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This study introduces a new method for estimating marine sediment interval velocities using a monostatic configuration. The technique accurately determines sediment layer velocities, validated with simulated and real-world data.

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Area of Science:

  • Marine geophysics
  • Seismic exploration

Background:

  • Traditional interval velocity estimation requires varying source-receiver offsets.
  • A monostatic configuration offers a potentially simpler alternative.

Purpose of the Study:

  • To develop and validate a novel method for estimating marine sediment interval velocities using a monostatic sonar configuration.
  • To assess the accuracy of this method with simulated and real-world marine data.

Main Methods:

  • Utilizing a monostatic sonar setup for data acquisition.
  • Applying a new processing technique to estimate interval velocities from monostatic data.
  • Validating the method with simulated rough layered seabeds and real data from the Gulf of Lion.

Main Results:

  • Interval velocities were estimated with less than 1% error using simulated data.
  • The method successfully processed monostatic multibeam data from the Gulf of Lion.
  • An interval velocity of 1569 m/s was determined for an 18m sediment layer, consistent with independent core and wide-angle reflection data.

Conclusions:

  • The monostatic configuration method provides accurate marine sediment interval velocity estimations.
  • This technique offers a viable alternative to traditional offset-based methods for shallow marine sediment characterization.