Processing and analysis of measurement results of the Ukrainian GNSS station ASAV (Argentina Islands, West Antarctica)

Savchyn, I.; Tretyak, K.; Marusazh, Kh.; Korliatovych, T.

doi:10.3997/2214-4609.20215k3032

Cited by 2 publications

(1 citation statement)

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“…The selection of continuous GNSS stations in this study followed the enhanced criteria proposed by Altamimi et al (2017). Additionally, the study included time series of daily solutions of the ASAV continuous GNSS station, which the authors installed and put into operation near the Ukrainian Antarctic Akademik Vernadsky station between January and April 2019 (Savchyn et al, 2021a;Savchyn et al, 2021b). Figure 2 illustrates the location of the 60 continuous GNSS stations used in this study and their characteristics.…”

Section: ) Moment Of Inertia and Angular Momentum Determinationmentioning

confidence: 99%

Tectonic plates moment of inertia and angular momentum determination: the case of the Antarctic plate

Savchyn,

Tretyak

2023

UAJ

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The main goal of this study is to develop and test an algorithm for determining the moment of inertia and angular momentum of a tectonic plate based on the processing of time series of daily solutions of continuous GNSS (Global Navigation Satellite System) stations. The proposed algorithm consists of four consecutive stages: reformatting data to the internal format; dividing the plate into cells and determining their masses; determining the rotation poles and distances from cells to the poles; calculating the plate's moment of inertia and angular momentum. The algorithm uses freely available time series of daily solutions from continuous GNSS stations or any other data prepared in a similar format. The algorithm is tested for determining the moment of inertia and angular momentum of the Antarctic plate based on the processing of time series of daily solutions of continuous GNSS stations for the period 1995-2021. It is confirmed that the Antarctic Plate's rotation poles, moment of inertia, and angular momentum are dynamic parameters. However, additional calculations and in-depth comprehensive analysis are required to determine the causes of such dynamics. As a result of comparing, the dynamics of changes in the Antarctic Plate's rotation poles partially compensate for the unevenness of the Earth's rotation to keep the angular momentum of the Earth constant.

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Section: ) Moment Of Inertia and Angular Momentum Determinationmentioning

confidence: 99%