EM 1110-2-1100 (Part II)
(Change 1) 31 July 2003
with the constraint that no wave period can grow past a limiting value as shown by Vincent (1985). This
limiting wave period is simply approximated by the relationship
1
d
2
Tp . 9.78
(II-2-39)
g
In cases with extreme amounts of material in the water column (for example sediment, vegetation, man-made
structures, etc.), it is likely that the dissipation rate of wave energy will become very large. In such cases,
Camfield's work (1977) may be used as a guideline for estimating frictional effects on wave growth and
dissipation; however, it should be recognized that little experimental evidence exists to confirm the exact
values of these dissipation rates.
(2) Prediction of deepwater waves from nomograms. Figures II-2-23 through II-2-26 are wave
prediction nomograms under fetch-limited and duration-limited conditions. The curves in these nomograms
are based on Equations II-2-30 and II-2-36 through II-2-38 presented previously in this section. The
asymptotic upper limits in both cases provide information on the fully developed wave heights as a function
of wind speed. The same information can be obtained more expediently via the ACES Program.
Figure II-2-23.
Fetch-limited wave heights
II-2-46
Meteorology and Wave Climate
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