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Related to microseism: microcosm


A faint earth tremor caused by natural phenomena, such as winds and strong ocean waves.

mi′cro·seis′mic (-sīz′mĭk, -sīs′-) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Geological Science) a very slight tremor of the earth's surface, thought not to be caused by an earthquake
microseismic, ˌmicroˈseismical adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈmaɪ krəˌsaɪ zəm, -səm)

a feeble recurrent vibration of the ground recorded by seismographs and believed to be due to an earthquake or a storm at sea.
[1885–90; micro + Greek seismós earthquake (see seismic)]
mi`cro•seis′mic, mi`cro•seis′mi•cal, adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.


an almost imperceptible earth tremor caused by a violent sea storm or an earthquake and detected only by a microseismometer. — microseismic, adj.
See also: Earthquakes
-Ologies & -Isms. Copyright 2008 The Gale Group, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.microseism - a small earthquakemicroseism - a small earthquake      
earthquake, quake, seism, temblor - shaking and vibration at the surface of the earth resulting from underground movement along a fault plane of from volcanic activity
aftershock - a tremor (or one of a series of tremors) occurring after the main shock of an earthquake
foreshock - a tremor preceding an earthquake
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
The InSight has yet to detect any marsquake, but the microseism shows that the lander's seismometer is working.
Meanwhile, the distance between the first two sensors and the working face should be within 50 m, otherwise the microseism positioning accuracy will be affected.
Based on this framework, the amplitude of the secondary microseism [A.sub.2] is proportional to the power of ocean wave height in the dominant source area, whereas that of the primary microseisms [A.sub.1] is proportional to ocean wave height in the dominant source area.
Study of the AE characteristics from small-scale rock failure to large-scale rock dynamic disasters as well as precursor laws of microseism involves the size effect of coal and rock mass.
Yang, "Improvement of microseism locating based on simplex method without velocity measuring," Chinese Journal of Rock Mechanics and Engineering, vol.
The ground and environment monitoring system measures information on microseism, minute displacement, strain ratio, temperature, water level, water quality, exhaust/atmospheric gas, soil, and so forth for chief national facilities.
(The seafloor and buried sensors were not yet in place during this event.) Ambient noise spectra of the three components of the borehole sensor show that the horizontal components are noisier than the vertical components below about 0.04 hertz and that the horizontal components are quieter than the vertical components above the microseism peak at about 0.1 hertz [ILLUSTRATION FOR OMITTED].
Various kinds of monitoring information of combined samples can be obtained under different test conditions, while AE and microseism information can reflect the energy dissipation intensity of combined samples during the failure process [17, 19].
Production practice has proved that rock bursts and microseism easily occur when mining in the vicinity of a fault (Alber et al., 2009; Chen et al., 2012; Cianciara et al., 2008; Aguado et al., 2009; Gaviglio, 1985; Cao et al., 2009).
(2001) analysed the fracturing characteristics of roofing from the perspective of microseism while Peng (1973; 1993) revealed the pattern of roofing activity and structural characteristics of roofing at the working face from the perspective of indoor rock mechanics and physical equivalent simulation.