microseism


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Related to microseism: microcosm

microseism

[′mī·krə‚sīz·əm]
(geophysics)
A weak, continuous, oscillatory motion in the earth having a period of 1-9 seconds and caused by a variety of agents, especially atmospheric agents; not related to an earthquake.
References in periodicals archive ?
A note on the use of microseisms in determining the shallow structures of the Earth's Crust.
A method to estimate phase velocities of Rayleigh waves using microseisms simultaneously observed at two sites, Bull.