• Login
    About WHOAS
    View Item 
    •   WHOAS Home
    • Woods Hole Oceanographic Institution
    • Physical Oceanography (PO)
    • View Item
    •   WHOAS Home
    • Woods Hole Oceanographic Institution
    • Physical Oceanography (PO)
    • 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

    Transport and dynamics of the Panay Sill overflow in the Philippine Seas

    Thumbnail
    View/Open
    2010jpo4395.1.pdf (9.215Mb)
    Date
    2010-12
    Author
    Tessler, Zachary D.  Concept link
    Gordon, Arnold L.  Concept link
    Pratt, Lawrence J.  Concept link
    Sprintall, Janet  Concept link
    Metadata
    Show full item record
    Citable URI
    https://hdl.handle.net/1912/4346
    As published
    https://doi.org/10.1175/2010JPO4395.1
    DOI
    10.1175/2010JPO4395.1
    Keyword
     Transport; Dynamics; Topographic effects; Currents; Empirical orthogonal functions 
    Abstract
    Observations of stratification and currents between June 2007 and March 2009 reveal a strong overflow between 400- and 570-m depth from the Panay Strait into the Sulu Sea. The overflow water is derived from approximately 400 m deep in the South China Sea. Temporal mean velocity is greater than 0.75 m s−1 at 50 m above the 570-m Panay Sill. Empirical orthogonal function analysis of a mooring time series shows that the flow is dominated by the bottom overflow current with little seasonal variance. The overflow does not descend below 1250 m in the Sulu Sea but rather settles above high-salinity deep water derived from the Sulawesi Sea. The mean observed overflow transport at the sill is 0.32 × 106 m3 s−1. The observed transport was used to calculate a bulk diapycnal diffusivity of 4.4 × 10−4 m2 s−1 within the Sulu Sea slab (575–1250 m) ventilated from Panay Strait. Analysis of Froude number variation across the sill shows that the flow is hydraulically controlled. A suitable hydraulic control model shows overflow transport equivalent to the observed overflow. Thorpe-scale estimates show turbulent dissipation rates up to 5 × 10−7 W kg−1 just downstream of the supercritical to subcritical flow transition, suggesting a hydraulic jump downstream of the sill.
    Description
    Author Posting. © American Meteorological Society, 2010. This article is posted here by permission of American Meteorological Society for personal use, not for redistribution. The definitive version was published in Journal of Physical Oceanography 40 (2010): 2679–2695, doi:10.1175/2010JPO4395.1.
    Collections
    • Physical Oceanography (PO)
    Suggested Citation
    Journal of Physical Oceanography 40 (2010): 2679–2695
     

    Related items

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

    • Thumbnail

      Inner-shelf ocean dynamics and seafloor morphologic changes during Hurricane Sandy 

      Warner, John C.; Schwab, William C.; List, Jeffrey H.; Safak, Ilgar; Liste, Maria; Baldwin, Wayne E. (Elsevier, 2017-02-17)
      Hurricane Sandy was one of the most destructive hurricanes in US history, making landfall on the New Jersey coast on October 30, 2012. Storm impacts included several barrier island breaches, massive coastal erosion, and ...
    • Thumbnail

      Nitrogen dynamics in a small arctic watershed: retention and downhill movement of 15N 

      Yano, Yuriko; Shaver, Gaius R.; Giblin, Anne E.; Rastetter, Edward B.; Nadelhoffer, Knute J. (2009-06-12)
      We examined short- and long-term nitrogen (N) dynamics and availability along an arctic hillslope in Alaska, USA, using stable isotope of nitrogen (15N), as a tracer. Tracer levels of 15NH4+ were sprayed once onto the ...
    • Thumbnail

      Fluxes, dynamics and chemistry of particulates in the ocean 

      Gardner, Wilford D. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1977-10)
      Sediment traps designed to yield quantitative data of particulate fluxes have been deployed and successfully recovered on four moorings in the deep sea. The traps were designed after extensive calibration of different ...
    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