Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005geoji.160....1b&link_type=abstract
Geophysical Journal International, Volume 160, Issue 1, pp. 1-4.
Astronomy and Astrophysics
Astronomy
2
Ray Theory, Transport Equation
Scientific paper
In this paper, we study an extension of the standard ray-theoretical transport equation. We include a higher-order term of the ray series and obtain a modified frequency-dependent transport equation. This equation is solved analytically and numerically for an elastic 1-D model. The analysis of the results documents that the ray series diverges just at the boundary of applicability of the underlying high-frequency approximation. This implies that taking into account higher-order terms in the ray series neither improves accuracy nor allows a shift of the boundary of its applicability towards lower frequencies.
Buske Stefan
Kravtsov Yury A.
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