FIRST-ORDER PERTURBATION THEORY FOR SEISMIC ISOCHRONS
- DSpace Home
- →
- Геология России
- →
- ELibrary
- →
- View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.
dc.contributor.author | Iversen E. | |
dc.date.accessioned | 2021-03-03T07:11:22Z | |
dc.date.available | 2021-03-03T07:11:22Z | |
dc.date.issued | 2001 | |
dc.identifier | https://elibrary.ru/item.asp?id=13740038 | |
dc.identifier.citation | Studia Geophysica et Geodaetica, 2001, 45, 4, 395-444 | |
dc.identifier.issn | 0039-3169 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/26224 | |
dc.description.abstract | A first-order perturbation theory for seismic isochrons is presented in a model independent form. Two ray concepts are fundamental in this theory, the isochron ray and the velocity ray, for which I obtain first-order approximations to position vectors and slowness vectors. Furthermore, isochron points are connected to a shot and receiver by conventional ray fields. Based on independent perturbation of the shot and receiver ray I obtain first-order approximations to velocity rays. The theory is applicable for 3D inhomogeneous anisotropic media, given that the shot and receiver rays, as well as their perturbations, can be generated with such model generality. The theory has applications in sensitivity analysis of prestack depth migration and in velocity model updating. Numerical examples of isochron and velocity rays are shown for a 2D homogeneous VTI model. The general impression is that the first-order approximation is, with some exceptions, sufficiently accurate for practical applications using an anisotropic velocity model. | |
dc.title | FIRST-ORDER PERTURBATION THEORY FOR SEISMIC ISOCHRONS | |
dc.type | Статья |
Files in this item
Files | Size | Format | View |
---|---|---|---|
There are no files associated with this item. |
This item appears in the following Collection(s)
-
ELibrary
Метаданные публикаций с сайта https://www.elibrary.ru