When an elastic solid is bounded, it can support waves traveling along the boundary, such as the free surface. Waves that travel along the surface are called surface waves. Surface waves are generally characterized as dispersive; that is, each frequency component travels at a different speed. Based on the elastic wave theory described in Appendix A, we now review the nature of surface-wave propagation.
Figures & Tables
The narrow scope of engineering seismology includes its application to geotechnical site investigations for buildings and engineering infrastructures, such as dams, levees, bridges, and tunnels, and landslide and active-fault investigations. It also includes seismic microzonation to determine soil amplification and liquefaction susceptibility within a municipal area to estimate the earthquake risk. The broad scope of engineering seismology also includes its application to groundwater exploration, coal and mineral exploration, geothermal exploration, and investigations of historic buildings and archaeological sites. This book primarily is devoted to application of the seismic method to geotechnical engineering. Nevertheless, the book also includes chapters on case studies for the broader scope of engineering seismology.