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Coastal Engineering, 2006
Rip currents are shore-normal, narrow, seaward-flowing currents that originate within surf zone, extend seaward of the breaking region (rip head), and can obtain relatively high velocities. Within the last decade, there have been a significant number of laboratory and field observations within rip current systems.
MacMahan, Jamie H. +2 more
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Rip currents are shore-normal, narrow, seaward-flowing currents that originate within surf zone, extend seaward of the breaking region (rip head), and can obtain relatively high velocities. Within the last decade, there have been a significant number of laboratory and field observations within rip current systems.
MacMahan, Jamie H. +2 more
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Journal of Fluid Mechanics, 2001
A laboratory experiment involving rip currents generated on a barred beach with periodic rip channels indicates that rip currents contain energetic low-frequency oscillations in the presence of steady wave forcing. An analytic model for the time-averaged flow in a rip current is presented and its linear stability characteristics are investigated to
Haller, Merrick C., Dalrymple, R. A.
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A laboratory experiment involving rip currents generated on a barred beach with periodic rip channels indicates that rip currents contain energetic low-frequency oscillations in the presence of steady wave forcing. An analytic model for the time-averaged flow in a rip current is presented and its linear stability characteristics are investigated to
Haller, Merrick C., Dalrymple, R. A.
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PULSING AND CIRCULATION IN RIP CURRENT SYSTEM
Coastal Engineering 2004, 2005Current pulsations from a longshore bar and trough rip system located on the eastern coast of Moreton Island, Australia are presented. These pulsations occur over 10-20minute intervals through the rip system and are correlated to both water level gradients and wave energy variations.
Callaghan, D. +5 more
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Hydrodynamic Instability Mechanism for Rip Currents
Studies in Applied Mathematics, 2015On reexamining the hydrodynamic instability, Yu [1] showed that when the fully dynamical interactions are duly accounted for, and proper mathematical analysis is carried out, the positive feedback between the wave and evolving current can initiate and sustain rip current circulations with scales comparable to field observations on alongshore uniform ...
Yu, Jie, Chen, Siyu
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Journal of Geophysical Research, 1973
The dynamics of rip currents is investigated using a set of shallow water equations with a horizontal eddy viscosity term. A boundary layer analysis is introduced based on the observed fact that rip currents are rather narrow. Similarity solutions of the model equations are found which seem to give reasonable representations of the velocity profile and
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The dynamics of rip currents is investigated using a set of shallow water equations with a horizontal eddy viscosity term. A boundary layer analysis is introduced based on the observed fact that rip currents are rather narrow. Similarity solutions of the model equations are found which seem to give reasonable representations of the velocity profile and
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The Journal of Geology, 1958
Under certain conditions of near-shore slope and wave activity, the major seaward drainage of water which has been moved toward the beach in waves and breakers is in the form of rip currents. These currents are particularly well developed along the coast of New South Wales, where they exhibit a systematic form.
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Under certain conditions of near-shore slope and wave activity, the major seaward drainage of water which has been moved toward the beach in waves and breakers is in the form of rip currents. These currents are particularly well developed along the coast of New South Wales, where they exhibit a systematic form.
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Journal of the Oceanographical Society of Japan, 1976
Mass, momentum and energy conservation laws, including the radiation stress, are used to derive an equation of the eigenvalues of rip current spacing. A coastal region with linear bottom slope is divided into two parts: Offshore region and surfzone separated by the breaker line.
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Mass, momentum and energy conservation laws, including the radiation stress, are used to derive an equation of the eigenvalues of rip current spacing. A coastal region with linear bottom slope is divided into two parts: Offshore region and surfzone separated by the breaker line.
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Field Measurements of Rip Currents
1989The objectives of this task were to measure the characteristics of the nearshore circulation system at both field experimental sites and to develop a predictive model to: (1) identify conditions where rip currents occur, (2) provide information on the characteristics (spacing, strength, etc.) of these currents, and, (3 ...
Ernest C.-S. Tang, Robert A. Dalrymple
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A note on the dynamics of rip currents
Journal of Geophysical Research, 1962A vorticity equation is applied to the flow of a rip current that transports water seaward through a surf zone. If a column of water stretches vertically as it moves into deeper water, the magnitude of the vorticity will increase along the streamline. An approximate solution indicates that the width of the current decreases as the depth increases. This
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