Abstract

Subsurface conditions play a major role in the damage potential of earthquakes and the seismic soil amplification of a site which is a critical factor affecting the level of ground shaking. Shear wave velocity (Vs) of the soil layer is an important parameter influencing the amplification behaviour of the site. Site characterization in calculating seismic hazards is usually based on the near-surface shear wave velocity values. The average shear wave velocity of the top 30 m of the soil, referred to as (Vs)30 is commonly adopted by competent building codes to classify the sites for earthquake resistant design of structures and in general it is widely used in microzonation studies.

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