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  • 1
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    Woods Hole Oceanographic Institution
    Publication Date: 2022-05-25
    Description: Leg 6 of CHAIN Cruise 115 began in Rio de Janeiro on 22 April 1974, and terminated in Recife on 18 May 1974. A multi-disciplinary scientific program was carried out within the Vema Channel and on the northern flanks of the Rio Grande Rise (see Figure 1). Personnel and scientific programs representing several institutions (W.H.O.I., Scripps, Lamont-Doherty) were included in the project; Brazilian observers representing PETROBRAS and the National Research Council also participated in the program.
    Description: Prepared for the National Science Foundation under Grant GA-41186. Financial support for shipboard operations and most of the scientific programs during Leg 6 of CHAIN Cruise 115 was provided under National Science Foundation grant GA-41185. Seismic profiling and bathymetry were supported under O.N.R. Contract N00014-66-C-0241. Bottom current measurements received support under N.S.F. Grant No. GA-41285 to W. Patzert and to J.L. Reid (Scripps). Support for the Lamont-Doherty nephelometer program was provided under O.N.R. Contract N00014-67-A-0108-0004 and N.S.F. Grant GA-27281. Supplementary equipment items required for the transponder navigation system were provided by the Woods Hole Ocean Industry Program.
    Keywords: Ocean bottom ; Ocean currents ; Rio Grande
    Repository Name: Woods Hole Open Access Server
    Type: Technical Report
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  • 2
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    Woods Hole Oceanographic Institution
    Publication Date: 2022-05-26
    Description: Also published as: Buoy Technology, Transactions 2nd International Buoy Technology Symposium/Exposition, Washington, D.C., September 18-20, 1967, pp.409-418, 1967.
    Description: Since January 1965,a program has been underway at the Woods Hole Oceanographic Institution, to measure currents at a limited number of fixed sites on a year round basis. Initially, one site was instrumented with both surface and subsurface moorings. The program has now been expanded to 4 major sites, extending along 70°W, from 39°20 ' N to the Hatteras Abyssal Plain at 30°N . In nearly three years of operation, a total of 65 moorings have been placed at the working sites, for periods up to six months. Recoveries from these sites have provided many velocity records of excellent quality. The repetitive exposure of moorings of essentially similar design under relatively standardized conditions has served to define clearly the design and operational problems that are inherent in such a program. A brief account is given of some of the problems encountered in routine buoy setting operations, and some of the results obtained from the measurements.
    Description: The Office of Naval Research under Contract N00014-66-C0241~ NR 083-004.
    Keywords: Ocean currents ; Oceanographic buoys
    Repository Name: Woods Hole Open Access Server
    Type: Technical Report
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  • 3
    Publication Date: 2022-05-26
    Description: The journal of a cruise of R/V CHAIN from Bermuda to Freetown, Sierra Leone during February and March, 1961, is the basis of this report. Location of observations are given. The portion of the Mid- Atlantic Ridge lying along the equator was surveyed from 10° to 19°W, and new information concerning the slope and orientation of rift zones was obtained. A detailed bathymetric survey of the Romanche Trench was made. A continuous temperature-depth profile, from the surface to 100 meters, was made along the ship 's track with a thermistor chain. Surface shear was measured with pitotmeters mounted on the chain (surface water velocity relative to the water velocity at the depth of the pitotmeter), to determine the strength and direction of the equatorial undercurrent.
    Description: The Office of Naval Research under Contract Nonr-, 2196 (00)
    Keywords: Ocean currents ; Mid-Atlantic Ridge ; Romanche Trench
    Repository Name: Woods Hole Open Access Server
    Type: Technical Report
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