Abstract
Various characteristics of the catalogue obtained from the data of the KNET network, containing the parameters of more than 10,000 earthquakes that occurred from 1994 to 2020, are considered. A statistical analysis of the number of P- and S-waves registered by each station of the network is carried out. The activity of the stations during the localization of earthquakes has been determined. The most active station is AAK. The minimum number of P- and S-waves is recorded at the ULHL station. Statistical analysis of localization errors has been performed. The boundaries of the territory for which the minimum values of errors are observed are determined. The statistical characteristics of earthquakes in terms of magnitude, time, depth are presented. The distribution of the number of earthquakes by different energy classes in time and the spatial distribution of earthquakes by depths: 0-5 km, 5-10 km, 10-15 km and more than 15 km are constructed. The Gutenberg Richter law was used to describe the energy distribution function of earthquakes. A representative sample of the catalogue was determined, which includes events with M ≥ 1.8. The b-value for the directory is 0.88.
Highlights
In 1991, a seismological network KNET was installed on the territory of the Bishkek geodynamic proving ground (BGPG, Northern Tien Shan), which includes 10 digital broadband stations, each of which is equipped with an STS-2 seismological sensor (Fig. 1, triangles)
The processing of KNET data at the Research Station RAS (RS RAS) began in 1995, and it took time to gain experience in the localization of earthquakes, which affected the quality of the catalogue data for 1994-1995, but they can be taken into account when constructing maps of the epicentral location of earthquakes
The Kyrgyz seismological network KNET, established in 1991, allows registering earthquakes occurring in the territory of the Northern and Central Tien Shan
Summary
In 1991, a seismological network KNET was installed on the territory of the Bishkek geodynamic proving ground (BGPG, Northern Tien Shan), which includes 10 digital broadband stations, each of which is equipped with an STS-2 seismological sensor (Fig. 1, triangles). The stations of the KNET network make it possible to register earthquakes that occurred in the territory of the Northern and Central Tien Shan. The stations of the network being on the territory of the BGPG maximally register weak earthquakes occurring here. The purpose of this work is to evaluate various characteristics of the earthquake catalogue
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