System of Laser Interferometers with a Large Spatial Difference to Study the Seismic-Deformation Oscillations of the Earth

Dubrov M.N1, Larionov I.A.2, Alexandrov D.V.1, Kravtsov D.V.1
  1. Kotelnikov Institute of Radioengineering and Electronics, Russian Academy of Sciences, Fryazino Branch
  2. Institute of Cosmophysical Research and Radio Wave Propagation FEB RAS, Russia

The results of unique experiments on synchronous recording of oscillations of earth’s surface with three laser interferometers–deformographs spaced at a distance of 6740 km, obtained during 2016–2020, are considered: two 100-m laser deformographs (Fryazino, Moscow oblast) and one 18-meter (Karymshina site, Kamchatka krai). It is shown that frequency-stabilized and thermocontrolled lasers, as well as systems for registering shifts of the compensation and modulation type interferogram provide an absolute instrumental resolution of 0.1–0.01 nm.

Dubrov M.N., Larionov I.A., Alexandrov D.V. et al. System of Laser Interferometers with a Large Spatial Difference to Study the Seismic-Deformation Oscillations of the Earth // J. Commun. Technol. Electron. 2023. Vol. 68. P. 796–809 (2023). https://doi.org/10.1134/S1064226923070033