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The effect of breaking waves on a co...

University of Rhode Island.

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The effect of breaking waves on a coupled model of wind and ocean surface waves.

Record Type:	Electronic resources : Monograph/item
Title/Author:	The effect of breaking waves on a coupled model of wind and ocean surface waves./
Author:	Kukulka, Tobias.
Description:	183 p.
Notes:	Adviser: Tetsu Hara.
Contained By:	Dissertation Abstracts International68-01B.
Subject:	Physical Oceanography. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3248233

The effect of breaking waves on a coupled model of wind and ocean surface waves.
Kukulka, Tobias.

The effect of breaking waves on a coupled model of wind and ocean surface waves. - 183 p.

Adviser: Tetsu Hara.

Thesis (Ph.D.)--University of Rhode Island, 2006.

Understanding the role of breaking surface waves in air-sea exchange processes is integral to accurate weather and climate modeling. A coupled wind and ocean surface wave model is developed that includes the enhanced form drag of breaking waves. Breaking and non-breaking waves induce air-side fluxes of momentum and energy in a thin layer above the air-sea interface within the constant stress layer (the wave boundary layer). By conserving momentum and energy in the wave boundary layer and wave energy, we derive coupled nonlinear advance-delay differential equations, which govern four physical quantities critical to air-sea transfer processes: the vertical wind profiles of the speed and turbulent stress, the wave height spectrum, and the length distribution of breaking wave crests as a function of wave scale. Introduction of non-dimensional variables elucidates the parameters controlling the momentum fluxes into breaking and non-breaking waves. In order to understand better the coupled wind and wave system, analytic solutions are obtained for limiting cases with either wind input to only breaking or input to only non-breaking waves. To solve the full system of advance-delay differential equations, we developed a numerical method based on two nested iterations. Solutions indicate that the number of breaking waves strongly depends on the sea state. Furthermore, breaking waves may contribute significantly to the total air-sea momentum flux. The breaking wave contribution increases for younger, strongly forced wind waves. This new wind and wave model provides a powerful tool to gain insight into complex coupled wind-wave dynamics.Subjects--Topical Terms:

1019163
Physical Oceanography.

The effect of breaking waves on a coupled model of wind and ocean surface waves.
LDR:02479nmm 2200253 a 45 001 865493
005 20100728
008 100728s2006 ||||||||||||||||| ||eng d
035 $a (UMI)AAI3248233
035 $a AAI3248233
040 $a UMI $c UMI
100 1 $a Kukulka, Tobias. $3 1033929
245 1 4 $a The effect of breaking waves on a coupled model of wind and ocean surface waves.
300 $a 183 p.
500 $a Adviser: Tetsu Hara.
500 $a Source: Dissertation Abstracts International, Volume: 68-01, Section: B, page: 0174.
502 $a Thesis (Ph.D.)--University of Rhode Island, 2006.
520 $a Understanding the role of breaking surface waves in air-sea exchange processes is integral to accurate weather and climate modeling. A coupled wind and ocean surface wave model is developed that includes the enhanced form drag of breaking waves. Breaking and non-breaking waves induce air-side fluxes of momentum and energy in a thin layer above the air-sea interface within the constant stress layer (the wave boundary layer). By conserving momentum and energy in the wave boundary layer and wave energy, we derive coupled nonlinear advance-delay differential equations, which govern four physical quantities critical to air-sea transfer processes: the vertical wind profiles of the speed and turbulent stress, the wave height spectrum, and the length distribution of breaking wave crests as a function of wave scale. Introduction of non-dimensional variables elucidates the parameters controlling the momentum fluxes into breaking and non-breaking waves. In order to understand better the coupled wind and wave system, analytic solutions are obtained for limiting cases with either wind input to only breaking or input to only non-breaking waves. To solve the full system of advance-delay differential equations, we developed a numerical method based on two nested iterations. Solutions indicate that the number of breaking waves strongly depends on the sea state. Furthermore, breaking waves may contribute significantly to the total air-sea momentum flux. The breaking wave contribution increases for younger, strongly forced wind waves. This new wind and wave model provides a powerful tool to gain insight into complex coupled wind-wave dynamics.
590 $a School code: 0186.
650 4 $a Physical Oceanography. $3 1019163
690 $a 0415
710 2 $a University of Rhode Island. $3 1022014
773 0 $t Dissertation Abstracts International $g 68-01B.
790 $a 0186
790 1 0 $a Hara, Tetsu, $e advisor
791 $a Ph.D.
792 $a 2006
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3248233