V. N. Belokopytov

Marine Hydrophysical Institute RAS · Oceanography

The Sea of Azov is a small, shallow, and freshened sea that receives a large freshwater discharge. Under certain external forcing conditions low-salinity waters from the Sea of Azov flow into the north-eastern part of the Black Sea through the narrow Kerch Strait and form a surface-advected buoyant plume. Water flow in the Kerch Strait also regular...

Цель: Исследована пространственно-временная изменчивость толщины верхнего квазиоднородного слоя (ВКС) в различных районах Черного моря и определена ее связь с динамикой вод и атмосферным воздействием за 1985-2017 гг. Методы и результаты: На основе архива гидрологических данных за 1985-2017 гг, включающего измерения судовых экспедиций, буев Argo и з...

Purpose. Spatio-temporal variability of the mixed layer depth (MLD) in different areas of the Black Sea in 1985–2017, its relationship with basin dynamics and atmospheric forcing are studied. Methods and Results. The study is based on the hydrological data archive for 1985–2017 including the measurements of the ship expeditions, the Argo buoys and...

The paper is devoted to the Black sea marine information systems. FSBSI «Marine Hydrophysical Institute of RAS» has gained a great experience in their development. A special feature of marine GISs is that in many cases the multi-disciplinary and multi-component character of scientific oceanology leads to creating narrower specialized software tools...

Introduction. Tracking of spread of various contaminations and elaboration of the operational systems to control wrecking discharges are among the important tasks of marine environment monitoring. The processes of transport of the contaminating impurity inflowing from different sewers were modeled based on the diagnostic calculations of water circu...

Mathematical method combining optimal interpolation and expansion into the empirical orthogonal functions is developed to implement a retrospective analysis of the Black Sea thermohaline structure using incomplete archival oceanographic data. In order to increase spatial consistency of the resulted hydrologic structure, the earlier applied reconstr...

Combination of altimetry-based method of eddy identification and historical hydrological measurements for 1992–2015 is used to analyze the thermohaline and dynamic structure of the Black Sea eddies and its relation with eddy intensity, eddy age and season of a year. Anticyclonic eddies (AEs) are characterized by negative salinity anomalies, which c...

KEY WORDS: PERSEUS, Statistic Arrays, Desktop Oceanographic Data Processing Module, Quality Check ABSTRACT: The Desktop oceanographic data processing module is intended for visual analysis of interdisciplinary cruise measurements. The program provides for data selection according to different criteria, automates making maps, sections, and vertical...

Certain results of investigating dangerous phenomena and potential natural disasters in the Azov–Black Sea basin are represented. The decrease of storm activity in the Black Sea observed in the end of the XX century is due to diminution of total amount and intensity of the passing cyclones. According to long-term tendencies of the North Atlantic Os...

Reliability of the forecasted fields in the Arctic Basin is limited by a number of problems resulting, in the first turn, from lack of operational information. Due to the ice cover, satellite data on the sea level and the sea surface temperature is either completely not available or partially accessible in summer. The amount of CTD measuring system...

The results of studies of the bioluminescence fields, hydrological and hydrochemical characteristics of the Black Sea have been represented. It has been shown, that in the open part of the Black Sea the zones of bioluminescence fields have a higher intensity and plankton concentrations in the 9 quasistationary zones of the anticyclonic gyres, situa...

The monograph is a generalization of up-to-date conceptions on physical oceanography of the Black Sea. The main focus is concentrated on thermohaline structure and sea dynamics. Physical processes and quantitative estimations are considered on mesoscale and seasonal scales. Results and conclusions are based on analysis of extensive observational da...

Decadal temperature and salinity fields at standard levels (0 – 500 m layer) in the Black Sea are constructed using in-situ data and satellite measurements obtained from the 50ies (XX centu-ry) up to now. The characteristics of their spatial and temporal variability are described. In the upper sea layer (0 – 50 m) the decadal temperature variabilit...

DEVELOPMENT AND CREATION OF THE NATIONAL COLLECTION OF MARITIME NAVIGATIONAL CHARTS AND OCEANOGRAPHIC ATLAS OF THE BLACK SEA AND THE SEA OF AZOV Abstract: The important for Ukraine scientific and technical problem — information for maritime safety, researching and use of natural resources in the Black Sea and the Sea of Azov is considered. A natio...

Presented are the estimates of precipitation amount and evaporation for the Black Sea basin based on the data of numerical regional reanalysis. The spatial distribution of considered variables is compared with the results obtained before using the method of extrapolation of measurements at the coastal meteorological stations. The computed water bal...

Выполнено исследование пространственно-временной изменчивости термохалинной структуры верхнего 300-метрового слоя Черного моря с использованием метода разложения по эмпирическим ортогональным функциям (ЭОФ) по данным буев-профилемеров Argo за период 2002 - 2012 гг. Показано, что около 80 % дисперсии температуры и около 90 % солености описываются тр...

On the basis of the data array of detailed echosounding surveys carried out from the research vessels of the Marine Hydrophysical Institute of the Ukrainian National Academy of Sciences and other institutions and the corresponding cartographic materials, we perform the numerical analyses of the morphometric characteristics of the bottom topography...

Regular observations in the Black Sea basin started in the past century, and quite good multidisciplinary observing system operated in the 70-80ies based on the ship observations. Modern oceanographic observing system in the basin is built according to the GOOS principles. It includes space remote sensing observations, data of free floating buoys a...

We pioneered a retrospective analysis of Black Sea hydrophysical fields for the period from 1971 to 1993. We describe a reanalysis algorithm based on the assimilation (in a σ-coordinate circulation model) of observed temperature and salinity data obtained on hydrophysical test areas. The thickness of the cold intermediate layer (CIL) and its freezi...

On the basis of the archival hydrological data, recently accumulated data of buoy profilometers, and the array of satellite data on sea-surface temperature, we estimate the interannual variability of the renewal of waters of the cold intermediate layer in the Black Sea for the last two decades. We propose a procedure of estimation of the intensity...

The long-term variability of Black Sea temperature and salinity in the layer 0-500 m in 1951–2008’ is examined. The averaged over 10-years periods temperature and salinity fields are calculated by the optimum interpolation method with using oceanographic (in situ) and remote sensing measurements in the Black Sea. For the 0-50 m layer calculations w...

Монография представляет собой обобщение современного состояния пред-ставлений о физической океанографии Черного моря. Основное внимание уделено термохалинной структуре и динамике вод бассейна. Рассматриваются физические процессы и количественные характеристики на масштабах сезонной, синоптиче-ской и мезомасштабной изменчивости. Выводы монографии ос...

Researches in the bioluminescence field vertical structure, amplitude characteristics and spatial distribution in the Black Sea have been conducted in IBSS, NAS of Ukraine, from up to the present time. Enough evidencies are available to testify dramatic changes in different Black sea ecosystem components including bioluminescence field parameters,...

Based on a hydrodynamic finite-element model, this work studies how the level surface and velocity field of wave currents in the Sea of Azov react to a change in storm conditions of November 14–16, 1992 due to cyclone passage.

Using new data for the concentrations and δ15N of the main nitrogen species of NO3−, NH4+, PON (particulate organic nitrogen) and N2 in the Black Sea, we studied the distributions of concentrations and δ15N using a coupled physical–biogeochemical model including known biogeochemical processes and nitrogen isotopic fractionation. In the deep anoxic...

Five software products created in the marine research institutes of Ukraine using environmental information of the Black Sea and Caspian basin are shortly presented. Two systems: GIS “Hydrometeorology of the Black and Azov Seas” and the Caspian Biodiversity Information System mean for the common functions of treatment of environmental information....

The results of studies of the bioluminescence fields, hydrological and hydrochemical characteristics of the Black Sea have been represented. It has been shown, that in the open part of the Black Sea the zones of bioluminescence fields have a higher intensity and plankton concentrations in the 9 quasistationary zones of the anticyclonic gyres, situa...

We compare the thermohaline and dynamic characteristics of the Black Sea reconstructed by using two versions of climatic temperature and salinity fields:old (1903–1982)and new (1903–2003). The fields are reconstructed with the help of continuous assimilation of the climatic temperature and salinity in the model. It is shown that the climatic thermo...

Оценивается междесятилетняя изменчивость средних по морю значений температуры и солености на стандартных горизонтах по данным для зимнего (февраль – март), летнего (июль – август) и осеннего периодов (октябрь – ноябрь) в слое моря 0 – 300 м, а также по среднегодовым данным в слое 50 – 300 м. Выявлена статистически значимая междесятилетняя изменчиво...

In the framework of the project "Rescue of Black Sea Hydrological Data" collected from more than 100,000 Black Sea oceanographic stations from all sources and created a CD-ROM digital atlas "Physical Oceanography of the Black Sea" based on all available, historical hydrological data. For the proving data access and visualization the database manage...

The Black Sea is a well-investigated marine basin. Since 1980 more than 100,000 oceanographic stations have been established in it. However, their distribution in time and location is not uniform and the number of observations significantly decreases with depth. Comparisons of climate products obtained from temperature and salinity data at differen...

TOPEX/Poseidon (T/P) altimeter data for the period 1993–1997 and their correlation with available precipitation, evaporation and river runoff data are analysed with the aim to study the variability of sea level and water balance in the Black Sea. The difference between the time rate of change of basin volume estimated from altimeter and fresh water...

The paper is a description of temporal variability of winter cooling conditions and estimation of effective cross-isopycnal mixing rates in the Black Sea. Data averaging versus salinity I sigma-t scale was used to filter effects of local dynamics. It is shown that traces of winter mixing events appear well preserved in the temperature-salinity stru...

The drastic changes in the Black Sea ecosystem, i.e. the harsh decline of the Black Sea fishery in 1989 and the dramatic changes in the zooplankton were often related to the outburst of the accidentally introduced ctenophore Mnemiopsis leidyi and to other man made events, such as pollution, eutrophication, regulation of river outflows (irrigation,...

The peculiarities of seasonal variability of the calculated sound speed and elements of its vertical stratification in the northern Black Sea continental slope are considered. Typical acoustic structures have been identified. The impact of seasonal variability of the sound speed upon the ray characteristics of acoustic fields is studied.

The flows through the Turkish Straits System (comprised of the Straits of Bosphorus and Dardanelles, and the Sea of Marmara) are subject to a great degree of transient variability, depending on the atmospheric factors and the water budget. As a result of the rapid along-strait variations in the strait geometry, the sharp stratification, and the tem...

Usingin situ temperature and salinity observations from the Marine Hydrophysical Institute's oceanographic data set, regularities of the formation of structure and seasonal variability of the calculated sound speed field, as well as elements of the latter's vertical stratification in the South Crimea shelf area, have been studied. The ray approxima...

Regional hydrological data sets of the Marine Hydrophysical Institute for 1950 – 1992 were used for the analysis of interannual and inter-decadal variability of temperature, salinity and density of seawater in the Northwest Black Sea. It was shown that high amplitude fluctuations of all fields occurred during the analysed period. These fluctuations...

The vertical structure of the climatic and seasonal fields of the estimated speed of sound in the north-east Atlantic Ocean is considered. Zonation according to typicalc(z) profiles allowing for seasonal variations was carried out. It is shown that the water areas with a dual-channel vertical hydroacoustic structure vary essentially throughout the...

Разработан новый программный пакет «Гидроэколог» для обработки экспедиционных данных в области океанологии, гидробиологии и биофизики моря. Основное назначение программы – автоматизация построения карт, разрезов и вертикальных профилей по основным расчётным величинам и неограниченному количеству измеряемых параметров для любого района Мирового океа...