TY - JOUR AU - V. V. Bogdanov AU - A. V. Pavlov TI - Disturbances in the F2 layer of the ionosphere preceding the onset of earthquakes with $ M\geq 6.0$ in the Kamchatka region JO - Vestnik KRAUNC. Fiziko-matematičeskie nauki PY - 2023 SP - 67 EP - 80 VL - 45 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/VKAM_2023_45_4_a4/ LA - ru ID - VKAM_2023_45_4_a4 ER -