M. S. Petrishchev, V. S. Ismagilov, Yu. A. Kopytenko
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引用次数: 0
Abstract
A method for statistical detection of weak ultra-low-frequency (ULF) electromagnetic anomalies of lithospheric origin amid intense anthropogenic noise is proposed. The method is based on the hypothesis that the statistical distribution of ambient electromagnetic noise amplitudes in the ULF range is stationary over time, whereas an additional signal perturbs this distribution. To validate this method, we conducted a numerical experiment with superimposing a synthetic noise signal onto the magnetic data recorded over a 72-day interval from December 2022 to February 2023 at the Tashkent Geodynamic Polygon. The results demonstrate that a persistent shift in the probability distribution mode of the root-mean-square deviations toward larger values serves as a reliable indicator of an electromagnetic disturbance from a remote source. The method was tested and its applicability was demonstrated for an M6.4 earthquake.
期刊介绍：
Izvestiya, Physics of the Solid Earth is an international peer reviewed journal that publishes results of original theoretical and experimental research in relevant areas of the physics of the Earth''s interior and applied geophysics. The journal welcomes manuscripts from all countries in the English or Russian language.
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