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| Titel |
On the vortical motions in the Black Sea obtained by the 3-D hydrothermodynamical numerical model |
| VerfasserIn |
D. I. Demetrashvili, D. U. Kvaratskhelia, A. I. Gvelesiani |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7340
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| Digitales Dokument |
URL |
| Erschienen |
In: 2nd EGU Alexander von Humboldt Conference "The role of Geophysics in Natural Disaster Prevention" ; Nr. 14 (2008-04-10), S.295-299 |
| Datensatznummer |
250012117
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| Publikation (Nr.) |
 copernicus.org/adgeo-14-295-2008.pdf |
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| Zusammenfassung |
| Some results of simulation of the Black Sea circulation with consideration
of forcing of different averaged wind types by using 3-D prognostic
baroclinic model are presented. The results allow us to consider all depth
of the sea basin consisting of some relatively homogeneous sub-layers.
Within each of them general circulation processes practically do not change
by depth, but essentially change from layer to layer. Such character of
changeability interpreted by us as a steepness of the Black Sea general
circulation takes place in majority cases of climatic atmospheric wind
forcing. In the present paper results are analyzed on an example of forcing
of January atmospheric cyclonic vortex with ~250 km diameter. Under
such forcing the Ekman surface layer of ~12 m thickness is created.
The cyclonic vortex formed in the east part of the Black Sea, which is
Taylor-Proudman potential vortex with vertical cylindrical configuration, is
described in detail. The vertical distribution of vortex characteristics are
given in figures: Brunt-Väisälä frequency and Richardson number
taken near the vortex wall with maximal velocity. The viable vortexes are
characterized by introduced the universal Reynolds number Re•. |
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