Аннотация:Reaction of the high-latitude lower ionosphere and the geomagnetic field to explosions of two Siberian meteoroids according to amplitudes of partially reflected ordinary and extraordinary waves, received by the partial reflection facility of the Tumanny radio physical observatory (69.0°N, 35.7°E), and geomagnetic field variations of the Lovozero geomagnetic observatory (68.0°N, 35.0°E) of the Polar Geophysical Institute had been considered. The first meteor has blown up at 21:29 UT, 4 March 2014, over the Vilyuysk district (Yakutia, Russia) (64.3°N, 123.1°E). The second meteor has blown up at 11:37 UT, 6 December 2016, in the region located near Sayanogorsk (Khakassia, Russia) (52.9°N, 91.4°E). It was shown that explosions have caused changes in the ionosphere and the geomagnetic field, and also appearance of waves of different types: internal gravity waves and slow magneto-hydrodynamic waves.