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    Predicting seabed burial of cylinders by wave-induced scour : application to the sandy inner shelf off Florida and Massachusetts

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    Trembanis_etal_JOE2007.pdf (2.926Mb)
    Date
    2007-01
    Author
    Trembanis, Arthur C.  Concept link
    Friedrichs, Carl T.  Concept link
    Richardson, Michael D.  Concept link
    Traykovski, Peter A.  Concept link
    Howd, Peter A.  Concept link
    Elmore, Paul A.  Concept link
    Wever, Thomas F.  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/1811
    As published
    https://doi.org/10.1109/JOE.2007.890958
    DOI
    10.1109/JOE.2007.890958
    Keyword
     Heterogeneous sediment; Inner continental shelf; Mine burial; Real-time forecasts; Scour modeling 
    Abstract
    A simple parameterized model for wave-induced burial of mine-like cylinders as a function of grain-size, time-varying, wave orbital velocity and mine diameter was implemented and assessed against results from inert instrumented mines placed off the Indian Rocks Beach (IRB, FL), and off the Martha’s Vineyard Coastal Observatory (MVCO, Edgartown, MA). The steady flow scour parameters provided by Whitehouse (1998) for self-settling cylinders worked well for predicting burial by depth below the ambient seabed for Ο (0.5 m) diameter mines in fine sand at both sites. By including or excluding scour pit infilling, a range of percent burial by surface area was predicted that was also consistent with observations. Rapid scour pit infilling was often seen at MVCO but never at IRB, suggesting that the environmental presence of fine sediment plays a key role in promoting infilling. Overprediction of mine scour in coarse sand was corrected by assuming a mine within a field of large ripples buries only until it generates no more turbulence than that produced by surrounding bedforms. The feasibility of using a regional wave model to predict mine burial in both hindcast and real-time forecast mode was tested using the National Oceanic and Atmospheric Administration (NOAA, Washington, DC) WaveWatch 3 (WW3) model. Hindcast waves were adequate for useful operational forcing of mine burial predictions, but five-day wave forecasts introduced large errors. This investigation was part of a larger effort to develop simple yet reliable predictions of mine burial suitable for addressing the operational needs of the U.S. Navy.
    Description
    Author Posting. © IEEE, 2007. This article is posted here by permission of IEEE for personal use, not for redistribution. The definitive version was published in IEEE Journal of Oceanic Engineering 32 (2007): 167-183, doi:10.1109/JOE.2007.890958.
    Collections
    • Applied Ocean Physics and Engineering (AOP&E)
    Suggested Citation
    IEEE Journal of Oceanic Engineering 32 (2007): 167-183
     

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