Physical Oceanography, Vol. 17, No. 4, 2007
SEASONAL FRESHENING AND SALINIZATION OF WATERS
IN THE KARKINIT BAY
L. D. Pukhtyar
On the basis on the experimental hydrological data accumulated in the database of the Marine
Hydrophysical Institute of the Ukrainian National Academy of Sciences and the meteorological
data of the Marine Department of the Ukrainian Scientific-Research Hydrometeorological Insti-
tute, we study the characteristics of seasonal variability of the processes of renewal, freshening,
and salinization of waters in the Karkinit Bay. We analyze and estimate the repeatability of the
inflows of salt and freshened waters from the sea as well as the variations of the areas occupied
by these waters in the water area of the bay depending on the seasonal and wind conditions. For
the spring–summer period, we estimate the period of renewal of waters in the upper layer of the
main part of the bay
(11–14 days). A time interval of possible absence of noticeable water ex-
change between the main and east shallow parts of the bay (of about two months) is revealed in
the summer–autumn period.
Up to 2001, the level of knowledge about the Karkinit Bay was mainly determined by the available data on
the structure and dynamics of waters in the entire northwest part of the Black Sea. Thus, we can mention only
several works [1–4] devoted to the investigation of some specific features of the thermochaline structure, dy-
namics, and variability of waters in the Karkinit Bay and its regions. These works were carried out in 1968–
1988 and do not enable one to get a realistic and reliable picture of the processes running in the bay. The works
performed by the Department of Contact Methods of Investigations at the Marine Hydrophysical Institute of the
Ukrainian National Academy of Sciences in 2001–2005 and devoted to the investigation of the Karkinit Bay
made it possible to accumulate additional data about this important region in the northwest part of the Black Sea
. The significance of this region for the national economy has sharply increased in recent years characterized
by the intensification of both the utilization of biological resources of the bay and the research works aimed at oil
and gas prospecting and production. It should also be emphasised that the Sivash free economical zone is loc-
ated on the coast of the bay in its easternmost part. As a result, the anthropogenic impacts upon the bay signifi-
cantly increase, especially in its east shallow part characterized by the discharge of large amounts of untreated
industrial and agricultural wastes. Under the existing conditions of increasing anthropogenic impacts, the know-
ledge of the self-cleaning potential of the bay and, in particular, of its water exchange with the neighboring regi-
ons of the sea becomes extremely important.
The Karkinit Bay occupies a significant water area in the northwest part of the Black Sea. Its length in the
north–south direction (from the Tendrovskaya Spit to Cape Tarkhankut) is equal to 130
and in the west–east
km. Its depth does not exceed
1–3). The north coast of the Karkinit Bay goes
along the Tendrovskaya Spit and Dzharylgach Island and reaches the head of the bay called the Perekopskii Bay.
Its south coast is formed by the northwest coast of the Crimea (to the east of Cape Tarkhankut).
Marine Hydrophysical Institute, Ukrainian Academy of Sciences, Sevastopol.
Translated from Morskoi Gidrofizicheskii Zhurnal, No.
24–39, July–August, 2007. Original article submitted October 18, 2005;
revision submitted February 10, 2006.
0928-5105/07/1704–0209 © 2007 Springer Science+Business Media, Inc. 209