EM 1110-2-1100 (Part II)
(Change 1) 31 July 2003
Figure II-2-24.
Fetch-limited wave periods (wind speeds are plotted in increments of 2.5 m/s)
(3) Prediction of shallow-water waves. Rather than providing separate nomograms for shallow-water
wave generation, the following procedure is recommended for estimating waves in shallow basins:
Determine the straight-line fetch and over-water wind speed.
!
Using the fetch and wind speed from (1), estimate the wave height and period from the deepwater
!
nomograms.
Compare the predicted peak wave period from (2) to the shallow-water limit given in Equation II-2-
!
39. If that wave period is greater than the limiting value, then reduce the predicted wave period to
this value. The wave height may be found by noting the dimensionless fetch associated with the
limiting wave period and substituting this fetch for the actual fetch in the wave growth calculation.
If the predicted wave period is less than the limiting value, then retain the deepwater values from
!
(2).
If wave height exceeds 0.6 times the depth, wave height should be limited to 0.6 times the depth.
!
c.
Parametric prediction of waves in hurricanes.
Meteorology and Wave Climate
II-2-47
Previous Page
