Simulation of Hydrophysical Processes in Coastal Regions of the Sea

In the present work, we generalize the results of our investigations in the field of simulation of hydrophysical and ecological processes in coastal regions of various seas and some closed basins. The developed and applied mathematical models and the results of numerical experiments are briefly analyzed.     

Modeling of oil spreading in a problem of radar multiangle diagnostics of Sea surface pollutions

The possibilities of a multiangle method of radar diagnostics to determine thickness of an oil film on a sea surface by comparing the radar data with the quantitative modeling results obtained using the model of oil spreading dynamics are analyzed. The experimental results of the remote sensing of the Caspian Sea water area near the Neftyanye Kamni oil field by the Envisat-1 synthetic aperture radar (SAR) and the new Floating Objects Tracking System (FOTS) model of oil spreading are used for the analysis. The model allows to calculate the dynamics and change in the mass and size of an oil slick basing only on the available data of satellite measurements and atmospheric reanalysis.The model takes into account the main processes that influence the slick formation (gravity spreading, advective transport, dispersion, emulsification, turbulent mixing, and evaporation). This model is used to calculate the thickness evolution and dynamics of the displacement of oil slicks in the period between two consecutive radar images of this region (0.5–4 days) and to estimate the volumes of oil spilled in the field. The good consistence of the height of the oil film calculated using radar measurements and the modeling results confirms the method’s reliability.     

Impact of Winter Cooling on the Interannual Variability in the Vertical Oxygen Distribution in the Black Sea: Evidence from Bio-Argo Floats

Oceanology - An effect of winter cooling on the interannual variability in the vertical oxygen distribution depending on temperature was studied and qualitative and quantitative estimate of mutual...     

The Black Sea level trends from tide gages and satellite altimetry

Obtained are the estimates of the Black Sea level trends for the period of 1992–2005 as derived from the tide-gage and satellite altimetry data. An estimated rate of the mean sea level rate calculated from the averaged altimetry data is 7.6 ± 0.3 mm/year that is by 2–3 times higher than the estimates for the previous periods. Such high values of the trend are evidently associated with the sea level variability features at the 10-year temporal scale. The Black Sea level trend is characterized by the high spatial variability: it amounts to 8–9.5 mm/year in the coastal areas of the Black Sea basin that exceeds the trend in the deep-water part by 1.5–2 times (4.5–6 mm/year). Such distribution is an effect of the cyclonic Rim Current intensification. Based on the difference in the sea level trends obtained from in-situ and altimetry measurements, the velocity of the vertical crustal motion is estimated for the Ukrainian coastal stations of the Black Sea.     

Seasonal and Diurnal Variability of the Thermal Skin Layer Characteristics Based on a Comparison of Satellite Measurements by SEVIRI and Data from Temperature-Profiling Drifters

Izvestiya, Atmospheric and Oceanic Physics - A comparative analysis of high time resolution data acquired by the SEVIRI scanner and temperature-profiling drifters during a multiyear period is...     

Impact of Submesoscale Eddies on the Transport of Suspended Matter in the Coastal Zone of Crimea Based on Drone,Satellite, and In Situ Measurement Data

Oceanology - High-resolution measurements by unmanned aerial vehicles (UAVs), satellite and in-situ data are used to study the optical structure of coastal submesoscale eddies and their influence...     

Effect of the East Siberian Current on Water Exchange in the Bering Strait Based on Satellite Altimetry Measurements

Oceanology - The seasonal and interannual variability of water exchange in the Bering Strait and its relationship with Arctic circulation is investigated on the basis of satellite-altimetry...     

Hydrological structure of waters of the persian gulf according to the data of observations in 1992

We describe the hydrological structure of waters of the Persian Gulf and its seasonal variability according to the data of CTD surveys carried out in February–June 1992 in the course of the cruises of the NOAA R/VMt. Mitchell aimed at the analysis of the consequences of the ecological catastrophe caused by the spread of oil spots formed as a result of war operations in the Persian Gulf in 1991. Translated by Peter V. Malyshev and Dmitry V. Malyshev     

Modeling of Circulation and Propagation of Contaminating Impurities in the Balaklava Bay

The Princeton Ocean Model is adapted to the water area of the Balaklava Bay for the numerical analysis of circulation. The calculations are performed with the help of the diagnostic method by using the data of the hydrological survey carried out in the bay in August 1992. We study the structure of the surface and bottom currents in the analyzed period as well as the vertical circulation of waters and the circulation averaged over the depth. The obtained three-dimensional fields of currents are used for the numerical analysis of the process of propagation of passive contaminating impurities from the sources located on the coasts of the Balaklava Bay. __________ Translated from Morskoi Gidrofizicheskii Zhurnal, No. 3, pp. 49–61, May–June, 2005.     

Estimating Agulhas Leakage by Means of Satellite Altimetry and Argo Data

Izvestiya, Atmospheric and Oceanic Physics - The study of mesoscale eddies provides an understanding of entire systems of interconnected oceanic characteristics. Mesoscale eddies have their own...