Catastrophe Risk Management Technology
  • Overview
  • Site-specific PSHA
  • Ground Motion Simulation
  • Ground Motion Spectral Matching
  • Development of PSH Maps
  • Earthquake Catalogue Simulation
  • Site-specific Response Analyses

    Shallow surface soft soil layer typically amplifies earthquake ground motions and, as a result, buildings located on soft soil experience higher ground shaking than those on firm soil or rock outcrops. The influence of the underlying soil on the local amplification of earthquake shaking is called the site effect. The effect is well represented on the response spectra regardless of other characteristics of earthquakes. Site response analyses allow assessment of such effect which results in amplification factor spectra and ground motion time histories with soil layer effect implemented.