Assessment of the Caucasus Seismological Network Effectivenessстатья
Информация о цитировании статьи получена из
Web of Science
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Дата последнего поиска статьи во внешних источниках: 18 сентября 2019 г.
Аннотация:To solve multiple geological and geophysical problems, in particular, the forecast of strong earthquakes,
seismic zoning, and earthquake-resistant engineering, it is necessary to have reliable data on the distribution
of earthquake hypocenters in the study area. In turn, the completeness of data on distribution of
earthquake hypocenters and the accuracy of their determination largely depends on effectiveness of the observational
system. This article assesses the effectiveness of the Caucasian seismological network consisting of
258 stations. The effectiveness of the seismological network means network ability to record seismic events
with minimal magnitudes at certain epicentral distances and to provide, depending on hypocentral location
of an earthquake, determination of the main earthquake parameters (time in the source and coordinates of
hypocenters) with minimal errors. Calculation of the minimum energy classes (threshold) for the seismological
network shows that if all Caucasus stations would have magnification of 30000, the network would confidently
record earthquakes of the 9th energy class and higher, which corresponds to a magnitude of 2.8. The
errors in determination of epicentral coordinates of earthquakes on latitude and longitude do not exceed
0.4 km in the center of the network, and 1.0 km in the network periphery. The values of errors in determining
depths of earthquake sources by the seismological network do not exceed 1.0 km in its center, and 10 km in
the entire Caucasus region.