Coastal upwelling in the Gelendzhik area of the Black Sea: Effect of wind and dynamics

Silvestrova, Ksenia; Зацепин, А. Г.; Myslenkov, Stanislav

doi:10.1134/s0001437017040178

Cited by 15 publications

(4 citation statements)

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“…The criterion was previously described in [28] and showed good applicability as an additional method of the hydrophysical analysis in the Black Sea. For the upwelling criterion calculation, we take wind data from NCEP CFSR reanalysis [60] in the nearest grid point with a time step of 3 h. Other parameters (mixed layer depth, salinity, density) were taken as climatological means.…”

Section: Methodsmentioning

confidence: 99%

“…However, most studies are based on satellite data [24][25][26][27], which have low temporal resolution, and only the top layer is visible. In situ measurements of upwelling in the Black Sea were reported [28,29]. In the Black Sea, the coastal current could be driven by mesoscale or submesoscale anticyclonic eddies, which are not directly related to wind forcing [18,19].…”

Section: Introductionmentioning

confidence: 99%

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Water Structure in the Utrish Nature Reserve (Black Sea) during 2020–2021 According to Thermistor Chain Data

Silvestrova

Myslenkov

Puzina

et al. 2023

JMSE

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This paper reports the water temperature structure and associated coastal processes in the NE part of the Black Sea. In situ temperature was measured in the water area of the Utrish Nature Reserve. The thermistor chain was moored in 2020 and included 6–10 temperature sensors with an accuracy of ±0.025 °C and time step of one minute. The seasonal variations in the water temperature, upwelling events, internal waves and diurnal cycle were analyzed. The maximum value of SST (28.6 °C) was registered in the subsurface layer in August 2021; the minimum (7.7 °C) was registered in March 2022. Estimates of the diurnal temperature cycle were obtained according to spectral analysis. Summer months show the diurnal cycle more than 60% of the time, and the cold period shows it less than 10% of the time. Internal waves appeared in thermocline with periods from 5 min to 20 h. The strongest Ekman upwelling was registered in September 2021. The water temperature dropped from 26 °C to 16 °C in 10 h. Additionally, quality assessments of two hydrodynamic models were made. The models showed a good correlation (0.9) with water temperature measurements, but RMSE could reach 1–1.8 °C for subsurface layers. Temperature variability and its characteristics are an important basis for future coastal ecosystem studies in the Utrish.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Water Structure in the Utrish Nature Reserve (Black Sea) during 2020–2021 According to Thermistor Chain Data

Silvestrova

Myslenkov

Puzina

et al. 2023

JMSE

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“…Seasonal upwelling systems observed in the Pacific Ocean East Asian marginal seas have become increasingly important because the potential changes in the upwelling may have a dramatic ecosystem, socioeconomic, and even climate impacts [10]. However, less attention has been paid to the short-term upwelling events that are also relatively frequently observed in the enclosed or semi-enclosed seas such as the Mediterranean Sea [11,12], Black Sea [13,14] or the Baltic Sea [15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Short-Term Upwelling Events on Fish Assemblages at the South-Eastern Coast of the Baltic Sea

Dabuleviciene

Jucevicius

Zolubas

et al. 2023

Water

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Multiple stressors, such as overfishing, pollution, climate change, biological invasions etc., are affecting fish communities, and thus can have versatile effects on marine ecosystems and socio-economic activities as well. Understanding the changes in the fish community structure is ecologically and economically important, yet a very complex issue, requiring comprehensive analysis of multiple factors. The role of regional oceanographic variability, namely, coastal upwelling, is often neglected when it comes to the analysis of fish assemblages. In this perspective, we were aiming, for the first time in the Baltic Sea, to assess the upwelling influence on fish communities and fish community-based ecological indices used under Marine Strategy Framework Directive. The study covered a long-term period (2000–2019) for upwelling identified by satellite data analysis and fish gillnet surveys, performed in three distinct locations in the coastal waters of the SE Baltic Sea. Overall, our study revealed that temporal dynamics of fish abundance and community composition were associated with the presence of coastal upwelling. The study outcomes suggest that the fish community was more diverse and a higher number of some fish species was observed before upwelling. During upwelling, there was more evident dominance of 1–2 main marine fish species. Through the changes in fish abundance and species composition upwelling was also responsible for the changes in fish community structure-based indices for marine environment status, i.e., in the majority of the cases a decrease in Trophic, Piscivorous Fish, and Diversity indices were observed. Our study demonstrates that upwelling can affect both, the quantitative and qualitative characteristics of coastal fish communities, therefore, it is important to consider this when predicting shifts in the distribution of fish stocks or assessing environmental status indicators, especially under changing climate. We believe that our approach adds novel information to the study of coastal ecosystems of the Baltic Sea and is important for better management of socio-economic activities in the coastal zone.

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“…Более детально закономерности и механизмы формирования кли-матической сезонной и многолетней изменчивости крупномасштабной термохалинной структуры вод Черного моря исследованы и выявлены в рабо-те [15]. Влияние различных процессов на гидро-физическую структуру вод Черного моря и на ее короткопериодные колебания рассмотрено в ста-тьях [16][17][18][19][20], а в прибрежной зоне северо-восточ-ной части Черного моря -в работах [20][21][22].…”

Section: Introductionunclassified

Peculiarities in the Formation of the Vertical Structure of Waters on the Black Sea North-Eastern Shelf in Spring and Summer 2007

Inzhebeikin¹

2018

Sc. South Russ.

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Аннотация. Представлены особенности вертикальной T-S-структуры вод северо-восточного шель-фа Черного моря по данным гидрологической съемки посредством вертикального STD-зондирования в различные сезоны. При относительно одинаковых значениях потока тепла, проходящего через по-верхность моря, в северо-восточной части Черного моря весной можно выделить три основных типа вертикального распределения солености. Первый тип характеризуется сильно развитым верхним од-нородным слоем солености, достигающим горизонтов сезонного пикноклина (25-30 м); образуется в зоне интенсивного вертикального перемешивания (на относительно мелководных акваториях) вдали от распресняющего влияния стока рек или азовоморских вод. Второй тип характеризуется наличием верхнего тонкого (до 1 м) слоя с распресненными (5-15 ‰) водами, который по мере удаления от устьев рек может преобразовываться от сплошного слоя до отдельных разрозненных линз; образуется в райо-нах влияния стока рек при натекании пресных вод на воды с первым типом распределения солености. Третий тип характеризуется наличием верхнего перемешанного слоя незначительной толщины (2-3 м) с соленостью около 17,32 ‰, который только формируется. Летом профили вертикального распределе-ния солености и температуры в северо-восточной части Черного моря менее разнообразны по сравне-нию с весенним периодом: в поверхностном слое четко выделяется верхний перемешанный слой, соле-ность вод в котором находится в пределах от 16,83-16,90 в прикерченском районе до 17,85-17,90 ‰ на акватории от Туапсе до Сочи (лишь в районе Адлера, где после частых дождевых паводков проявляется распресняющее воздействие стока рек грузинского и абхазского секторов шельфа, вертикальный про-филь солености в поверхностном слое имеет многоступенчатый характер со значениями 17,7-18,1 ‰).Ключевые слова: Черное море, северо-восточный шельф, сезонные термодинамические процессы, вертикальная T-S-структура вод. PECULIARITIES IN THE FORMATION OF THE VERTICAL STRUCTURE OF WATERS ON THE BLACK SEA NORTH-EASTERN SHELF IN SPRING AND SUMMER 2007Yu.I. Inzhebeikin 1 Abstract. Features of vertical T-S-structure of North-Eastern shelf waters of the Black Sea are demonstrated according to hydrological survey on the research vessel "Deneb". The shooting was done in different seasons through vertical STD sensing using a specific network of stations. However the heat fluxes through the sea surface are relatively similar, in the spring there are three main types of vertical distribution of salinity and temperature on the north-eastern part of the Black Sea. The parameters of these different types of vertical distribution are given. The analysis of the formation mechanisms of such types of vertical distribution is performed. The first type is mainly characterized by a highly developed upper homogeneous layer of salinity, reaching the horizons of the seasonal pycnocline (25-30 m). It is formed in the zone of intense vertical mixing (in areas of relatively shallow water) away from the freshening influence of rivers flow or waters of the Sea of Azov. T...

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Coastal upwelling in the Gelendzhik area of the Black Sea: Effect of wind and dynamics

Cited by 15 publications

References 3 publications

Water Structure in the Utrish Nature Reserve (Black Sea) during 2020–2021 According to Thermistor Chain Data

Water Structure in the Utrish Nature Reserve (Black Sea) during 2020–2021 According to Thermistor Chain Data

The Effect of Short-Term Upwelling Events on Fish Assemblages at the South-Eastern Coast of the Baltic Sea

Peculiarities in the Formation of the Vertical Structure of Waters on the Black Sea North-Eastern Shelf in Spring and Summer 2007

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