Current Search: Davidson, J. Blaine (x)
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Title
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THE SPECIFIC ACOUSTIC IMPEDANCE OF FERROMANGANESE NODULES AT EIGHT KILOHERTZ.
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Creator
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GARDNER, DAVID LEE, Florida Atlantic University, Davidson, J. Blaine
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Abstract/Description
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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...
Show moreFerromanganese 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.
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Date Issued
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1976
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PURL
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http://purl.flvc.org/fcla/dt/13822
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Subject Headings
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Ferromanganese--Analysis, Acoustic impedance--Instruments
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Format
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Document (PDF)
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Title
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APPLICATION OF A MICROPROCESSOR TO ACOUSTIC DATA SAMPLING AND MANAGEMENT TASKS (AS APPLIED TO MANGANESE NODULE MINING).
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Creator
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MURPHY, DAVID PAUL, JR., Florida Atlantic University, Davidson, J. Blaine, College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
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Abstract/Description
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Methods of collecting information about the deep ocean sediments are considered. A compact, flexible data collection and management system based on microprocessor technology is developed. The hardware of the system is detailed and a typical software operating system is presented which controls sensor operations, stores temporary data and communicates with a shipboard computer system.
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Date Issued
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1979
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PURL
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http://purl.flvc.org/fcla/dt/13987
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Subject Headings
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Microprocessors, Marine sediments--Sampling, Manganese nodules
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Format
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Document (PDF)