Accession Number : ADA207536

Title :   Selected Topics in Hydrodynamics of Harbors and the Nearshore.

Descriptive Note : Final rept. 1 Oct 81-30 Sep 88,

Corporate Author : SCRIPPS INSTITUTION OF OCEANOGRAPHY LA JOLLA CA

Personal Author(s) : Jenkins, Scott A.

Report Date : 1989

Pagination or Media Count : 355

Abstract : This report resulting from research on selected topics pertaining to the hydrodynamics and sediment transport physics in harbors and the adjacent nearshore. An initial focus on the mechanics of eddy transport of fine sediments into the turning station at Naval Station Mayport, Florida. The report 'Eddy transport of fine sediments into a closed basin', seek to explain why these eddies always appear on the basin side of the interface and advances a theory that they exhibit a precession phenomena which ultimately transports suspended sediments into the turning basin. 'The action of sea level inequalities upon sediment influx events at Mayport Naval Station' describes measurements of this sea level inequality and seeks to explain its cause and effect on the shoaling of the turning basin. Dynamics of Settling Flock Layers in Navy Harbors lead to further analysis on the Mayport data set which led to an alternate solution to the shoaling problem involving lengthening the inlet jetties and approach jetties to the turning basin itself. This work led to the conceptualization of resuspending fine sediments to prevent siltation in shipping channels by means of the vortex trail behind a wingfoil near the bottom. Some of the preliminary results of the vortex foil experiments at Mare Island Naval Shipyard were presented in systems for reducing sedimentation in berthing facilities. (JHD)

Descriptors :   *CHANNELS(WATERWAYS), *HARBORS, *SEDIMENT TRANSPORT, BASINS(GEOGRAPHIC), DATA BASES, DYNAMICS, EDDIES(FLUID MECHANICS), FOILS(MATERIALS), HYDRODYNAMICS, INSHORE AREAS, NAVAL SHORE FACILITIES, SEA LEVEL, SEDIMENTATION, SEDIMENTS, SHIPPING, SOLUTIONS(GENERAL), SUSPENDED SEDIMENTS, VORTICES.

Subject Categories : Civil Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE