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A character of cosmic bodies influence on earthquakes in Earth crust and below it
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 18th International Conference on Geoinformatics - Theoretical and Applied Aspects, May 2019, Volume 2019, p.1 - 5
Abstract
Often, the detection of the cosmic bodies influence on earthquakes is carried out by finding correlation links between the lunar phases, the distance to the Moon, the time of the day, and so on. At the same time, the real physical impact of the Sun and the Moon on earthquakes can only be the gravitational. That is, such influence should realize through the tidal forces of these bodies in some zones in the Earth's body.
Based on an analysis of about 500,000 seismic events of the Northern California Earthquake Data Base of the USA, a statistically significant dependence of the number of earthquakes at depths up to 40 km on the phase of the moon was found. This dependence can be explained by the specifics of the changes in the tidal forces from the Moon and the Sun in different seasons. For depths of hypocenters over 40 km there is no such dependence.