Once an earthquake occurs, it excites the ionosphere. This was well known after the seismic ionospheric coupling that generated an ionospheric disturbance due to Kurile Islands earthquake in August 1969. The seismic waves caused a change in the vertical component of the longitudinal waves that moved the contours of constant electron density layers. The upward propagation of these acoustic waves, have increasing amplitude in relation with a decreasing in the density of the neutral atmosphere. This means a displacement of few centimeters on the ground increases into a displacement of the order...