Modification of Nearshore Currents by Coastal Structures PDF Download

Author: James H. Saylor
Publisher:
ISBN:
Category : Coastal engineering
Languages : en
Pages : 20

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Author: James H. Saylor
Publisher:
ISBN:
Category :
Languages : en
Pages : 17

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This paper describes and presents the results of water current studies conducted along the shores of Lakes Superior, Michigan, and Erie. The studies have been made at various harbor locations with the purpose of establishing current magnitudes and patterns within the harbors and in the adjacent coastal areas, and relating the measured currents with the causative forces.

Author: Antonio Fernando Garcez Faria
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 182

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The objective of this dissertation is to develop numerical models and compare their predictions with data acquired during the DUCK94 experiment in order to improve our physical understanding of the hydrodynamic processes governing the vertical and cross shore distributions of both longshore and cross shore currents over a barred beach. The vertical structure of the mean longshore current is found to be well described by a logarithmic profile and a relationship between bed shear stress and bottom roughness, including the influence of ripples and mega-ripples, was also found. The vertical structure of the mean cross shore current (undertow) is modeled using an eddy viscosity closure scheme to solve for the turbulent shear stress and includes contributions from breaking wave rollers. These models of the vertical profiles of longshore and cross shore mean currents are combined to formulate a quasi three dimensional model to describe the cross shore distribution of the longshore current. This model includes turbulent mixing due to the cross shore advection of mean momentum of the longshore current by the mean cross shore current and contributions from wave rollers.

Author: International Organization for Standardization
Publisher:
ISBN:
Category : Ocean waves
Languages : en
Pages : 96

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Author: Robert G. Dean
Publisher: Cambridge University Press
ISBN: 9780521602754
Category : Nature
Languages : en
Pages : 498

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Text on coastal engineering and oceanography covering theory and applications intended to mitigate shoreline erosion.

Author: Hans Hanson
Publisher:
ISBN:
Category : Coast changes
Languages : en
Pages : 60

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Author: Wyman Harrison
Publisher:
ISBN:
Category : Ocean currents
Languages : en
Pages : 34

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Simultaneous measurements by Eulerian and Lagrangian methods were made continuously between 30 July and 5 August 1962. The survey zone extended southward along the shore 11.5 km (7.2 mi.) from the Cape Henry Light and offshore for a distance of 1.4 km (0.87 mi.). Three Roberts Radio Current Meter Stations were established along the seaward margin of the zone; five stations were established on shore for longshore-current and wave measurements. Wave heights for the 7-day period ranged between 0.3 and 0.5 m, wave lengths between 14 and 159 m, and wave energies between 6.3 and 553 kg-m/m. Winds were less than 16 mph during the period, total wind movements being greatest from the east and southeast. Shoaling waves made angles with the shore line that should have resulted in a southward longshore current during 48 of 69 observations, on a coast uninfluenced by other currents. Direction of longshore current movement was measured as northerly in 55 instances, owing to tidal and nontidal currents. (Author).

Author: Gerard P. Lennon
Publisher:
ISBN:
Category : Ocean currents
Languages : en
Pages : 232

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Author: Francisco Eduardo da Ponte Sancho
Publisher:
ISBN:
Category : Coast changes
Languages : en
Pages : 638

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Author: Taerim Kim
Publisher:
ISBN:
Category : Beach erosion
Languages : en
Pages : 142

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