Science and technological developments: article

Аnnotation: A comprehensive methodology has been developed for high-quality preparation of long-term monitoring data for their processing and analysis. It is shown that the application of this methodology is a necessary step in the processing of any long-term monitoring data in real conditions. The practical significance of the development is significantly enhanced by the fact that the algorithms of the methodology are implemented as a software product that is available for wide use. As an experimental basis for the development, we used the data of geoelectric monitoring by the VES method with the possibility of tracking variations in the electrical resistivity at different depths, as well as the results of operational downhole resistivity measurements, electromagnetic, geoacoustic and inclinomeric observations. Two models are proposed for describing seasonal variations in the electrical resistivity of rocks in a well in the bypass filtration zone of the Chirkey Hydropower Dam in Dagestan: a model of average seasonal functions, which assumes strict constancy of the seasonal course in different years, and an adaptive model that allows changing the amplitude of seasonal effects from year to year. Time series of data are constructed filtered out from seasonal changes. A comprehensive methodology for describing and filtering seasonal effects in monitoring data has also been successfully applied to analyze observational data by other geophysical methods, in particular with inclinometric, geoacoustic and electromagnetic monitoring in different regions of the country. It is concluded that for an accurate assessment of the seasonal course, special data preparation is necessary, taking into account the features of the series.