Efficiency of the Seismological Network in the North Caucasusстатья
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Дата последнего поиска статьи во внешних источниках: 10 февраля 2021 г.
Аннотация:The existing network of seismic stations in the North Caucasus consists of 37 instruments, but they are not evenly distributed on the territory. In general, the North Caucasian seismological network is quite effective. But different points in the region, earthquakes of different minimum energy classes and with different accuracy are recorded. In order for the observation system to record events occurring at different points in the North Caucasus, with the same accuracy and one minimum energy class, it is necessary that the seismic stations of the system are located more evenly throughout the territory, that is, the observation system must have an optimal configuration.The calculation of the minimum energy classes for the optimal seismological network of the North Caucasus from 32 seismic stations shows that with magnification in the stations of 30 thousand, such a network, as can be clearly seen from Figure 7, confidently records earthquakes of energy class 8.5 and more throughout the North Caucasus, which corresponds to magnitude 2.5. Moreover, the position of seismic stations of the optimal network in the North Caucasus is determined accurate to a parallel shift and arbitrary rotation of the entire observation system.Error values in determining the coordinates of earthquake epicenters in latitude (dj) (km) and in longitude (dl) (km) within an optimal network do not exceed 0.5 km. The error values in determining the depths of the earthquake sources (H) (km) in the center of such a network do not exceed 0.6 km, and throughout the Northern Caucasus does not exceed 1.0 km.