The Barrier Model and Strong Ground Motion

An overview of the most important developments in Engineering (or Strong Motion) Seismology is presented alongside Professor Keiiti Aki’s contributions, who is one of the founders of this field. The mechanics of earthquake rupture are discussed with due emphasis on the various physical phenomena. The presentation is made in a tutorial manner, borrowing freely from Keiiti Aki’s papers, and endeavoring to emulate his unique style of clarity, simplicity and synthetic ability.