A novel model and estimation method for the individual random component of earthquake ground-motion relations

Abstract

In this paper, I introduce a novel approach to modelling the individual random component (also called the intraevent uncertainty) of a ground-motion relation (GMR), as well as a novel approach to estimating the corresponding parameters. In essence, I contend that the individual random component is reproduced adequately by a simple stochastic mechanism of random impulses acting in the horizontal plane, with random directions.