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https://hdl.handle.net/11681/7479| Title: | Los Angeles and Long Beach Harbors Model Enhancement Program: long waves and harbor resonance analysis |
| Authors: | Seabergh, William C. Thomas, Leonette J. |
| Keywords: | Harbor resonance Long Beach Harbor Long waves Los Angeles Harbor Moored ship motion Seiching |
| Publisher: | Coastal and Hydraulics Laboratory (U.S.) Engineer Research and Development Center (U.S.) |
| Series/Report no.: | Technical report CHL ; 99-20. |
| Description: | Technical report Long-period wave data have been collected at an offshore wave gauge and seven harbor gauges for over 8 years in the Los Angeles/Long Beach Harbor region. These data are being used in studies for the design of expansion of the harbors. In particular, the data have been used to select long-period spectra for reproduction in a physical model of the harbors. The analysis of prototype wave data indicated correlation between the long-wave spectrum and the short-wave spectrum. Information was examined to determine the effect of the source of the short-period waves (Southern Hemisphere swell, hurricanes, or winter storms, typically from the west) on the nature of the long-period component of the waves. Relationships between the origin of the wave energy and long-wave period were determined. Wave statistics were used to interpret effects of the energy level on the wave transformation into the harbors and correlate long-wave and short-wave spectra. Examination of a 5- to 22-sec short-wave period and a 30- to 400-sec long-wave period indicated correlation of smaller short-wave periods with smaller long-wave periods, and larger short-wave periods with larger long-wave periods. Observations of moored-ship motion level was correlated to long-wave energy in a harbor basin. |
| Rights: | Approved for public release; distribution is unlimited. |
| URI: | http://hdl.handle.net/11681/7479 |
| Appears in Collections: | Technical Report |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| TR-CHL-99-20.pdf | 7.49 MB | Adobe PDF |  View/Open |