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High-speed Particle Image Velocimetry Near Surfaces
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Published on: June 24, 2013

Sound speed profile characterization by the image source method.

S Pinson1, L Guillon

  • 1Institut de Recherche de l'Ecole Navale (IRENav), BCRM Brest, CC 600, F-29240 Brest Cedex 9, France. samuel.pinson@ecole-navale.fr

The Journal of the Acoustical Society of America
|October 26, 2010
PubMed
Summary
This summary is machine-generated.

This study introduces a new imaging technique to map shallow seafloor structures using acoustic signals. The method accurately determines seabed layer thickness and sound speed profiles.

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Area of Science:

  • Marine geophysics
  • Acoustic remote sensing
  • Seafloor characterization

Background:

  • Accurate seafloor characterization is crucial for marine operations and geological studies.
  • Existing methods for shallow water geoacoustic profiling have limitations in resolution and data processing.

Purpose of the Study:

  • To present the first results of a novel imaging technique for shallow water seafloor geoacoustic structure.
  • To demonstrate the capability of the technique in recovering seabed geometry and sound speed profiles.

Main Methods:

  • Utilizing a broadband acoustic source and a vertical array for data acquisition.
  • Modeling seabed-reflected acoustic signals as contributions from image sources.
  • Employing a data-driven algorithm combining back-propagation and emitted pulse knowledge for image source mapping.

Main Results:

  • Successful recovery of seabed geometry and sound speed profiles from both synthetic and at-sea data.
  • Accurate determination of layer thickness and sound speed through image source position analysis.
  • Demonstrated satisfactory performance of the developed data-driven algorithm.

Conclusions:

  • The presented imaging technique offers a promising approach for detailed shallow water seafloor investigation.
  • The method effectively maps geoacoustic structures, providing valuable data for marine science and industry.
  • Further application of this technique can enhance our understanding of shallow marine environments.