This latest edition of an established work provides an authoritative account of the art and science of reflection seismology. It offers a clear explanation of the methods by which artificially created seismic waves are employed in the economical discovery of oil and gas, as well as their growing use in the exploitation of coal reserves and other energy resources. In this 3rd Edition more information is provided about peripheral methods such as velocity logging, vertical seismic profiling, and the use of shear waves in reflection work. Includes discussion of the advances that have been made in the past five years--for example, the ability to deal with two-dimensional data reception and the transmutation of such tremendous data arrays into 3-D information on the Earth's internal structure. Covers all important phases of theory, instrumentation, digital data processing, and scientific modelling, and discusses the fine art of interpreting the results.