Bruce John G.

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Bruce
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John G.
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  • Technical Report
    Somali eddy formation during the commencement of the southwest monsoon, 1978
    (Woods Hole Oceanographic Institution, 1981-07) Bruce, John G. ; Quadfasel, Detlef R. ; Swallow, John
    An early stage of the Somali eddy circulation was mapped in the period May 29 to June 13, 1978, using expendable bathythermograph data at closely spaced stations. By this time the SW monsoon had been blowing at 5°N for about 4 weeks and the large anticyclonic eddy in the northern Somali Basin was clearly discernible between 3°N and 10°N. It is estimated that the offshore transport at this time was approximately half of that occurring during the period when the eddy reaches maximum size and strength during August and September. A smaller southern eddy was observed just offshore between the equator and 3°N.
  • Technical Report
    A note on some uses of Θ-S sections
    (Woods Hole Oceanographic Institution, 1981-09) Bruce, John G.
    Isohalines plotted against temperature and horizontal distance along a hydrographic section can be used to observe changes in the T-S or Θ-S relationship of water masses. By using this technique, eddies formed off the Somali coast during the southwest monsoon, or Gulf Stream eddies having their own individual T-S characteristics, may be identified.
  • Technical Report
    XBT observations between 10⁰N - 10⁰S in the Atlantic from ships-of-opportunity, complemented by AXBT surveys
    (Woods Hole Oceanographic Institution, 1987-10) Bruce, John G.
    A description and listing of 82 XBT sections of 61 stations each from ships-of-opportunity between 10°N-10°S in the Atlantic Ocean from January 1980 to January 1986 is presented. This work was associated with the SEQUAL program. A temperature-depth figure for each section is given with surface temperature, salinity, and6~ and wind data. Complimentary AXBT observations during two 1983 surveys are also presented.
  • Technical Report
    Eddies off the Somali coast during the southwest monsoon
    (Woods Hole Oceanographic Institution, 1980-11) Bruce, John G.
    The development and decay of the large eddy in the northern Somali Basin and its smaller associated eddies each southwest monsoon in the northwestern Indian Ocean has been monitored for four consecutive years by a time series of temperature sections obtained along the tanker sea lane across the Somali Basin. The evidence suggests that the large eddy first forms between 4°N to 12°N during late May and tends to remain approximately in this location throughout the entire southwest monsoon.
  • Technical Report
    Current studies off Plantagenet Bank
    (Woods Hole Oceanographic Institution, 1961-06) Bruce, John G.
    A series of current measurements were made southwest of Plantagenet Bank. Bermuda from October 5-18, 1959, at various depths ranging from 5 fathoms to the bottom in water depths of from 40 to over 1000 fathoms. With the exception of the bottom measurements which were made with a camera type current meter, all the current measurements were made with parachute drogues. The magnitude of the currents ranged from 1 knot at 5 fathoms to less than 0.02 knot just off the bottom and the direction of flow was generally southeast. The somewhat erratic behavior in the movement of the drogues just south of the bank seemed to indicate turbulent flow in this region. The currents do not seem to be tidal in nature, but during the period of measurement flowed fairly consistently in one direction. perhaps indicating association with the Gulf Stream.