📄 Abstract
The Tashkent region of Uzbekistan, located within the western Tien Shan, is one of the most seismically active areas of Central Asia. Monitoring crustal deformation is essential for assessing seismic hazard in this densely populated and industrially important area. In this study, we analyzed Global Navigation Satellite System (GNSS) observations from 2018–2024 at permanent and campaign stations across the region. Daily positions were processed using the GAMIT/GLOBK software package and aligned to the ITRF2014 reference frame. Eurasia-fixed velocities were then derived to isolate intra-plate deformation. To overcome the sparse distribution of GNSS sites, we applied the gpsgridder interpolation method implemented in Generic Mapping Tools (GMT), which produces a physically consistent two-dimensional velocity field. The results indicate a coherent northeastward motion of the Tashkent region relative to stable Eurasia, with velocities of approximately 4.9–5.6 mm/yr. Interpolated fields reveal subtle spatial gradients, with slightly higher velocities in the southern part of the region and localized anomalies near the Karzhantau and Kumbel faults. These zones coincide with clusters of seismicity during 2018–2024, confirming their role as primary strain accumulators. This study demonstrates the effectiveness of combining GNSS observations with advanced interpolation techniques to produce a continuous regional velocity field. The obtained results provide new insights into the active tectonics of the Tashkent region and represent an important contribution to seismic hazard assessment and geodynamic modeling in Uzbekistan.
🏷️ Keywords
📚 How to Cite:
Makhmudov M.D, Fazilova D.Sh, Khalimov B.T , GNSS-BASED VELOCITY FIELD OF THE TASHKENT REGION , Volume 13 , Issue 8, august 2025, EPRA International Journal of Economic Growth and Environmental Issues (EGEI) ,