Anomalous Dynamics Of Hydrogeochemical Parameters (Cl⁻, Co₂, Eh, Ph, T) Of The Chimyan Np-1 Well Associated With The M=5.7 Earthquake

Abstract

Hydrogeochemical changes associated with earthquakes are considered as a potential tool for detecting earthquake  signals. The article presents the results of scientific analysis of seismological monitoring data conducted by the  Republican Center for Seismological Monitoring of the Ministry of Emergency Situations of the Republic of  Uzbekistan at the Institute of Seismology, which analyzed the changes in the hydrogeoseismological parameters Cl⁻,  CO₂, EH, PH, Tº in the “Chimyon NP1” well in the Fergana geodynamic polygon during the preparatory phase of the  earthquakes that occurred in 2025. As a result of the analysis, graphs were drawn and anomalous periods of each  parameter were determined. These results prove that hydrogeochemical monitoring can be very effective for seismic  monitoring.