The Seismic Wavefield provides a guide to the understanding of seismograms in terms of physical propagation processes within the Earth. The focus is on the observation of earthquakes and man-made sources on all scales, for both body waves and surface waves. Volume I begins with a survey of the structure of the Earth and the nature of seismic wave propagation using examples of observed seismograms. The second part provides a full development of the theoretical background for seismic waves. Volume II covers local and regional seismic events, global wave propagation, and the three-dimensional Earth. The combination of observation and theoretical development with a strong visual focus will greatly appeal to graduate students in seismology. The book will also be valuable to researchers and professionals in academia and the petroleum industry.