Numerical modeling of hydrophysical fields of the Black Sea under the conditions of alternation of atmospheric circulation processes

Kordzadze, A. A.; Demetrashvili, Demuri; Surmava, Aleksandre A.

doi:10.1134/s0001433808020096

Cited by 8 publications

(3 citation statements)

References 5 publications

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“…There is a hypothesis of the direct impact of the wind associated with negative wind vorticity over the southeastern region, but there are also other hypotheses [23]. Numerical study carried out in [27] using the basin-scale model of Black Sea dynamics [16,17] with different climate data shows that thermohaline conditions are a very important factor in the generation of the Batumi eddy.…”

Section: Resultsmentioning

confidence: 99%

“…A high-resolution RM-IG is developed on the basis of the basin-scale model of the Black Sea dynamics [16,17], adapted to the southeastern part of the Black Sea, and is based on a full system of ocean hydrothermodynamics equations written in Cartesian coordinate system for deviations of temperature, salinity, pressure and density from corresponding standard vertical distributions. The RM-IG takes into account: 1.…”

Section: Description Of the Rm-igmentioning

confidence: 99%

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Numerical Study of Variability of Hydrological Regime for the Southeastern Part of the Black Sea (2010-2021)

Demetrashvili,

Kukhalashvili,

Kvaratskhelia

2023

GGS

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The study and forecast of mesoscale dynamic processes in the coastal/shelf zones of seas and oceans is one of the main issues of physical oceanography, because these zones experience the most significant anthropogenic load. Circulation processes, which are closely related to temperature and salinity fields, make a significant contribution to the distribution of various impurities of anthropogenic and natural origin in the marine environment. In the present paper, a high-resolution numerical regional model of the Black Sea dynamics of M. Nodia Institute of Geophysics of Ivane Javakhishvili Tbilisi State University (RM-IG) is used to simulate and study some peculiarities of regional hydrophysical processes occurring in 2010-2021 in the southeastern part of the Black Sea covering Georgian sector of the Black Sea and surrounding water area. The RM-IG is based on a primitive system of ocean hydro and thermodynamics equations in hydrostatic approximation written in the Cartesian coordinate system and is implemented with a spatial resolution of 1 km under real atmospheric forcing.

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Section: Resultsmentioning

confidence: 99%

Section: Description Of the Rm-igmentioning

confidence: 99%

Numerical Study of Variability of Hydrological Regime for the Southeastern Part of the Black Sea (2010-2021)

Demetrashvili,

Kukhalashvili,

Kvaratskhelia

2023

GGS

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“…The development of numerical models, increasing their adequacy and accuracy, is also associated with an increase in spatial resolution. Reproduction and analysis of marine processes stimulate the construction of effective methods for calculating the dynamics of coastal currents in a wide range of spatio-temporal variability [2,3,[7][8][9][10][11][12][13][14][15][16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Numerical Modeling of Marine Circulation, Pollution Assessment and Optimal Ship Routes

Zalesny

Agoshkov

Aps

et al. 2017

JMSE

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Methods and technology have been developed to solve a wide range of problems in the dynamics of sea currents and to assess their "impact" on objects in the marine environment. Technology can be used for monitoring and forecasting sea currents, for solving the problems of minimizing risks and analyzing marine disasters associated with the choice of the optimal course of the ship, and assessing the pollution of coastal zones, etc. The technology includes a numerical model of marine circulation with improved resolution of coastal zones, a method for solving the inverse problem of contamination of the sea with a passive impurity, and a variational algorithm for constructing the optimal trajectory of the vessel. The methods and technology are illustrated by solving problems of Baltic Sea dynamics. The model of sea dynamics is governed by primitive equations that are solved on a grid with an improved resolution of the selected coastal zone-in this case, the Gulf of Finland. The equations of the model are formulated in a bipolar orthogonal coordinate system with an arbitrary arrangement of poles and the sigma coordinate in the vertical direction. An increase in the horizontal resolution of the allocated zone is achieved due to the displacement of the north pole in the vicinity of the city of St. Petersburg. A class of dangerous technogenic situations and natural phenomena (sea accidents, which can be investigated with the help of the proposed methodology), includes tanker accidents in the case of a possible collision with a stationary object (with "dynamic danger") or a moving object (including another ship), accidents on oil-producing platforms and oil pipelines, and coastal pollution.

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Short-range forecast of hydrophysical fields in the eastern part of the Black Sea

Kordzadze¹,

Demetrashvili²

2013

Izv. Atmos. Ocean. Phys.

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Numerical modeling of hydrophysical fields of the Black Sea under the conditions of alternation of atmospheric circulation processes

Cited by 8 publications

References 5 publications

Numerical Study of Variability of Hydrological Regime for the Southeastern Part of the Black Sea (2010-2021)

Numerical Study of Variability of Hydrological Regime for the Southeastern Part of the Black Sea (2010-2021)

Numerical Modeling of Marine Circulation, Pollution Assessment and Optimal Ship Routes

Short-range forecast of hydrophysical fields in the eastern part of the Black Sea

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