High resolution quantitative seabed mapping: Exploiting the frequency-domain reflection coefficient

C. W. Holland, J. Belcourt, S. Dosso, J. Dettmer

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The frequency-domain reflection coefficient contains high information content on seabed properties. In addition to the usual angular domain features of the critical angle and the angle of intromission, the frequency-domain reflection coefficient exhibits Bragg resonances from up- and down-going waves in individual layers and between individual layers. It is the Bragg resonances that contain the highest quantitative seabed information. By using a full-physics forward model (the Sommerfeld integral), a sophisticated and causal sediment acoustics model (Viscous Grain Shearing theory), and a trans-dimensional inversion framework, high resolution (vertical and horizontal) estimates of seabed geotechnical and geophysical properties can be obtained along with rigorous uncertainties. The seabed properties are compared with independent (i.e., not used as a priori information to constrain the inversion results) core measurements. The two measurements of the seabed properties generally agree quite closely.

Original languageEnglish (US)
Title of host publication81st EAGE Conference and Exhibition 2019 Workshop Programme
PublisherEAGE Publishing BV
ISBN (Electronic)9789462822924
DOIs
StatePublished - Jun 3 2019
Event81st EAGE Conference and Exhibition 2019 Workshop Programme - London, United Kingdom
Duration: Jun 3 2019Jun 6 2019

Publication series

Name81st EAGE Conference and Exhibition 2019 Workshop Programme

Conference

Conference81st EAGE Conference and Exhibition 2019 Workshop Programme
CountryUnited Kingdom
CityLondon
Period6/3/196/6/19

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All Science Journal Classification (ASJC) codes

  • Geochemistry and Petrology
  • Geophysics

Cite this

Holland, C. W., Belcourt, J., Dosso, S., & Dettmer, J. (2019). High resolution quantitative seabed mapping: Exploiting the frequency-domain reflection coefficient. In 81st EAGE Conference and Exhibition 2019 Workshop Programme (81st EAGE Conference and Exhibition 2019 Workshop Programme). EAGE Publishing BV. https://doi.org/10.3997/2214-4609.201901928