

 OUTPUT:
   fetch_struct = fetch structure containing fetch as a function of angle and free surface 
                  height.  Angle is defined using Cartesian Wind Stress.  Thus the fetch 
                  corresponding to an angle of pi/2 (90 degrees) is the
                  fetch corresponding to a South wind (wind from South
                  with Northward wind stress)

 EXAMPLE USAGE

 Author(s):  
    Geoff Cowles (University of Massachusetts Dartmouth)

 Revision history
   
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