20210304 08484200 1.0 TRUE Portland Hills Fault M 6.8 earthquake, Peak Ground Acceleration To provide pga (peak ground acceleration) site ground motion information throughout the study area from a simulated Portland Hills Fault M 6.8 earthquake. Used in building and infrastructure damage models, and as an input into earthquake-induced ground failure model. Peak ground acceleration (pga) is the maximum ground acceleration that is estimated to occur at a location on the soil surface for a simulated earthquake. It is quantified as a proportion of standard acceleration due to gravity (or g).