Edge Effect (On Ground Motion in A Basin)
Edge Effect (On Ground Motion in A Basin) : A special amplification effect found near the edge of a basin. In a two- or three-dimensional model of basin, basin-induced diffracted waves and surface waves generated at the edge by an incident body wave meet together in phase at some point causing constructive interference. As a result the amplitude of ground motion there becomes much larger than in the case of a simple one-dimensional model. The edge effect contributed importantly to the damage concentration in Kobe during the Hyogo-ken Nanbu earthquake of 1995. See also Chapter 14 of this Manual and Kawase (2003)
No records Found