A DYNAMIC ROUGHNESS EQUATION AND ITS APPLICATION TO WIND STRESS DETERMINATION AT THE AIR-SEA INTERFACE

A dynamic roughness equation including major wind and wave interaction parameters (wind shear velocity, wave height, and phase velocity) is derived. Because this equation implicitly incorporates the effects of wave steepness, relative water depth, and wind duration and fetch, it may be applied to a wide variety of natural conditions. This equation was used to construct a nomogram which can be utilized to determine the wind stress at the sea surface, given phase velocities, wave heights, and the wind verified by the available field and laboratory data under near-neutral atmospheric stability conditions from which the appropriate parameters could be determined. (Author)

• Supplemental Notes:
  • Also available in the Journal of Physical Oceanography, Vol. 4, No. 1; pp 116-120, Jan. 1974.
• Corporate Authors:

  Louisiana State University, Baton Rouge

  Coastal Studies Institute
  Baton Rouge, LA  United States 
• Authors:
  • Hsu, S A
• Publication Date: 1973-8-28

Media Info

• Pagination: 9 p.

Subject/Index Terms

• TRT Terms: Shear stress; Velocity; Water waves; Wind waves
• Old TRIS Terms: Sea surface characteristics; Velocity profiles
• Subject Areas: Design; Hydraulics and Hydrology; Marine Transportation;

Filing Info

• Accession Number: 00057211
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: TR-159 Tech Rpt.
• Contract Numbers: N00014-69A-0211-0003
• Files: TRIS
• Created Date: Aug 16 1974 12:00AM