SEISMIC STATION LOCATION EFFECTS ON EARTHQUAKE RECORDINGS

Abstract

Broadband sensitive three-component seismometers are installed in modern seismic stations in Slovenia. Basic earthquake parameters are calculated from seismograms recorded by these types of instruments and dynamic phenomena in nature are described that cause earthquakes. In classical mathematical models, it is assumed that no local effects influence the measurements. However, there is always an interaction between the seismometer and seismic station and its vicinity that influences the earthquake recordings. The interaction depends on the frequency, amplitude and incident angle of earthquake waves. This complex interaction is difficult to estimate. Nevertheless, local effects can be observed with additional instruments in various constructions of observation systems, which are installed at different locations close to the observation site.