Forcing atmospheric oscillations by long-period seismic oscillations: a case study

Abstract

Using synchronous measurements made by microbarograph and a seismograph 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 ∼0.5–4 h period range and which occur simultaneously in the Earth and atmosphere. The seismic oscillations shown could generate atmospheric oscillations by the ‘piston’ mechanism. A change of sign of the flux direction is also observed.