Investigation of prognostic anomalies of induced seismicity in the Koina and Varna reservoirs.

Seismic activity is one of the most dangerous and unstable natural phenomena on our planet. Research in the field of seismology is of great importance for minimizing the risks associated with earthquakes and improving the quality of their forecast. Induced seismicity refers to earthquakes that are caused by human activity. An example of such activity is the construction and use of hydraulic structures, such as dams or reservoirs. During the preparation of strong earthquakes, the distribution of seismic events in the space-time domain and their energy spectrum changes. Such changes are called anomalies of the seismic regime, they can be detected by analyzing the parameters of seismicity, which indirectly describe the state of the geophysical environment. Despite its high fundamental and practical importance, few publications have been devoted to the analysis of predictive anomalies in induced seismicity. In this paper, the question of the presence or absence of anomalies of the seismic regime before earthquakes in the field of induced seismicity is considered. Studies are being conducted for strong earthquakes in the area of Koina and Varna reservoirs in India. Preliminary preparation of the catalog is carried out, control of the representative magnitude, calculation of spatial maps of seismicity parameters. The results obtained can be used to develop effective measures to reduce risks and ensure the safety of the population, and can also clarify some features of the earthquake preparation process in areas of induced seismicity.