Experience in synchronous observation of seismic-strain oscillations of the Earth by the spaced laser interferometers

• Published in: E3S Web of Conferences
• Main Authors: Aleksandrov Dmitriy, Dubrov Mstislav, Kravtsov Vasiliy, Larionov Igor
• Format: Article in Journal/Newspaper
• Language: English; French
• Published: EDP Sciences 2020
• Subjects: Environmental sciences; GE1-350; Kamchatka Peninsula; Karymshina; Kamchatka
• Online Access: https://doi.org/10.1051/e3sconf/202019602010; https://doaj.org/article/cf7778379fbb42d38117482ba8267dd0

The first results of unique experiments on the synchronous registration of seismic-strain oscillations of the Earth’s surface by three laser interferometers-deformographs (strainmeters) spaced 6740 km apart are presented. Two 100-meter laser interferometers at the Fryazino site (Moscow Region) and the 18-meter laser strainmeter at the observation point of Karymshina (Kamchatka Peninsula) were applied. The frequency-stabilized and thermally controlled lasers and the interferogram registration systems of compensation and modulation types providing an absolute instrumental resolution of 0.1-0.01 nm were used. The results of data analysis in sessions of synchronous operation of these instruments during 2016-2020 were obtained and discussed.