In situ Measurement of Sediment Sound Speed During Coring

Abstract

A system was developed for attachment to sediment corers to obtain an in situ sound speed profile during a coring operation. The system uses two electroacoustic transducers mounted in the cutting head of the corer and associated electronic circuitry to measure the travel time of an acoustic pulse traversing the diameter of the sediment core. Laboratory and field tests which demonstrate the capabilities of the measurement technique are reported. Sound speed profiles were obtained in the Gulf of Mexico using a piston corer and in coastal waters using a special shallow water coring rig. Limited examination of the feasibility of measuring acoustic attenuation and volume scattering is also reported.

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Document Details

Document Type
Technical Report
Publication Date
Mar 14, 1973
Accession Number
AD0758659

Entities

People

  • Aubrey L. Anderson
  • Donald J. Shirley
  • Loyd D. Hampton

Organizations

  • University of Texas at Austin

Tags

Communities of Interest

  • Advanced Electronics
  • Sensors

DTIC Thesaurus Topics

  • Accuracy
  • Acoustic Properties
  • Acoustic Velocity
  • Acoustics
  • Attenuation
  • Converters
  • Electronics
  • Generators
  • Grain Size
  • Materials
  • Measurement
  • Physical Properties
  • Power Amplifiers
  • Shallow Water
  • Shell Scripts
  • Thermal Expansion
  • Transducers

Readers

  • Acoustical Oceanography.
  • Aerospace Test and Evaluation
  • Manufacturing Engineering.

Technology Areas

  • Microelectronics
  • Microelectronics - Microelectromechanical Systems