Savchyn I. Differentiation of the kinematics of tectonic structures based on GNSS measurements

Українська версія

Thesis for the degree of Doctor of Science (DSc)

State registration number

0524U000348

Thesis Registration Form

0524U000348.pdf

Applicant for

Specialization

  • 05.24.01 - Геодезія та картографія

17-10-2024

Specialized Academic Board

Д 35.052.12

Lviv Polytechnic National University

Essay

The dissertation analyzes studies on the differentiation of spatial movements of tectonic structures on the basis of global navigation satellite systems (GNSS) data. Methods of studying data of GNSS measurements have been worked out, their advantages and disadvantages have been determined. An analysis of the use of GNSS data to create models of recent movements of tectonic plates, as well as deformations of the earth's surface, is presented. As part of the dissertation, the author has improved the methodology for determining recent rotational poles of tectonic plates based on the study of time series of daily solutions of permanent GNSS stations, which increases the accuracy of determination by taking into account the continuity and uniformity of data distribution during observations. Testing of the improved method was performed on the example of determining the rotational poles of the main tectonic plates. It is confirmed that this technique provides an improvement in the accuracy of determining rotational poles by an average of 19% compared to NNR-MORVEL56, 70% compared to ITRF2000 and 11% compared to ITRF2014. Also, the improved technique provides identical accuracy with ITRF2020. Using this technique, the components of horizontal movements velocity of 3169 permanent GNSS stations located on 7 large, 7 medium and 3 microplates for the period 2002–2021 in the ITRF2014/IGS14 system were determined. The accuracy of determining the component vectors of horizontal movements is within 0.9–6.4 mm and averages 10–15% of the vector length. In the dissertation the author developed a methodology for determining the recent values of the dynamic parameters of tectonic plates based on the study of time series of daily solutions of permanent GNSS stations, as well as information on the thickness and distribution of the density of the earth's crust layers, obtained from the CRUST1.0 model. Testing of the developed technique is performed on the example of determining the moment of inertia, angular momentum, as well as the kinetic energy of the main tectonic plates. A significant diversity in the moment of inertia, angular momentum and kinetic energies between different tectonic plates has been identified. Using the developed method makes it possible to accurately determine the dynamic parameters within 5.5% of their value. Analyze of these parameters confirmed that the Pacific and Australian tectonic plates actually set the recent movement dynamics of main tectonic plates. In the work also were conducted a space-time analysis of the interconnections between the change in the rotational and dynamic parameters of large tectonic plates and the uneven rotation of the Earth. Changes to these parameters are confirmed to be very different. The interconnections between their changes were also revealed. It is determined that the increase in the angular velocity of the Earth rotation slows down the movement of the Antarctic tectonic plate, which moves in the opposite direction to the Earth rotation and accelerates the movement of the Pacific tectonic plate, which moves in the direction of the Earth rotation. It is confirmed that the dynamics of angular momentum and kinetic energy of large tectonic plates is greater than the dynamics of the conditional angular momentum and the conditional kinetic energy of the Earth. That is the dynamics of large tectonic plates are mutually compensated to keep the conditional angular momentum and the conditional kinetic energy of the Earth constant. However, it is obvious that these dynamics is not a determining factor of such compensation, since tectonic plates occupy only 2–3% of the total volume of the Earth, and other, much larger in volume of the Earth's shell (core, mantle, etc.) also affect the change in these parameters. As part of the dissertation, the author improved the methodology for determining deformation parameters based on the study of time series of daily solutions of permanent GNSS stations, taking into account the seasonality of deformation processes. Testing of the improved method was carried out on the example of determining the deformation parameters of the Antarctic tectonic plate and the African tectonic plate system.

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Research papers

Savchyn, I., & Vaskovets, S. (2018). Local geodynamics of the territory of Dniester pumped storage power plant. Acta Geodyn. Geomater, 15(1), 189, 41–46, https://doi.org/10.13168/AGG.2018.0002

Savchyn, I., & Pronyshyn, R. (2020). Differentiation of recent local geodynamic and seismic processes of technogenic-loaded territories based on the example of Dnister Hydro Power Complex (Ukraine). Geodesy and Geodynamics, 11(5), 391-400. https://doi.org/10.1016/j.geog.2020.06.001

Savchyn, I., Brusak, I., & Tretyak, K. (2023). Analysis of recent Antarctic plate kinematics based on GNSS data. Geodesy and Geodynamics. 14(2). 99-110. https://doi.org/10.1016/j.geog.2022.08.004

Tretyak, K., Bisovetskyi, Yu., Savchyn, I., Korlyatovych, T., Chernobyl, O, & Kukhtarov, S. (2023). Monitoring of spatial displacements and deformation of hydraulic structures of hydroelectric power plants of the Dnipro and Dnister cascades (Ukraine), Journal of Applied Geodesy., vol. 16, no. 4, 2022, pp. 351-360. https://doi.org/10.1515/jag-2023-0021

Savchyn, I., Tretyak, K., Hlotov, V., Shylo, Y., Bubniak, I., Golubinka, I., & Nikulishyn, V. (2021). Recent local geodynamic processes in the Penola Strait—Lemaire Channel fault area (West Antarctica). Acta Geodynamica et Geomaterialia, 18(2), 202, 253–265, 2021. https://doi.org/10.13168/AGG.2021.0018

Savchyn, I. (2022). Establishing the correlation between changes of absolute rotation poles of major tectonic plates based on continuous GNSS stations data, Acta Geodyn. Geomater., 19, No. 2 (206), 167–176, 2022. https://doi.org/10.13168/AGG.2022.0006

Savchyn, I. (2023). Analysis of recent African tectonic plate system kinematics based on GNSS data, Acta Geodyn. Geomater., 20, No. 2 (210), 19–28, 2022. https://doi.org/10.13168/AGG.2023.0003

Zyhar, A., Savchyn, I., Yushchenko, Y., & Pasichnyk, M. (2021). Analysis of inclinometric observations and prediction of soils deformations in the area of the Dnister PSPP, Geodynamics, 1(30), pp. 17-24, https://doi.org/10.23939/jgd2021.01.017

Savchyn, І., Otruba, Y., & Tretyak, K. (2021). The first Ukrainian permanent GNSS station in Antarctica: processing and analysis of observation data. Ukrainian Antarctic journal, (2), 3-11. https://doi.org/10.33275/1727-7485.2.2021.674

Savchyn, I. (2022). Determination of the recent rotation poles of the main tectonic plates on the base of GNSS data, Geodynamics, 2(33), pp. 17-27, https://doi.org/10.23939/jgd2022.02.017

Savchyn, І., & Tretyak, K. (2023). Tectonic plates moment of inertia and angular momentum determination: the case of the Antarctic plate. Ukrainian Antarctic Journal, 21(1), 13–23. https://doi.org/10.33275/1727-7485.1.2023.704

Ломпас, О. В., Яхторович, Р. І., & Савчин, І. Р. (2016). Дослідження добового руху ГНСС-станції BRGN. Геодинаміка. І(20), с.21-31, https://doi.org/10.23939/JGD2016.01.021

Савчин, І., (2022). Визначення сучасних ротаційних параметрів Євразійської плити на основі ГНСС-даних. Сучасні досягнення геодезичної науки та виробництва, 2(44), c.42-48 https://doi.org/1819-1339-2-44-42-48

Zyhar, A., Yushchenko, Y. & Savchyn, I. (2023). A study of the influence of water level fluctuations on the geodynamic situation in the natural and technical geosystem of the Dniester HPP and PSPP cascade, Geodesy, Cartography, and Aerial Photography, (97), pp.24-31, https://doi.org/10.23939/istcgcap2023.97.024

Savchyn, I., & Zyhar, A. (2020, December). Analysis and interpretations of recent local vertical movements of Dnister PSPP territory determined from precise levelling. In International Conference of Young Professionals «GeoTerrace-2020» (Vol. 2020, No. 1, pp. 1-5). https://doi.org/10.3997/2214-4609.20205702

Savchyn, I., Tretyak, K., Marusazh, K., & Korliatovych, T. (2021, October). Processing and analysis of measurement results of the Ukrainian GNSS station ASAV (Argentina Islands, West Antarctica). In International Conference of Young Professionals «GeoTerrace-2021» (Vol. 2021, No. 1, pp. 1-5. https://doi.org/10.3997/2214-4609.20215K3032

Zyhar, A., Savchyn, I., Yushchenko, Y., & Zakrevskyi, O. (2021, October). Evaluation of changes in rock characteristics based on analysis and interpretation of seismicacoustic observations in the area of the natural and technical system of Dnister PSPP. In International Conference of Young Professionals «GeoTerrace-2021» (Vol. 2021, No. 1, pp. 1-5). https://doi.org/10.3997/2214-4609.20215K3008

Savchyn, I. (2022, November). Migration of Average Annual Rotation Poles of Antarctic Plate during 1995-2021 by GNSS Data. In 16th International Conference Monitoring of Geological Processes and Ecological Condition of the Environment (Vol. 2022, No. 1, pp. 1-5). EAGE Publications BV. https://doi.org/10.3997/2214-4609.2022580045

Savchyn, I., & Bilashuk, A. (2023, October). Differentiation of recent geodynamic processes within the Carpathian Mountains based on GNSS data. In International Conference of Young Professionals «GeoTerrace-2023» (Vol. 2023, No. 1, pp. 1-5). European Association of Geoscientists & Engineers. https://doi.org/10.3997/2214-4609.2023510011

Savchyn, I., Vovk, A., & Vaskovets, S. (2016, November). Research of Local Deformation Processes of the Dniester PSPP Territory at 2010–2015. In LEA GAC-2016, pp.123-126

Савчин, І., Вовк, А., & Васьковець, С. (2016, Грудень). Дослідження динаміки горизонтальних рухів території Дністровської ГАЕС за даними ГНСС-спостережень (2004-2015 рр.). В збірнику статей GeoTerrace-2016, с.35-39

Savchyn, I., Romanovskyi, A., & Danyliv, N. (2018, November). Research of horizontal movements of the earth's crust in the archipelago Argentine islands (Antarctica) during period 2003-2018, In International joint forum LEA'2018 & YSTCMT'2018 GAC-2018, pp.37-40

Savchyn, I., Danyliv, N., Zygar, A., & Romanovskyi, A. Research of vertical dynamics of Earth’s surface movements in areas of Dniester PSP., In International joint forum LEA'2018 & YSTCMT'2018 GAC-2018, pp.123-127

Савчин, І., Романовський, А., Данилів, Н. (2018, Грудень). Дослідження горизонтальних рухів земної кори архіпелагу Aргентинські острови (Aнтарктида) впродовж 2003-2018 років. В збірнику статей GeoTerrace-2018, с. 96-99

Савчин, І., Данилів, Н., Зигар, А., Романовський, А., (2018, Грудень). Дослід¬ження динаміки вертикальних рухів земної поверхні в районі Дністровської ГАЕС впродовж 1999-2018 років. В збірнику статей GeoTerrace-2018, с. 5-6

Бахмутов, В., Богілло, В., Митрохин, О., Накалов, Є., Отруба, Ю., Пішняк, Д., Савчин, І., Шило, Є. (2019, Квітень). Геолого-геофізичні дослідження під час сезону у 24-й УАЕ: попередні результати і перспективи. В збірнику статей ІХ Міжнародної антарктичної конференції

Savchyn, I. (2020, August). The field of linear velocities and movements of the Earth's crust in the Penola Strait - Lemaire Channel fault area (West Antarctica). In SCAR OPEN SCIENCE CONFERENCE 2020 (Online), P.40

Savchyn, I., Tretyak, K. (2021, May). Crystal strain analysis in the Penola Strait - Lemaire Channel fault area. In X International Antarctic Conference, pp. 70-71

Savchyn, I. (2021, August). Antarctic Plate absolute rotation poles determination based on continuous GNSS stations data. In 10th SCAR OPEN SCIENCE CONFERENCE (Online), e-Poster, https://virtual.scar2022.org/eposter-detailes.php?token=Mzcz

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