Investigation of the field of colored dissolved organic matter concentration and its relationship to the salinity field in Dnieper-Bug estuary

P.D. Lomakin1,2

1Marine Hydrophysical Institute of RAS, Russian Federation, Sevastopol, Kapitanskaya St., 2

2Institute of Natural and Technical Systems, RF, Sevastopol, Lenin St., 28

Email: p_lomakin@mail.ru

DOI: 10.33075/2220-5861-2021-2-72-80

UDC 504+551 465

Abstract:

   Based on the data of the expedition carried out in August 2012, the features of the structure of the salinity and fDOM concentration fields, as well as the correlation between these values ​​in the Dnieper-Bug estuary, are analyzed. It is shown that the salinity field in the Dnieper-Bug estuary is characterized by all structural features typical of coastal sea areas freshened by river runoff, while the fDOM concentration field has anomalous properties due to the presence of an anthropogenic component of this value. The presence of fDOM of anthropogenic origin is most significant in the western part of the Dnieper estuary and is related to the influence of the city and port of Ochakov. The maximum content of fDOM was recorded here, which caused an anomalous horizontal distribution of this substance concentration, increasing from the mouth of the Dnieper to the open Black Sea waters. The contaminated areas of the studied water areas, which are adjacent to settlements and occupy the predominant part of the water surface of the Dnieper-Bug estuary, are characterized by an increased fDOM content and intrusive feature of the vertical structure of this substance concentration field of. It is revealed that in the Dnieper-Bug estuary there is no inverse correlation between the salinity fields and fDOM concentration, which is typical for unpolluted coastal waters, freshened by river runoff. A similar anomaly is an indicator of the pollution of coastal waters with organic matter.

Keywords: salinity, colored dissolved organic matter, pollution, Dnieper-Bug estuary.

To quote: Lomakin, P.D. “Investigation of the Field of Colored Dissolved Organic Matter Concentration and Its Relationship to the Salinity Field in Dnieper-Bug Estuary.” Monitoring Systems of Environment no. 2 (June 24, 2021): 72–80. doi:10.33075/2220-5861-2021-2-72-80.

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REFERENCES

  1. Aleksandrova N.G., Stepkova V.V. Ocenka zakonomernostej raspredelenija organicheskogo veshhestva v Dneprovsko-Bugskom limane s ispol’zovaniem korreljacionnogo analiza, Naukovij vіsnik Hersons’koї derzhavnoї mors’koї akademії, 2012. No 1 (6). pp. 158–185.
  2. URL: http://rybalka-info.in/index.php?option=com_content&view=article&id=869 (February 26, 2021).
  3. URL: http://ecodevice.com.ru/ecodevice-catalogue/multiturbidimeter-kondor (February 26, 2021).
  4. Saraceno J.F., Pellerin B.A., Downing B.D., Boss E., Bachand P.A.M., Bergamaschi B.A. High-frequency in situ optical measurements during a storm event: Assessing relationships between dissolved organic matter, sediment concentrations, and hydrologic processes, Journal of geophysical research, 2009. Vol. 114, G00F09. doi:10.1029/2009JG000989.
  5. Lomakin P.D., Chepyzhenko A.I., Chepyzhenko A.A. Field of the Colored Dissolved Organic Matter Concentration in the Sea of Azov and the Kerch Strait Waters Based on Optical Observations, Physical oceanography, 2016, No 5. pp. 71–83. DOI: 10.22449/1573-160X-2016-5-71-83.
  6. Merkouriadi I., Walve J., Kratzer S. Development of under-ice stratification in Himmerfjärden bay, North-Western Baltic proper, and their effect on the phytoplankton spring bloom, Journal of marine Systems, 2018, No 186, pp. 85–95.URL:https://www.researchgate.net/publication/325901747_Development_of_ (February 26, 2021).
  7. Pugach S.P., Pipko I.I. Dinamika rastvorennogo okrashennogo organicheskogo veshhestva na shel’fe Vostochnosibirskogo morja, Doklady akademii nauk, 2012, Vol. 447, No 6, pp. 671–674.
  8. Sasaki H., Gomi Y., Asai T. et al. Remote sensing of salinity from satellite-derived CDOM in the Changjiang River dominated East China Sea, Journal of the Japan Society for Marine Surveys and Technology, 2013, Vol. 25, Issue 2, pp. 213–218. doi:10.11306/jsmst.25.2_13.
  9. https://ru.wikipedia.org/wiki/Днепро-Бугский лиман (February 26, 2021).
  10. O.M. Gorshkova, S.V. Pacaeva, E.V. Fedoseeva [i dr.], Fluorescencija rastvorennogo organicheskogo veshhestva prirodnoj vody, Voda: himija i jekologija, 2009, No 11, pp. 31–37.
  11. Hajlov K.M. Jekologicheskij metabolizm v more, Kiev, Naukova Dumka, 1971, 250 p.
  12. Lomakin P.D., Chepyzhenko A.I., Chepyzhenko A.A. Ocenka koncentracii polej summarnoj vzvesi i rastvorennogo organicheskogo veshhestva v buhtah krymskogo poberezh’ja na osnove dannyh opticheskih izmerenij, Jekologicheskaja bezopasnost’ pribrezhnoj i shel’fovoj zon i kompleksnye issledovanija resursov shel’fa, sbornik nauchnyh trudov, 2007, Vyp. 15. pp. 168–176.
  13. Ducrotoy Jean-Paul (2020): Coastal pollution and impacts. Available from http://www.coastalwiki.org/wiki/Coastal_pollution_and_impacts.