“…Previous studies demonstrate both analytically (e.g. Lee, 2013;Moots, 1938) and experimentally (e.g. Graf & Qu, 2004;Graf & Song, 1995;Hunt, 1997;Nezu et al, 1997;Nezu & Nakagawa, 1995;Qu, 2002) that the peak phasing is commensurate with the strength of the hysteresis, that in turn is directly dependent on the site conditions and dynamic characteristics of the wave.…”