<abstract xmlns="http://www.w3.org/1999/xhtml">

 In this paper, the classical problem of horizontal waveinduced momentum transport is analyzed once again. A new analytical approach has been employed to reveal the vertical variation of this transport in the Eulerian description.
In mathematical terms, this variation is shown to have (after “smoothing out” the surface corrugation) the character of a generalized function (distribution) and is described by a classical function in the water depths and by an additional Dirac-delta-function component on the averaged free surface. 
In terms of physics, the considered variation consists of two entities: (i) a continuous distribution of the mean momentum transport flux density (tensorial radiation pressure) over the entire water column, and (ii) an additional momentum transport flux concentrated on the mean free surface level (tensorial radiation surface pressure). Simple analytical formulae describing this variation have been derived. 
This allowed a conventional expression to be derived, describing the depth-integrated excess of horizontal momentum flux due to the presence of waves (the so-called “radiation stress”), confirming to some extent the correctness of the whole analysis carried out. 
The results obtained may be important to the ocean dynamics, especially in view of their possible application in the field of hydrodynamics of wave-dominated coastal zones.
</abstract>

In this paper, the classical problem of horizontal waveinduced momentum transport is analyzed once again. A new analytical approach has been employed to reveal the vertical variation of this transport in the Eulerian description.
In mathematical terms, this variation is shown to have (after “smoothing out” the surface corrugation) the character of a generalized function (distribution) and is described by a classical function in the water depths and by an additional Dirac-delta-function component on the averaged free surface. 
In terms of physics, the considered variation consists of two entities: (i) a continuous distribution of the mean momentum transport flux density (tensorial radiation pressure) over the entire water column, and (ii) an additional momentum transport flux concentrated on the mean free surface level (tensorial radiation surface pressure). Simple analytical formulae describing this variation have been derived. 
This allowed a conventional expression to be derived, describing the depth-integrated excess of horizontal momentum flux due to the presence of waves (the so-called “radiation stress”), confirming to some extent the correctness of the whole analysis carried out. 
The results obtained may be important to the ocean dynamics, especially in view of their possible application in the field of hydrodynamics of wave-dominated coastal zones.

A note on the vertical distribution of momentum transport in water waves

Oceanological and Hydrobiological Studies

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"A note on the vertical distribution of momentum transport in water waves"}

In this paper, the classical problem of horizontal waveinduced momentum transport is analyzed once again. A new analytical approach has been employed to reveal...

A note on the vertical distribution of momentum transport in water waves

Publié en ligne: 09 déc. 2015

Pages: 563 - 568

Reçu: 16 mai 2014

Accepté: 18 juin 2015

DOI: https://doi.org/10.1515/ohs-2015-0053

Mots clés
radiation stress, coastal zone, wave-induced currents, momentum transport, three-dimensional modeling

© 2015 Faculty of Oceanography and Geography, University of Gdansk, Poland

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

A note on the vertical distribution of momentum transport in water waves

Publié en ligne: 09 déc. 2015

Pages: 563 - 568

Reçu: 16 mai 2014

Accepté: 18 juin 2015

DOI: https://doi.org/10.1515/ohs-2015-0053

Mots clésradiation stress, coastal zone, wave-induced currents, momentum transport, three-dimensional modeling

© 2015 Faculty of Oceanography and Geography, University of Gdansk, Poland

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Mots clés
radiation stress, coastal zone, wave-induced currents, momentum transport, three-dimensional modeling