LASER METHODS OF GALLERY MEAUSREMENT CRUSTAL DEFORMATION
Created a heterodyne laser system was implemented registration of tidal deformations of the earth's surface. Got the record strain difference in the shoulders with a two-channel interferometer observation lasting about two days. The period of oscillation is presented ~ 12.5 hours, which allows us to interpret them as the result of the combined action of the semidiurnal M (period T = 12,421 hours) and daily O (period T = 25,819 hours) tidal waves. The oscillation amplitude is ~ 0.25 micrometer, which corresponds to 25 meters on the basis of relative deformation of the earth's crust 10<sup>-8</sup>.