Modes to replace transitional asymptotic ray fields in a vertically inhomogeneous earth model

Document Type

Article

Publication Date

1-1-1985

Abstract

Summary. Asymptotic ray theory (ART) fails in transition regions near critically reflected, bottom glancing or caustic‐forming rays in a vertically inhomogeneous layered earth. These deficiencies are repaired here by replacing the transitional ray fields with guided modes plus truncation remainders. Exact ray‐mode equivalences and their high‐frequency asymptotic approximations are formulated, and their validity and efficiency are verified by numerical comparisons for SH motion in a two‐layer earth model comprised of an inhomogeneous sediment above an homogeneous semi‐infinite bedrock. Copyright © 1985, Wiley Blackwell. All rights reserved

Identifier

0022183484 (Scopus)

Publication Title

Geophysical Journal of the Royal Astronomical Society

External Full Text Location

https://doi.org/10.1111/j.1365-246X.1985.tb05096.x

e-ISSN

1365246X

ISSN

00168009

First Page

289

Last Page

312

Issue

2

Volume

80

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