microseism(redirected from microseismical)
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A faint earth tremor caused by natural phenomena, such as winds and strong ocean waves.
mi′cro·seis′mic (-sīz′mĭk, -sīs′-) adj.
(Geological Science) a very slight tremor of the earth's surface, thought not to be caused by an earthquake
microseismic, ˌmicroˈseismical adj
mi•cro•seism(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.
mi`cro•seis′mic, mi`cro•seis′mi•cal, adj.
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
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|Noun||1.||microseism - 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