Estimating Velocity Ratio in Marine Sediment

Abstract

Presented in this letter are least-squares regression relationships between velocity ratio (R; the ratio between surficial sediment sound speed and bottom water sound speed) and sediment mean grain size (Mz, phi units), porosity (eta, %), and density (rho, kg/cu m). The relationships are R = 1.296- 0.0601 Mz + 0.00283 Mz sq; R = 1.675 - 0.01639 eta + 9.762 10 to the minus 5th power eta sq; and R = 1.513- 0.000824 rho + 3.2249X 10 to the minus 7th power rho sq. These equations, respectively, explain 91.6%, 88.0%, and 86.4% of the variation observed in velocity ratio. Velocity ratio relationships are more convenient than those previously available because they do not require temperature and pressure correction to in situ conditions. Keywords: Acoustic velocity; Reprints. (edc)

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1990
Accession Number
ADA223943

Entities

People

  • Richard T. Bachman

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Acoustic Measurement
  • Acoustic Propagation
  • Acoustic Velocity
  • Bottom Waters
  • Equations
  • Grain Size
  • Measurement
  • New York
  • Numbers
  • Physical Properties
  • Porosity
  • Regression Analysis
  • Seabed
  • Sediments
  • Standards
  • Statistics
  • Water

Readers

  • Fluid Dynamics.
  • Pulsed Power and Plasma Physics.
  • Regression Analysis.