USING HIGH-PRECISION METHODS OF ASTROMETRY AND SPACE GEODESY TO STUDY EARTHQUAKES
This article is a comparative review of the methods of astrometry and space geodesy for the study of earthquakes. The article was prepared and written with the aim of exploring the possibilities of high-precision methods of astrometry and space geodesy for studying earthquakes. These methods include methods of VLBI and laser location of the satellite, and repeated GPS observations. The above-mentioned methods were investigated by studying and analyzing scientific publications of a similar subject. As a result of studying several scientific publications, descriptions of the previously mentioned methods and features of the organization of measurements by these methods, in particular for the VLBI method, were obtained. The second part of the article provides an overview of software and packages for post-processing repeated GPS observations using the method of precise positioning (PPP method). Based on the results of the work done, it can be said that the presented high-precision astrometric methods and methods of space geodesy allow performing complex geodynamic studies, determining the rotation of blocks of the Earth's crust based on the results of calculated instantaneous angular velocities and determining the displacement vectors (movement) of the Earth's crust in the event of earthquakes or seismic activity. No less important is the correct organization of work by these methods.