Alexander Osadchiev

Alexander Osadchiev
Education:
2009 M.Sc. in Mathematics, Moscow State University, Russia
2014 Ph.D. in Mathematics and Physics, Shirshov Oceanology Institute, Russia
Research interests:
Alexander research is focused on land-ocean interactions with special emphasis on river plumes and associated transport of terrigenous material, nutrients, and pollutants. My principal goal is to improve our understanding of the underlying dynamics of these processes and their influence on coastal ecosystems. My research is based on statistical analysis of in situ and satellite data as well as numerical modeling using Lagrangian and Eulerian ocean models
On June 15, 2021, A.A. Osadchiev for the degree of Doctor of Physical and Mathematical Sciences. The topic of the dissertation is "Structure, dynamics and variability of river plumes". The dissertation is a generalization of many years of research on river plumes carried out by A.A. Osadchiev in various regions of the World Ocean: in the Black Sea, in the seas of the Russian Arctic, in the seas of East Asia. The significance of studies of river plumes carried out by A.A. Osadchiev, is determined by their significant contribution to understanding the interaction of the ocean with land waters, which affects many physical, biological and geochemical processes in the coastal and shelf zones of the sea. River plumes, being a transitional water mass between river runoff and sea waters, provide the transformation and redistribution of global flows of matter between land and the World Ocean. A.A. Osadchiev was the first to create a specialized theory of the formation, propagation and mixing of small river plumes, which account for about 25% of the volume of fresh water and 40% of the volume of terrigenous suspension entering the World Ocean from land. In addition, A.A. Osadchiev carried out comprehensive studies of large-scale transport and transformation of freshwater runoff in the Russian sector of the Arctic, which plays a key role in the variability of the ice cover and regional albedo, which affects climate processes on a global scale.
Based on the materials of the doctoral dissertation of A.A. Osadchiev in December 2021, the Scientific World publishing house published the monograph River Plumes. This monograph became, in fact, the first book in Russian, in which the processes of propagation and transformation of river runoff into the sea and its influence on hydrophysical processes in the coastal and shelf zones are described consistently and in detail.
Science articles
Large chocked lagoon as a barrier for river–sea flux of dissolved pollutants: Case study of the Azov Sea and the Black Sea
Marine Pollution Bulletin, 2023. Roman Sedakov, Alexander Osadchiev, Bernard Barnier, Jean-Marc Molines, Pedro Colombo
pdfStudy of Marine Particles Using Submersible Digital Holographic Camera during the Arctic Expedition
Applied Sciences, 2022. Victor Dyomin, Igor Semiletov, Denis Chernykh, Elena Chertoprud, Alexandra Davydova, Nikolay Kirillov, Olga Konovalova, Alexey Olshukov, Aleksandr Osadchiev and Igor Polovtsev
pdfStructure and Circulation of Atlantic Water Masses in the St. Anna Trough in the Kara Sea
Frontiers in Marine Science, 2022. Alexander Osadchiev, Kirill Viting, Dmitry Frey, Darya Demeshko, Alina Dzhamalova, Alina Nurlibaeva, Alexandra Gordey, Victor Krechik, Eduard Spivak, Igor Semiletov and Natalia Stepanova
pdfProduction of Fluorescent Dissolved Organic Matter by Microalgae Strains from the Ob and Yenisei Gulfs (Siberia)
Plants, 2022. Nikolay V. Lobus, Anton M. Glushchenko, Alexander A. Osadchiev, Yevhen I. Maltsev, Dmitry A. Kapustin, Olga P. Konovalova, Maxim S. Kulikovskiy, Ivan N. Krylov and Anastasia N. Drozdova
pdfSpreading and accumulation of river-borne sediments in the coastal ocean after the environmental disaster at the Doce River in Brazil
Ocean and Coastal Research, 2022. Angelo T. Lemos, Alexander Osadchiev, Piero L. F. Mazzini , Guilherme N. Mill , Sabrina A. R. Fonseca , Renato D. Ghisolfi
pdfMesoscale Eddies in the Black Sea and Their Impact on River Plumes: Numerical Modeling and Satellite Observations
Remote Sensing, 2022. Konstantin Korotenko, Alexander Osadchiev and Vasiliy Melnikov
pdfLateral Border of a Small River Plume: Salinity Structure, Instabilities and Mass Transport
Remote Sensing, 2022. Alexander Osadchiev, Alexandra Gordey, Alexandra Barymova, Roman Sedakov, Vladimir Rogozhin, Roman Zhiba and Roman Dbar
pdfEditorial. River plumes and estuaries
Frontiers in Marine Science, 2022. Alexander Osadchiev and Alexander Yankovsky
pdfDecomposition of Estuarine Circulation and Residual Stratification under Landfast Sea Ice
Journal of Physical Oceanography, 2022. Hans Burchard, Karsten Bolding, Xaver Lange, and Alexander Osadchiev
pdfStructure of the freshened surface layer in the Laptev and East-Siberian seas during ice-free periods
Frontiers in Marine Science, 2021. Alexander Osadchiev, Dmitry Frey, Eduard Spivak, Sergey Shchuka,Natalia Tilinina1 and Igor Semiletov
pdfStructure of the freshened surface layer in the Kara Sea during ice-free periods
Journal of Geophysical Research: Oceans, 2021. A. A. Osadchiev, D. I. Frey, S. A. Shchuka, N. D. Tilinina, E. G. Morozov, and P. O. Zavialov
pdfInternal waves as a source of concentric rings within small river plumes
Remote Sensing, 2021. Alexander Osadchiev , Roman Sedakov, Alexandra Gordey and Alexandra Barymova
pdfLarge River Plumes Detection by Satellite Altimetry Case Study of the Ob–Yenisei Plume
Remote Sensing, 2021. Dmitry Frey, and Alexander Osadchiev
pdfWater Exchange Between the Gulf of Ob and the Kara Sea During Ice-Free Seasons The Roles of River Discharge and Wind Forcing.pdf
Frontiers in Marine Science, 2021. Alexander Osadchiev, Olga Konovalova and Alexandra Gordey
pdfMicroplastics distribution in the Eurasian Arctic is affected by Atlantic waters and Siberian rivers
Communications Earth & Environment, 2021. Evgeniy Yakushev, Anna Gebruk, Alexander Osadchiev, Svetlana Pakhomova, Amy Lusher , Anfisa Berezina, Bert van Bavel, Elena Vorozheikina, Denis Chernykh, Glafira Kolbasova, Ilia Razgon & Igor Semiletov
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