Channel Effects in Harbor Resonance

by George F. Carrier, Gordon McKay Prof. of Mech. Engrg.; Harvard Univ., Cambridge, MA,
Richard P. Shaw, Prof.; Fac. of Engrg. and Appl. Sci., State Univ. of New York at Buffalo; leave as ESSA Postdoctoral Research Assoc., Joint Tsunami Research Effort, Hawaii Inst. of Geophysics, Univ. of Hawaii, HI,
Moto Miyata, Asst. in Oceanography; Univ. of Hawaii, HI,

Serial Information: Journal of the Engineering Mechanics Division, 1971, Vol. 97, Issue 6, Pg. 1703-1716

Document Type: Journal Paper


The effect of an entrance channel on the response of narrow-mouthed harbors to long periodic incident water waves is examined by means of an approximate approach developed previously by the writers. A channel effect analogous to harbor paradox of Miles and Munk is found and explained in terms of a Helmholtz resonator. Calculations are given for specific harbor geometries and indicate a lowering and crowding together of harbor resonance frequencies and an increase in amplification as the entrance channel length increases.

Subject Headings: Ports and harbors | Resonance | Water waves | Geometrics | Frequency response

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