Cyanobacteria Bloom in the Sea of Azov According to Landsat Data

The paper explores the spatio-temporal features of cyanobacterial blooms in the Sea of Azov based on Landsat satellite data from 1999 to 2016. The strongest blooms were observed in 1999, 2006–2009, when cyanobacteria occupied the entire central part of the Sea of Azov. In these years peak blooms occurred in August-September. In 2006, the penetration of cyanobacteria from the Sea of Azov to the Black Sea through the Kerch Strait was observed. The longest and most extensive blooms of cyanobacteria are noted in Taganrog Bay, which is associated with its shallow water and the entry of nutrients with the Don River fl ow. Here, bloom takes place from February to November. Local accumulations of cyanobacteria are observed along the eastern shore of the Azov Sea, in the runoff of the Kuban and Protoka rivers, in the Akhtarskiy estuary and in the Temryuk Bay. Cyanobacterial blooms are least common near the north-west coast. Landsat data show that in the summer, cyanobacteria spread from the Taganrog Gulf to the south or west. From the mouth of the Kuban River, cyanobacteria move north. Analysis of numerical calculations using the Nemo model has shown that such distribution is associated with the northern currents that occur in the southern part of the sea in the summer, which may be due to the infl uence of the river fl ow. Maps of probability distribution of cyanobacterial observation were obtained and estimates of the seasonal variability of the area covered by blooming cyanobacteria according to Landsat data are given. In the Azov Sea, blooming peaks in July-August, while reaching its minimum in winter from November to February.

Keywords

Landsat, Sea of Azov, cyanobacteria

Acknowledgment

The work on numerical modeling of currents in the Azov Sea basin was supported by the program of the Presidium of the Russian Academy of Sciences No. 1.2.50 “Development of methods and means of operational oceanology for studying the variability of the fields of the Black Sea”.

Received

27.12.2018

Publication date

27.12.2018

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GOST	Aleskerova A., Kubryakov A., Stanichny S., Lishaev P., Mizyuk A. Cyanobacteria Bloom in the Sea of Azov According to Landsat Data // Issledovanie Zemli iz kosmosa – 2018. – Issue 6 C. 52-64 [Electronic resource]. URL: http://ras.jes.su/izk/s020596140003368-5-1-en (circulation date: 29.04.2024). DOI: 10.31857/S020596140003368-5
MLA	Aleskerova, A., Kubryakov, A., Stanichny, S., Lishaev, P., Mizyuk, A. "Cyanobacteria Bloom in the Sea of Azov According to Landsat Data." Issledovanie Zemli iz kosmosa 6 (2018):52-64. DOI: 10.31857/S020596140003368-5
APA	Aleskerova A., Kubryakov A., Stanichny S., Lishaev P., Mizyuk A. (2018). Cyanobacteria Bloom in the Sea of Azov According to Landsat Data. Issledovanie Zemli iz kosmosa (6), pp.52-64 DOI: 10.31857/S020596140003368-5

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