## Abstract

Using a dispersion relation derived under the acoustic medium assumption, I obtain an acoustic wave equation for orthorhombic media. Although an acoustic wave equation does not strictly describe a wave in anisotropic media, it accurately describes the kinematics of P-waves. The orthorhombic acoustic wave equation, unlike the transversely isotropic one, is a sixth-order equation with three sets of complex conjugate solutions. Only one set of these solutions are perturbations of the familiar acoustic wavefield solution for isotropic media for incoming and outgoing P-waves and, thus, are of interest here. The other two sets of solutions are simply the result of this artificially derived sixth-order equation.

Original language | English (US) |
---|---|

Pages (from-to) | 1169-1172 |

Number of pages | 4 |

Journal | Geophysics |

Volume | 68 |

Issue number | 4 |

DOIs | |

State | Published - 2003 |

Externally published | Yes |

## ASJC Scopus subject areas

- Geochemistry and Petrology