Source: wikibot/long-period-ground-motion

= Long period ground motion
{wiki=Long_period_ground_motion}

Long period ground motion refers to seismic waves that have relatively long wavelengths and period characteristics, typically lasting from several seconds to tens of seconds. These motions are particularly important in the context of earthquake engineering and seismic risk assessment, as they can significantly impact tall buildings, bridges, and other structures that have natural frequencies similar to the long period seismic waves.