Wave-current interaction near the Gulf Stream during the Surface Wave Dynamics Experiment

1994 ◽  
Vol 99 (C3) ◽  
pp. 5065 ◽  
Author(s):  
David W. Wang ◽  
Antony K. Liu ◽  
Chih Y. Peng ◽  
Eric A. Meindl
Keyword(s):  
Surface Wave ◽  
Gulf Stream ◽  
Wave Dynamics ◽  
Current Interaction

Surface wave dynamics off Mumbai coast, north-eastern Arabian Sea

2018 ◽  
Vol 69 (1) ◽  
pp. 29-42 ◽  
Author(s):  
V. Sanil Kumar ◽  
Jesbin George ◽  
Udhaba Dora ◽  
Muhammed Naseef
Keyword(s):  
Surface Wave ◽  
Arabian Sea ◽  
Wave Dynamics ◽  
North Eastern ◽  
Eastern Arabian Sea

scholarly journals Wave–Current Interaction between Hurricane Matthew Wave Fields and the Gulf Stream

2019 ◽  
Vol 49 (11) ◽  
pp. 2883-2900 ◽  
Author(s):  
Christie A. Hegermiller ◽  
John C. Warner ◽  
Maitane Olabarrieta ◽  
Christopher R. Sherwood
Keyword(s):  
Gulf Stream ◽  
Large Scale ◽  
Water Levels ◽  
Ocean Currents ◽  
Coastal Hazards ◽  
South Atlantic Bight ◽  
Tightly Coupled ◽  
Current Interaction ◽  
The Right ◽  
The U.S

AbstractHurricanes interact with the Gulf Stream in the South Atlantic Bight (SAB) through a wide variety of processes, which are crucial to understand for prediction of open-ocean and coastal hazards during storms. However, it remains unclear how waves are modified by large-scale ocean currents under storm conditions, when waves are aligned with the storm-driven circulation and tightly coupled to the overlying wind field. Hurricane Matthew (2016) impacted the U.S. Southeast coast, causing extensive coastal change due to large waves and elevated water levels. The hurricane traveled on the continental shelf parallel to the SAB coastline, with the right side of the hurricane directly over the Gulf Stream. Using the Coupled Ocean–Atmosphere–Wave–Sediment Transport modeling system, we investigate wave–current interaction between Hurricane Matthew and the Gulf Stream. The model simulates ocean currents and waves over a grid encompassing the U.S. East Coast, with varied coupling of the hydrodynamic and wave components to isolate the effect of the currents on the waves, and the effect of the Gulf Stream relative to storm-driven circulation. The Gulf Stream modifies the direction of the storm-driven currents beneath the right side of the hurricane. Waves transitioned from following currents that result in wave lengthening, through negative current gradients that result in wave steepening and dissipation. Wave–current interaction over the Gulf Stream modified maximum coastal total water levels and changed incident wave directions at the coast by up to 20°, with strong implications for the morphodynamic response and stability of the coast to the hurricane.

scholarly journals Observations of radar backscatter at Ku and C bands in the presence of large waves during the Surface Wave Dynamics Experiment

1995 ◽  
Vol 33 (3) ◽  
pp. 708-721 ◽  
Author(s):  
S.V. Nghiem ◽  
F.K. Li ◽  
Shu-Hsiang Lou ◽  
G. Neumann ◽  
R.E. McIntosh ◽  
...  
Keyword(s):  
Surface Wave ◽  
Radar Backscatter ◽  
Wave Dynamics

scholarly journals Control and Stabilization of the Gulf Stream by Oceanic Current Interaction with the Atmosphere

2016 ◽  
Vol 46 (11) ◽  
pp. 3439-3453 ◽  
Author(s):  
Lionel Renault ◽  
M. Jeroen Molemaker ◽  
Jonathan Gula ◽  
Sebastien Masson ◽  
James C. McWilliams
Keyword(s):  
Gulf Stream ◽  
Surface Stress ◽  
Numerical Models ◽  
Geostrophic Wind ◽  
Current Feedback ◽  
Ocean Surface Currents ◽  
Oceanic Eddy ◽  
Current Interaction ◽  
The Mean ◽  
The Tropics

AbstractThe Gulf Stream (GS) is known to have a strong influence on climate, for example, by transporting heat from the tropics to higher latitudes. Although the GS transport intensity presents a clear interannual variability, satellite observations reveal its mean path is stable. Numerical models can simulate some characteristics of the mean GS path, but persistent biases keep the GS separation and postseparation unstable and therefore unrealistic. This study investigates how the integration of ocean surface currents into the ocean–atmosphere coupling interface of numerical models impacts the GS. The authors show for the first time that the current feedback, through its eddy killing effect, stabilizes the GS separation and postseparation, resolving long-lasting biases in modeled GS path, at least for the Regional Oceanic Modeling System (ROMS). This key process should therefore be taken into account in oceanic numerical models. Using a set of oceanic and atmospheric coupled and uncoupled simulations, this study shows that the current feedback, by modulating the energy transfer from the atmosphere to the ocean, has two main effects on the ocean. On one hand, by reducing the mean surface stress and thus weakening the mean geostrophic wind work by 30%, the current feedback slows down the whole North Atlantic oceanic gyre, making the GS narrower and its transport weaker. Yet, on the other hand, the current feedback acts as an oceanic eddy killer, reducing the surface eddy kinetic energy by 27%. By inducing a surface stress curl opposite to the current vorticity, it deflects energy from the geostrophic current into the atmosphere and dampens eddies.

Some Consequences of the Three-Dimensional Current and Surface Wave Equations

2005 ◽  
Vol 35 (11) ◽  
pp. 2291-2298 ◽  
Author(s):  
George Mellor
Keyword(s):  
Energy Transfer ◽  
Surface Wave ◽  
General Circulation ◽  
Wave Equations ◽  
Three Dimensional ◽  
General Circulation Models ◽  
Turbulence Energy ◽  
Surface Gravity Wave ◽  
Research Issues ◽  
Current Interaction

Abstract Three-dimensional, interacting current and surface gravity wave equations have recently been derived and compared with their counterpart vertically integrated equations; they are in the form of sigma-coordinate equations. The purpose of this paper is to examine some of the consequences of these equations including energy transfer between mean energy, wave energy, and turbulence energy, to frame some outstanding research issues, to provide a Cartesian version of the sigma-coordinate equations, and to compare with other formulations of wave–current interaction. In general, the paper is intended to set the stage for the development of numerical coupled surface wave and three-dimensional general circulation models. These models often include a flow-dependent turbulence-based viscosity.

Sign in / Sign up

Export Citation Format

Share Document