Stanbrough J. H.

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Stanbrough
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J. H.
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  • Technical Report
    Experimental VLF relative navigation on R/V Atlantis II, cruise 15
    (Woods Hole Oceanographic Institution, 1966-11) Stanbrough, J. H.
    An experimental long-range relative navigation system was employed on the Research Vessel ATLANTIS II of the Woods Hole Oceanographic Institution during Cruise 8 to the Indian Ocean in 1963 and Cruise 15 which circumnavigated the globe in 1965. The very low frequencies (VLF) transmitted by stations having stab1lized carriers (a few part s in 10 11) can be received throughout the world. Navigational information is obtained from the comparison of the received signals of two or more stations with a precision oscillator which serves as a reference. Geographical changes result in phase changes which may be computed to longitude and latitude if the starting point is known; thus, the system is relative. Reference points could be supplied to the VLF system from a satellite radio navigator that was loaned to the U.S. Navy for this cruise. Best positioning agreed to within three nautical miles from best ship's position under favorable conditions. The VLF equipment also was able to provide (l) a measure of ship's drift on station, (2) precise time and frequencies, and (3) a means for calibrating the ship's EM log at sea.
  • Technical Report
    Atlantic oceanography conducted during the period July 1, 1962 -June 30, 1963
    (Woods Hole Oceanographic Institution, 1963-09) Stanbrough, J. H.
    In July 1962 a short cruise was made on CHAIN to investigate the hypothesis (Worthington 1962) that the major circulation of the North Atlantic is divided into two anti-cyclonic eddies or gyres. Evidence from International Geophysical Year data indicated that the thermocline water east of the Grand Banks had different characteristics from Sargasso Sea water. In particular, the dissolved oxygen content throughout the thermocline was at a much higher level in the more northerly waters than in the Sargasso Sea. It was deduced from this that the Gulf Stream, which transports a large volume of water of the Sargasso Sea type, does not turn south around the Tail of the Banks, but that the strong, narrow currents found to the East of the Banks transport water of different origin.