On the modeling of wave-enhanced turbulence nearshore

Details

• Journal Title:
  Ocean Modelling
• Personal Author:
  Moghimi, Saeed ; Thomson, Jim ; Özkan-Haller, Tuba ; Umlauf, Lars ; Zippel, Seth
• NOAA Program & Office:
  NOS (National Ocean Service) ; OCS (Office of Coast Survey)
• Description:
  A high resolution k–ω two-equation turbulence closure model, including surface wave forcing was employed to fully resolve turbulence dissipation rate profiles close to the ocean surface. Model results were compared with observations from Surface Wave Instrument Floats with Tracking (SWIFTs) in the nearshore region at New River Inlet, North Carolina USA, in June 2012. A sensitivity analysis for different physical parameters and wave and turbulence formulations was performed. The flux of turbulent kinetic energy (TKE) prescribed by wave dissipation from a numerical wave model was compared with the conventional prescription using the wind friction velocity. A surface roughness length of 0.6 times the significant wave height was proposed, and the flux of TKE was applied at a distance below the mean sea surface that is half of this roughness length. The wave enhanced layer had a total depth that is almost three times the significant wave height.
• Source:
  Ocean Modelling, 103, 118-132
• DOI:
  https://doi.org/10.1016/j.ocemod.2015.11.004
• ISSN:
  1463-5003
• Format:
  pdf
• Publisher:
  Elsevier BV
• Document Type:
  Journal Article
• Rights Information:
  Accepted Manuscript
• Compliance:
  Submitted
• Main Document Checksum:
  urn:sha-512:75cb47ddd00c16741f4f104ecc224211e5917014cda957e6445b3c1556c8b7aa4f6d42f0065e85b0f53bc3a1d5ba25a9f9871f9f49af892e9c10ea3e473c7c6b
• Download URL:
  https://repository.library.noaa.gov/view/noaa/71306/noaa_71306_DS1.pdf
• File Type:
  [PDF - 4.55 MB ]