earthquakes in the locality and region. Therefore, the application of relations from abroad has been inevitable up to recent years, when some first authentic records were obtained by making use of local seismic networks. This paper deals with testing of the reliability of some formulae known abroad for the conditions of the Czech massif. Testing data are obtained from earthquakes in the near region as well as from mining induced mi-crotremors and rockbursts in the Lubin copper mine.