Calculation of geometrical spreading from gridded slowness vectors in 2-D

Ludek Klimes


The paper is devoted to the numerical calculation of the point-source geometrical spreading from gridded travel times or slowness vectors in 2-D. The geometrical spreading is obtained by finite differencing the slowness vectors corresponding to two different positions of a point source. The slowness vectors may be calculated directly, or as the finite-difference gradients of gridded travel times.


Paraxial ray approximation, travel times, geometrical spreading, amplitudes, Green function.

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In: Seismic Waves in Complex 3-D Structures, Report 10, pp. 115-120, Dep. Geophys., Charles Univ., Prague, 2000.
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