Trigger factors and ways of provoking the seismic and volcanic activity

The trigger factors of various nature that lead to the excitation of seismic-volcanic activity are briefly considered. Based on the solution of the generalized Boussinesq problem for half-space and typical pressure differences in medium-power typhoons, some estimates of the trigger effect of such differences on the provocation of earthquakes are given. The possible mechanisms of the trigger effect of typhoons on seismicity before they move from the sea area to the land are discussed.