GEODYNAMIC PREREQUISITES FOR DEFORMATIONAL DISPLACEMENTS OF THE EARTH’S SURFACE ON THE CASPIAN PLATEAU
Authors
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G.M. Otarbayeva
Al-Farabi Кazakh National University, Almaty, Kazakhstan
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D.Zh. Artykbaev
M. Auezov South Kazakhstan Research University, Shymkent, Kazakhstan
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Zh. Berdaliyeva
Kazakh National Academy of Architecture and Civil Engineering, Almaty, Kazakhstan
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M.T. Kuttybay
M. Auezov South Kazakhstan Research University, Shymkent, Kazakhstan
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Zh.A. Usenkulov
M. Auezov South Kazakhstan Research University, Shymkent, Kazakhstan
DOI:
https://doi.org/10.55956/RFEP5134Keywords:
geodynamics, deformation displacements, Caspian Lowland Plateau, salt tectonics, Earth’s surface, InSAR, GNSS, engineering–geodetic monitoring, sedimentary cover, geodynamic risksAbstract
The article examines the geodynamic prerequisites for the formation of modern deformation displacements of the Earth’s surface within the territory of the Caspian Lowland Plateau. The study is based on an integrated analysis of geological, structural-tectonic, and engineering-geodetic data that characterize the spatial and temporal features of deformation processes. For the quantitative assessment of deformation displacements, data from satellite radar interferometry (InSAR) and Global Navigation Satellite Systems (GNSS) were used, providing millimeter-level accuracy in determining vertical and horizontal displacements. The analysis of deformation velocity maps and time series revealed pronounced spatial heterogeneity of the deformation field and the presence of stable downward trends in vertical displacements, indicating progressive subsidence of individual surface areas. It was established that the maximum deformation rates are confined to zones of salt-dome development and tectonic disturbances and are further intensified under the influence of external natural and anthropogenic factors. The obtained results confirm the effectiveness of the integrated application of InSAR and GNSS methods for monitoring slow geodynamic processes and can be used in geodynamic risk assessment, as well as in the design and operation of engineering structures and oil and gas infrastructure facilities within the Caspian Lowland Plateau.
