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Wavefronts and Rays Characteristics and Asymptotics

Wavefronts and Rays Characteristics and Asymptotics

This is a free, online physics textbook. According to the site, "In these lecture notes we strive to explain the understanding of the underpinnings of ray theory. These notes are intended for senior undergraduate and graduate students interested in the modern treatment of ray theory expressed in mathematical language. We assume that the reader is familiar with linear algebra, differential and integral calculus, vector calculus as well as tensor analysis. To investigate seismic wave propagation, we often use the concepts of rays and wavefronts. These concepts result from studying the elastodynamic equations using the method of characteristics or using the high-frequency approximation. Characteristics of the elastodynamic equations are given by the eikonal function whose level sets are... Show More


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