Abstrac—

The existing network of seismic stations in the North Caucasus consists of 37 instruments, but they are not evenly distributed on the territory. In this paper, we evaluated the effectiveness of this network, calculated and constructed maps of the distribution over the territory of the completeness of the energy class of recorded seismic events, and the error in determining the coordinates of their hypocenters. In general, the North Caucasian seismological network is quite effective. At different points in the region, earthquakes of different minimum energy classes and with different accuracy are recorded. In order for the observing system to record events occurring in different parts of the North Caucasus with the same accuracy and one minimum energy class, it is necessary that the seismic stations of the system be located more evenly throughout the territory; i.e., the observing system must have an optimal configuration. This optimal configuration was calculated, and the characteristics of the real and optimal networks were compared. Calculation of the minimum energy classes for the optimal magnification seismological network of the North Caucasus consisting of 32 seismic stations shows that with an increase of stations to 30 000, such a network throughout the territory of the North Caucasus confidently detects earthquakes of energy class 8.5 or greater, which corresponds to a magnitude of 2.5. At the same time, 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 monitoring system. The error in determining the coordinates of earthquake epicenters in latitude and in longitude within the optimal network does not exceed 0.5 km. The error in determining the depths of earthquake sources in the center of such a network does not exceed 0.6 km, and throughout the territory of the North Caucasus it does not exceed 1.0 km.

中文翻译：

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北高加索地区地震台网的效率

抽象-

北高加索地区现有的地震台网由37台仪器组成，但在该地区分布不均。在本文中，我们评估了该网络的有效性，计算并构造了已记录地震事件能级完整性的分布图，以及确定震源坐标的误差。总的来说，北高加索地震网络是相当有效的。在该区域的不同点，记录了不同最小能量等级和不同精度的地震。为了使观测系统以相同的精度和一个最小的能量等级记录北高加索地区不同地区发生的事件，该系统的地震台站必须在整个领土上更均匀地放置；也就是说，观测系统必须具有最佳配置。计算出该最佳配置，并比较了实际网络和最佳网络的特征。通过计算由32个地震台组成的北高加索地区最佳放大地震学网络的最小能量等级，可以看出，随着台站数量增加到3万个，整个北高加索地区的此类网络自信地探测到能量等级8.5或7.5的地震。更大，对应于2.5的大小。同时，确定了北高加索地区最佳网络地震台站的位置，使其精确到整个监控系统的平行移动和任意旋转。在最佳网络中确定地震震中坐标的纬度和经度的误差不超过0.5 km。确定此类网络中心的震源深度的误差不超过0.6 km，在北高加索地区，误差不超过1.0 km。