Mar 1966
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1966esrv....1..213d&link_type=abstract
Earth Science Reviews, Volume 1, Issue 2-3, p. 213-230.
Physics
Scientific paper
SummaryMicroseisms are continuous seismic disturbances of the earth's surface that constitute the normal background oscillations of seismograms. Although they range in period from a fraction of a second to about 260 sec, the most prominent microseism signals, which are definitely related to marine storms, have periods from 2 to 10 sec and speeds of 4,000 20,000 ft./sec (1,800 5,900 m/sec). Ground amplitude is most commonly from 0.5 to 5 μ. Microseisms are probably generated as Rayleigh waves which at times seem to undergo modification to Love waves during propagation. The origin of microseisms of the storm type has been attributed to surf, atmospheric turbulence in storm areas, and standing waves in the ocean resulting from the interference of oppositely moving wave trains of the same period.
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