mi·cro·seism

(mī′krə-sī′zəm)

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.

microseism

(ˈmaɪkrəʊˌsaɪzəm)

(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

mi•cro•seism

(ˈmaɪ krəˌsaɪ zəm, -səm)

n.

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.

microseism

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

ThesaurusAntonymsRelated WordsSynonymsLegend:

Noun

microseism - a small earthquake

earth tremor, tremor

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

Translations

microsismo

aardschok

Mentioned in

References in periodicals archive

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.

Research on the Law of Large-Scale Deformation and Failure of Soft Rock Based on Microseismic Monitoring

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.

Ambient seismic wave field

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.

An integration avenue of ground monitoring based on wireless sensor networks

M.: "Repeteability of Microseism Measurements in Port Hueneme Case Study".

Estimacion de la respuesta sismica del sitio usando mediciones de microtemblores en el sector Pan de Azucar, Ejido, estado Merida

(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].

Ocean seismic network seafloor observatories

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].

Acoustic Emission and Failure Modes for Coal-Rock Structure under Different Loading Rates

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).

Study on the law of mining stress evolution and fault activation under the influence of normal fault

(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.

Mechanism of complex mine pressure manifestation on coal mining work faces and analysis on the instability condition of roof blocks