Yu.A. Vinogradov, M.I. Ryzhikova, N.V. Petrova, S.G. Poygina, M.V. Kolomiets
Global earthquakes in the 2020 second half according to the GS RAS  ........................  7

V.E. Asming, A.V. Fedorov, A.V. Prokudina
The program LOS for interactive seismic and infrasonic data processing  ...................  27

D.V. Kostylev
Formation of a unified system for collecting seismological information
in the Sakhalin Division GS RAS .................................................................................  41

A.V. Liseikin, V.S. Seleznev
Most important results of the scientific activity of the Seismological Division
GS RAS in 2016-2020 (seismic research) ...................................................................  54

G.N. Kopylova, A.A. Lyubushin, L.N. Taranova
New prognostic technology for analysis of low-frequency seismic noise variations
(on the example of the Russian Far East) ...................................................................  75

V.O. Voleysho
Short-term earthquake forecast ................................................................................. 92