Seismic zoning maps of the National Capital Region (NCR) of India

We present seismic zoning maps of the National Capital Region (NCR) India in terms uniform hazard spectrum (UHS) amplitudes using three different attenuation equations to model contributions local earthquakes around region and distant northwestern Himalaya (NWH) Hindu Kush Subduction (HKS) sources. Our results show that shape design spectra must depend on nature contributing earthquake sources, their relative activity, potential create large magnitudes, geographical placement site selected for computation. also specifying strong motion use engineering by means peak ground acceleration a standard spectral may result significant underestimation intermediate long-period motions critical buildings higher than four five stories hence should not be used. nine possible combinations geological conditions (sediments, sites, basement rock sites) soil (“rock,” stiff deep sites). One these can readily used extract UHS pseudo velocity (PSV) at any NCR site-condition parameters from high-resolution surface map determining experiments limited alone. The paper provides scale 1:1 million rough idea interest.