This highly topical book, written by a leading Japanese author, provides a comprehensive study of current research in soil dynamics for earthquake engineering. The behaviour of the ground on which structures are built during earthquake conditions is crucial to understanding the behaviour of those structures. This well-illustrated text summarizes current knowledge of the subject, presenting material accumulated by Japanese and other researchers over recent years. It comprehensively covers theory, laboratory tests, and field work. It also includes helpful guidelines for civil engineers undertaking groundwork to protect structures in potential earthquake zones.