FORCING ATMOSPHERIC OSCILLATIONS BY LONG-PERIOD SEISMIC OSCILLATIONS - A CASE-STUDY

Using synchronous measurements made by microbarograph and a seismograp h with a vertical pendulum, the sign of the vertical direction of the wave energy flux in the atmosphere at the ground has been derived for oscillations in the similar to 0.5-4 h period range and which occur si multaneously in the Earth and atmosphere. The seismic oscillations sho wn could generate atmospheric oscillations by the 'piston' mechanism. A change of sign of the flux direction is also observed. (C) 1996 Else vier Science Ltd