elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Impressum | Kontakt | English
Schriftgröße: [-] Text [+]

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 und Dobrynin, Mikhail und Babanin, Alexander V. und Günther, Heinz und 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), Seiten 708-724. AMS. DOI: 10.1175/2010JPO4328.1 . ISSN 1520-0485 (online) 0022-3670 (print).

Dieses Archiv kann nicht den gesamten Text zur Verfügung stellen.

Kurzfassung

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.

Dokumentart:Zeitschriftenbeitrag
Zusätzliche Informationen:Beitrag wurde bereits online als preprint veröffentlicht.
Titel: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
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Pleskachevsky, AndreyNICHT SPEZIFIZIERT
Dobrynin, MikhailGKSS, Germany
Babanin, Alexander V.Swinburne Uni of Technology, Australia
Günther, HeinzGKSS, Germany
Stanev, EmilGKSS, Germany
Datum:April 2011
Erschienen in:Journal of Physical Oceanography
Referierte Publikation:Ja
In SCOPUS:Ja
In ISI Web of Science:Ja
Band:41
DOI :10.1175/2010JPO4328.1
Seitenbereich:Seiten 708-724
Herausgeber:
HerausgeberInstitution und/oder E-Mail-Adresse der Herausgeber
NICHT SPEZIFIZIERTAMS Journals
Verlag:AMS
Name der Reihe:Journal of Physical Oceanography
ISSN:1520-0485 (online) 0022-3670 (print)
Status:veröffentlicht
Stichwörter:Turbulent mixing, SPM
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Weltraum (alt)
HGF - Programmthema:W EO - Erdbeobachtung
DLR - Schwerpunkt:Weltraum
DLR - Forschungsgebiet:W EO - Erdbeobachtung
DLR - Teilgebiet (Projekt, Vorhaben):W - Vorhaben Entwicklung und Erprobung von Verfahren zur Gewässerfernerkundung (alt)
Standort: Berlin-Adlershof , Oberpfaffenhofen
Institute & Einrichtungen:Institut für Methodik der Fernerkundung > Gewässerfernerkundung
Hinterlegt von: Bärbel Bolowski
Hinterlegt am:29 Okt 2010 08:00
Letzte Änderung:26 Feb 2013 15:05

Nur für Mitarbeiter des Archivs: Kontrollseite des Eintrags

Blättern
Suchen
Hilfe & Kontakt
Informationen
electronic library verwendet EPrints 3.3.12
Copyright © 2008-2013 Deutsches Zentrum für Luft- und Raumfahrt (DLR). Alle Rechte vorbehalten.