Perimeters of existing spectral micro-zoning studies

Perimeters for which a spectral seismic micro-zonation study is available with links to further information. The amplification of seismic waves through the local geology is modeled in a seismic spectral micro-zoning study. Local seismic amplification functions and response spectrums are determined as a result. These response spectrums can be used to determine the earthquake loads on buildings instead of the response spectrums of standard SIA 261.