Nonlinearity in crest-trough statistics of Bretschneider seas
- Naval Academy, Annapolis, MD (United States)
Nonlinearity in the statistics of Bretschneider seas is examined both theoretically and experimentally using the concept of crest and trough envelope functions. For fixed threshold levels above and below mean water level, consideration is given to the average number of crests associated with the duration that the crest envelope exceeds this upper level and the average number of troughs associated with the duration that the trough envelope exceeds this lower level. Similar considerations are given to the average number of crests and troughs associated with the interval between the beginnings of such events. Predictions are shown to be in good agreement with laboratory measurements. Theory is also considered for related wave group phenomena, and predictions are likewise shown to be in good agreement with measurements. Nonlinear effects in crest and trough statistics of Bretschneider seas are concluded to be well represented by the relations considered here.
- OSTI ID:
- 55688
- Report Number(s):
- CONF-940230--; ISBN 0-7918-1264-2
- Country of Publication:
- United States
- Language:
- English
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