Solar-lunar-terrestrial interactions: Bursts of neutron emission and seismic activity

In 1990-1991 an increase in the neutron emission intensity was observed at the new Moon and full Moon in seismically active regions of the Pamir mountains. In 1997, principally new data indicating that neutron bursts result from tidal phenomena in the Earth's crust were obtained. On the other hand, it is known that tidal forces can act as a triggering mechanism for seismic activity. Examination of homogeneous global data on earthquakes for 1964-1992 allowed us to reveal a 2-week lunar periodicity of earthquakes associated with the new Moon and full Moon phases. A further study of neutron bursts and their correlation with seismic activity can lead to the formulation of a new type of precursors of an increase in seismic activity: neutron bursts due to solar-lunar-terrestrial gravitational interactions.