The study of the spectral characteristics of noise and the assessment of its influence on the possibility of recording seismic events by the Karelian seismological network

Abstract

The work is devoted to assessing the impact of noise on the seismic record, which is necessary for the reliable isolation of seismic events of varying strength and distance. The study of the possibility of recording seismic events of the Karelian seismological network is based on the construction of graphs of the power spectral density of the noise (PSD) relative for Peterson’s model curves. Daily and seasonal differences of noise spectra are described for each seismic station. All components of the Karelian seismic stations are located within the Peterson model curves of high and low noise level, with the exception of the horizontal components of the PAAN station, other stations correspond to the tasks of seismic control of Karelia. According to the SPM noise charts for one year seismic stations are distributed by increasing noise level: "Petrozavodsk", "Pitkyaranta", "Kostomuksha".