The investigations of the response of midlatitude ionospheric D-region to power atmospheric front

It was experimentally found that almost in half of cases of atmospheric front (AF) passages quasi-periodic changes in A_{o, x}(z, t) and A_{no, x}(z, t) take place, due to the passage of infrasonic waves. This processes changed its height with velocity of 300-350 m/s. It was also established that during the passage of AF in the bottom of the D-region (z <; 80 km) electron density values N (z, t) were underestimated by a factor of 1.2-2.2 as compared with control days.