Common Reflection Surface Analysis: Paraxial approximation for the time of flight of signals traveling in a 2D acoustic medium
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Data
2005-10
Autori
Bonomi, Ernesto
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Abstract
This paper presents the derivation in the midpoint-offset domain of two formulae approximating, for a shot receiver pair, the time of flight of acoustic signals traveling in a 2D inhomogeneous medium. The first expression assumes a flat acquisition surface, while the second, which generalizes the first one, takes into account the topography of the ground. The problem is first solved in an auxiliary homogeneous medium; the resulting time of flight is then delayed to be accommodated to the final velocity macro-model.
Descrizione
A 6-hour lecture given at CRS4 in October 2005.
Keywords
seismic imaging , common-reflection-surface stack , parabolic and hyperbolic traveltimes