О природе некоторых периодических изменений в сейсмическом режиме Земли

We analyzed regularities of the latitude distribution of earthquake number at the Earth, temporal periodicity peculiarities for the process of seismic activity switching between the Northern Hemisphere and the Southern one, and also the character of annual distribution of the seismic activity maximums in the Pacific region. A connection between seismic activity increase during winter months and the process of the Earth movement through perihelion zone, in which Sun tidal forces increase by 6.4%, was demonstrated.