PRESENT TECHNIQUES FOR SPATIOTEMPORAL ANALYSIS OF EARTH DEFORMATIONS USING DINSAR AND GNSS: PRESENT TECHNIQUES FOR SPATIOTEMPORAL ANALYSIS OF EARTH DEFORMATIONS USING DINSAR AND GNSS

Vesela  Petrova

doi:10.46687/jsar.v29i1.455

Authors

Vesela Petrova DEPARTMENT OF GEODESY, FACULTY OF TECHNICAL SCIENCES, KONSTANTIN PRESLAVSKY UNIVERSITY OF SHUMEN, SHUMEN 9700,115, UNIVERSITETSKA STR., E-MAIL: v.r.p@abv.bg

DOI:

https://doi.org/10.46687/jsar.v29i1.455

Keywords:

Strain monitoring, InSAR, GNSS, Radar interferometry, Geodynamic processes, Risk management, Dams and landslides, Integrated observations, Spatial analysis

Abstract

One of the significant problems facing Earth sciences is the quantitative description and analysis of the dynamics of the Earth's surface. A key requirement in solving this fundamental question is the precise determination of the displacements and deformations caused by various geodynamic processes of natural or anthropogenic origin.

In recent decades, Earth observation has become widely used in disaster risk management – including preparedness, response, recovery and mitigation. Its role in disaster response is particularly valuable, as it provides critical information for researchers and decision-makers.

Earth observation is the collection of data about the planet through remote sensing technologies, which are often complemented by ground-based surveys. This approach has fundamentally changed the way we perceive the world, enabling timely and accurate mapping and monitoring of phenomena on a large scale.

An established method for continuous monitoring of earth deformations is the use of data from active radar remote sensing. Synthetic Aperture Radar (SAR) provides information that serves as the basis for the construction of interferometric images (IFIs) by quantifying the displacements of the Earth's surface within a specified time interval using the technique of differential radar interferometry (DInSAR) by analysing the phase differences between radar images taken at different times.

Author Biography

Vesela Petrova, DEPARTMENT OF GEODESY, FACULTY OF TECHNICAL SCIENCES, KONSTANTIN PRESLAVSKY UNIVERSITY OF SHUMEN, SHUMEN 9700,115, UNIVERSITETSKA STR., E-MAIL: v.r.p@abv.bg

DEPARTMENT OF GEODESY, FACULTY OF TECHNICAL SCIENCES, KONSTANTIN PRESLAVSKY UNIVERSITY OF SHUMEN, SHUMEN 9700,115, UNIVERSITETSKA STR., E-MAIL: v.r.p@abv.bg

References

Mila Stoyanova Atanasova-Zlatareva, Application of SAR Technology for the Study of Geodynamic Processes in Bulgaria and the Balkan Peninsula, 2024.

Radar Basics – Radar Tutorial.

P. A. Zatman, J. R. Wahr, and E. J. Tamisiea, “Monitoring Earth Deformations: Fundamentals and Applications,” Reviews of Geophysics, vol. 56, no. 3, pp. 450–489, 2018.

R. Bürgmann, M. Gabrysch, and G. L. R. Powell, “Geodynamic Processes and Their Monitoring Using Space Geodesy,” Annual Review of Earth and Planetary Sciences, vol. 45, pp. 261–291, 2017.

F. C. Minchew, R. C. Aster, and T. M. Owen, “High-Resolution InSAR for Monitoring Ground Displacements,” IEEE Transactions on Geoscience and Remote Sensing, vol. 56, no. 4, pp. 2203–2212, 2018.

D. Nikolov, Geodynamics and Tectonics of the Balkan Region, Sofia: Publishing House of the Bulgarian Academy of Sciences, 2010.

Iv. Petrov and Vl. Stoyanov, “Modern Methods for Monitoring Ground Deformations in Bulgaria,” Geoscience and Education, vol. 5, no. 2, pp. 45–53, 2018.

Stoykov E., „Data quality for hydrographic measurements“. Journal scientific and applied research. Vol. 21, Shumen, Konstantin Preslavsky University Press, ISSN: 1314-6289. pp. 26 – 30, 2021.

Stoykov E., „Preliminary processing of satellite measurements“, Yearbook: Technical Sciences. Vol. IX E, Shumen, University Press, pp. 15 - 20, ISSN: 1311-834X, 2019.

Stoykov, E., „Analysis of the evolution of global navigation satellite systems“,Yearbook: Technical Sciences. Vol. VIII E, Shumen, University Press, pp. 119 – 125, ISSN: 1311-834X, 2018.

PRESENT TECHNIQUES FOR SPATIOTEMPORAL ANALYSIS OF EARTH DEFORMATIONS USING DINSAR AND GNSS