Trans-dimensional joint inversion of seabed scattering and reflection data

Gavin Steininger, Jan Dettmer, Stan E. Dosso, Charles W. Holland

Research output: Contribution to journalArticle

29 Scopus citations

Abstract

This paper examines joint inversion of acoustic scattering and reflection data to resolve seabed interface roughness parameters (spectral strength, exponent, and cutoff) and geoacoustic profiles. Trans-dimensional (trans-D) Bayesian sampling is applied with both the number of sediment layers and the order (zeroth or first) of auto-regressive parameters in the error model treated as unknowns. A prior distribution that allows fluid sediment layers over an elastic basement in a trans-D inversion is derived and implemented. Three cases are considered: Scattering-only inversion, joint scattering and reflection inversion, and joint inversion with the trans-D auto-regressive error model. Including reflection data improves the resolution of scattering and geoacoustic parameters. The trans-D auto-regressive model further improves scattering resolution and correctly differentiates between strongly and weakly correlated residual errors.

Original languageEnglish (US)
Pages (from-to)1347-1357
Number of pages11
JournalJournal of the Acoustical Society of America
Volume133
Issue number3
DOIs
StatePublished - Mar 2013

All Science Journal Classification (ASJC) codes

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics

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