Research CommentariesSeismology

Shaking Without Quaking

Science  27 Mar 1998:
Vol. 279, Issue 5359, pp. 2063-2064
DOI: 10.1126/science.279.5359.2063

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Summary

The idea that Earth can ring like a bell was proposed more than 80 years ago; since then, geoscientists have debated what mechanisms can set Earth ringing. In his Research Commentary, Kanamori discusses recent research, including a research report in the same issue by Suda et al ., showing that these free oscillations can be driven by both earthquakes and nonearthquake forces such as atmospheric disturbances.