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The paper presents a new approach to the description of earthquake seismic signals based on the nonorthogonal amplitude-frequency analysis of the smoothed signals (NAFASS) method. The authors consider an example of the processing of one of earthquake’s records that occurred in the Tien Shan territory. The earthquake signals were recorded at the Karagai-Bulak seismic station, which is a part of the digital telemetry network KNET, located in the Northern Tien Shan area. The paper presents the results from the first stage of creation of a collection of blow-like signals with beatings (such as earthquakes) «fingerprints», which will provide additional information characterizing the modern geodynamic processes of the Tien Shan. Such analysis of seismic signals for the Tien Shan earthquakes has not been carried out yet. The authors hope that using the reduced fractal model on the base of NAFASS method will help avoid extensive calculations of standard methods and directly construct a quantitative description of earthquakes in the terms of a common set of fitting parameters by creating a «waveform portrait» of a seismic event.

The article discusses the methodological issues of registration of a seismic wavefield using a three-component gradient system and data processing aimed at revealing an endogenous seismic field. The processes of rock destruction cause seismic emission effects and create specific wave pictures of the elastic field in a deformable medium, which can be analyzed during geophysical monitoring. Revealing the endogenous sources of elastic waves using the proposed experiment allows us to observe the activation of the Tien Shan lithosphere. The authors provide an estimation of the energy characteristics of the seismic field generated by endogenous sources. A possible causal relationship between lunar-solar tides and the activation of endogenous sources is analyzed. The basics of the method for studying irreversible deformations by measuring the seismic field on the Earth’s surface using a gradient system have been developed. As an example, we used the data obtained at the Chon-Kurchak observation point of the Research Station of the Russian Academy of Sciences in Bishkek at the Bishkek Geodynamic Proving Ground.