Slow Strain Waves in Geophysics

For fifty years, scientists from different countries in different regions of the Earth, using direct and indirect methods, discovered the migration of crustal deformation and earthquakes, and revealed its wave nature, and therefore proved the reality of the existence of slow strain waves in the Earth. This review presents a brief history of the development of the concept of strain waves in the Earth, the observation methods and properties of strain waves, and main types of the geological structures generating these waves, as well as the most prominent results of the theoretical, laboratory, and in-situ observations of slow strain migration.