Abstract
Dynamic ray tracing has recently found broad application in the numerical modelling of high-frequency seismic wave fields in complex 2-D and 3-D layered structures. It involves solving a system of ordinary differential equations (dynamic ray tracing system) along a ray. This paper briefly explains the main principles of dynamic ray tracing in ray centred coordinates, introduces the ray propagator matrix and describes its properties, summarizes the most important applications of dynamic ray tracing and of the ray propagator matrix. Together with known applications, several new applications are discussed in greater detail. Among these, a method to determine the geometrical spreading from the travel-time measurements is proposed.
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