Geoacoustic Inversion of Reflection Data in a Water Tank

Auteurs-es

  • Junjie (Jason) Shi <p>School of Earth and Ocean Sciences University of Victoria Victoria BC Canada V8P 5C2</p><p>AND</p><p>Key Laboratory of Underwater Acoustic Technology, Harbin Engineering University, China</p>
  • Stan Dosso School of Earth and Ocean Sciences University of Victoria Victoria BC Canada V8P 5C2
  • Dajun Sun <p>College of Underwater Acoustic EngineeringHarbin Engineering UniversityHarbin, China</p>

Résumé

This paper describes a nonlinear Bayesian approach to invert underwater acoustic reflection data for geoacoustic properties of sand layers at the base of a water tank. Recorded broadband acoustic signals (25-35 kHz) were processed by cross-correlating with the transmitted signal, and then windowed and filtered to estimate the reflection coefficient at multiple frequencies. In the Bayesian inversion, the unknown geoacoustic quantities of interest are considered as random variables constrained by data and prior information with the goal of interpreting the multi-dimensional posterior probability density. The inversion applies delayed rejection adaptive Metropolis (DRAM), a Markov Chain Monte Carlo sampling method, which not only provides a maximum a-posteriori parameters estimates but also quantifies the parameters uncertainties in terms of marginal probability distributions and credibility intervals; inter-parameter relationships are quantified by the correlation matrix and joint marginal distributions. Bayesian reflection inversion is illustrated for acoustic data measured in an anechoic water tank experiment conducted at Harbin Engineering University, China.

Bibliographies de l'auteur-e

Junjie (Jason) Shi, <p>School of Earth and Ocean Sciences University of Victoria Victoria BC Canada V8P 5C2</p><p>AND</p><p>Key Laboratory of Underwater Acoustic Technology, Harbin Engineering University, China</p>

Visiting Scholar, School of Earth and Ocean Sciences University of Victoria Victoria BC Canada V8P 5C2ANDAssistant Professor, Key Laboratory of Underwater Acoustic Technology, Harbin Engineering University, China

Stan Dosso, School of Earth and Ocean Sciences University of Victoria Victoria BC Canada V8P 5C2

Director and ProfessorSchool of Earth and Ocean SciencesUniversity of Victoria

Dajun Sun, <p>College of Underwater Acoustic EngineeringHarbin Engineering UniversityHarbin, China</p>

DeanCollege of Underwater Acoustic EngineeringHarbin Engineering UniversityHarbin, China

Fichiers supplémentaires

Publié-e

2016-08-24

Comment citer

1.
Shi J (Jason), Dosso S, Sun D. Geoacoustic Inversion of Reflection Data in a Water Tank. Canadian Acoustics [Internet]. 24 août 2016 [cité 25 nov. 2024];44(3). Disponible à: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/2932

Numéro

Vol. 44 No. 3 (2016)

Rubrique

Actes du congrès de la Semaine canadienne d'acoustique

Licence

Author Licensing Addendum

This Licensing Addendum ("Addendum") is entered into between the undersigned Author(s) and Canadian Acoustics journal published by the Canadian Acoustical Association (hereinafter referred to as the "Publisher"). The Author(s) and the Publisher agree as follows:

  1. Retained Rights: The Author(s) retain(s) the following rights:

    • The right to reproduce, distribute, and publicly display the Work on the Author's personal website or the website of the Author's institution.
    • The right to use the Work in the Author's teaching activities and presentations.
    • The right to include the Work in a compilation for the Author's personal use, not for sale.

  2. Grant of License: The Author(s) grant(s) to the Publisher a worldwide exclusive license to publish, reproduce, distribute, and display the Work in Canadian Acoustics and any other formats and media deemed appropriate by the Publisher.

  3. Attribution: The Publisher agrees to include proper attribution to the Author(s) in all publications and reproductions of the Work.

  4. No Conflict: This Addendum is intended to be in harmony with, and not in conflict with, the terms and conditions of the original agreement entered into between the Author(s) and the Publisher.

  5. Copyright Clause: Copyright on articles is held by the Author(s). The corresponding Author has the right to grant on behalf of all Authors and does grant on behalf of all Authors, a worldwide exclusive license to the Publisher and its licensees in perpetuity, in all forms, formats, and media (whether known now or created in the future), including but not limited to the rights to publish, reproduce, distribute, display, store, translate, create adaptations, reprints, include within collections, and create summaries, extracts, and/or abstracts of the Contribution.

Articles les plus lus du,de la,des même-s auteur-e-s

1 2 > >>