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2022•Unpublished venueRequires access

A stable TTI acoustic wave equation

Linbin Zhang, Edose Ohen

Open publisher page 1 citations

Abstract

There are different acoustic wave equations used in TTI reverse time migration. Some equations have strong shear waves which will create artifacts in final RTM images. In this paper, a pure P wave equation is proposed for TTI media based on the dispersion relation. Compared to some TTI wave equations, our new wave equation is not only shear wave free but also stable even when ϵ<δ. We validate the accuracy of the acoustic wave equation using synthetic velocity models.

About this research paper

What this paper is about

There are different acoustic wave equations used in TTI reverse time migration. Some equations have strong shear waves which will create artifacts in final RTM images. In this paper, a pure P wave equation is proposed for TTI media based on the dispersion relation. Compared to some TTI wave equations, our new wave equation is not only shear wave free but also stable even when ϵ<δ. We validate the accuracy of the acoustic wave equation using synthetic velocity models.

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Available abstract

There are different acoustic wave equations used in TTI reverse time migration. Some equations have strong shear waves which will create artifacts in final RTM images. In this paper, a pure P wave equation is proposed for TTI media based on the dispersion relation. Compared to some TTI wave equations, our new wave equation is not only shear wave free but also stable even when ϵ<δ. We validate the accuracy of the acoustic wave equation using synthetic velocity models.

Key concepts: Acoustic wave equation, Wave equation, Acoustics, Dispersion (optics), Dispersion relation, Shear (geology), Acoustic wave, Physics

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