Noise Analysis
Noise Analysis :
A method of examining the subsoil based on analysis of ambient seismic noise (micro tremors), small amplitude seismic waves caused by natural or man-made sources such as the waves in the sea, the wind, traffic, etc. By measuring the frequency of ground vibration, this analysis determines the thickness of "soft" surface soils, when the propagation velocity of shear waves Vs or the thickness of the surface is known. In both cases, measurement of micro-tremors permits subsoil geological model reconstruction used in seismic microzonation studies
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