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SEISMIC HAZARD MAPPING FOR PEAK GROUND VELOCITY – II: NATIONAL CAPITAL REGION, INDIA

V.W. Lee, M.D. Trifunac and I.D. Gupta

Paper No.: 586

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Vol.: 61

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No.: 2

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June, 2025

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pp. 41-53

Abstract

 

We present the probabilistic seismic hazard maps for , peak velocity of strong earthquake ground motion in National Capital Region (NCR) of India. The maps are presented for all possible combinations of geological site parameters (sediments, intermediate sites, basement rock sites) and soil site parameters (“rock soil”, stiff soil and deep soil). The user will select the and parameters based on the local site investigation. These maps can be utilized to evaluate (a) the strains near ground surface during strong earthquake ground motion, (b) the areas where buildings may be damaged during future strong ground motion, and (c) how can be utilized to obtain the estimates of pseudo-static forces in ground level columns of long structures from the probabilistic estimates of relative displacement response spectra.
Keywords: Probabilistic Maps of ; Peak Ground Strains; Differential Ground Motion; Pseudo Static Forces in Ground Floor Columns

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