ОПТИМИЗАЦИЯ ИДЕНТИФИКАЦИОННОГО МОДЕЛИРОВАНИЯ В СТОХАСТИЧЕСКОМ СПОСОБЕ УЧЕТА РЕЛЬЕФА МЕСТНОСТИ ПРИ ИНТЕРПРЕТАЦИИ АЭРОМАГНИТОРАЗВЕДКИ

Abstract

The results of studies aimed at optimizing the stochastic method of taking into account the terrain when interpreting aeromagnetic survey data are presented. The method is based on the consistent application of the method of empirical mode decomposition and the method of group accounting of arguments The results of a medium-scale aeromagnetic survey conducted in Eastern Siberia were used as actual data. It is shown that the preliminary classification of the studied territory by the nature of the relief and the magnetic field strength allows us to determine the components of the magnetic field that correlate with the relief within the selected classes. To assess the quality of correlation dependencies, the ratio of the standard deviation of the models to the variance of the magnetic field amplitudes of the analyzed frequency component were used. This allows us to compare models with different statistical characteristics of the anomalous magnetic field and divide the components into correlated and uncorrelated with the terrain. The results obtained confirm the possibility of the existence of strong correlational relationships between the magnetic field and the relief in a certain range of spatial frequencies and offer specific methodological methods for applying this stochastic approach to reducing the magnetic field in the areas of the development of platobasalts.