EFFECT OF UNCONSOLIDATED SEDIMENT RIGIDITY ON LOW FREQUENCY ACOUSTIC PROPAGATION.

J. H. Beebe, Charles Holland

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

2 Citations (Scopus)

Abstract

Most unconsolidated ocean sediments have been reported to possess small, but finite, rigidity. In sandy sediments rigidity is due to sliding and rolling friction resulting from the interlocking grain structure; in silt clays rigidity is due to cohesion. For many marine environments acoustic propagation is not measurably affected by sediment rigidity. In some environments, however, the effect of sediment rigidity is the dominant mechanism in modal attenuation. Two coastal regions on the Scotian shelf will be contrasted by comparing the effects of sediment shear wave excitation on transmission loss at low frequency. The key environmental factor in unconsolidated sediment shear wave excitation is not the intrinsic sediment properties but the degree of elastic contrast found in the acoustic field.

Original languageEnglish (US)
Title of host publicationMarine Science (Plenum)
EditorsTuncay Akal, Jonathan M. Berkson
PublisherPlenum Press
Pages207-215
Number of pages9
ISBN (Print)0306422662
StatePublished - Dec 1 1986

Publication series

NameMarine Science (Plenum)
Volume16
ISSN (Print)0160-273X

Fingerprint

Rigidity
Sediments
Acoustics
Shear waves
Silt
Crystal microstructure
Acoustic fields
Clay
Friction

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Beebe, J. H., & Holland, C. (1986). EFFECT OF UNCONSOLIDATED SEDIMENT RIGIDITY ON LOW FREQUENCY ACOUSTIC PROPAGATION. In T. Akal, & J. M. Berkson (Eds.), Marine Science (Plenum) (pp. 207-215). (Marine Science (Plenum); Vol. 16). Plenum Press.
Beebe, J. H. ; Holland, Charles. / EFFECT OF UNCONSOLIDATED SEDIMENT RIGIDITY ON LOW FREQUENCY ACOUSTIC PROPAGATION. Marine Science (Plenum). editor / Tuncay Akal ; Jonathan M. Berkson. Plenum Press, 1986. pp. 207-215 (Marine Science (Plenum)).
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Beebe, JH & Holland, C 1986, EFFECT OF UNCONSOLIDATED SEDIMENT RIGIDITY ON LOW FREQUENCY ACOUSTIC PROPAGATION. in T Akal & JM Berkson (eds), Marine Science (Plenum). Marine Science (Plenum), vol. 16, Plenum Press, pp. 207-215.

EFFECT OF UNCONSOLIDATED SEDIMENT RIGIDITY ON LOW FREQUENCY ACOUSTIC PROPAGATION. / Beebe, J. H.; Holland, Charles.

Marine Science (Plenum). ed. / Tuncay Akal; Jonathan M. Berkson. Plenum Press, 1986. p. 207-215 (Marine Science (Plenum); Vol. 16).

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

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N2 - Most unconsolidated ocean sediments have been reported to possess small, but finite, rigidity. In sandy sediments rigidity is due to sliding and rolling friction resulting from the interlocking grain structure; in silt clays rigidity is due to cohesion. For many marine environments acoustic propagation is not measurably affected by sediment rigidity. In some environments, however, the effect of sediment rigidity is the dominant mechanism in modal attenuation. Two coastal regions on the Scotian shelf will be contrasted by comparing the effects of sediment shear wave excitation on transmission loss at low frequency. The key environmental factor in unconsolidated sediment shear wave excitation is not the intrinsic sediment properties but the degree of elastic contrast found in the acoustic field.

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Beebe JH, Holland C. EFFECT OF UNCONSOLIDATED SEDIMENT RIGIDITY ON LOW FREQUENCY ACOUSTIC PROPAGATION. In Akal T, Berkson JM, editors, Marine Science (Plenum). Plenum Press. 1986. p. 207-215. (Marine Science (Plenum)).