Assessment of Pollution of the Kerch Strait and Adjacent Black Sea Area Based on Field Measurements of 2019–2020

Zavialov, Peter; Zavialov, Ivan; Izhitskiy, Alexander; Izhitskaya, Elena; Коновалов, Б. В.; Krementskiy, V. V.; Nemirovskaya, I. A.; Часовников, В. К.

doi:10.1134/s0001437022020175

Cited by 2 publications

(1 citation statement)

References 7 publications

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“…The latter could be connected to the seasonal dynamics of the biological communities of the northeastern Black Sea [29]. Moreover, the temporal dynamics of dissolved methane concentrations in the coastal zones of the northeastern Black Sea is significantly affected by rapid and short-term increases in continental runoff occurring during flood conditions [30], while the continental runoff is among the sources of suspended matter, anthropogenic pollution and dissolved methane in the region [31,32].…”

Section: Introductionmentioning

confidence: 99%

Seasonal Variability of Dissolved Methane in the Shallow Coastal Zone: The Case Study of the Golubaya Bay, Northeastern Part of the Black Sea

Izhitskaya,

Egorov,

Zavialov

2023

JMSE

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The variability of the dissolved methane content in coastal zones is an important component of the biogeochemical cycle in the marine ecosystem. The objective of this study is to investigate the seasonal variability of dissolved methane distribution in the aerobic shallow coastal zone through the example of the small bay in the northeastern Black Sea. This study is based on the direct observations carried out during a long-term monitoring program conducted in the bay from 1999 to 2016. The seasonal and inter-annual variability of the dissolved methane pattern is considered under the climatic conditions as well as under the influence of extreme flood. The seasonal range of the dissolved methane content variability in the shallow part of the northeastern Black Sea is 1–2 orders of magnitude higher compared with the areas remote from the coast. The dissolved methane content in Golubaya Bay in summer is an order of magnitude higher than the winter values. In particular, local methane maxima located near the river and stream mouths and in the central bottom part of the bay have a well-shown seasonal cycle. The extreme flood conditions observed in July 2012 resulted in high methane concentrations 2 months after the flood event, when the surface concentrations of the dissolved CH4 exceeded the equilibrium with the atmospheric values by a factor of 400. The obtained results provide a unique opportunity to estimate the scale of the biogeochemical processes in marine coastal environments under the influence of climatic and extreme conditions.

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Section: Introductionmentioning

confidence: 99%

Seasonal Variability of Dissolved Methane in the Shallow Coastal Zone: The Case Study of the Golubaya Bay, Northeastern Part of the Black Sea

Izhitskaya,

Egorov,

Zavialov

2023

JMSE

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Characterizing of Azov Sea and Black Sea Water Masses Mixing in the Kerch Strait Using Integrated Remote and Contact Measurements

Rostovtseva

Izhitskiy

Коновалов

2022

JOR

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Based on data of the three-channel hyperspectrometer designed for remote passive optical observations from a moving vessel at a frequency of 1 Hz, a distribution of areas of increased turbidity in the Kerch Strait was obtained. Comparison of these results with the analysis of temperature, salinity, and direction of water flow in depth measured at the stations, as well as with the flow system data made it possible to attribute various areas of the strait to the Azov Sea or the Black Sea water masses. It is shown that the penetration of the Azov Sea waters into the Black Sea at a relatively weak northeast wind proceeds in jets, in some places, the width of the jets themselves and the transition areas between them does not exceed several hundred meters. The different types of waters in the strait differ most strongly in the concentration of suspended matter which might be the result of the anthropogenic influence. Obtaining express information on the composition of waters based on complex measurements during vessel movement and at stations is important if it is necessary to assess the possible spread of polluting factors in the water area of the Kerch Strait and off the Black Sea coast.

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Assessment of Pollution of the Kerch Strait and Adjacent Black Sea Area Based on Field Measurements of 2019–2020

Cited by 2 publications

References 7 publications

Seasonal Variability of Dissolved Methane in the Shallow Coastal Zone: The Case Study of the Golubaya Bay, Northeastern Part of the Black Sea

Seasonal Variability of Dissolved Methane in the Shallow Coastal Zone: The Case Study of the Golubaya Bay, Northeastern Part of the Black Sea

Characterizing of Azov Sea and Black Sea Water Masses Mixing in the Kerch Strait Using Integrated Remote and Contact Measurements

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