Accession Number : ADA134978

Title :   Columbia River Estuary Hybrid Model Studies. Report 1. Verification of Hybrid Modeling of the Columbia River Mouth.

Descriptive Note : Technical rept. 1976-1981,

Corporate Author : ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS HYDRAULICS LAB

Personal Author(s) : McAnally,W H , Jr ; Brogdon,N J , Jr ; Letter,J V , Jr ; Stewart,J P ; Thomas,W A

PDF Url : ADA134978

Report Date : Sep 1983

Pagination or Media Count : 240

Abstract : The Columbia Hybrid Modeling System was applied to the mouth of the Columbia River estuary to evaluate alternatives for reducing navigation channel maintenance dredging. The hybrid modeling method uses a physical hydraulic model, analytical techniques, and various numerical models in an integrated solution method that takes advantage of the strengths of each technique while avoiding its weaknesses. The methods accounted for the effect of tides, freshwater runoff, wind waves, and littoral currents on sediment transport, deposition, and erosion. The models were verified to satisfactorily reproduce observed prototype behavior.

Descriptors :   *Estuaries, *Dredging, Channels(Waterways), Mathematical models, Hybrid systems, Rivers, Wind, Waves, Tides, Littoral zones, Sediment transport, Deposition

Subject Categories : Civil Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE