Resonant Oscillations Between the Solid Earth and the Atmosphere

Details Resonant Oscillations Between the Solid Earth and the Atmosphere Resonant Oscillations Between the Solid Earth and the Atmosphere

Mar 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000sci...287.2244n&link_type=abstract

Science, Volume 287, Issue 5461, pp. 2244-2246 (2000).

Physics

22

Scientific paper

Continuously excited free oscillations of the whole Earth have been found in the ground noise in a frequency band of long-period surface waves. Here we report evidence of an annual variation of this phenomenon, indicating that the excitation source is not within the solid Earth. There is evidence that these seismic free oscillations resonate with acoustic free oscillations of the atmosphere. The observed amplitudes suggest that the excitation source is at or just above Earth's surface.

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