seismic moment

Purpose. The purpose of this paper is to show the importance of the additional information to determine the focal mechanisms of earthquakes in the Carpathian region of Ukraine, and also to determine the focal mechanisms and the spectral parameters of recurrent earthquakes. Methodology. The graphic method is proposed to determine the focal mechanisms of earthquakes in the region with a small seismic activity. This method is based on the distribution of the longitudinal P- wave polarities into compressive and extensive zones devised by nodal planes.

Goal: - to analyze the focal parameters of Crimean earthquakes determined from records of analog and digital seismic stations; - to draw a conclusion about the degree of their correspondence and continuity to the properties and regularities received earlier with the use of only analogue equipment. Methodology. We have chosen the earthquakes in the south of  Ukraine registered parallelly by two kinds of seismographs at the “Simferopol” and “Alushta” stations.