Publication Date:
2019-07-12
Description:
Asymptotic ray theory is applied to surface waves in a medium where the lateral variations of structure are very smooth. The elastodynamic equations of motion in ray-centered coordinates are derived, and a laterally slowly-varying approximation for elastodynamic equations is obtained. Parabolic equations for Love and Rayleigh waves are studied and solved, and the properties of Gaussian beams of seismic surface waves are examined.
Keywords:
PHYSICS (GENERAL)
Type:
Geophysical Journal (ISSN 0016-8009); 82; 511-533
Format:
text
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