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SPECIFIC ACOUSTIC IMPEDANCE OF FERROMANGANESE NODULES AT EIGHT KILOHERTZ

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Date Issued:
1976
Summary:
Ferromanganese nodules are small, irregular lumps of precipitated metal oxides composed primarily of manganese, iron, copper, cobalt, and nickel which accrete in deep ocean environments. The nodules have mining value and commercial recovery is expected in the near future. As present techniques for the detection and evaluation of ferromanganese nodule deposits are cumbersome and time consuming, an investigation of the specific acoustic impedance of the nodules is conducted in an effort to determine the feasibility of surveying ferromanganese nodule deposits via side-scan sonar techniques. An acoustic transmission line (impedance tube) is utilized to investigate the specific acoustic impedance of the ferromanganese nodule samples. The accuracy of the experimental technique is evaluated using a steel reference cylinder. Results of the tests (on the ferromanganese samples) indicate that the specific acoustic impedance of a typical ferromanganese nodule sample is 2.07 +- .15 x 106 Rayls. Suggestions for future investigations are also presented.
Title: THE SPECIFIC ACOUSTIC IMPEDANCE OF FERROMANGANESE NODULES AT EIGHT KILOHERTZ.
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Name(s): GARDNER, DAVID LEE
Florida Atlantic University, Degree grantor
Davidson, J. Blaine, Thesis advisor
Type of Resource: text
Genre: Electronic Thesis Or Dissertation
Issuance: monographic
Date Issued: 1976
Publisher: Florida Atlantic University
Place of Publication: Boca Raton, Fla.
Physical Form: application/pdf
Extent: 95 p.
Language(s): English
Summary: Ferromanganese nodules are small, irregular lumps of precipitated metal oxides composed primarily of manganese, iron, copper, cobalt, and nickel which accrete in deep ocean environments. The nodules have mining value and commercial recovery is expected in the near future. As present techniques for the detection and evaluation of ferromanganese nodule deposits are cumbersome and time consuming, an investigation of the specific acoustic impedance of the nodules is conducted in an effort to determine the feasibility of surveying ferromanganese nodule deposits via side-scan sonar techniques. An acoustic transmission line (impedance tube) is utilized to investigate the specific acoustic impedance of the ferromanganese nodule samples. The accuracy of the experimental technique is evaluated using a steel reference cylinder. Results of the tests (on the ferromanganese samples) indicate that the specific acoustic impedance of a typical ferromanganese nodule sample is 2.07 +- .15 x 106 Rayls. Suggestions for future investigations are also presented.
Identifier: 13822 (digitool), FADT13822 (IID), fau:10650 (fedora)
Collection: FAU Electronic Theses and Dissertations Collection
Note(s): College of Engineering and Computer Science
Thesis (M.S.E.)--Florida Atlantic University, 1976.
Subject(s): Ferromanganese--Analysis
Acoustic impedance--Instruments
Held by: Florida Atlantic University Libraries
Persistent Link to This Record: http://purl.flvc.org/fcla/dt/13822
Sublocation: Digital Library
Use and Reproduction: Copyright © is held by the author, with permission granted to Florida Atlantic University to digitize, archive and distribute this item for non-profit research and educational purposes. Any reuse of this item in excess of fair use or other copyright exemptions requires permission of the copyright holder.
Use and Reproduction: http://rightsstatements.org/vocab/InC/1.0/
Host Institution: FAU
Is Part of Series: Florida Atlantic University Digital Library Collections.