microseism


Also found in: Dictionary, Thesaurus, Wikipedia.
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 ?
Microseisms detected on Earth are usually caused by sloshing waves in oceans caused by storms and the changing of tides.
And although detecting the microseisms is considered a breakthrough, NASA scientists are still waiting for the first marsquake to signify the mission's success.
The number of microseisms increased slightly from November 8 to November 10, but the microseism magnitudes were small (as shown in Figure 4(b)).
On November 11-12, the number of microseismic events increased rapidly, a total of 19 microseisms occurred within the surrounding rock within the two-day period, the number of daily microseismic events was greater than that of the previous period, the stress concentration in the rock mass was correspondingly obvious, and an area of large-scale deformation appeared within the rock mass, and this indicated the occurrence of soft rock failure.
(1989) Wide-angle triangulation array study of simultaneous primary microseism sources.
(2016) Estimate of Rayleigh-toLove wave ratio in the secondary microseism by a small array at Pinon Flat observatory, California.
A method to estimate phase velocities of Rayleigh waves using microseisms simultaneously observed at two sites, Bull.
"We've recently found that the waves on lakes actually generate these microseisms too.
Koper and his colleagues recorded lake microseisms from Yellowstone Lake and three more lakes in China, but they were not the first to record the phenomenon.
Aki, K.: 1965, A note on the use of microseisms in determining the shallow structures of the Earth's crust.
There is very interesting example of seismoacoustic waves which are of nearly identical spectrum, as microseisms propagated in the Earth's solid media (Ponomarev and Sorokin, 1996).
and Naini, B.: 1973, Sea wave origin of microbaroms and microseisms. J.