Capabilities in Harbor Design and Monitoring: A Case Study
Abstract
As waves travel into harbors from deep water, nonlinear processes transfer energy from the wind wave frequencies to long waves with periods on the order of several minutes. Harbor resonance is the phenomenon which occurs when the resonant periods of a harbor are equal or close to forced or incident wave periods. When the harbor is subject to these resonant periods, the amplitude of oscillations increase until the energy loss balances the energy input from the energy sources. The resonant mode with the longest period is the Helmholtz or pumping mode because the water appears to move up and down unison throughout the harbor. Shorter period modes are characterized by an increasing number of nodes and antinodes within the harbor. Harbor resonance should be avoided or minimized in harbor planning and operation to reduce adverse effects such as hazardous navigation and mooring of vessels, deterioration of structures, and sediment deposition or erosion within the harbor.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1992
- Accession Number
- ADA591700
Entities
Organizations
- Coastal Engineering Research Center