Seismic Modeling of the Soil Column
In engineering seismology, for site investigations required for civil engineering structures, we most commonly use Rayleigh-wave and rarely Love-wave dispersion curves to estimate an S-wave velocity-depth model for the soil column. We use first-arrival times associated with mostly refracted waves to estimate a P-wave velocity-depth model and shallow reflections to derive a seismic image for the near-surface. By using the velocity-depth model and the seismic image, we delineate the geometry of the layers and faults within the soil column, and the geometry of the soil-bedrock interface.
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.