Physical Oceanography, Vol. 17, No. 3, 2007
NUMERICAL EXPERIMENT AIMED AT MODELING THE HYDROPHYSICAL
FIELDS IN THE SEA OF MARMARA WITH REGARD FOR BOSPORUS AND
S. G. Demyshev and S. V. Dovgaya
We performed a long-term prognostic experiment aimed at the investigation of the process of
formation of the hydrodynamic structure of the Sea-of-Marmara waters with regard for the influ-
ence of Bosporus and Dardanelles. It is shown that the mutual adaptation of hydrophysical fields
and their adjustment to the physical and geographical conditions of the sea proceed as a result of
the action of rapid (tens of days) and slow (several tens of years) mechanisms of adaptation. An
S-like jet current directed from Bosporus to Dardanelles was formed. Two stable anticyclonic
formations are well visible in the central part of the sea. In deeper layer, an abyssal jet current
was formed as a result of penetration of heavy Mediterranean waters. The established specific
features of the circulation of waters in the Sea of Marmara are confirmed by the data of obser-
vations. We conclude that the principal features of the dynamics of waters in the Sea of Mar-
mara are formed under the influence of two straits.
The Sea of Marmara is an intermediate basin between the Black and Mediterranean Seas. The transport of
salty and warm Mediterranean waters to the Black Sea and colder less salty Black-Sea waters to the Mediterran-
ean Sea is realized through the Sea of Marmara. Hence, the adequate modeling of circulation in the Sea of Mar-
mara would enable one to correctly reproduce the characteristics of waters coming to Bosporus and Dardanelles
and, hence, to the Black and Mediterranean Seas.
In the available literature, the number of numerical experiments aimed at the simulation of hydrophysical
fields in the Sea of Marmara is quite small. Thus, a simplified box model is proposed in  for the description
of the vertical distribution of properties of the Sea-of-Marmara waters. In , one can find a model of the dy-
namics of the Turkish strait system (Dardanelles, Sea of Marmara, and Bosporus) based on the assessment of the
flow rates of seawater according to the Knudsen relations specifying the equilibrium state of the budgets of water
In the present work, we use the numerical nonlinear three-dimensional model proposed in [3, 4]. The mo-
del is specially adapted to the conditions of the Sea of Marmara with regard for the presence of Bosporus and
Dardanelles. On the basis of the indicated model, we performed a long-term prognostic experiment aimed at the
analysis of the formation of the circulation of waters in the Sea of Marmara under the action of momentum, salt,
and heat fluxes through the straits. As a result, we establish the principal regularities of the hydrological struc-
ture of the Sea-of-Marmara waters confirmed by the available data of observations.
Marine Hydrophysical Institute, Ukrainian Academy of Sciences, Sevastopol.
Translated from Morskoi Gidrofizicheskii Zhurnal, No.
28–41, May–June, 2007. Original article submitted August 3, 2005; re-
vision submitted November 29, 2005.
0928-5105/07/1703–0141 © 2007 Springer Science+Business Media, Inc. 141