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Related Experiment Video

Updated: Jun 26, 2026

Exploring the Effects of Atmospheric Forcings on Evaporation: Experimental Integration of the Atmospheric Boundary Layer and Shallow Subsurface

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Resonant oscillations between the solid earth and the atmosphere

Nishida¹, Kobayashi, Fukao

¹Earthquake Research Institute, University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-0032, Japan. Earth and Planetary Sciences, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8550, Japan.

Science (New York, N.Y.)

|March 24, 2000

Summary

Earth

Area of Science:

Geophysics
Seismology
Atmospheric Acoustics

Background:

Continuous free oscillations of the Earth detected in seismic noise.
These oscillations occur in the long-period surface wave frequency band.

Purpose of the Study:

Investigate the annual variation in Earth's free oscillations.
Determine the excitation source of these seismic oscillations.

Main Methods:

Analysis of seismic ground noise data.
Correlation analysis between seismic oscillations and atmospheric phenomena.

Main Results:

Evidence of an annual variation in Earth's free oscillations.
Observed resonance between seismic and atmospheric acoustic oscillations.

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Indication that the excitation source is at or near Earth's surface.

Conclusions:

The excitation source of Earth's free oscillations is external to the solid Earth.
Atmospheric acoustic oscillations likely play a role in exciting seismic free oscillations.