Аннотация:The effects of 19 earthquakes (Mw = 6.8−9.0, epicentral distances 80–14600 km) are considered on data of
long-term precision water level observations in the YuZ-5 well, Kamchatka Peninsula. Four types of water
level variations were identified: I—oscillations, II—oscillations with short-term rise, III—short-term rises,
IV—long-term decreases. Manifestations of the selected types of water level variations are determined by
the intensity of seismic impact corresponding to the ratio of magnitude and earthquake’s epicentral
distance, the calculated values of specific density of energy in seismic wave, maximum velocity and
amplitude-frequency composition of maximum phases in the earthquake record, obtained from broadband
seismic waveforms at the nearest station. Dynamic deformation of water-bearing rocks during the passage
of seismic waves is accompanied by different hydrogeodynamic processes in the “well—water-bearing
rock” system including amplification of water pressure variations in the wellbore, short-term impulses of
pressure near the wellbore, water pressure decrease at distances up to hundreds of meters from the well due
to increased permeability of water-bearing rocks during intense shocks. Based on water level variations
modelling, we show evaluation criteria for possibility of their occurrences. These criteria include the
presence of certain frequencies in composition of seismic wave (oscillations), values of amplitudes and
relaxation times of water pressure impulses (short-term level rises), presence of geological objects with
variable permeability in the vicinity of the well.