17th International Conference on Geoinformatics: Theoretical and Applied Aspects, Kyiv, Ukraine, 14 - 17 May 2018, no.1
A method of studying the problems of natural oscillation of a composite sphere is developed. Various variants of the composite sphere are studied considering preliminary deformation. The obtained results are necessary for further improvement of one of the integral criteria (periods of natural oscillations of the Earth caused by the strongest earthquakes) of the reliability of geoinformation.