Russian Journal of Earth Sciences Russian Journal of Earth Sciences Russian Journal of Earth Sciences 1681-1208 46605 .2205/2016ES000568 ОРИГИНАЛЬНЫЕ СТАТЬИ ORIGINAL ARTICLES ОРИГИНАЛЬНЫЕ СТАТЬИ Deformation precursors of large earthquakes derived from long term GNSS observation data Deformation precursors of large earthquakes derived from long term GNSS observation data Кафтан Владимир Kaftan Vladimir Melnikov A Melnikov A Геофизический центр РАН Москва Россия Geophysical Center of the Russian Academy of Sciences Moscow Russian Federation Agro-Technological Institute, Peoples' Friendship University of Russia ru Agro-Technological Institute, Peoples' Friendship University of Russia ru 16 3 1 9 29 10 2021 https://rjes.ru/en/nauka/article/46605/view

The results of observation of Global Navigation Satellite Systems (GNSS) in areas of large earthquakes are analyzed in this article. The Earth's surface deformation characteristics before, during and after the earthquake are researched, the results indicate the presence of abnormal deformation near their epicenters. The statistical evaluation of abnormal deformations with their root mean squares (rms) are presented. Conclusions about the possibilities of using local GNSS observation networks for evaluation of risk of strong seismic events are performed.

The results of observation of Global Navigation Satellite Systems (GNSS) in areas of large earthquakes are analyzed in this article. The Earth's surface deformation characteristics before, during and after the earthquake are researched, the results indicate the presence of abnormal deformation near their epicenters. The statistical evaluation of abnormal deformations with their root mean squares (rms) are presented. Conclusions about the possibilities of using local GNSS observation networks for evaluation of risk of strong seismic events are performed.

 Earthquake precursors Earth's surface deformation GNSS observation San Andreas fault least square method seismic cycle related deformations earthquake interaction forecasting and prediction Earthquake precursors Earth's surface deformation GNSS observation San Andreas fault least square method seismic cycle related deformations earthquake interaction forecasting and prediction

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