Search

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.

Based on the field depth magnetotelluric measurements performed in the Tien Shan region, examples of the extraction of an electromagnetic field of endogenous origin are considered. The research was based on the following working hypothesis: irreversible rock deformations (cracking (and)) caused by the development of modern geodynamic processes form sources of the electromagnetic field of endogenous origin. The authors have introduced an approach that suggests the electromagnetic field of endogenous origin to be included in the impedance relations in an additive manner, which allows us to separate the electromagnetic field recorded on the surface, according to the position of the sources. The main point of this algorithm is that the known impedance of the lower half-space requires finding the difference between the tangential components of the electromagnetic field registered on the day surface. To implement the algorithm, a data processing programme for magnetotelluric sensing was compiled in order to identify sources of electromagnetic fields of endogenous origin.