Valijon Yusupov1 and Bekzod Kayumov2
Bukhara Region, one of the seismically active areas of Uzbekistan, is classi ed as a high seismic risk
zone. Pre-seismic variations in groundwater levels and their chemical composition are often
considered indicators of the onset or preparatory phase of seismic activity. The earthquake of
magnitude M=4.2 that occurred on January 14, 2025, in the Karakul district of Bukhara Region,
followed by another event of magnitude M=4.0 on January 23, 2025, in the nearby area, prompted an
analysis of groundwater parameter anomalies observed in this region. This study analyzes variations
in groundwater parameters prior to these earthquakes, based on hydrogeoseismological data
obtained from a deep borehole in Bukhara Region. Identifying correlations between
hydrogeoseismological anomalies and seismic events allows for associating seismicity with changes
in groundwater gas composition, geochemical processes, and other physical parameters.
