Measurement of viscoelastic properties of some recent marine sediments by a torsionally oscillating cylinder method
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Authors
Kramer, Steven Barker
Subjects
Marine sediments
Properties marine sediments
Acoustic reflection coefficient
Shear modulus sediments
Dynamic rigidity sediments
Properties marine sediments
Acoustic reflection coefficient
Shear modulus sediments
Dynamic rigidity sediments
Advisors
Andrews, Robert S.
Date of Issue
1973-09
Date
September 1973
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
Abstract
A torsionally oscillating cylindrical probe method, operating in the frequency range of 0.8 to 3.3 kHz was employed for measuring the viscoelastic properties of 13 marine samples collected by Shipek grab from shallow water regions of Monterey Bay, California. Other mass physical properties such as wet density, porosity, sound speed, sand-silt-clay-gravel percentages, mean grain size and sorting were also measured.
Limited precision of impedance measurements permitted only the determination of the mechanical resistance due to the probe contact with the sediment. The observed values for various sediments ranged up to a value 65 times the lowest value. Correlations between mechanical resistance and mass physical properties are studied by graphical means with results indicating that water content of sediments is a determining factor in the mechanical resistance of a sediment. A dependence of mechanical resistance upon frequency is observed.
Type
Thesis
Description
Series/Report No
Department
Oceanography
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
Format
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.