Disturbance of Geophysical Fields during a Strong Earthquake in Myanmar on March 28, 2025 (M = 7.7)

The results of instrumental observations of geophysical effects that accompanied the catastrophic earthquake in Myanmar on March 28, 2025 are presented. It is shown that along with seismic waves, the earthquake was accompanied by the generation of an infrasound signal and variations in the amplitudes of the magnetic and electric fields in the surface atmosphere at a significant distance from the seismic event source. It is noted that the earthquake caused an increase in the GPS positioning error. The ionospheric effect of the earthquake in the form of a variation in the critical frequency of the F2 layer of the ionosphere is demonstrated based on the results of processing the data from the Okinawa ionospheric sounding station. The data obtained once again demonstrate the close interaction in the lithosphere-atmosphere-ionosphere system in the form of the influence of processes occurring in the lithosphere on the atmosphere and ionosphere.