Abstract
It is necessary to have reliable data on the distributions of earthquake hypocenters in the study area to solve many geological and geophysical problems, in particular, the forecast of strong earthquakes, seismic zoning, and earthquake-proof construction. In turn, the completeness of the data on the distribution of earthquake hypocenters and the accuracy of their determination largely depends on the effectiveness of the observing system. The efficiency of the modern Carpathian network of seismological observations consisting of 196 stations is estimated in this article. By the effectiveness of the seismological observation network we mean the ability of the network to record events with minimal magnitudes at certain epicentral distances and allowing us to determine its main parameters (origin time and coordinates of hypocenters) with minimal errors depending on the position of the hypocenter of the earthquake. The calculation of the minimum earthquake magnitudes for the Carpathian seismological network shows that if each station has a magnification of 40,000, then the seismological network reliably records earthquakes with a magnitude of 3 or more in the Carpathians. The errors in the determination of the coordinates of epicenters of earthquakes in latitude (δφ) (km) and in longitude (δλ) (km) do not exceed 0.4 km in the center of the network and 1.0 km on the periphery of the network. The values of errors for determining the depths of the earthquake (H) (km) in the center of the network does not exceed 1.0 km and does not exceed 10 km throughout the Carpathian region.
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Burmin, V.Y., Shumlianska, L. Estimation of the effectiveness of the seismological network observations in the Carpathian region. J Seismol 24, 1063–1074 (2020). https://doi.org/10.1007/s10950-020-09916-5
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DOI: https://doi.org/10.1007/s10950-020-09916-5