Oceanography Department
Professor Aleksei E. Bukatov - Head of Oceanography Department
Scientists - 20; Post-graduate students - 5; Engineers - 7;
Technician - 2
Basic scientific directions
 study of
regularities of formation of thermohaline and kinematic structures
of the World ocean waters based of field data and theoretical
methods of calculation;
revealing of
physical regularities of formation of spatial-temporal structure of
hydrophysical fields and cause-effect relations of their
changeability with the atmospheric processes and regional
conditions;.
development,
unification and adaptation of physical-mathematical models to the
regional conditions; elaboration of the methods of research of
oceanographic fields in the regions of specific features (fronts and
vortex structures, peculiarities of temperature regime and bottom
relief, area of fast, close and open-pack ice).
Projects
“Research of the ocean as an energetic and dynamic global system to
prognose climate changes, weather, navigation conditions and to
realize marine technologies” (code “ Environment” );
“Research of spatial-temporal variability of hydrophysical fields and
interaction processes in the ocean-atmosphere system” (code “
Ocean-atmosphere” );
“Research of climate changes in the ocean-atmosphere-lithosphere
system on global and regional scales” (code “ Ocean-climate” );
“State program of researches of Ukraine in Antarctic ”);
“Interdisciplinary researches of fundamental processes in the
conditions of intensive anthropogenic load, regional and global
climate changes” (code “ Ecosystem ”);
“Research of regularities of functioning of shelf ecosystems in the
conditions of anthropogenic and technogenic loads” (code “ Shelf” );
“Present state of the Black Sea shelf area and recommendations on
use of mineral and recreational resources” (code “Shelf resources”
);
“Development of a computer information-analytical system to provide
engineering-oceanological works in the region of oil-gas fields in
the northwestern Black Sea” (code “ Information resources” ).
Results
Peculiarities of hydrophysical fields, thermocline structure and
dynamics of the Caribbean basin waters and the Southern subtropical
anticyclonic gyre are revealed. Regularities of formation and
variability of the Sargasso Sea synoptic vortex formations are
investigated. Complex studies of shelf fronts, meteorological and
oceanological processes in the Guinean sector of the Atlantic Ocean
were conducted. Typical seasonal cycle of variability of basic
hydrophysical fields in the Tropical Atlantic is characterized and
the mechanisms of heat transport in the subtropical latitudes are
analyzed. Conditions of "subduction" of water masses in southeast
part of the North Atlantic are studied. New experimental data on
thermohaline and kinematic water structures in the zones of the
arctic fronts and fishery regions in the Antarctic sector of the
Atlantic Ocean were obtained. Spatial-temporal dynamics of
large-scale fronts in the South Atlantic was analyzed based on
hydrological and satellite data. Large-scale hydrological-acoustic
structure of the Atlantic Ocean waters is classified.
Vertical structure of geostrophic currents in the Black Sea and
in the western Tropical Atlantic is investigated. Peculiarities of
the vertical structure of internal waves, temperature, salinity and
dissolved oxygen fields in the Black Sea active layer are studied.
Inter-annual variation of cold intermediate layer characteristics is
analyzed. The computer atlas of hydrological-acoustic
characteristics of the Black Sea is compiled. The atlas of basic
hydrophysical fields of the southwest Atlantic is published.
Response of the spectra of the developing and completely
developed waving to the sharp decrease of the sea depth is
theoretically analyzed. The features of formation of dynamic
structure and spatial distribution of spectral-statistical waving
characteristics in the edge zones of the ice fields in the Azov Sea
and in the northwestern Black Sea are revealed. The hydrodynamic
model of surface waves propagation through horizontal
heterogeneities (cracks and breaks) of the ice fields is developed;
screening features of such heterogeneities are studied.
The hydrodynamic model of generation of wave disturbances in
freezing seas induced by a moving atmospheric vortex formation is
constructed. Dependence of the amplitude-phase structure of the
disturbed waves upon the ice state and the vortex dynamic
characteristics is investigated. Influence of the ice fields
rheology on the spatial distribution and dispersion features of wave
disturbances is studied. Nonlinear dynamics of surface waves in the
basins being covered by ice is examined. Peculiarities of the
amplitude-phase structure of the disturbances formed at the wave
propagation and their nonlinear interaction in ice conditions are
revealed.
The approximation model of the temperature field of the Black Sea
surface is constructed using the data of satellite measurements. On
its basis the intra-year and inter-annual water temperature
variability is investigated; the areas of anomalous features of its
distribution on the sea surface are shown. The atlas of the Black
Sea surface temperature based on the data of satellite measurements
was published.
Seasonal and inter-annual circulation and heat-stock variability
of waters of the North and Tropical Atlantic and its relation with
the Pacific variability of the El'-Nyn'o - South oscillation type is
studied. Characteristics of low-frequency variability of the
ocean-atmosphere system in the North and Tropical Atlantic and in
the Black Sea region are analyzed.
Based on the data of reanalysis (1979-1993) of the European
center of medium-term weather forecast ( ECMWF ), analyzed is the
inter-annual and intra-month variability of the air ground
temperature (AGT) in the European-Mediterranean region in connection
with the influence of the North Atlantic (NAO) and the Southern (SO)
oscillations.
Based on the materials of surveys, synoptic charts of the ground
atmospheric pressure and the observations at the marine
hydrometeorological stations of Ukraine, analyzed is the
inter-annual variability of the main pycnocline and its relation to
large-scale hydrometeorological processes in the Black Sea basin.
Long-term series of water temperature and salinity on isobaric and
isopycnal surfaces in the layer of the main pycnocline, atmospheric
pressure, ground wind rotor, air and sea surface temperature are
calculated. Relation between the value of the required anomalous
sea-atmosphere heat exchange providing penetration of convection to
the cold intermediate layer core, and the vertical heterogeneity of
the accessible potential energy field is estimated.
Based on the data of echo meter surveys, the features of the
bottom relief of the Crimean under-water edge are studied. Main
morphometric characteristics are defined.
The features of interaction of salt waters of the Sevastopol bay
and the river Chernaya waters at the geochemical barrier
representing a basic protective mechanism of the bay from external
influences, are investigated. It is revealed that the geochemical
barrier migrates in the river-bed within one and a half kilometers
depending on hydrometeorological situation and the water dynamics in
the bay (circulation and Seiche oscillations). Phosphates which are
of heightened coagulation ability, and the dissolved hydrogen which
is better dissolved in fresh water than in seawater, can be
indicators of the geochemical barrier position in the river-sea
system.
Results of the activity of sea ports of Ukraine as a part of sea
management are systematized. Ecological-geographical estimation of
their potential is given. Classification groups of features are
analyzed and generalized. Dynamics of real and carrying capacity of
ports is estimated. Functional economic relations of the coastal
area of Ukraine are revealed and the ecological aspects of activity
of port-industrial complexes are studied.
Publication
In 2000 - 2005 the employees of the department published more
than 230 scientific papers including the Atlas "Circulation,
temperature, salinity, ice conditions of the southwest Atlantic
ocean and the adjacent water areas of the Antarctic region" and the
"Atlas of the Black Sea surface temperature based on satellite data
of 1986-2002".
For further information please contact:
Oceanography Department
Marine Hydrophysical Institute,
2, Kapitanskaya St., Sevastopol, 99011, Ukraine
Phone: 380-692-540452
E-mail: okg@alpha.mhi.iuf.net
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