Investigation of the interrelationship between changes and redistribution of angular momentum of the Earth, the Antarctic tectonic plate, the atmosphere, and the ocean.
Received: March 05, 2018
Revised: June 11, 2018
Accepted: June 25, 2018
Department of Higher Geodesy and Astronomy of Lviv Polytechnic National University
Lviv Polytechnic National University
Lviv Polytechnic National University

Purpose. The purpose of this work is elaboration of the results of long-term GNSS-observations at permanent stations located on the Antarctic tectonic plate; the determination of the change in its rotational parameters and angular momentum, the calculation of the angular momentum of the Earth, the oceanic and atmospheric masses, and the establishment of the interrelationship between these parameters. Methods. The work represents an improved algorithm for determining the parameters of the Euler pole and the angular velocity of the tectonic plate, taking into account the continuity and unevenness of time series of daily solutions of the spatial location of permanent GNSS-stations. Results. According to the results of daily solutions of 28 permanent GNSS-stations in Antarctica for the period (1996–2014), the average position of Euler pole, the angular velocity of the plate, and their annual changes are determined. The annual parameters of the tensor of inertia and angular momentum of the Antarctic tectonic plate are determined. Using the data of the Earth’s rotation service and geophysical observations, the annual changes in the angular momentum of the Earth, the tensors of moment of inertia, and angular momentum of oceanic and atmospheric masses for the period (1996–2014) have been calculated. Scientific novelty. It is established that during the whole observation period the increase of the angular momentum of the Antarctic tectonic plate corresponds to the decrease of the angular momentum of the Earth and the atmosphere. This indicates the conservation of angular momentum. The increases of the angular momentum of Antarctic tectonic plate corresponds to the increases of the angular momentum of the ocean. Explanation of this interrelationship requires additional research.

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