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. American Meteorological Society. doi: 10.1175/2010JPO4328.1. ISSN 0022-3670.
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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.
Item URL in elib: | https://elib.dlr.de/65938/ | ||||||||||||||||||||||||
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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: |
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Date: | April 2011 | ||||||||||||||||||||||||
Journal or Publication Title: | Journal of Physical Oceanography | ||||||||||||||||||||||||
Refereed publication: | Yes | ||||||||||||||||||||||||
Open Access: | No | ||||||||||||||||||||||||
Gold Open Access: | No | ||||||||||||||||||||||||
In SCOPUS: | Yes | ||||||||||||||||||||||||
In ISI Web of Science: | Yes | ||||||||||||||||||||||||
Volume: | 41 | ||||||||||||||||||||||||
DOI: | 10.1175/2010JPO4328.1 | ||||||||||||||||||||||||
Page Range: | pp. 708-724 | ||||||||||||||||||||||||
Editors: |
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Publisher: | American Meteorological Society | ||||||||||||||||||||||||
ISSN: | 0022-3670 | ||||||||||||||||||||||||
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: | INVALID USER | ||||||||||||||||||||||||
Deposited On: | 29 Oct 2010 08:00 | ||||||||||||||||||||||||
Last Modified: | 17 Oct 2024 14:48 |
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