scholarly journals Increase of Temperature and Salinity in the Active Layer of the North-Eastern Black Sea from 2010 to 2020

2021 ◽  
Vol 28 (3) ◽  
Author(s):  
O. I. Podymov ◽  
A. G. Zatsepin ◽  
V. V. Ocherednik ◽  
◽  
◽  
...  
Keyword(s):  
Black Sea ◽  
Cross Sections ◽  
Lower Boundary ◽  
The Black Sea ◽  
Temperature Minimum ◽  
Layer Potential ◽  
Northeastern Part ◽  
The North ◽  
Shelf Slope ◽  
Salinity Increase

Purpose. The paper is aimed at assessing salinity and temperature variability in the upper 300-meter layer of the northeastern part of the Black Sea based on the analysis of the archival and modern expeditionary data. Methods and Results. The data on the cross-sections “coast – sea center” (with the length of 70–110 nautical miles) performed from 1999 to 2009, as well as the results of regular ship monitoring in the shelf-slope zone of the northeastern part of the Black Sea carried out in 2010–2020 were used. It was found that salinity was progressively increasing in the upper 200-meter layer during the last decade. Salinity increase, on the average, constituted annually about 0.05–0.06 PSU. An increase of temperature was also observed below the layer of temperature minimum (core of the cold intermediate layer). In particular, the lower 8.7 °C isotherm rose annually, on the average, by 11 m from its annual average depth 242 m in 2010 up to 121 m in 2020. Salinity growth led to the corresponding changes in water density that resulted in elevation of the lower boundary of the oxygen-containing layer (potential density is 15.8) from the depth of 143 m in 2010 to 124 m in 2020. Conclusions. Climatic changes have led to a noticeable salinity increase in the upper 200-meter layer of the northeastern Black Sea, as well as to a temperature increase in the layers situated below the temperature minimum layer. Though the measurements were carried out in a certain area of the shelf-slope zone, there are reasons to assume that the observed dynamics can be attributed to the entire Black Sea. Physical reasons for the observed changes require a detailed research.

Increase of Temperature and Salinity in the Active Layer of the North-Eastern Black Sea from 2010 to 2020

2021 ◽  
Vol 37 (3) ◽  
Author(s):  
O. I. Podymov ◽  
A. G. Zatsepin ◽  
V. V. Ocherednik ◽  
◽  
◽  
...  
Keyword(s):  
Black Sea ◽  
Cross Sections ◽  
Lower Boundary ◽  
The Black Sea ◽  
Temperature Minimum ◽  
Layer Potential ◽  
Northeastern Part ◽  
The North ◽  
Shelf Slope ◽  
Salinity Increase

Purpose. The paper is aimed at assessing salinity and temperature variability in the upper 300-meter layer of the northeastern part of the Black Sea based on the analysis of the archival and modern expeditionary data. Methods and Results. The data on the cross-sections “coast – sea center” (with the length of 70–110 nautical miles) performed from 1999 to 2009, as well as the results of regular ship monitoring in the shelf-slope zone of the northeastern part of the Black Sea carried out in 2010–2020 were used. It was found that salinity was progressively increasing in the upper 200-meter layer during the last decade. Salinity increase, on the average, constituted annually about 0.05–0.06 PSU. An increase of temperature was also observed below the layer of temperature minimum (core of the cold intermediate layer). In particular, the lower 8.7 °C isotherm rose annually, on the average, by 11 m from its annual average depth 242 m in 2010 up to 121 m in 2020. Salinity growth led to the corresponding changes in water density that resulted in elevation of the lower boundary of oxygen-containing layer (potential density 15.8) from the depth 143 m in 2010 to 124 m in 2020. Conclusions. Climatic changes have led to a noticeable salinity increase in the upper 200-meter layer of the northeastern Black Sea, as well as to a temperature increase in the layers situated below the temperature minimum layer. Though the measurements were carried out in a certain area of the shelfslope zone, there are the reasons to assume that the observed dynamics can be attributed to the entire Black Sea. Physical reasons for the observed changes require a detailed research

scholarly journals FORMATION OF THE COLD INTERMEDIATE LAYER IN THE SHELF-SLOPE NORTHEASTERN PART ZONE OF THE BLACK SEA

2019 ◽  
Vol 47 (3) ◽  
pp. 58-71 ◽  
Author(s):  
S. B. Kuklev ◽  
A. G. Zatsepin ◽  
O. I. Podymov
Keyword(s):  
Black Sea ◽  
Intermediate Layer ◽  
Correlation Coefficients ◽  
Water Area ◽  
Statistical Hypothesis ◽  
Time Shift ◽  
The Black Sea ◽  
Cold Intermediate Layer ◽  
Northeastern Part ◽  
Shelf Slope

The paper presents an overview of the existing hypotheses about the formation areas and the distribution mechanisms of the cold intermediate layer (CIL) in the Black Sea. The testing of the statistical hypothesis about the relationship of the CIL parameters in the shelf-slope zone of the Black Sea Northeastern part with the temperature of the atmosphere surface layer in the central part of the eastern cyclonic gyre is performed. The obtained high values of the correlation coefficients (~0.98) confirmed the dependence of the CIL parameters during its formation period from the air temperature over the Northeastern part of the Black Sea. One of the concepts of the “convective-advective” hypothesis by Ovchinnikov and Popov (1987) about approximately 2 months time shift between the processes of cold air masses invasion into the water area of the Black Sea and the developed CIL waters appearance in the coastal zone of the Gelendzhik area is also confirmed.

scholarly journals Determination of Fox grape genotypes (Vitis labrusca L.) grown in Northeastern Anatolia

2008 ◽  
Vol 35 (No. 4) ◽  
pp. 162-170 ◽  
Author(s):  
H. Celik ◽  
B. Kose ◽  
R. Cangi
Keyword(s):  
Black Sea ◽  
The Black Sea ◽  
Young Shoot ◽  
Vitis Labrusca ◽  
Black Sea Region ◽  
Northeastern Part ◽  
Gene Center ◽  
The Past ◽  
The North

Northeastern part of Anatolia is a gene center of grapevine and a wide diversity of Fox grapes grow here. Viticulture and some grapevines in the Black Sea Region (in the north of Turkey) are on the verge of extinction; several types and varieties grown in this region have never been described and did not survive till present. For the past 10 years vineyards and grapevines in the Black Sea Region have been studied. In the present study, eighteen grapevines of foxy taste grown in the Artvin and Rize provinces were described. An ampelographic description of young shoot, mature shoot, young leaf, mature leaf, berry, bunch and seed were carried out using the OIV (Office International de la Vigne et du Vin) list for grapevine cultivars and <I>Vitis</I> species. However, several other parameters of the cultivars were measured for evaluation.

Modeling of ecological conditions in the Euxine Basin in the Sarmatian and Maeotian by methods of diatom analysis

2019 ◽  
pp. 257-261
Author(s):  
Eleonora P. Radionova
Keyword(s):  
Black Sea ◽  
Late Miocene ◽  
The Black Sea ◽  
Subtidal Zone ◽  
Diatom Analysis ◽  
Diatom Flora ◽  
North West ◽  
Ecological Conditions ◽  
The North

The associations and ecological conditions of the existence of modern diatoms of the North-West (Pridneprovsky), Prikerchensky and Eastern regions of the subtidal zone of the Black Sea are considered. Based on the unity of the composition of the Present and Sarmatian-Meotian diatom flora, an attempt has been made to model some of the ecological c situation of the Late Miocene Euxinian basin.

Oscillations of the Black Sea sea level in the north part of the coast

1999 ◽  
Vol 10 (2) ◽  
pp. 123-130
Author(s):  
Yu. I. Goryachkin ◽  
V. A. Ivanov ◽  
Yu. A. Stepanyants
Keyword(s):  
Sea Level ◽  
Black Sea ◽  
The Black Sea ◽  
The North ◽  
North Part

Influence of Currents and Atmospheric Circulation on the Efficiency of European Anchovy Fishing during its Wintering off the Black Sea Coast of the Krasnodar Territory

2021 ◽  
Author(s):  
B. N. Panov ◽  
E. O. Spiridonova ◽  
◽  
Keyword(s):  
Black Sea ◽  
Atmospheric Transport ◽  
Mesoscale Eddy ◽  
The Black Sea ◽  
Short Term ◽  
European Anchovy ◽  
The North ◽  
Daily Data ◽  
Black Sea Coast ◽  
Sea Coast

Russian fishermen harvest European anchovy primarily off the Black Sea coast of the Krasnodar Territory during its wintering and wintering migrations. At wintering grounds, temperature conditions become a secondary factor in determining the behaviour of commercial concentration of European anchovy, with wind and currents being the primary factors. Therefore, the aim of this work is to determine the potential use of daily data on water circulation and local atmospheric transport in short-term (1–7 days) forecasting of European anchovy fishing in the Black Sea. The research used the European anchovy fishery monitoring materials for January – March 2019, as well as daily maps of the Black and Azov Seas level anomalies (from satellite altimetry data) and surface atmospheric pressure and temperature in Europe (analysis) for the mentioned period. The dynamics of the catch rate and its relation to altimetry and atmospheric transport indicators in the north-eastern part of the Black Sea were investigated using graphical and correlation methods. This analysis showed that the main factor contributing to increased catches is intensification of northwest currents in the coastal 60-km zone. The effect of atmospheric transport on fishing efficiency depends on the mesoscale eddy structure of the nearshore current field. In the presence of an intense northwest current in the fishing area, southwest atmospheric transports have a positive effect on fishing, while in the presence of an anticyclonic meander of currents, northeast atmospheric transports become effective. The presence of maximum significant relationships when the determinants of fishing performance are shifted by 1–7 days allows making short-term predictions of fishing efficiency.

scholarly journals Long term trends in the sea surface temperature of the Black Sea

Ocean Science ◽  
2010 ◽  
Vol 6 (2) ◽  
pp. 491-501 ◽  
Author(s):  
G. I. Shapiro ◽  
D. L. Aleynik ◽  
L. D. Mee
Keyword(s):  
Surface Temperature ◽  
Sea Surface Temperature ◽  
Black Sea ◽  
Sea Surface ◽  
The Black Sea ◽  
The North ◽  
Sst Variability ◽  
Long Term Trends ◽  
Cooling Trend

Abstract. There is growing understanding that recent deterioration of the Black Sea ecosystem was partly due to changes in the marine physical environment. This study uses high resolution 0.25° climatology to analyze sea surface temperature variability over the 20th century in two contrasting regions of the sea. Results show that the deep Black Sea was cooling during the first three quarters of the century and was warming in the last 15–20 years; on aggregate there was a statistically significant cooling trend. The SST variability over the Western shelf was more volatile and it does not show statistically significant trends. The cooling of the deep Black Sea is at variance with the general trend in the North Atlantic and may be related to the decrease of westerly winds over the Black Sea, and a greater influence of the Siberian anticyclone. The timing of the changeover from cooling to warming coincides with the regime shift in the Black Sea ecosystem.

The northern Black Sea and North Caucasus

2018 ◽  
Author(s):  
Valenina Mordvinceva ◽  
Sabine Reinhold
Keyword(s):  
Black Sea ◽  
Iron Age ◽  
Seventh Century ◽  
The Black Sea ◽  
North Caucasus ◽  
The North ◽  
Long Time ◽  
History Of ◽  
Northern Shore ◽  
Greek Colonization

This chapter surveys the Iron Age in the region extending from the western Black Sea to the North Caucasus. As in many parts of Europe, this was the first period in which written sources named peoples, places, and historical events. The Black Sea saw Greek colonization from the seventh century BC and its northern shore later became the homeland of the important Bosporan kingdom. For a long time, researchers sought to identify tribes named by authors such as Herodotus by archaeological means, but this ethno-deterministic perspective has come under critique. Publication of important new data from across the region now permits us to draw a more coherent picture of successive cultures and of interactions between different parts of this vast area, shedding new light both on local histories and on the role ‘The East’ played in the history of Iron Age Europe.

Sign in / Sign up

Export Citation Format

Share Document