Three-dimensional seismic ray tracing
Item
Title (Dublin Core)
en-US
Three-dimensional seismic ray tracing
Description (Dublin Core)
en-US
Two methods for tracing seismic rays between 2 given end points through three dimensional, continuously varying velocity structures are available. This paper describes and compares them for problems of practical interest and for analytical ray paths through an idealized velocity structure. One method involves "shooting" the ray from one point with a given starting direction and then modifying this starting direction until the ray emerges at the desired target, while the other method involves "bending" an initial path between the end points until it satisfies the principle of stationary time. For most of the models investigated, "bending" is computationally faster than "shooting" by a factor of 10 or more. The "bending" method can be modified to deal with discontinuities in the velocity model, and can also be adapted for use in conjunction with a table of distances as a function of ray parameter when the three dimensional anomaly influences only a small fraction of the total ray path. The geometrical spreading effect on the amplitude of the ray may be retrieved easily from the "bending" solution.
ARK: https://n2t.net/ark:/88439/y041002
Permalink: https://geophysicsjournal.com/article/133
ARK: https://n2t.net/ark:/88439/y041002
Permalink: https://geophysicsjournal.com/article/133
Creator (Dublin Core)
Julian, B.R.
Gubbins, D.
Subject (Dublin Core)
en-US
Seismic ray tracing
en-US
Geometrical optics
en-US
Seismology
Publisher (Dublin Core)
en-US
Journal of Geophysics
Date (Dublin Core)
1977-05-20
Type (Dublin Core)
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
en-US
Peer-reviewed Article
Format (Dublin Core)
application/pdf
Identifier (Dublin Core)
https://journal.geophysicsjournal.com/JofG/article/view/133
Source (Dublin Core)
en-US
Journal of Geophysics; Vol 43 No 1 (1977): Journal of Geophysics; 95-113
2643-2986
2643-9271
Language (Dublin Core)
eng
Relation (Dublin Core)
https://journal.geophysicsjournal.com/JofG/article/view/133/92