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  • 1
    Publication Date: 2022-05-25
    Description: This report describes computer program NOYFB, a method of determining the static configuration of sub-surface oceanographic moorings for the purposes of system design and analysis of performance. The program is written in Fortran II for the W.H.O.I. Hewlett-Packard 2100 series shipboard computer systems. The user acts as computer operator in a decision-making capacity, specifying, evaluating and modifying the mooring composition and control and environmental parameters. Operating instructions and the program listing are included as appendices.
    Description: Prepared for the Office of Naval Research under Contract N00014-66-C-0241; NR 083-004.
    Keywords: Sub-surface moorings ; Mooring design and analysis ; Computer program
    Repository Name: Woods Hole Open Access Server
    Type: Technical Report
    Format: 4364848 bytes
    Format: application/pdf
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  • 2
    Publication Date: 2022-05-26
    Description: Figures 37 and 38 have been reduced from their original size for the purpose of scanning.
    Description: During March/April 1976 the small-scale structure of the Antarctic Polar Front was observed in the Drake Passage. The observations were part of the International Southern Ocean Studies (ISOS) program called FDRAke 76. The purpose of the program was to obtain densely sampled measurements of temperature, salinity, dissolved oxygen, and chemical nutrients in the Polar Front Zone (PFZ) and pilot measurements of horizontal and vertical velocities in order to explain the above scalar variability. The PFZ is a region where Antarctic and sub-Antarctic waters intermingle and presumably mix to affect the properties of Antarctic Intermediate Water. A report on the third leg of Cruise 107 of the R. V. THOMPSON is presented as well as a description of the measurements and a preliminary report of the data. A feature of interest is the pinching off of a northward meander of the circumpolar current system into a cyclonic ring of Antarctic Waters.
    Description: Prepared for the National Science Foundation, Office for the International Decade of Ocean Exploration, under Grant OCE75-14056 and the International Southern Ocean Studies (ISOS) Program.
    Keywords: International Southern Ocean Studies ; Fronts ; Thomas G. Thompson (Ship) Cruise TN107
    Repository Name: Woods Hole Open Access Server
    Type: Technical Report
    Format: application/pdf
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  • 3
    Publication Date: 2022-05-26
    Description: This report describes a system for underwater acoustic navigation developed, and in use, at the Woods Hole Oceanographic Institution. It includes a brief discussion of the electronic components, operation, mathematical analysis, and available computer programs. There is a series of supplementary Technical Memoranda containing more information on various aspects of the system. We believe that this kind of documentation is more flexible and better meets the needs of potential users than including all technical details in one large volume. These are not final or definitive reports; acoustic navigation capabilities will continue to evolve at W.H.O.I. for some time. Acoustic navigation provides a method of tracking a ship, and an underwater vehicle or instrument package (‘fish’), in the deep ocean. Acoustic devices attached to the ship and fish measure the length of time it takes a sound pulse to travel to acoustic transponders moored on the ocean floor. If the transponder positions and the average speed of sound are known, the ship or fish position can be found.
    Description: Prepared for the Office of Naval Research under Contracts N00014-71-C0284; NR 293-008 N00014-70-C0205; NR 263-103 and the National Science Foundation/International Decade of Ocean Exploration Grant GX-36024 and the Applied Physics Laboratory of The Johns Hopkins University Contract 372111.
    Keywords: Alvin (Submarine) ; Underwater navigation ; Underwater acoustics
    Repository Name: Woods Hole Open Access Server
    Type: Technical Report
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  • 4
    Publication Date: 2022-05-26
    Description: This study first reviews both the electrical and mechanical modes and causes of failure of electromechanical (E/M) cables used to lower deep sea sensors, such as CTD instruments, from oceanographic ships. It then outlines measures or steps that could be taken to correct some of the deficiencies observed and improve the systems presently used. These measures include quality control, tests, operational limits, improved handling and maintenance, improved machinery. The study then surveys alternative cables for lowering the sensors and convey the information from the sensors back to the ship. These alternatives include strength members other than steel (Kevlar)and signal carriers other than conventional copper conductors (fiber optics). The final section - Conclusions - summarizes the recommendations, based on this study, for improving the reliability of present and future CTD lowering systems.
    Description: Prepared for the Office of Naval Research under Contract N00014-7l6-C-0197; NR 083-400.
    Keywords: Cables ; Fiber optics
    Repository Name: Woods Hole Open Access Server
    Type: Technical Report
    Format: application/pdf
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