In the epicentral areas of major recent earthquakes, landslide density scales with peak ground acceleration. Topographic site effects on seismic waves are known to cause important gradients in ground acceleration in individual mountain ridges. Using landslide ...

A set of approximate, multivariable relations is established to evaluate soil effects on the peak horizontal acceleration, the peak horizontal velocity and the horizontal elastic response spectra (5% damping). The basic innovation of the approach is the use ...