Alexander Osadchiev

45ff2190802f9793d44160c4e551925c XS

Leading Researcher
PhD (Physical Oceanology, 2013)
Habilitation (Physical Oceanology, 2021)

Laboratory of Land-Ocean Interactions and the Anthropogenic Impact
Ocean Physics

36, Nakhimovskiy prospect, Moscow, 117997, Russia
+7(499)124-85-28, internal phone 0456

 

Web of Science ResearcherID: E-6815-2014
Scopus AuthorID: 53985012400
ORCID: 0000-0002-6659-0934
RSCI AuthorID: 745844

Alexander Osadchiev graduated from the Lomonosov Moscow State University (Department of Mechanics and Mathematics) in 2009. Thesis was defended at the Laboratory of Number Theory under the supervision of Prof. Dr. Yuri Nesterenko. Thesis topic: "On the search for elliptic curves with a rational group of large rank."

In 2009 Alexander Osadchiev started working at the Shirshov Institute of Oceanology, since 2021 he is a leading researcher. In 2013 Alexander Osadchiev defended PhD dissertation under supervision of Prof. Dr. Peter Zavialov. Dissertation topic: "Dynamics of spreading and variability of river plumes in coastal sea". In 2021 Alexander Osadchiev defended Habilitation dissertation. Dissertation topic: "Structure, variability, and dynamics of river plumes".

Scientific interests:

  • coastal and shelf processes
  • land-ocean interactions
  • large-scale circulation in the Arctic

The research of Alexander Osadchiev is focused on estuarine processes that determine formation of river plumes, and the subsequent spreading and mixing of river plumes in coastal and shelf areas. Also, Alexander Osadchiev studies the influence of continental runoff on hydrological structure and dynamical processes in coastal and shelf areas. Also, Alexander Osadchiev studies large-scale circulation of water masses at the shelf and continental slope of the Russian Arctic seas.

Alexander Osadchiev created a specialized theory of the formation, spreading and mixing of small river plumes, which account for about 25% of the freshwater and 40% of terrigenous sediments coming from land to the World Ocean. In addition, he performed comprehensive studies of large-scale transport and transformation of freshwater runoff in the Russian Arctic seas, which plays a key role in variability of the ice cover and regional albedo, which affects global climatic processes.

Main results:

  1. A new concept was created for studying river plumes (freshened water masses formed as a result of mixing of river runoff and saline sea waters), based on the assessment of spreading and transformation of freshwater runoff in coastal sea at different spatial and temporal scales. Physical hydrodynamic differences between spreading and transformation of mall and large river plumes was established, that results in principal differences in structure, dynamics and variability of small and large river plumes.
  2. Fundamental results of the spreading and mixing of freshwater runoff, river-borne suspended and dissolved matter was established. Based on these results, the influence of runoff of numerous small rivers on the structure, dynamical processes and pollution distribution along the Russian Black Sea coast was studied.
  3. The large-scale transport and transformation of freshwater runoff in the Russian Arctic seas was been studied. It was shown that several regional processes in estuaries and near deltas of large rivers of the Russian Arctic (Ob, Yenisei, Khatanga, Lena, Indigirka, and Kolyma) play an important role in formation of hydrological structure of sea surface layer at the entire Eastern Arctic shelf. Principally new understanding of seasonal and inter-annual variability of the large-scale freshened surface layer at the Russian Arctic shelf was obtained.

Professional activity:

  • Since 2009, Alexander Osadchiev participated in the organization and leading of more than 30 sea and coastal expeditions in the Black, White, Kara, Laptev, East-Siberian, Baltic, Caspian, South China, East China, Philippine and other seas.
  • Since 2019, Alexander Osadchiev has been organizing and scientific leading of the "SIO Floating University".
  • Since 2018, Alexander Osadchiev has been working part-time at the Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry (IGEM RAS) as a senior researcher.
  • Since 2020, Alexander Osadchiev has been working part-time at the Moscow Institute of Physics and Technology (MIPT), supervising the bachelors and masters theses of students.
  • Since 2017, Alexander Osadchiev is the main convener of OS2.1: Open session on coastal and shelf seas at the EGU General Assemblies.
  • Alexander Osadchiev is a guest member of the editorial boards of Remote Sensing (impact factor 4.848) and Frontiers in Marine Science (impact factor 4.435). Reviewer in scientific journals Frontiers Studies in Marine Science; Remote Sensing; Journal of Geophysical Research: Oceans; Geophysical Research Letters; Ocean Science; Estuarine, Coastal, and Shelf Science; Continental Shelf Research; Regional Studies in Marine Science; Oceanology; Water Resources; Meteorology and Hydrology; Arctic and Antarctic problems.
  • Expert of the Russian Scientific Foundation since 2018, member of the Federal List of Scientific Experts of the Russian Federation since 2021.

Awards:

  1. Award of Moscow Government for young scientists in 2020.
  2. Award of the Russian Academy of Sciences for young scientists in 2018.
  3. EGU Outstanding Student Poster Award at the 2012 European Geoscience Union General Assembly.

 

 

Top

 

TPL_A4JOOMLA-WINTERLAKE-FREE_FOOTER_LINK_TEXT
loading