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Turbulent mixing due to surface waves indicated by remote sensing of suspended particulate matter and its implementation into coupled modeling of waves, turbulence and circulation

Pleskachevsky, Andrey and Dobrynin, Mikhail and Babanin, Alexander V. and Günther, Heinz and Stanev, Emil (2011) Turbulent mixing due to surface waves indicated by remote sensing of suspended particulate matter and its implementation into coupled modeling of waves, turbulence and circulation. Journal of Physical Oceanography, 41 (4), pp. 708-724. AMS. DOI: 10.1175/2010JPO4328.1 . ISSN 1520-0485 (online) 0022-3670 (print).

Full text not available from this repository.

Abstract

This paper studies the impact of the surface waves on the turbulent mixing. The satellite observations of Suspended Particulate Matter (SPM) at ocean surface as an indicator of turbulent quantities of the flow are used. In a water column, SPM builds a vertical profile depending on settling velocities of the particles and on vertical mixing processes, thus SPM is a perfect marker to study the turbulent quantities of the flow. Satellite observations in the North Sea show that surface SPM concentrations, in locations of its deposition, grow rapidly and build plume-shaped, long (many km) uninterrupted and consistent structures during a storm. Also, satellites reveal that SPM rapidly sinks to the seabed after the storm peak has passed and wave height decreases, i.e. with absence of strong turbulence. The non-breaking wave-induced turbulence has been discussed, parameterized and implemented into an equation of evolution of turbulent kinetic energy (TKE) in the frame of mean-flow concept, which can be used in existing circulation models. The ratio between dissipated and total wave energy is used to describe the influence of wave dumping on the mean flow. Our numerical tests reproduce experiments in a wave tank very well and are supported by observations of SPM in the North Sea. Our results show that the motion of an individual non-breaking wave includes turbulent fluctuations if the critical Reynolds number for wave motion is exceeded, independent from presence of currents due to wind or tides. These fluctuations can produce high diffusivity and strongly influences mixing in the upper water layer of the ocean.

Document Type:Article
Additional Information:Beitrag wurde bereits online als preprint veröffentlicht.
Title:Turbulent mixing due to surface waves indicated by remote sensing of suspended particulate matter and its implementation into coupled modeling of waves, turbulence and circulation
Authors:
AuthorsInstitution or Email of Authors
Pleskachevsky, AndreyUNSPECIFIED
Dobrynin, MikhailGKSS, Germany
Babanin, Alexander V.Swinburne Uni of Technology, Australia
Günther, HeinzGKSS, Germany
Stanev, EmilGKSS, Germany
Date:April 2011
Journal or Publication Title:Journal of Physical Oceanography
Refereed publication:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:41
DOI:10.1175/2010JPO4328.1
Page Range:pp. 708-724
Editors:
EditorsEmail
UNSPECIFIEDAMS Journals
Publisher:AMS
Series Name:Journal of Physical Oceanography
ISSN:1520-0485 (online) 0022-3670 (print)
Status:Published
Keywords:Turbulent mixing, SPM
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):W - Vorhaben Entwicklung und Erprobung von Verfahren zur Gewässerfernerkundung (old)
Location: Berlin-Adlershof , Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > Marine Remote Sensing
Deposited By: Bärbel Bolowski
Deposited On:29 Oct 2010 08:00
Last Modified:26 Feb 2013 15:05

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