• Login
    About WHOAS
    View Item 
    •   WHOAS Home
    • Woods Hole Oceanographic Institution
    • Academic Programs
    • WHOI Theses
    • View Item
    •   WHOAS Home
    • Woods Hole Oceanographic Institution
    • Academic Programs
    • WHOI Theses
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of WHOASCommunities & CollectionsBy Issue DateAuthorsTitlesKeywordsThis CollectionBy Issue DateAuthorsTitlesKeywords

    My Account

    LoginRegister

    Statistics

    View Usage Statistics

    Surface-referenced current meter measurements

    Thumbnail
    View/Open
    Santala_Thesis (7.834Mb)
    Date
    1991-09
    Author
    Santala, Markku J.  Concept link
    Metadata
    Show full item record
    Citable URI
    https://hdl.handle.net/1912/1731
    Location
    38°38.93'N, 123°29.38'W
    38°38.83'N, 123°29.27'W
    DOI
    10.1575/1912/1731
    Keyword
     Surface waves; Ocean currents 
    Abstract
    A general discussion of possible techniques for observation of near-surface currents indicates that the surface-following frame of reference will provide several advantages over the Eulerian or Lagrangian frames. One problem with surface-following measurements is the biasing effects of the waves. A technique for making unbiased measurements is developed. This technique requires that both the sensor velocity and the fluid velocity be measured. A sensor platform, the Surface Acoustic Shear Sensor (SASS), which makes the required measurements is described. The processing scheme for interpreting the measurements from the SASS is described at length. The data that SASS has obtained from two deployments in the Shelf Mixed Layer Experiment (SMILE) is presented. This data shows clearly that the biasing effects of waves can not, in general, be ignored. In the summary of the data we find surprisingly little shear in the downwind direction in the top 4m of the water column. In the crosswind direction observed, observed shear seems to be indicative of an across shelf pressure gradient and intense near-surface mixing.
    Description
    Submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy at the Massachusetts Institute of Technology and the Woods Hole Oceanographic Institution September 1991
    Collections
    • WHOI Theses
    • Applied Ocean Physics and Engineering (AOP&E)
    Suggested Citation
    Thesis: Santala, Markku J., "Surface-referenced current meter measurements", 1991-09, DOI:10.1575/1912/1731, https://hdl.handle.net/1912/1731
     

    Related items

    Showing items related by title, author, creator and subject.

    • Thumbnail

      Near-surface ocean current sensors : problems and performance 

      McCullough, James R. (Woods Hole Oceanographic Institution, 1979-12)
      When current meters are used to measure mean horizontal currents in surface gravity waves, immunity to the vertical component of flow is important, even though the net vertical flow averages to zero and is normal to the ...
    • Thumbnail

      Surface and bottom boundary layer dynamics on a shallow submarine bank : southern flank of Georges Bank 

      Werner, Sandra R. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1999-08)
      The thesis investigates the circulation at a 76-m deep study site on the southern flank of Georges Bank, a shallow submarine bank located between the deeper Gulf of Maine and the continental slope. Emphasis is placed on ...
    • Thumbnail

      North Brazil Current Rings Experiment : surface drifter data report, November 1998-June 2000 

      Glickson, Deborah A.; Fratantoni, David M.; Wooding, Christine M.; Richardson, Philip L. (Woods Hole Oceanographic Institution, 2000-07)
      This data report summarzes 45 surface drifter trajectories collected between November 1998 and June 2000 as part of the North Brazil Current (NBC) Rings Experiment. NBC rings have been proposed as one of several important ...
    All Items in WHOAS are protected by original copyright, with all rights reserved, unless otherwise indicated. WHOAS also supports the use of the Creative Commons licenses for original content.
    A service of the MBLWHOI Library | About WHOAS
    Contact Us | Send Feedback | Privacy Policy
    Core Trust Logo